From: Spencer Oliver Date: Thu, 28 Jul 2011 10:42:27 +0000 (+0100) Subject: flash: update stm32 driver names X-Git-Tag: v0.5.0~10 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=b066a7db2498eadcdeb55ea763d805c75fbbd00b;p=openocd flash: update stm32 driver names Use consistent names for the stm32 family flash drivers, eg. stm32x -> stm32f1x stm32f2xxx -> stm32f2x this makes it easier to add support for newer stm32 families. Signed-off-by: Spencer Oliver --- diff --git a/src/flash/nor/Makefile.am b/src/flash/nor/Makefile.am index c897851c..6dd95fe4 100644 --- a/src/flash/nor/Makefile.am +++ b/src/flash/nor/Makefile.am @@ -24,8 +24,8 @@ NOR_DRIVERS = \ pic32mx.c \ stmsmi.c \ stellaris.c \ - stm32x.c \ - stm32f2xxx.c \ + stm32f1x.c \ + stm32f2x.c \ str7x.c \ str9x.c \ str9xpec.c \ diff --git a/src/flash/nor/drivers.c b/src/flash/nor/drivers.c index dc927b30..669b0b9f 100644 --- a/src/flash/nor/drivers.c +++ b/src/flash/nor/drivers.c @@ -32,8 +32,8 @@ extern struct flash_driver str9x_flash; extern struct flash_driver aduc702x_flash; extern struct flash_driver stellaris_flash; extern struct flash_driver str9xpec_flash; -extern struct flash_driver stm32x_flash; -extern struct flash_driver stm32xf2xxx_flash; +extern struct flash_driver stm32f1x_flash; +extern struct flash_driver stm32f2x_flash; extern struct flash_driver tms470_flash; extern struct flash_driver ecosflash_flash; extern struct flash_driver ocl_flash; @@ -62,8 +62,8 @@ static struct flash_driver *flash_drivers[] = { &aduc702x_flash, &stellaris_flash, &str9xpec_flash, - &stm32x_flash, - &stm32xf2xxx_flash, + &stm32f1x_flash, + &stm32f2x_flash, &tms470_flash, &ecosflash_flash, &ocl_flash, diff --git a/src/flash/nor/stm32f1x.c b/src/flash/nor/stm32f1x.c new file mode 100644 index 00000000..6bc43001 --- /dev/null +++ b/src/flash/nor/stm32f1x.c @@ -0,0 +1,1568 @@ +/*************************************************************************** + * Copyright (C) 2005 by Dominic Rath * + * Dominic.Rath@gmx.de * + * * + * Copyright (C) 2008 by Spencer Oliver * + * spen@spen-soft.co.uk * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "imp.h" +#include +#include +#include + +/* stm32x register locations */ + +#define STM32_FLASH_ACR 0x40022000 +#define STM32_FLASH_KEYR 0x40022004 +#define STM32_FLASH_OPTKEYR 0x40022008 +#define STM32_FLASH_SR 0x4002200C +#define STM32_FLASH_CR 0x40022010 +#define STM32_FLASH_AR 0x40022014 +#define STM32_FLASH_OBR 0x4002201C +#define STM32_FLASH_WRPR 0x40022020 + +/* option byte location */ + +#define STM32_OB_RDP 0x1FFFF800 +#define STM32_OB_USER 0x1FFFF802 +#define STM32_OB_DATA0 0x1FFFF804 +#define STM32_OB_DATA1 0x1FFFF806 +#define STM32_OB_WRP0 0x1FFFF808 +#define STM32_OB_WRP1 0x1FFFF80A +#define STM32_OB_WRP2 0x1FFFF80C +#define STM32_OB_WRP3 0x1FFFF80E + +/* FLASH_CR register bits */ + +#define FLASH_PG (1 << 0) +#define FLASH_PER (1 << 1) +#define FLASH_MER (1 << 2) +#define FLASH_OPTPG (1 << 4) +#define FLASH_OPTER (1 << 5) +#define FLASH_STRT (1 << 6) +#define FLASH_LOCK (1 << 7) +#define FLASH_OPTWRE (1 << 9) + +/* FLASH_SR register bits */ + +#define FLASH_BSY (1 << 0) +#define FLASH_PGERR (1 << 2) +#define FLASH_WRPRTERR (1 << 4) +#define FLASH_EOP (1 << 5) + +/* STM32_FLASH_OBR bit definitions (reading) */ + +#define OPT_ERROR 0 +#define OPT_READOUT 1 +#define OPT_RDWDGSW 2 +#define OPT_RDRSTSTOP 3 +#define OPT_RDRSTSTDBY 4 +#define OPT_BFB2 5 /* dual flash bank only */ + +/* register unlock keys */ + +#define KEY1 0x45670123 +#define KEY2 0xCDEF89AB + +/* we use an offset to access the second bank on dual flash devices + * strangely the protection of the second bank is done on the bank0 reg's */ + +#define FLASH_OFFSET_B0 0x00 +#define FLASH_OFFSET_B1 0x40 + +struct stm32x_options +{ + uint16_t RDP; + uint16_t user_options; + uint16_t protection[4]; +}; + +struct stm32x_flash_bank +{ + struct stm32x_options option_bytes; + struct working_area *write_algorithm; + int ppage_size; + int probed; + + bool has_dual_banks; + /* used to access dual flash bank stm32xl + * 0x00 will address bank 0 flash + * 0x40 will address bank 1 flash */ + int register_offset; +}; + +static int stm32x_mass_erase(struct flash_bank *bank); + +/* flash bank stm32x 0 0 + */ +FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command) +{ + struct stm32x_flash_bank *stm32x_info; + + if (CMD_ARGC < 6) + { + LOG_WARNING("incomplete flash_bank stm32x configuration"); + return ERROR_FLASH_BANK_INVALID; + } + + stm32x_info = malloc(sizeof(struct stm32x_flash_bank)); + bank->driver_priv = stm32x_info; + + stm32x_info->write_algorithm = NULL; + stm32x_info->probed = 0; + stm32x_info->has_dual_banks = false; + stm32x_info->register_offset = FLASH_OFFSET_B0; + + return ERROR_OK; +} + +static inline int stm32x_get_flash_reg(struct flash_bank *bank, uint32_t reg) +{ + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + return reg + stm32x_info->register_offset; +} + +static inline int stm32x_get_flash_status(struct flash_bank *bank, uint32_t *status) +{ + struct target *target = bank->target; + return target_read_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), status); +} + +static int stm32x_wait_status_busy(struct flash_bank *bank, int timeout) +{ + struct target *target = bank->target; + uint32_t status; + int retval = ERROR_OK; + + /* wait for busy to clear */ + for (;;) + { + retval = stm32x_get_flash_status(bank, &status); + if (retval != ERROR_OK) + return retval; + LOG_DEBUG("status: 0x%" PRIx32 "", status); + if ((status & FLASH_BSY) == 0) + break; + if (timeout-- <= 0) + { + LOG_ERROR("timed out waiting for flash"); + return ERROR_FAIL; + } + alive_sleep(1); + } + + if (status & FLASH_WRPRTERR) + { + LOG_ERROR("stm32x device protected"); + retval = ERROR_FAIL; + } + + if (status & FLASH_PGERR) + { + LOG_ERROR("stm32x device programming failed"); + retval = ERROR_FAIL; + } + + /* Clear but report errors */ + if (status & (FLASH_WRPRTERR | FLASH_PGERR)) + { + /* If this operation fails, we ignore it and report the original + * retval + */ + target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), + FLASH_WRPRTERR | FLASH_PGERR); + } + return retval; +} + +int stm32x_check_operation_supported(struct flash_bank *bank) +{ + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + + /* if we have a dual flash bank device then + * we need to perform option byte stuff on bank0 only */ + if (stm32x_info->register_offset != FLASH_OFFSET_B0) + { + LOG_ERROR("Option Byte Operation's must use bank0"); + return ERROR_FLASH_OPERATION_FAILED; + } + + return ERROR_OK; +} + +static int stm32x_read_options(struct flash_bank *bank) +{ + uint32_t optiondata; + struct stm32x_flash_bank *stm32x_info = NULL; + struct target *target = bank->target; + + stm32x_info = bank->driver_priv; + + /* read current option bytes */ + int retval = target_read_u32(target, STM32_FLASH_OBR, &optiondata); + if (retval != ERROR_OK) + return retval; + + stm32x_info->option_bytes.user_options = (uint16_t)0xFFF8 | ((optiondata >> 2) & 0x07); + stm32x_info->option_bytes.RDP = (optiondata & (1 << OPT_READOUT)) ? 0xFFFF : 0x5AA5; + + if (optiondata & (1 << OPT_READOUT)) + LOG_INFO("Device Security Bit Set"); + + /* each bit refers to a 4bank protection */ + retval = target_read_u32(target, STM32_FLASH_WRPR, &optiondata); + if (retval != ERROR_OK) + return retval; + + stm32x_info->option_bytes.protection[0] = (uint16_t)optiondata; + stm32x_info->option_bytes.protection[1] = (uint16_t)(optiondata >> 8); + stm32x_info->option_bytes.protection[2] = (uint16_t)(optiondata >> 16); + stm32x_info->option_bytes.protection[3] = (uint16_t)(optiondata >> 24); + + return ERROR_OK; +} + +static int stm32x_erase_options(struct flash_bank *bank) +{ + struct stm32x_flash_bank *stm32x_info = NULL; + struct target *target = bank->target; + + stm32x_info = bank->driver_priv; + + /* read current options */ + stm32x_read_options(bank); + + /* unlock flash registers */ + int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1); + if (retval != ERROR_OK) + return retval; + + retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2); + if (retval != ERROR_OK) + return retval; + + /* unlock option flash registers */ + retval = target_write_u32(target, STM32_FLASH_OPTKEYR, KEY1); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, STM32_FLASH_OPTKEYR, KEY2); + if (retval != ERROR_OK) + return retval; + + /* erase option bytes */ + retval = target_write_u32(target, STM32_FLASH_CR, FLASH_OPTER | FLASH_OPTWRE); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, STM32_FLASH_CR, FLASH_OPTER | FLASH_STRT | FLASH_OPTWRE); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 10); + if (retval != ERROR_OK) + return retval; + + /* clear readout protection and complementary option bytes + * this will also force a device unlock if set */ + stm32x_info->option_bytes.RDP = 0x5AA5; + + return ERROR_OK; +} + +static int stm32x_write_options(struct flash_bank *bank) +{ + struct stm32x_flash_bank *stm32x_info = NULL; + struct target *target = bank->target; + + stm32x_info = bank->driver_priv; + + /* unlock flash registers */ + int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2); + if (retval != ERROR_OK) + return retval; + + /* unlock option flash registers */ + retval = target_write_u32(target, STM32_FLASH_OPTKEYR, KEY1); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, STM32_FLASH_OPTKEYR, KEY2); + if (retval != ERROR_OK) + return retval; + + /* program option bytes */ + retval = target_write_u32(target, STM32_FLASH_CR, FLASH_OPTPG | FLASH_OPTWRE); + if (retval != ERROR_OK) + return retval; + + /* write user option byte */ + retval = target_write_u16(target, STM32_OB_USER, stm32x_info->option_bytes.user_options); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 10); + if (retval != ERROR_OK) + return retval; + + /* write protection byte 1 */ + retval = target_write_u16(target, STM32_OB_WRP0, stm32x_info->option_bytes.protection[0]); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 10); + if (retval != ERROR_OK) + return retval; + + /* write protection byte 2 */ + retval = target_write_u16(target, STM32_OB_WRP1, stm32x_info->option_bytes.protection[1]); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 10); + if (retval != ERROR_OK) + return retval; + + /* write protection byte 3 */ + retval = target_write_u16(target, STM32_OB_WRP2, stm32x_info->option_bytes.protection[2]); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 10); + if (retval != ERROR_OK) + return retval; + + /* write protection byte 4 */ + retval = target_write_u16(target, STM32_OB_WRP3, stm32x_info->option_bytes.protection[3]); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 10); + if (retval != ERROR_OK) + return retval; + + /* write readout protection bit */ + retval = target_write_u16(target, STM32_OB_RDP, stm32x_info->option_bytes.RDP); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 10); + if (retval != ERROR_OK) + return retval; + + retval = target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); + if (retval != ERROR_OK) + return retval; + + return ERROR_OK; +} + +static int stm32x_protect_check(struct flash_bank *bank) +{ + struct target *target = bank->target; + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + + uint32_t protection; + int i, s; + int num_bits; + int set; + + if (target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + int retval = stm32x_check_operation_supported(bank); + if (ERROR_OK != retval) + return retval; + + /* medium density - each bit refers to a 4bank protection + * high density - each bit refers to a 2bank protection */ + retval = target_read_u32(target, STM32_FLASH_WRPR, &protection); + if (retval != ERROR_OK) + return retval; + + /* medium density - each protection bit is for 4 * 1K pages + * high density - each protection bit is for 2 * 2K pages */ + num_bits = (bank->num_sectors / stm32x_info->ppage_size); + + if (stm32x_info->ppage_size == 2) + { + /* high density flash/connectivity line protection */ + + set = 1; + + if (protection & (1 << 31)) + set = 0; + + /* bit 31 controls sector 62 - 255 protection for high density + * bit 31 controls sector 62 - 127 protection for connectivity line */ + for (s = 62; s < bank->num_sectors; s++) + { + bank->sectors[s].is_protected = set; + } + + if (bank->num_sectors > 61) + num_bits = 31; + + for (i = 0; i < num_bits; i++) + { + set = 1; + + if (protection & (1 << i)) + set = 0; + + for (s = 0; s < stm32x_info->ppage_size; s++) + bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set; + } + } + else + { + /* low/medium density flash protection */ + for (i = 0; i < num_bits; i++) + { + set = 1; + + if (protection & (1 << i)) + set = 0; + + for (s = 0; s < stm32x_info->ppage_size; s++) + bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set; + } + } + + return ERROR_OK; +} + +static int stm32x_erase(struct flash_bank *bank, int first, int last) +{ + struct target *target = bank->target; + int i; + + if (bank->target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + if ((first == 0) && (last == (bank->num_sectors - 1))) + { + return stm32x_mass_erase(bank); + } + + /* unlock flash registers */ + int retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2); + if (retval != ERROR_OK) + return retval; + + for (i = first; i <= last; i++) + { + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PER); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_AR), + bank->base + bank->sectors[i].offset); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, + stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PER | FLASH_STRT); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 100); + if (retval != ERROR_OK) + return retval; + + bank->sectors[i].is_erased = 1; + } + + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK); + if (retval != ERROR_OK) + return retval; + + return ERROR_OK; +} + +static int stm32x_protect(struct flash_bank *bank, int set, int first, int last) +{ + struct stm32x_flash_bank *stm32x_info = NULL; + struct target *target = bank->target; + uint16_t prot_reg[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF}; + int i, reg, bit; + int status; + uint32_t protection; + + stm32x_info = bank->driver_priv; + + if (target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + int retval = stm32x_check_operation_supported(bank); + if (ERROR_OK != retval) + return retval; + + if ((first % stm32x_info->ppage_size) != 0) + { + LOG_WARNING("aligned start protect sector to a %d sector boundary", + stm32x_info->ppage_size); + first = first - (first % stm32x_info->ppage_size); + } + if (((last + 1) % stm32x_info->ppage_size) != 0) + { + LOG_WARNING("aligned end protect sector to a %d sector boundary", + stm32x_info->ppage_size); + last++; + last = last - (last % stm32x_info->ppage_size); + last--; + } + + /* medium density - each bit refers to a 4bank protection + * high density - each bit refers to a 2bank protection */ + retval = target_read_u32(target, STM32_FLASH_WRPR, &protection); + if (retval != ERROR_OK) + return retval; + + prot_reg[0] = (uint16_t)protection; + prot_reg[1] = (uint16_t)(protection >> 8); + prot_reg[2] = (uint16_t)(protection >> 16); + prot_reg[3] = (uint16_t)(protection >> 24); + + if (stm32x_info->ppage_size == 2) + { + /* high density flash */ + + /* bit 7 controls sector 62 - 255 protection */ + if (last > 61) + { + if (set) + prot_reg[3] &= ~(1 << 7); + else + prot_reg[3] |= (1 << 7); + } + + if (first > 61) + first = 62; + if (last > 61) + last = 61; + + for (i = first; i <= last; i++) + { + reg = (i / stm32x_info->ppage_size) / 8; + bit = (i / stm32x_info->ppage_size) - (reg * 8); + + if (set) + prot_reg[reg] &= ~(1 << bit); + else + prot_reg[reg] |= (1 << bit); + } + } + else + { + /* medium density flash */ + for (i = first; i <= last; i++) + { + reg = (i / stm32x_info->ppage_size) / 8; + bit = (i / stm32x_info->ppage_size) - (reg * 8); + + if (set) + prot_reg[reg] &= ~(1 << bit); + else + prot_reg[reg] |= (1 << bit); + } + } + + if ((status = stm32x_erase_options(bank)) != ERROR_OK) + return status; + + stm32x_info->option_bytes.protection[0] = prot_reg[0]; + stm32x_info->option_bytes.protection[1] = prot_reg[1]; + stm32x_info->option_bytes.protection[2] = prot_reg[2]; + stm32x_info->option_bytes.protection[3] = prot_reg[3]; + + return stm32x_write_options(bank); +} + +static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer, + uint32_t offset, uint32_t count) +{ + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + struct target *target = bank->target; + uint32_t buffer_size = 16384; + struct working_area *source; + uint32_t address = bank->base + offset; + struct reg_param reg_params[4]; + struct armv7m_algorithm armv7m_info; + int retval = ERROR_OK; + + /* see contib/loaders/flash/stm32x.s for src */ + + static const uint8_t stm32x_flash_write_code[] = { + /* #define STM32_FLASH_CR_OFFSET 0x10 */ + /* #define STM32_FLASH_SR_OFFSET 0x0C */ + /* write: */ + 0x08, 0x4c, /* ldr r4, STM32_FLASH_BASE */ + 0x1c, 0x44, /* add r4, r3 */ + /* write_half_word: */ + 0x01, 0x23, /* movs r3, #0x01 */ + 0x23, 0x61, /* str r3, [r4, #STM32_FLASH_CR_OFFSET] */ + 0x30, 0xf8, 0x02, 0x3b, /* ldrh r3, [r0], #0x02 */ + 0x21, 0xf8, 0x02, 0x3b, /* strh r3, [r1], #0x02 */ + /* busy: */ + 0xe3, 0x68, /* ldr r3, [r4, #STM32_FLASH_SR_OFFSET] */ + 0x13, 0xf0, 0x01, 0x0f, /* tst r3, #0x01 */ + 0xfb, 0xd0, /* beq busy */ + 0x13, 0xf0, 0x14, 0x0f, /* tst r3, #0x14 */ + 0x01, 0xd1, /* bne exit */ + 0x01, 0x3a, /* subs r2, r2, #0x01 */ + 0xf0, 0xd1, /* bne write_half_word */ + /* exit: */ + 0x00, 0xbe, /* bkpt #0x00 */ + 0x00, 0x20, 0x02, 0x40, /* STM32_FLASH_BASE: .word 0x40022000 */ + }; + + /* flash write code */ + if (target_alloc_working_area(target, sizeof(stm32x_flash_write_code), + &stm32x_info->write_algorithm) != ERROR_OK) + { + LOG_WARNING("no working area available, can't do block memory writes"); + return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; + }; + + if ((retval = target_write_buffer(target, stm32x_info->write_algorithm->address, + sizeof(stm32x_flash_write_code), + (uint8_t*)stm32x_flash_write_code)) != ERROR_OK) + return retval; + + /* memory buffer */ + while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) + { + buffer_size /= 2; + if (buffer_size <= 256) + { + /* if we already allocated the writing code, but failed to get a + * buffer, free the algorithm */ + if (stm32x_info->write_algorithm) + target_free_working_area(target, stm32x_info->write_algorithm); + + LOG_WARNING("no large enough working area available, can't do block memory writes"); + return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; + } + }; + + armv7m_info.common_magic = ARMV7M_COMMON_MAGIC; + armv7m_info.core_mode = ARMV7M_MODE_ANY; + + init_reg_param(®_params[0], "r0", 32, PARAM_OUT); + init_reg_param(®_params[1], "r1", 32, PARAM_OUT); + init_reg_param(®_params[2], "r2", 32, PARAM_OUT); + init_reg_param(®_params[3], "r3", 32, PARAM_IN_OUT); + + while (count > 0) + { + uint32_t thisrun_count = (count > (buffer_size / 2)) ? + (buffer_size / 2) : count; + + if ((retval = target_write_buffer(target, source->address, + thisrun_count * 2, buffer)) != ERROR_OK) + break; + + buf_set_u32(reg_params[0].value, 0, 32, source->address); + buf_set_u32(reg_params[1].value, 0, 32, address); + buf_set_u32(reg_params[2].value, 0, 32, thisrun_count); + buf_set_u32(reg_params[3].value, 0, 32, stm32x_info->register_offset); + + if ((retval = target_run_algorithm(target, 0, NULL, 4, reg_params, + stm32x_info->write_algorithm->address, + 0, + 10000, &armv7m_info)) != ERROR_OK) + { + LOG_ERROR("error executing stm32x flash write algorithm"); + break; + } + + if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_PGERR) + { + LOG_ERROR("flash memory not erased before writing"); + /* Clear but report errors */ + target_write_u32(target, STM32_FLASH_SR, FLASH_PGERR); + retval = ERROR_FAIL; + break; + } + + if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_WRPRTERR) + { + LOG_ERROR("flash memory write protected"); + /* Clear but report errors */ + target_write_u32(target, STM32_FLASH_SR, FLASH_WRPRTERR); + retval = ERROR_FAIL; + break; + } + + buffer += thisrun_count * 2; + address += thisrun_count * 2; + count -= thisrun_count; + } + + target_free_working_area(target, source); + target_free_working_area(target, stm32x_info->write_algorithm); + + destroy_reg_param(®_params[0]); + destroy_reg_param(®_params[1]); + destroy_reg_param(®_params[2]); + destroy_reg_param(®_params[3]); + + return retval; +} + +static int stm32x_write(struct flash_bank *bank, uint8_t *buffer, + uint32_t offset, uint32_t count) +{ + struct target *target = bank->target; + uint32_t words_remaining = (count / 2); + uint32_t bytes_remaining = (count & 0x00000001); + uint32_t address = bank->base + offset; + uint32_t bytes_written = 0; + int retval; + + if (bank->target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + if (offset & 0x1) + { + LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset); + return ERROR_FLASH_DST_BREAKS_ALIGNMENT; + } + + /* unlock flash registers */ + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2); + if (retval != ERROR_OK) + return retval; + + /* multiple half words (2-byte) to be programmed? */ + if (words_remaining > 0) + { + /* try using a block write */ + if ((retval = stm32x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK) + { + if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) + { + /* if block write failed (no sufficient working area), + * we use normal (slow) single dword accesses */ + LOG_WARNING("couldn't use block writes, falling back to single memory accesses"); + } + } + else + { + buffer += words_remaining * 2; + address += words_remaining * 2; + words_remaining = 0; + } + } + + if ((retval != ERROR_OK) && (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE)) + return retval; + + while (words_remaining > 0) + { + uint16_t value; + memcpy(&value, buffer + bytes_written, sizeof(uint16_t)); + + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG); + if (retval != ERROR_OK) + return retval; + retval = target_write_u16(target, address, value); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 5); + if (retval != ERROR_OK) + return retval; + + bytes_written += 2; + words_remaining--; + address += 2; + } + + if (bytes_remaining) + { + uint16_t value = 0xffff; + memcpy(&value, buffer + bytes_written, bytes_remaining); + + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG); + if (retval != ERROR_OK) + return retval; + retval = target_write_u16(target, address, value); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 5); + if (retval != ERROR_OK) + return retval; + } + + return target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); +} + +static int stm32x_probe(struct flash_bank *bank) +{ + struct target *target = bank->target; + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + int i; + uint16_t num_pages; + uint32_t device_id; + int page_size; + uint32_t base_address = 0x08000000; + + stm32x_info->probed = 0; + stm32x_info->register_offset = FLASH_OFFSET_B0; + + /* read stm32 device id register */ + int retval = target_read_u32(target, 0xE0042000, &device_id); + if (retval != ERROR_OK) + return retval; + LOG_INFO("device id = 0x%08" PRIx32 "", device_id); + + /* get flash size from target. */ + retval = target_read_u16(target, 0x1FFFF7E0, &num_pages); + if (retval != ERROR_OK) + { + LOG_WARNING("failed reading flash size, default to max target family"); + /* failed reading flash size, default to max target family */ + num_pages = 0xffff; + } + + if ((device_id & 0x7ff) == 0x410) + { + /* medium density - we have 1k pages + * 4 pages for a protection area */ + page_size = 1024; + stm32x_info->ppage_size = 4; + + /* check for early silicon */ + if (num_pages == 0xffff) + { + /* number of sectors incorrect on revA */ + LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash"); + num_pages = 128; + } + } + else if ((device_id & 0x7ff) == 0x412) + { + /* low density - we have 1k pages + * 4 pages for a protection area */ + page_size = 1024; + stm32x_info->ppage_size = 4; + + /* check for early silicon */ + if (num_pages == 0xffff) + { + /* number of sectors incorrect on revA */ + LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 32k flash"); + num_pages = 32; + } + } + else if ((device_id & 0x7ff) == 0x414) + { + /* high density - we have 2k pages + * 2 pages for a protection area */ + page_size = 2048; + stm32x_info->ppage_size = 2; + + /* check for early silicon */ + if (num_pages == 0xffff) + { + /* number of sectors incorrect on revZ */ + LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 512k flash"); + num_pages = 512; + } + } + else if ((device_id & 0x7ff) == 0x418) + { + /* connectivity line density - we have 2k pages + * 2 pages for a protection area */ + page_size = 2048; + stm32x_info->ppage_size = 2; + + /* check for early silicon */ + if (num_pages == 0xffff) + { + /* number of sectors incorrect on revZ */ + LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 256k flash"); + num_pages = 256; + } + } + else if ((device_id & 0x7ff) == 0x420) + { + /* value line density - we have 1k pages + * 4 pages for a protection area */ + page_size = 1024; + stm32x_info->ppage_size = 4; + + /* check for early silicon */ + if (num_pages == 0xffff) + { + /* number of sectors may be incorrrect on early silicon */ + LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash"); + num_pages = 128; + } + } + else if ((device_id & 0x7ff) == 0x430) + { + /* xl line density - we have 2k pages + * 2 pages for a protection area */ + page_size = 2048; + stm32x_info->ppage_size = 2; + stm32x_info->has_dual_banks = true; + + /* check for early silicon */ + if (num_pages == 0xffff) + { + /* number of sectors may be incorrrect on early silicon */ + LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 1024k flash"); + num_pages = 1024; + } + + /* split reported size into matching bank */ + if (bank->base != 0x08080000) + { + /* bank 0 will be fixed 512k */ + num_pages = 512; + } + else + { + num_pages -= 512; + /* bank1 also uses a register offset */ + stm32x_info->register_offset = FLASH_OFFSET_B1; + base_address = 0x08080000; + } + } + else + { + LOG_WARNING("Cannot identify target as a STM32 family."); + return ERROR_FAIL; + } + + LOG_INFO("flash size = %dkbytes", num_pages); + + /* calculate numbers of pages */ + num_pages /= (page_size / 1024); + + if (bank->sectors) + { + free(bank->sectors); + bank->sectors = NULL; + } + + bank->base = base_address; + bank->size = (num_pages * page_size); + bank->num_sectors = num_pages; + bank->sectors = malloc(sizeof(struct flash_sector) * num_pages); + + for (i = 0; i < num_pages; i++) + { + bank->sectors[i].offset = i * page_size; + bank->sectors[i].size = page_size; + bank->sectors[i].is_erased = -1; + bank->sectors[i].is_protected = 1; + } + + stm32x_info->probed = 1; + + return ERROR_OK; +} + +static int stm32x_auto_probe(struct flash_bank *bank) +{ + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + if (stm32x_info->probed) + return ERROR_OK; + return stm32x_probe(bank); +} + +#if 0 +COMMAND_HANDLER(stm32x_handle_part_id_command) +{ + return ERROR_OK; +} +#endif + +static int get_stm32x_info(struct flash_bank *bank, char *buf, int buf_size) +{ + struct target *target = bank->target; + uint32_t device_id; + int printed; + + /* read stm32 device id register */ + int retval = target_read_u32(target, 0xE0042000, &device_id); + if (retval != ERROR_OK) + return retval; + + if ((device_id & 0x7ff) == 0x410) + { + printed = snprintf(buf, buf_size, "stm32x (Medium Density) - Rev: "); + buf += printed; + buf_size -= printed; + + switch (device_id >> 16) + { + case 0x0000: + snprintf(buf, buf_size, "A"); + break; + + case 0x2000: + snprintf(buf, buf_size, "B"); + break; + + case 0x2001: + snprintf(buf, buf_size, "Z"); + break; + + case 0x2003: + snprintf(buf, buf_size, "Y"); + break; + + default: + snprintf(buf, buf_size, "unknown"); + break; + } + } + else if ((device_id & 0x7ff) == 0x412) + { + printed = snprintf(buf, buf_size, "stm32x (Low Density) - Rev: "); + buf += printed; + buf_size -= printed; + + switch (device_id >> 16) + { + case 0x1000: + snprintf(buf, buf_size, "A"); + break; + + default: + snprintf(buf, buf_size, "unknown"); + break; + } + } + else if ((device_id & 0x7ff) == 0x414) + { + printed = snprintf(buf, buf_size, "stm32x (High Density) - Rev: "); + buf += printed; + buf_size -= printed; + + switch (device_id >> 16) + { + case 0x1000: + snprintf(buf, buf_size, "A"); + break; + + case 0x1001: + snprintf(buf, buf_size, "Z"); + break; + + default: + snprintf(buf, buf_size, "unknown"); + break; + } + } + else if ((device_id & 0x7ff) == 0x418) + { + printed = snprintf(buf, buf_size, "stm32x (Connectivity) - Rev: "); + buf += printed; + buf_size -= printed; + + switch (device_id >> 16) + { + case 0x1000: + snprintf(buf, buf_size, "A"); + break; + + case 0x1001: + snprintf(buf, buf_size, "Z"); + break; + + default: + snprintf(buf, buf_size, "unknown"); + break; + } + } + else if ((device_id & 0x7ff) == 0x420) + { + printed = snprintf(buf, buf_size, "stm32x (Value) - Rev: "); + buf += printed; + buf_size -= printed; + + switch (device_id >> 16) + { + case 0x1000: + snprintf(buf, buf_size, "A"); + break; + + case 0x1001: + snprintf(buf, buf_size, "Z"); + break; + + default: + snprintf(buf, buf_size, "unknown"); + break; + } + } + else if ((device_id & 0x7ff) == 0x430) + { + printed = snprintf(buf, buf_size, "stm32x (XL) - Rev: "); + buf += printed; + buf_size -= printed; + + switch (device_id >> 16) + { + case 0x1000: + snprintf(buf, buf_size, "A"); + break; + + default: + snprintf(buf, buf_size, "unknown"); + break; + } + } + else + { + snprintf(buf, buf_size, "Cannot identify target as a stm32x\n"); + return ERROR_FAIL; + } + + return ERROR_OK; +} + +COMMAND_HANDLER(stm32x_handle_lock_command) +{ + struct target *target = NULL; + struct stm32x_flash_bank *stm32x_info = NULL; + + if (CMD_ARGC < 1) + { + command_print(CMD_CTX, "stm32x lock "); + return ERROR_OK; + } + + struct flash_bank *bank; + int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); + if (ERROR_OK != retval) + return retval; + + stm32x_info = bank->driver_priv; + + target = bank->target; + + if (target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + retval = stm32x_check_operation_supported(bank); + if (ERROR_OK != retval) + return retval; + + if (stm32x_erase_options(bank) != ERROR_OK) + { + command_print(CMD_CTX, "stm32x failed to erase options"); + return ERROR_OK; + } + + /* set readout protection */ + stm32x_info->option_bytes.RDP = 0; + + if (stm32x_write_options(bank) != ERROR_OK) + { + command_print(CMD_CTX, "stm32x failed to lock device"); + return ERROR_OK; + } + + command_print(CMD_CTX, "stm32x locked"); + + return ERROR_OK; +} + +COMMAND_HANDLER(stm32x_handle_unlock_command) +{ + struct target *target = NULL; + + if (CMD_ARGC < 1) + { + command_print(CMD_CTX, "stm32x unlock "); + return ERROR_OK; + } + + struct flash_bank *bank; + int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); + if (ERROR_OK != retval) + return retval; + + target = bank->target; + + if (target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + retval = stm32x_check_operation_supported(bank); + if (ERROR_OK != retval) + return retval; + + if (stm32x_erase_options(bank) != ERROR_OK) + { + command_print(CMD_CTX, "stm32x failed to unlock device"); + return ERROR_OK; + } + + if (stm32x_write_options(bank) != ERROR_OK) + { + command_print(CMD_CTX, "stm32x failed to lock device"); + return ERROR_OK; + } + + command_print(CMD_CTX, "stm32x unlocked.\n" + "INFO: a reset or power cycle is required " + "for the new settings to take effect."); + + return ERROR_OK; +} + +COMMAND_HANDLER(stm32x_handle_options_read_command) +{ + uint32_t optionbyte; + struct target *target = NULL; + struct stm32x_flash_bank *stm32x_info = NULL; + + if (CMD_ARGC < 1) + { + command_print(CMD_CTX, "stm32x options_read "); + return ERROR_OK; + } + + struct flash_bank *bank; + int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); + if (ERROR_OK != retval) + return retval; + + stm32x_info = bank->driver_priv; + + target = bank->target; + + if (target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + retval = stm32x_check_operation_supported(bank); + if (ERROR_OK != retval) + return retval; + + retval = target_read_u32(target, STM32_FLASH_OBR, &optionbyte); + if (retval != ERROR_OK) + return retval; + command_print(CMD_CTX, "Option Byte: 0x%" PRIx32 "", optionbyte); + + if (buf_get_u32((uint8_t*)&optionbyte, OPT_ERROR, 1)) + command_print(CMD_CTX, "Option Byte Complement Error"); + + if (buf_get_u32((uint8_t*)&optionbyte, OPT_READOUT, 1)) + command_print(CMD_CTX, "Readout Protection On"); + else + command_print(CMD_CTX, "Readout Protection Off"); + + if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDWDGSW, 1)) + command_print(CMD_CTX, "Software Watchdog"); + else + command_print(CMD_CTX, "Hardware Watchdog"); + + if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDRSTSTOP, 1)) + command_print(CMD_CTX, "Stop: No reset generated"); + else + command_print(CMD_CTX, "Stop: Reset generated"); + + if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDRSTSTDBY, 1)) + command_print(CMD_CTX, "Standby: No reset generated"); + else + command_print(CMD_CTX, "Standby: Reset generated"); + + if (stm32x_info->has_dual_banks) + { + if (buf_get_u32((uint8_t*)&optionbyte, OPT_BFB2, 1)) + command_print(CMD_CTX, "Boot: Bank 0"); + else + command_print(CMD_CTX, "Boot: Bank 1"); + } + + return ERROR_OK; +} + +COMMAND_HANDLER(stm32x_handle_options_write_command) +{ + struct target *target = NULL; + struct stm32x_flash_bank *stm32x_info = NULL; + uint16_t optionbyte = 0xF8; + + if (CMD_ARGC < 4) + { + command_print(CMD_CTX, "stm32x options_write " + " "); + return ERROR_OK; + } + + struct flash_bank *bank; + int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); + if (ERROR_OK != retval) + return retval; + + stm32x_info = bank->driver_priv; + + target = bank->target; + + if (target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + retval = stm32x_check_operation_supported(bank); + if (ERROR_OK != retval) + return retval; + + /* REVISIT: ignores some options which we will display... + * and doesn't insist on the specified syntax. + */ + + /* OPT_RDWDGSW */ + if (strcmp(CMD_ARGV[1], "SWWDG") == 0) + { + optionbyte |= (1 << 0); + } + else /* REVISIT must be "HWWDG" then ... */ + { + optionbyte &= ~(1 << 0); + } + + /* OPT_RDRSTSTOP */ + if (strcmp(CMD_ARGV[2], "NORSTSTOP") == 0) + { + optionbyte |= (1 << 1); + } + else /* REVISIT must be "RSTSTNDBY" then ... */ + { + optionbyte &= ~(1 << 1); + } + + /* OPT_RDRSTSTDBY */ + if (strcmp(CMD_ARGV[3], "NORSTSTNDBY") == 0) + { + optionbyte |= (1 << 2); + } + else /* REVISIT must be "RSTSTOP" then ... */ + { + optionbyte &= ~(1 << 2); + } + + if (CMD_ARGC > 4 && stm32x_info->has_dual_banks) + { + /* OPT_BFB2 */ + if (strcmp(CMD_ARGV[4], "BOOT0") == 0) + { + optionbyte |= (1 << 3); + } + else + { + optionbyte &= ~(1 << 3); + } + } + + if (stm32x_erase_options(bank) != ERROR_OK) + { + command_print(CMD_CTX, "stm32x failed to erase options"); + return ERROR_OK; + } + + stm32x_info->option_bytes.user_options = optionbyte; + + if (stm32x_write_options(bank) != ERROR_OK) + { + command_print(CMD_CTX, "stm32x failed to write options"); + return ERROR_OK; + } + + command_print(CMD_CTX, "stm32x write options complete.\n" + "INFO: a reset or power cycle is required " + "for the new settings to take effect."); + + return ERROR_OK; +} + +static int stm32x_mass_erase(struct flash_bank *bank) +{ + struct target *target = bank->target; + + if (target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + /* unlock option flash registers */ + int retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2); + if (retval != ERROR_OK) + return retval; + + /* mass erase flash memory */ + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_MER); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_MER | FLASH_STRT); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, 100); + if (retval != ERROR_OK) + return retval; + + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK); + if (retval != ERROR_OK) + return retval; + + return ERROR_OK; +} + +COMMAND_HANDLER(stm32x_handle_mass_erase_command) +{ + int i; + + if (CMD_ARGC < 1) + { + command_print(CMD_CTX, "stm32x mass_erase "); + return ERROR_OK; + } + + struct flash_bank *bank; + int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); + if (ERROR_OK != retval) + return retval; + + retval = stm32x_mass_erase(bank); + if (retval == ERROR_OK) + { + /* set all sectors as erased */ + for (i = 0; i < bank->num_sectors; i++) + { + bank->sectors[i].is_erased = 1; + } + + command_print(CMD_CTX, "stm32x mass erase complete"); + } + else + { + command_print(CMD_CTX, "stm32x mass erase failed"); + } + + return retval; +} + +static const struct command_registration stm32x_exec_command_handlers[] = { + { + .name = "lock", + .handler = stm32x_handle_lock_command, + .mode = COMMAND_EXEC, + .usage = "bank_id", + .help = "Lock entire flash device.", + }, + { + .name = "unlock", + .handler = stm32x_handle_unlock_command, + .mode = COMMAND_EXEC, + .usage = "bank_id", + .help = "Unlock entire protected flash device.", + }, + { + .name = "mass_erase", + .handler = stm32x_handle_mass_erase_command, + .mode = COMMAND_EXEC, + .usage = "bank_id", + .help = "Erase entire flash device.", + }, + { + .name = "options_read", + .handler = stm32x_handle_options_read_command, + .mode = COMMAND_EXEC, + .usage = "bank_id", + .help = "Read and display device option byte.", + }, + { + .name = "options_write", + .handler = stm32x_handle_options_write_command, + .mode = COMMAND_EXEC, + .usage = "bank_id ('SWWDG'|'HWWDG') " + "('RSTSTNDBY'|'NORSTSTNDBY') " + "('RSTSTOP'|'NORSTSTOP')", + .help = "Replace bits in device option byte.", + }, + COMMAND_REGISTRATION_DONE +}; + +static const struct command_registration stm32x_command_handlers[] = { + { + .name = "stm32f1x", + .mode = COMMAND_ANY, + .help = "stm32f1x flash command group", + .chain = stm32x_exec_command_handlers, + }, + COMMAND_REGISTRATION_DONE +}; + +struct flash_driver stm32f1x_flash = { + .name = "stm32f1x", + .commands = stm32x_command_handlers, + .flash_bank_command = stm32x_flash_bank_command, + .erase = stm32x_erase, + .protect = stm32x_protect, + .write = stm32x_write, + .read = default_flash_read, + .probe = stm32x_probe, + .auto_probe = stm32x_auto_probe, + .erase_check = default_flash_mem_blank_check, + .protect_check = stm32x_protect_check, + .info = get_stm32x_info, +}; diff --git a/src/flash/nor/stm32f2x.c b/src/flash/nor/stm32f2x.c new file mode 100644 index 00000000..c2f586a7 --- /dev/null +++ b/src/flash/nor/stm32f2x.c @@ -0,0 +1,706 @@ +/*************************************************************************** + * Copyright (C) 2005 by Dominic Rath * + * Dominic.Rath@gmx.de * + * * + * Copyright (C) 2008 by Spencer Oliver * + * spen@spen-soft.co.uk * + * * + * Copyright (C) 2011 Øyvind Harboe * + * oyvind.harboe@zylin.com * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "imp.h" +#include +#include +#include + +/* Regarding performance: + * + * Short story - it might be best to leave the performance at + * current levels. + * + * You may see a jump in speed if you change to using + * 32bit words for the block programming. + * + * Its a shame you cannot use the double word as its + * even faster - but you require external VPP for that mode. + * + * Having said all that 16bit writes give us the widest vdd + * operating range, so may be worth adding a note to that effect. + * + */ + +/* Danger!!!! The STM32F1x and STM32F2x series actually have + * quite different flash controllers. + * + * What's more scary is that the names of the registers and their + * addresses are the same, but the actual bits and what they do are + * can be very different. + * + * To reduce testing complexity and dangers of regressions, + * a seperate file is used for stm32fx2x. + * + * 1mByte part with 4 x 16, 1 x 64, 7 x 128kBytes sectors + * + * What's the protection page size??? + * + * Tested with STM3220F-EVAL board. + * + * STM32F21xx series for reference. + * + * RM0033 + * http://www.st.com/internet/mcu/product/250192.jsp + * + * PM0059 + * www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/PROGRAMMING_MANUAL/CD00233952.pdf + * + * STM32F1x series - notice that this code was copy, pasted and knocked + * into a stm32f2x driver, so in case something has been converted or + * bugs haven't been fixed, here are the original manuals: + * + * RM0008 - Reference manual + * + * RM0042, the Flash programming manual for low-, medium- high-density and + * connectivity line STM32F10x devices + * + * PM0068, the Flash programming manual for XL-density STM32F10x devices. + * + */ + + // Erase time can be as high as 1000ms, 10x this and it's toast... +#define FLASH_ERASE_TIMEOUT 10000 +#define FLASH_WRITE_TIMEOUT 5 + + +#define STM32_FLASH_BASE 0x40023c00 +#define STM32_FLASH_ACR 0x40023c00 +#define STM32_FLASH_KEYR 0x40023c04 +#define STM32_FLASH_OPTKEYR 0x40023c08 +#define STM32_FLASH_SR 0x40023c0C +#define STM32_FLASH_CR 0x40023c10 +#define STM32_FLASH_OPTCR 0x40023c14 +#define STM32_FLASH_OBR 0x40023c1C + + + +/* option byte location */ + +#define STM32_OB_RDP 0x1FFFF800 +#define STM32_OB_USER 0x1FFFF802 +#define STM32_OB_DATA0 0x1FFFF804 +#define STM32_OB_DATA1 0x1FFFF806 +#define STM32_OB_WRP0 0x1FFFF808 +#define STM32_OB_WRP1 0x1FFFF80A +#define STM32_OB_WRP2 0x1FFFF80C +#define STM32_OB_WRP3 0x1FFFF80E + +/* FLASH_CR register bits */ + +#define FLASH_PG (1 << 0) +#define FLASH_SER (1 << 1) +#define FLASH_MER (1 << 2) +#define FLASH_STRT (1 << 16) +#define FLASH_PSIZE_8 (0 << 8) +#define FLASH_PSIZE_16 (1 << 8) +#define FLASH_PSIZE_32 (2 << 8) +#define FLASH_PSIZE_64 (3 << 8) +#define FLASH_SNB(a) ((a) << 3) +#define FLASH_LOCK (1 << 31) + +/* FLASH_SR register bits */ + +#define FLASH_BSY (1 << 16) +#define FLASH_PGSERR (1 << 7) // Programming sequence error +#define FLASH_PGPERR (1 << 6) // Programming parallelism error +#define FLASH_PGAERR (1 << 5) // Programming alignment error +#define FLASH_WRPERR (1 << 4) // Write protection error +#define FLASH_OPERR (1 << 1) // Operation error + +#define FLASH_ERROR (FLASH_PGSERR | FLASH_PGPERR | FLASH_PGAERR| FLASH_WRPERR| FLASH_OPERR) + +/* STM32_FLASH_OBR bit definitions (reading) */ + +#define OPT_ERROR 0 +#define OPT_READOUT 1 +#define OPT_RDWDGSW 2 +#define OPT_RDRSTSTOP 3 +#define OPT_RDRSTSTDBY 4 +#define OPT_BFB2 5 /* dual flash bank only */ + +/* register unlock keys */ + +#define KEY1 0x45670123 +#define KEY2 0xCDEF89AB + +struct stm32x_flash_bank +{ + struct working_area *write_algorithm; + int probed; +}; + + +/* flash bank stm32x 0 0 + */ +FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command) +{ + struct stm32x_flash_bank *stm32x_info; + + if (CMD_ARGC < 6) + { + LOG_WARNING("incomplete flash_bank stm32x configuration"); + return ERROR_FLASH_BANK_INVALID; + } + + stm32x_info = malloc(sizeof(struct stm32x_flash_bank)); + bank->driver_priv = stm32x_info; + + stm32x_info->write_algorithm = NULL; + stm32x_info->probed = 0; + + return ERROR_OK; +} + +static inline int stm32x_get_flash_reg(struct flash_bank *bank, uint32_t reg) +{ + return reg; +} + +static inline int stm32x_get_flash_status(struct flash_bank *bank, uint32_t *status) +{ + struct target *target = bank->target; + return target_read_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), status); +} + +static int stm32x_wait_status_busy(struct flash_bank *bank, int timeout) +{ + struct target *target = bank->target; + uint32_t status; + int retval = ERROR_OK; + + /* wait for busy to clear */ + for (;;) + { + retval = stm32x_get_flash_status(bank, &status); + if (retval != ERROR_OK) + return retval; + LOG_DEBUG("status: 0x%" PRIx32 "", status); + if ((status & FLASH_BSY) == 0) + break; + if (timeout-- <= 0) + { + LOG_ERROR("timed out waiting for flash"); + return ERROR_FAIL; + } + alive_sleep(1); + } + + + if (status & FLASH_WRPERR) + { + LOG_ERROR("stm32x device protected"); + retval = ERROR_FAIL; + } + + /* Clear but report errors */ + if (status & FLASH_ERROR) + { + /* If this operation fails, we ignore it and report the original + * retval + */ + target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), + status & FLASH_ERROR); + } + return retval; +} + +static int stm32x_unlock_reg(struct target *target) +{ + /* unlock flash registers */ + int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1); + if (retval != ERROR_OK) + return retval; + + retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2); + if (retval != ERROR_OK) + return retval; + return ERROR_OK; +} + +static int stm32x_protect_check(struct flash_bank *bank) +{ + return ERROR_OK; +} + +static int stm32x_erase(struct flash_bank *bank, int first, int last) +{ + struct target *target = bank->target; + int i; + + if (bank->target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + int retval; + retval = stm32x_unlock_reg(target); + if (retval != ERROR_OK) + return retval; + + /* + Sector Erase + To erase a sector, follow the procedure below: + 1. Check that no Flash memory operation is ongoing by checking the BSY bit in the + FLASH_SR register + 2. Set the SER bit and select the sector (out of the 12 sectors in the main memory block) + you wish to erase (SNB) in the FLASH_CR register + 3. Set the STRT bit in the FLASH_CR register + 4. Wait for the BSY bit to be cleared + */ + + for (i = first; i <= last; i++) + { + retval = target_write_u32(target, + stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_SER | FLASH_SNB(i) | FLASH_STRT); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, FLASH_ERASE_TIMEOUT); + if (retval != ERROR_OK) + return retval; + + bank->sectors[i].is_erased = 1; + } + + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK); + if (retval != ERROR_OK) + return retval; + + return ERROR_OK; +} + +static int stm32x_protect(struct flash_bank *bank, int set, int first, int last) +{ + return ERROR_OK; +} + +static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer, + uint32_t offset, uint32_t count) +{ + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + struct target *target = bank->target; + uint32_t buffer_size = 16384; + struct working_area *source; + uint32_t address = bank->base + offset; + struct reg_param reg_params[5]; + struct armv7m_algorithm armv7m_info; + int retval = ERROR_OK; + + /* see contib/loaders/flash/stm32x.s for src */ + + static const uint16_t stm32x_flash_write_code_16[] = { +// 00000000 : + 0x4b07, // ldr r3, [pc, #28] (20 ) + 0x6123, // str r3, [r4, #16] + 0xf830, 0x3b02, //ldrh.w r3, [r0], #2 + 0xf821, 0x3b02, //strh.w r3, [r1], #2 + + //0000000c : + 0x68e3, //ldr r3, [r4, #12] +0xf413, 0x3f80, // tst.w r3, #65536 ; 0x10000 +0xd0fb, //beq.n c +0xf013, 0x0ff0, //tst.w r3, #240 ; 0xf0 +0xd101, //bne.n 1e +0x3a01, //subs r2, #1 +0xd1f0, //bne.n 0 + //0000001e : + 0xbe00, // bkpt 0x0000 + + //00000020 : + 0x0101, 0x0000, // .word 0x00000101 + + }; + + // Flip endian + uint8_t stm32x_flash_write_code[sizeof(stm32x_flash_write_code_16)*2]; + for (unsigned i = 0; i < sizeof(stm32x_flash_write_code_16) / 2; i++) + { + stm32x_flash_write_code[i*2 + 0] = stm32x_flash_write_code_16[i] & 0xff; + stm32x_flash_write_code[i*2 + 1] = (stm32x_flash_write_code_16[i] >> 8) & 0xff; + } + + if (target_alloc_working_area(target, sizeof(stm32x_flash_write_code), + &stm32x_info->write_algorithm) != ERROR_OK) + { + LOG_WARNING("no working area available, can't do block memory writes"); + return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; + }; + + if ((retval = target_write_buffer(target, stm32x_info->write_algorithm->address, + sizeof(stm32x_flash_write_code), + (uint8_t*)stm32x_flash_write_code)) != ERROR_OK) + return retval; + + /* memory buffer */ + while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) + { + buffer_size /= 2; + if (buffer_size <= 256) + { + /* if we already allocated the writing code, but failed to get a + * buffer, free the algorithm */ + if (stm32x_info->write_algorithm) + target_free_working_area(target, stm32x_info->write_algorithm); + + LOG_WARNING("no large enough working area available, can't do block memory writes"); + return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; + } + }; + + armv7m_info.common_magic = ARMV7M_COMMON_MAGIC; + armv7m_info.core_mode = ARMV7M_MODE_ANY; + + init_reg_param(®_params[0], "r0", 32, PARAM_OUT); + init_reg_param(®_params[1], "r1", 32, PARAM_OUT); + init_reg_param(®_params[2], "r2", 32, PARAM_OUT); + init_reg_param(®_params[3], "r3", 32, PARAM_IN_OUT); + init_reg_param(®_params[4], "r4", 32, PARAM_OUT); + + while (count > 0) + { + uint32_t thisrun_count = (count > (buffer_size / 2)) ? + (buffer_size / 2) : count; + + if ((retval = target_write_buffer(target, source->address, + thisrun_count * 2, buffer)) != ERROR_OK) + break; + + buf_set_u32(reg_params[0].value, 0, 32, source->address); + buf_set_u32(reg_params[1].value, 0, 32, address); + buf_set_u32(reg_params[2].value, 0, 32, thisrun_count); + // R3 is a return value only + buf_set_u32(reg_params[4].value, 0, 32, STM32_FLASH_BASE); + + if ((retval = target_run_algorithm(target, 0, NULL, + sizeof(reg_params) / sizeof(*reg_params), + reg_params, + stm32x_info->write_algorithm->address, + 0, + 10000, &armv7m_info)) != ERROR_OK) + { + LOG_ERROR("error executing stm32x flash write algorithm"); + break; + } + + uint32_t error = buf_get_u32(reg_params[3].value, 0, 32) & FLASH_ERROR; + + if (error & FLASH_WRPERR) + { + LOG_ERROR("flash memory write protected"); + } + + if (error != 0) + { + LOG_ERROR("flash write failed = %08x", error); + /* Clear but report errors */ + target_write_u32(target, STM32_FLASH_SR, error); + retval = ERROR_FAIL; + break; + } + + buffer += thisrun_count * 2; + address += thisrun_count * 2; + count -= thisrun_count; + } + + target_free_working_area(target, source); + target_free_working_area(target, stm32x_info->write_algorithm); + + destroy_reg_param(®_params[0]); + destroy_reg_param(®_params[1]); + destroy_reg_param(®_params[2]); + destroy_reg_param(®_params[3]); + destroy_reg_param(®_params[4]); + + return retval; +} + +static int stm32x_write(struct flash_bank *bank, uint8_t *buffer, + uint32_t offset, uint32_t count) +{ + struct target *target = bank->target; + uint32_t words_remaining = (count / 2); + uint32_t bytes_remaining = (count & 0x00000001); + uint32_t address = bank->base + offset; + uint32_t bytes_written = 0; + int retval; + + if (bank->target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + if (offset & 0x1) + { + LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset); + return ERROR_FLASH_DST_BREAKS_ALIGNMENT; + } + + retval = stm32x_unlock_reg(target); + if (retval != ERROR_OK) + return retval; + + /* multiple half words (2-byte) to be programmed? */ + if (words_remaining > 0) + { + /* try using a block write */ + if ((retval = stm32x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK) + { + if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) + { + /* if block write failed (no sufficient working area), + * we use normal (slow) single dword accesses */ + LOG_WARNING("couldn't use block writes, falling back to single memory accesses"); + } + } + else + { + buffer += words_remaining * 2; + address += words_remaining * 2; + words_remaining = 0; + } + } + + if ((retval != ERROR_OK) && (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE)) + return retval; + + /* + Standard programming + The Flash memory programming sequence is as follows: + 1. Check that no main Flash memory operation is ongoing by checking the BSY bit in the + FLASH_SR register. + 2. Set the PG bit in the FLASH_CR register + 3. Perform the data write operation(s) to the desired memory address (inside main + memory block or OTP area): + – – Half-word access in case of x16 parallelism + – Word access in case of x32 parallelism + – + 4. + Byte access in case of x8 parallelism + Double word access in case of x64 parallelism + Wait for the BSY bit to be cleared + */ + while (words_remaining > 0) + { + uint16_t value; + memcpy(&value, buffer + bytes_written, sizeof(uint16_t)); + + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), + FLASH_PG | FLASH_PSIZE_16); + if (retval != ERROR_OK) + return retval; + + retval = target_write_u16(target, address, value); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, FLASH_WRITE_TIMEOUT); + if (retval != ERROR_OK) + return retval; + + bytes_written += 2; + words_remaining--; + address += 2; + } + + if (bytes_remaining) + { + retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), + FLASH_PG | FLASH_PSIZE_8); + if (retval != ERROR_OK) + return retval; + retval = target_write_u8(target, address, buffer[bytes_written]); + if (retval != ERROR_OK) + return retval; + + retval = stm32x_wait_status_busy(bank, FLASH_WRITE_TIMEOUT); + if (retval != ERROR_OK) + return retval; + } + + return target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); +} + +static void setup_sector(struct flash_bank *bank, int start, int num, int size) +{ + for (int i = start; i < (start + num) ; i++) + { + bank->sectors[i].offset = bank->size; + bank->sectors[i].size = size; + bank->size += bank->sectors[i].size; + } +} + +static int stm32x_probe(struct flash_bank *bank) +{ + struct target *target = bank->target; + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + int i; + uint16_t num_pages; + uint32_t device_id; + uint32_t base_address = 0x08000000; + + stm32x_info->probed = 0; + + /* read stm32 device id register */ + int retval = target_read_u32(target, 0xE0042000, &device_id); + if (retval != ERROR_OK) + return retval; + LOG_INFO("device id = 0x%08" PRIx32 "", device_id); + + if ((device_id & 0x7ff) != 0x411) + { + LOG_WARNING("Cannot identify target as a STM32 family, try the other STM32 drivers."); + return ERROR_FAIL; + } + + /* sectors sizes vary, handle this in a different code path + * than the rest. + */ + // Uhhh.... what to use here? + + /* calculate numbers of pages*/ + num_pages = 4 + 1 + 7; + + if (bank->sectors) + { + free(bank->sectors); + bank->sectors = NULL; + } + + bank->base = base_address; + bank->num_sectors = num_pages; + bank->sectors = malloc(sizeof(struct flash_sector) * num_pages); + + bank->size = 0; + setup_sector(bank, 0, 4, 16 * 1024); + setup_sector(bank, 4, 1, 64 * 1024); + setup_sector(bank, 4+1, 7, 128 * 1024); + + for (i = 0; i < num_pages; i++) + { + bank->sectors[i].is_erased = -1; + bank->sectors[i].is_protected = 0; + } + + LOG_INFO("flash size = %dkBytes", bank->size / 1024); + + stm32x_info->probed = 1; + + return ERROR_OK; +} + +static int stm32x_auto_probe(struct flash_bank *bank) +{ + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + if (stm32x_info->probed) + return ERROR_OK; + return stm32x_probe(bank); +} + +static int get_stm32x_info(struct flash_bank *bank, char *buf, int buf_size) +{ + struct target *target = bank->target; + uint32_t device_id; + int printed; + + /* read stm32 device id register */ + int retval = target_read_u32(target, 0xE0042000, &device_id); + if (retval != ERROR_OK) + return retval; + + if ((device_id & 0x7ff) == 0x411) + { + printed = snprintf(buf, buf_size, "stm32x (1mByte part) - Rev: "); + buf += printed; + buf_size -= printed; + + switch (device_id >> 16) + { + case 0x1000: + snprintf(buf, buf_size, "A"); + break; + + case 0x2000: + snprintf(buf, buf_size, "B"); + break; + + case 0x1001: + snprintf(buf, buf_size, "Z"); + break; + + case 0x2001: + snprintf(buf, buf_size, "Y"); + break; + + default: + snprintf(buf, buf_size, "unknown"); + break; + } + } + else + { + snprintf(buf, buf_size, "Cannot identify target as a stm32x\n"); + return ERROR_FAIL; + } + + return ERROR_OK; +} + +static const struct command_registration stm32x_exec_command_handlers[] = { + COMMAND_REGISTRATION_DONE +}; + +static const struct command_registration stm32x_command_handlers[] = { + { + .name = "stm32f2x", + .mode = COMMAND_ANY, + .help = "stm32f2x flash command group", + .chain = stm32x_exec_command_handlers, + }, + COMMAND_REGISTRATION_DONE +}; + +struct flash_driver stm32f2x_flash = { + .name = "stm32f2x", + .commands = stm32x_command_handlers, + .flash_bank_command = stm32x_flash_bank_command, + .erase = stm32x_erase, + .protect = stm32x_protect, + .write = stm32x_write, + .read = default_flash_read, + .probe = stm32x_probe, + .auto_probe = stm32x_auto_probe, + .erase_check = default_flash_mem_blank_check, + .protect_check = stm32x_protect_check, + .info = get_stm32x_info, +}; diff --git a/src/flash/nor/stm32f2xxx.c b/src/flash/nor/stm32f2xxx.c deleted file mode 100644 index df50e84b..00000000 --- a/src/flash/nor/stm32f2xxx.c +++ /dev/null @@ -1,707 +0,0 @@ -/*************************************************************************** - * Copyright (C) 2005 by Dominic Rath * - * Dominic.Rath@gmx.de * - * * - * Copyright (C) 2008 by Spencer Oliver * - * spen@spen-soft.co.uk * - * * - * Copyright (C) 2011 Øyvind Harboe * - * oyvind.harboe@zylin.com * - * * - * This program is free software; you can redistribute it and/or modify * - * it under the terms of the GNU General Public License as published by * - * the Free Software Foundation; either version 2 of the License, or * - * (at your option) any later version. * - * * - * This program is distributed in the hope that it will be useful, * - * but WITHOUT ANY WARRANTY; without even the implied warranty of * - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * - * GNU General Public License for more details. * - * * - * You should have received a copy of the GNU General Public License * - * along with this program; if not, write to the * - * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - ***************************************************************************/ -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "imp.h" -#include -#include -#include - -/* Regarding performance: - * - * Short story - it might be best to leave the performance at - * current levels. - * - * You may see a jump in speed if you change to using - * 32bit words for the block programming. - * - * Its a shame you cannot use the double word as its - * even faster - but you require external VPP for that mode. - * - * Having said all that 16bit writes give us the widest vdd - * operating range, so may be worth adding a note to that effect. - * - */ - - -/* Danger!!!! The STM32F1xxxx and STM32F2xxxx series actually have - * quite different flash controllers. - * - * What's more scary is that the names of the registers and their - * addresses are the same, but the actual bits and what they do are - * can be very different. - * - * To reduce testing complexity and dangers of regressions, - * a seperate file is used for stm32fx2222. - * - * 1mByte part with 4 x 16, 1 x 64, 7 x 128kBytes sectors - * - * What's the protection page size??? - * - * Tested with STM3220F-EVAL board. - * - * STM32F21xx series for reference. - * - * RM0033 - * http://www.st.com/internet/mcu/product/250192.jsp - * - * PM0059 - * www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/PROGRAMMING_MANUAL/CD00233952.pdf - * - * STM32F1xxx series - notice that this code was copy, pasted and knocked - * into a stm32f2xxx driver, so in case something has been converted or - * bugs haven't been fixed, here are the original manuals: - * - * RM0008 - Reference manual - * - * RM0042, the Flash programming manual for low-, medium- high-density and - * connectivity line STM32F10xxx devices - * - * PM0068, the Flash programming manual for XL-density STM32F10xxx devices. - * - */ - - // Erase time can be as high as 1000ms, 10x this and it's toast... -#define FLASH_ERASE_TIMEOUT 10000 -#define FLASH_WRITE_TIMEOUT 5 - - -#define STM32_FLASH_BASE 0x40023c00 -#define STM32_FLASH_ACR 0x40023c00 -#define STM32_FLASH_KEYR 0x40023c04 -#define STM32_FLASH_OPTKEYR 0x40023c08 -#define STM32_FLASH_SR 0x40023c0C -#define STM32_FLASH_CR 0x40023c10 -#define STM32_FLASH_OPTCR 0x40023c14 -#define STM32_FLASH_OBR 0x40023c1C - - - -/* option byte location */ - -#define STM32_OB_RDP 0x1FFFF800 -#define STM32_OB_USER 0x1FFFF802 -#define STM32_OB_DATA0 0x1FFFF804 -#define STM32_OB_DATA1 0x1FFFF806 -#define STM32_OB_WRP0 0x1FFFF808 -#define STM32_OB_WRP1 0x1FFFF80A -#define STM32_OB_WRP2 0x1FFFF80C -#define STM32_OB_WRP3 0x1FFFF80E - -/* FLASH_CR register bits */ - -#define FLASH_PG (1 << 0) -#define FLASH_SER (1 << 1) -#define FLASH_MER (1 << 2) -#define FLASH_STRT (1 << 16) -#define FLASH_PSIZE_8 (0 << 8) -#define FLASH_PSIZE_16 (1 << 8) -#define FLASH_PSIZE_32 (2 << 8) -#define FLASH_PSIZE_64 (3 << 8) -#define FLASH_SNB(a) ((a) << 3) -#define FLASH_LOCK (1 << 31) - -/* FLASH_SR register bits */ - -#define FLASH_BSY (1 << 16) -#define FLASH_PGSERR (1 << 7) // Programming sequence error -#define FLASH_PGPERR (1 << 6) // Programming parallelism error -#define FLASH_PGAERR (1 << 5) // Programming alignment error -#define FLASH_WRPERR (1 << 4) // Write protection error -#define FLASH_OPERR (1 << 1) // Operation error - -#define FLASH_ERROR (FLASH_PGSERR | FLASH_PGPERR | FLASH_PGAERR| FLASH_WRPERR| FLASH_OPERR) - -/* STM32_FLASH_OBR bit definitions (reading) */ - -#define OPT_ERROR 0 -#define OPT_READOUT 1 -#define OPT_RDWDGSW 2 -#define OPT_RDRSTSTOP 3 -#define OPT_RDRSTSTDBY 4 -#define OPT_BFB2 5 /* dual flash bank only */ - -/* register unlock keys */ - -#define KEY1 0x45670123 -#define KEY2 0xCDEF89AB - -struct stm32x_flash_bank -{ - struct working_area *write_algorithm; - int probed; -}; - - -/* flash bank stm32x 0 0 - */ -FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command) -{ - struct stm32x_flash_bank *stm32x_info; - - if (CMD_ARGC < 6) - { - LOG_WARNING("incomplete flash_bank stm32x configuration"); - return ERROR_FLASH_BANK_INVALID; - } - - stm32x_info = malloc(sizeof(struct stm32x_flash_bank)); - bank->driver_priv = stm32x_info; - - stm32x_info->write_algorithm = NULL; - stm32x_info->probed = 0; - - return ERROR_OK; -} - -static inline int stm32x_get_flash_reg(struct flash_bank *bank, uint32_t reg) -{ - return reg; -} - -static inline int stm32x_get_flash_status(struct flash_bank *bank, uint32_t *status) -{ - struct target *target = bank->target; - return target_read_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), status); -} - -static int stm32x_wait_status_busy(struct flash_bank *bank, int timeout) -{ - struct target *target = bank->target; - uint32_t status; - int retval = ERROR_OK; - - /* wait for busy to clear */ - for (;;) - { - retval = stm32x_get_flash_status(bank, &status); - if (retval != ERROR_OK) - return retval; - LOG_DEBUG("status: 0x%" PRIx32 "", status); - if ((status & FLASH_BSY) == 0) - break; - if (timeout-- <= 0) - { - LOG_ERROR("timed out waiting for flash"); - return ERROR_FAIL; - } - alive_sleep(1); - } - - - if (status & FLASH_WRPERR) - { - LOG_ERROR("stm32x device protected"); - retval = ERROR_FAIL; - } - - /* Clear but report errors */ - if (status & FLASH_ERROR) - { - /* If this operation fails, we ignore it and report the original - * retval - */ - target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), - status & FLASH_ERROR); - } - return retval; -} - -static int stm32x_unlock_reg(struct target *target) -{ - /* unlock flash registers */ - int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1); - if (retval != ERROR_OK) - return retval; - - retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2); - if (retval != ERROR_OK) - return retval; - return ERROR_OK; -} - -static int stm32x_protect_check(struct flash_bank *bank) -{ - return ERROR_OK; -} - -static int stm32x_erase(struct flash_bank *bank, int first, int last) -{ - struct target *target = bank->target; - int i; - - if (bank->target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - int retval; - retval = stm32x_unlock_reg(target); - if (retval != ERROR_OK) - return retval; - - /* - Sector Erase - To erase a sector, follow the procedure below: - 1. Check that no Flash memory operation is ongoing by checking the BSY bit in the - FLASH_SR register - 2. Set the SER bit and select the sector (out of the 12 sectors in the main memory block) - you wish to erase (SNB) in the FLASH_CR register - 3. Set the STRT bit in the FLASH_CR register - 4. Wait for the BSY bit to be cleared - */ - - for (i = first; i <= last; i++) - { - retval = target_write_u32(target, - stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_SER | FLASH_SNB(i) | FLASH_STRT); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, FLASH_ERASE_TIMEOUT); - if (retval != ERROR_OK) - return retval; - - bank->sectors[i].is_erased = 1; - } - - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK); - if (retval != ERROR_OK) - return retval; - - return ERROR_OK; -} - -static int stm32x_protect(struct flash_bank *bank, int set, int first, int last) -{ - return ERROR_OK; -} - -static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer, - uint32_t offset, uint32_t count) -{ - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - struct target *target = bank->target; - uint32_t buffer_size = 16384; - struct working_area *source; - uint32_t address = bank->base + offset; - struct reg_param reg_params[5]; - struct armv7m_algorithm armv7m_info; - int retval = ERROR_OK; - - /* see contib/loaders/flash/stm32x.s for src */ - - static const uint16_t stm32x_flash_write_code_16[] = { -// 00000000 : - 0x4b07, // ldr r3, [pc, #28] (20 ) - 0x6123, // str r3, [r4, #16] - 0xf830, 0x3b02, //ldrh.w r3, [r0], #2 - 0xf821, 0x3b02, //strh.w r3, [r1], #2 - - //0000000c : - 0x68e3, //ldr r3, [r4, #12] -0xf413, 0x3f80, // tst.w r3, #65536 ; 0x10000 -0xd0fb, //beq.n c -0xf013, 0x0ff0, //tst.w r3, #240 ; 0xf0 -0xd101, //bne.n 1e -0x3a01, //subs r2, #1 -0xd1f0, //bne.n 0 - //0000001e : - 0xbe00, // bkpt 0x0000 - - //00000020 : - 0x0101, 0x0000, // .word 0x00000101 - - }; - - // Flip endian - uint8_t stm32x_flash_write_code[sizeof(stm32x_flash_write_code_16)*2]; - for (unsigned i = 0; i < sizeof(stm32x_flash_write_code_16) / 2; i++) - { - stm32x_flash_write_code[i*2 + 0] = stm32x_flash_write_code_16[i] & 0xff; - stm32x_flash_write_code[i*2 + 1] = (stm32x_flash_write_code_16[i] >> 8) & 0xff; - } - - if (target_alloc_working_area(target, sizeof(stm32x_flash_write_code), - &stm32x_info->write_algorithm) != ERROR_OK) - { - LOG_WARNING("no working area available, can't do block memory writes"); - return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; - }; - - if ((retval = target_write_buffer(target, stm32x_info->write_algorithm->address, - sizeof(stm32x_flash_write_code), - (uint8_t*)stm32x_flash_write_code)) != ERROR_OK) - return retval; - - /* memory buffer */ - while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) - { - buffer_size /= 2; - if (buffer_size <= 256) - { - /* if we already allocated the writing code, but failed to get a - * buffer, free the algorithm */ - if (stm32x_info->write_algorithm) - target_free_working_area(target, stm32x_info->write_algorithm); - - LOG_WARNING("no large enough working area available, can't do block memory writes"); - return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; - } - }; - - armv7m_info.common_magic = ARMV7M_COMMON_MAGIC; - armv7m_info.core_mode = ARMV7M_MODE_ANY; - - init_reg_param(®_params[0], "r0", 32, PARAM_OUT); - init_reg_param(®_params[1], "r1", 32, PARAM_OUT); - init_reg_param(®_params[2], "r2", 32, PARAM_OUT); - init_reg_param(®_params[3], "r3", 32, PARAM_IN_OUT); - init_reg_param(®_params[4], "r4", 32, PARAM_OUT); - - while (count > 0) - { - uint32_t thisrun_count = (count > (buffer_size / 2)) ? - (buffer_size / 2) : count; - - if ((retval = target_write_buffer(target, source->address, - thisrun_count * 2, buffer)) != ERROR_OK) - break; - - buf_set_u32(reg_params[0].value, 0, 32, source->address); - buf_set_u32(reg_params[1].value, 0, 32, address); - buf_set_u32(reg_params[2].value, 0, 32, thisrun_count); - // R3 is a return value only - buf_set_u32(reg_params[4].value, 0, 32, STM32_FLASH_BASE); - - if ((retval = target_run_algorithm(target, 0, NULL, - sizeof(reg_params) / sizeof(*reg_params), - reg_params, - stm32x_info->write_algorithm->address, - 0, - 10000, &armv7m_info)) != ERROR_OK) - { - LOG_ERROR("error executing stm32x flash write algorithm"); - break; - } - - uint32_t error = buf_get_u32(reg_params[3].value, 0, 32) & FLASH_ERROR; - - if (error & FLASH_WRPERR) - { - LOG_ERROR("flash memory write protected"); - } - - if (error != 0) - { - LOG_ERROR("flash write failed = %08x", error); - /* Clear but report errors */ - target_write_u32(target, STM32_FLASH_SR, error); - retval = ERROR_FAIL; - break; - } - - buffer += thisrun_count * 2; - address += thisrun_count * 2; - count -= thisrun_count; - } - - target_free_working_area(target, source); - target_free_working_area(target, stm32x_info->write_algorithm); - - destroy_reg_param(®_params[0]); - destroy_reg_param(®_params[1]); - destroy_reg_param(®_params[2]); - destroy_reg_param(®_params[3]); - destroy_reg_param(®_params[4]); - - return retval; -} - -static int stm32x_write(struct flash_bank *bank, uint8_t *buffer, - uint32_t offset, uint32_t count) -{ - struct target *target = bank->target; - uint32_t words_remaining = (count / 2); - uint32_t bytes_remaining = (count & 0x00000001); - uint32_t address = bank->base + offset; - uint32_t bytes_written = 0; - int retval; - - if (bank->target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if (offset & 0x1) - { - LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset); - return ERROR_FLASH_DST_BREAKS_ALIGNMENT; - } - - retval = stm32x_unlock_reg(target); - if (retval != ERROR_OK) - return retval; - - /* multiple half words (2-byte) to be programmed? */ - if (words_remaining > 0) - { - /* try using a block write */ - if ((retval = stm32x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK) - { - if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) - { - /* if block write failed (no sufficient working area), - * we use normal (slow) single dword accesses */ - LOG_WARNING("couldn't use block writes, falling back to single memory accesses"); - } - } - else - { - buffer += words_remaining * 2; - address += words_remaining * 2; - words_remaining = 0; - } - } - - if ((retval != ERROR_OK) && (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE)) - return retval; - - /* - Standard programming - The Flash memory programming sequence is as follows: - 1. Check that no main Flash memory operation is ongoing by checking the BSY bit in the - FLASH_SR register. - 2. Set the PG bit in the FLASH_CR register - 3. Perform the data write operation(s) to the desired memory address (inside main - memory block or OTP area): - – – Half-word access in case of x16 parallelism - – Word access in case of x32 parallelism - – - 4. - Byte access in case of x8 parallelism - Double word access in case of x64 parallelism - Wait for the BSY bit to be cleared - */ - while (words_remaining > 0) - { - uint16_t value; - memcpy(&value, buffer + bytes_written, sizeof(uint16_t)); - - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), - FLASH_PG | FLASH_PSIZE_16); - if (retval != ERROR_OK) - return retval; - - retval = target_write_u16(target, address, value); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, FLASH_WRITE_TIMEOUT); - if (retval != ERROR_OK) - return retval; - - bytes_written += 2; - words_remaining--; - address += 2; - } - - if (bytes_remaining) - { - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), - FLASH_PG | FLASH_PSIZE_8); - if (retval != ERROR_OK) - return retval; - retval = target_write_u8(target, address, buffer[bytes_written]); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, FLASH_WRITE_TIMEOUT); - if (retval != ERROR_OK) - return retval; - } - - return target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); -} - -static void setup_sector(struct flash_bank *bank, int start, int num, int size) -{ - for (int i = start; i < (start + num) ; i++) - { - bank->sectors[i].offset = bank->size; - bank->sectors[i].size = size; - bank->size += bank->sectors[i].size; - } -} - -static int stm32x_probe(struct flash_bank *bank) -{ - struct target *target = bank->target; - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - int i; - uint16_t num_pages; - uint32_t device_id; - uint32_t base_address = 0x08000000; - - stm32x_info->probed = 0; - - /* read stm32 device id register */ - int retval = target_read_u32(target, 0xE0042000, &device_id); - if (retval != ERROR_OK) - return retval; - LOG_INFO("device id = 0x%08" PRIx32 "", device_id); - - if ((device_id & 0x7ff) != 0x411) - { - LOG_WARNING("Cannot identify target as a STM32 family, try the other STM32 drivers."); - return ERROR_FAIL; - } - - /* sectors sizes vary, handle this in a different code path - * than the rest. - */ - // Uhhh.... what to use here? - - /* calculate numbers of pages*/ - num_pages = 4 + 1 + 7; - - if (bank->sectors) - { - free(bank->sectors); - bank->sectors = NULL; - } - - bank->base = base_address; - bank->num_sectors = num_pages; - bank->sectors = malloc(sizeof(struct flash_sector) * num_pages); - - bank->size = 0; - setup_sector(bank, 0, 4, 16 * 1024); - setup_sector(bank, 4, 1, 64 * 1024); - setup_sector(bank, 4+1, 7, 128 * 1024); - - for (i = 0; i < num_pages; i++) - { - bank->sectors[i].is_erased = -1; - bank->sectors[i].is_protected = 0; - } - - LOG_INFO("flash size = %dkBytes", bank->size / 1024); - - stm32x_info->probed = 1; - - return ERROR_OK; -} - -static int stm32x_auto_probe(struct flash_bank *bank) -{ - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - if (stm32x_info->probed) - return ERROR_OK; - return stm32x_probe(bank); -} - -static int get_stm32x_info(struct flash_bank *bank, char *buf, int buf_size) -{ - struct target *target = bank->target; - uint32_t device_id; - int printed; - - /* read stm32 device id register */ - int retval = target_read_u32(target, 0xE0042000, &device_id); - if (retval != ERROR_OK) - return retval; - - if ((device_id & 0x7ff) == 0x411) - { - printed = snprintf(buf, buf_size, "stm32x (1mByte part) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - case 0x2000: - snprintf(buf, buf_size, "B"); - break; - - case 0x1001: - snprintf(buf, buf_size, "Z"); - break; - - case 0x2001: - snprintf(buf, buf_size, "Y"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else - { - snprintf(buf, buf_size, "Cannot identify target as a stm32x\n"); - return ERROR_FAIL; - } - - return ERROR_OK; -} - -static const struct command_registration stm32x_exec_command_handlers[] = { - COMMAND_REGISTRATION_DONE -}; - -static const struct command_registration stm32x_command_handlers[] = { - { - .name = "stm32f2xxx", - .mode = COMMAND_ANY, - .help = "stm32f2xxx flash command group", - .chain = stm32x_exec_command_handlers, - }, - COMMAND_REGISTRATION_DONE -}; - -struct flash_driver stm32xf2xxx_flash = { - .name = "stm32f2xxx", - .commands = stm32x_command_handlers, - .flash_bank_command = stm32x_flash_bank_command, - .erase = stm32x_erase, - .protect = stm32x_protect, - .write = stm32x_write, - .read = default_flash_read, - .probe = stm32x_probe, - .auto_probe = stm32x_auto_probe, - .erase_check = default_flash_mem_blank_check, - .protect_check = stm32x_protect_check, - .info = get_stm32x_info, -}; diff --git a/src/flash/nor/stm32x.c b/src/flash/nor/stm32x.c deleted file mode 100644 index b4300bef..00000000 --- a/src/flash/nor/stm32x.c +++ /dev/null @@ -1,1568 +0,0 @@ -/*************************************************************************** - * Copyright (C) 2005 by Dominic Rath * - * Dominic.Rath@gmx.de * - * * - * Copyright (C) 2008 by Spencer Oliver * - * spen@spen-soft.co.uk * - * * - * This program is free software; you can redistribute it and/or modify * - * it under the terms of the GNU General Public License as published by * - * the Free Software Foundation; either version 2 of the License, or * - * (at your option) any later version. * - * * - * This program is distributed in the hope that it will be useful, * - * but WITHOUT ANY WARRANTY; without even the implied warranty of * - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * - * GNU General Public License for more details. * - * * - * You should have received a copy of the GNU General Public License * - * along with this program; if not, write to the * - * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - ***************************************************************************/ -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "imp.h" -#include -#include -#include - -/* stm32x register locations */ - -#define STM32_FLASH_ACR 0x40022000 -#define STM32_FLASH_KEYR 0x40022004 -#define STM32_FLASH_OPTKEYR 0x40022008 -#define STM32_FLASH_SR 0x4002200C -#define STM32_FLASH_CR 0x40022010 -#define STM32_FLASH_AR 0x40022014 -#define STM32_FLASH_OBR 0x4002201C -#define STM32_FLASH_WRPR 0x40022020 - -/* option byte location */ - -#define STM32_OB_RDP 0x1FFFF800 -#define STM32_OB_USER 0x1FFFF802 -#define STM32_OB_DATA0 0x1FFFF804 -#define STM32_OB_DATA1 0x1FFFF806 -#define STM32_OB_WRP0 0x1FFFF808 -#define STM32_OB_WRP1 0x1FFFF80A -#define STM32_OB_WRP2 0x1FFFF80C -#define STM32_OB_WRP3 0x1FFFF80E - -/* FLASH_CR register bits */ - -#define FLASH_PG (1 << 0) -#define FLASH_PER (1 << 1) -#define FLASH_MER (1 << 2) -#define FLASH_OPTPG (1 << 4) -#define FLASH_OPTER (1 << 5) -#define FLASH_STRT (1 << 6) -#define FLASH_LOCK (1 << 7) -#define FLASH_OPTWRE (1 << 9) - -/* FLASH_SR register bits */ - -#define FLASH_BSY (1 << 0) -#define FLASH_PGERR (1 << 2) -#define FLASH_WRPRTERR (1 << 4) -#define FLASH_EOP (1 << 5) - -/* STM32_FLASH_OBR bit definitions (reading) */ - -#define OPT_ERROR 0 -#define OPT_READOUT 1 -#define OPT_RDWDGSW 2 -#define OPT_RDRSTSTOP 3 -#define OPT_RDRSTSTDBY 4 -#define OPT_BFB2 5 /* dual flash bank only */ - -/* register unlock keys */ - -#define KEY1 0x45670123 -#define KEY2 0xCDEF89AB - -/* we use an offset to access the second bank on dual flash devices - * strangely the protection of the second bank is done on the bank0 reg's */ - -#define FLASH_OFFSET_B0 0x00 -#define FLASH_OFFSET_B1 0x40 - -struct stm32x_options -{ - uint16_t RDP; - uint16_t user_options; - uint16_t protection[4]; -}; - -struct stm32x_flash_bank -{ - struct stm32x_options option_bytes; - struct working_area *write_algorithm; - int ppage_size; - int probed; - - bool has_dual_banks; - /* used to access dual flash bank stm32xl - * 0x00 will address bank 0 flash - * 0x40 will address bank 1 flash */ - int register_offset; -}; - -static int stm32x_mass_erase(struct flash_bank *bank); - -/* flash bank stm32x 0 0 - */ -FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command) -{ - struct stm32x_flash_bank *stm32x_info; - - if (CMD_ARGC < 6) - { - LOG_WARNING("incomplete flash_bank stm32x configuration"); - return ERROR_FLASH_BANK_INVALID; - } - - stm32x_info = malloc(sizeof(struct stm32x_flash_bank)); - bank->driver_priv = stm32x_info; - - stm32x_info->write_algorithm = NULL; - stm32x_info->probed = 0; - stm32x_info->has_dual_banks = false; - stm32x_info->register_offset = FLASH_OFFSET_B0; - - return ERROR_OK; -} - -static inline int stm32x_get_flash_reg(struct flash_bank *bank, uint32_t reg) -{ - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - return reg + stm32x_info->register_offset; -} - -static inline int stm32x_get_flash_status(struct flash_bank *bank, uint32_t *status) -{ - struct target *target = bank->target; - return target_read_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), status); -} - -static int stm32x_wait_status_busy(struct flash_bank *bank, int timeout) -{ - struct target *target = bank->target; - uint32_t status; - int retval = ERROR_OK; - - /* wait for busy to clear */ - for (;;) - { - retval = stm32x_get_flash_status(bank, &status); - if (retval != ERROR_OK) - return retval; - LOG_DEBUG("status: 0x%" PRIx32 "", status); - if ((status & FLASH_BSY) == 0) - break; - if (timeout-- <= 0) - { - LOG_ERROR("timed out waiting for flash"); - return ERROR_FAIL; - } - alive_sleep(1); - } - - if (status & FLASH_WRPRTERR) - { - LOG_ERROR("stm32x device protected"); - retval = ERROR_FAIL; - } - - if (status & FLASH_PGERR) - { - LOG_ERROR("stm32x device programming failed"); - retval = ERROR_FAIL; - } - - /* Clear but report errors */ - if (status & (FLASH_WRPRTERR | FLASH_PGERR)) - { - /* If this operation fails, we ignore it and report the original - * retval - */ - target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_SR), - FLASH_WRPRTERR | FLASH_PGERR); - } - return retval; -} - -int stm32x_check_operation_supported(struct flash_bank *bank) -{ - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - - /* if we have a dual flash bank device then - * we need to perform option byte stuff on bank0 only */ - if (stm32x_info->register_offset != FLASH_OFFSET_B0) - { - LOG_ERROR("Option Byte Operation's must use bank0"); - return ERROR_FLASH_OPERATION_FAILED; - } - - return ERROR_OK; -} - -static int stm32x_read_options(struct flash_bank *bank) -{ - uint32_t optiondata; - struct stm32x_flash_bank *stm32x_info = NULL; - struct target *target = bank->target; - - stm32x_info = bank->driver_priv; - - /* read current option bytes */ - int retval = target_read_u32(target, STM32_FLASH_OBR, &optiondata); - if (retval != ERROR_OK) - return retval; - - stm32x_info->option_bytes.user_options = (uint16_t)0xFFF8 | ((optiondata >> 2) & 0x07); - stm32x_info->option_bytes.RDP = (optiondata & (1 << OPT_READOUT)) ? 0xFFFF : 0x5AA5; - - if (optiondata & (1 << OPT_READOUT)) - LOG_INFO("Device Security Bit Set"); - - /* each bit refers to a 4bank protection */ - retval = target_read_u32(target, STM32_FLASH_WRPR, &optiondata); - if (retval != ERROR_OK) - return retval; - - stm32x_info->option_bytes.protection[0] = (uint16_t)optiondata; - stm32x_info->option_bytes.protection[1] = (uint16_t)(optiondata >> 8); - stm32x_info->option_bytes.protection[2] = (uint16_t)(optiondata >> 16); - stm32x_info->option_bytes.protection[3] = (uint16_t)(optiondata >> 24); - - return ERROR_OK; -} - -static int stm32x_erase_options(struct flash_bank *bank) -{ - struct stm32x_flash_bank *stm32x_info = NULL; - struct target *target = bank->target; - - stm32x_info = bank->driver_priv; - - /* read current options */ - stm32x_read_options(bank); - - /* unlock flash registers */ - int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1); - if (retval != ERROR_OK) - return retval; - - retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2); - if (retval != ERROR_OK) - return retval; - - /* unlock option flash registers */ - retval = target_write_u32(target, STM32_FLASH_OPTKEYR, KEY1); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, STM32_FLASH_OPTKEYR, KEY2); - if (retval != ERROR_OK) - return retval; - - /* erase option bytes */ - retval = target_write_u32(target, STM32_FLASH_CR, FLASH_OPTER | FLASH_OPTWRE); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, STM32_FLASH_CR, FLASH_OPTER | FLASH_STRT | FLASH_OPTWRE); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 10); - if (retval != ERROR_OK) - return retval; - - /* clear readout protection and complementary option bytes - * this will also force a device unlock if set */ - stm32x_info->option_bytes.RDP = 0x5AA5; - - return ERROR_OK; -} - -static int stm32x_write_options(struct flash_bank *bank) -{ - struct stm32x_flash_bank *stm32x_info = NULL; - struct target *target = bank->target; - - stm32x_info = bank->driver_priv; - - /* unlock flash registers */ - int retval = target_write_u32(target, STM32_FLASH_KEYR, KEY1); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, STM32_FLASH_KEYR, KEY2); - if (retval != ERROR_OK) - return retval; - - /* unlock option flash registers */ - retval = target_write_u32(target, STM32_FLASH_OPTKEYR, KEY1); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, STM32_FLASH_OPTKEYR, KEY2); - if (retval != ERROR_OK) - return retval; - - /* program option bytes */ - retval = target_write_u32(target, STM32_FLASH_CR, FLASH_OPTPG | FLASH_OPTWRE); - if (retval != ERROR_OK) - return retval; - - /* write user option byte */ - retval = target_write_u16(target, STM32_OB_USER, stm32x_info->option_bytes.user_options); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 10); - if (retval != ERROR_OK) - return retval; - - /* write protection byte 1 */ - retval = target_write_u16(target, STM32_OB_WRP0, stm32x_info->option_bytes.protection[0]); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 10); - if (retval != ERROR_OK) - return retval; - - /* write protection byte 2 */ - retval = target_write_u16(target, STM32_OB_WRP1, stm32x_info->option_bytes.protection[1]); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 10); - if (retval != ERROR_OK) - return retval; - - /* write protection byte 3 */ - retval = target_write_u16(target, STM32_OB_WRP2, stm32x_info->option_bytes.protection[2]); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 10); - if (retval != ERROR_OK) - return retval; - - /* write protection byte 4 */ - retval = target_write_u16(target, STM32_OB_WRP3, stm32x_info->option_bytes.protection[3]); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 10); - if (retval != ERROR_OK) - return retval; - - /* write readout protection bit */ - retval = target_write_u16(target, STM32_OB_RDP, stm32x_info->option_bytes.RDP); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 10); - if (retval != ERROR_OK) - return retval; - - retval = target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); - if (retval != ERROR_OK) - return retval; - - return ERROR_OK; -} - -static int stm32x_protect_check(struct flash_bank *bank) -{ - struct target *target = bank->target; - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - - uint32_t protection; - int i, s; - int num_bits; - int set; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - int retval = stm32x_check_operation_supported(bank); - if (ERROR_OK != retval) - return retval; - - /* medium density - each bit refers to a 4bank protection - * high density - each bit refers to a 2bank protection */ - retval = target_read_u32(target, STM32_FLASH_WRPR, &protection); - if (retval != ERROR_OK) - return retval; - - /* medium density - each protection bit is for 4 * 1K pages - * high density - each protection bit is for 2 * 2K pages */ - num_bits = (bank->num_sectors / stm32x_info->ppage_size); - - if (stm32x_info->ppage_size == 2) - { - /* high density flash/connectivity line protection */ - - set = 1; - - if (protection & (1 << 31)) - set = 0; - - /* bit 31 controls sector 62 - 255 protection for high density - * bit 31 controls sector 62 - 127 protection for connectivity line */ - for (s = 62; s < bank->num_sectors; s++) - { - bank->sectors[s].is_protected = set; - } - - if (bank->num_sectors > 61) - num_bits = 31; - - for (i = 0; i < num_bits; i++) - { - set = 1; - - if (protection & (1 << i)) - set = 0; - - for (s = 0; s < stm32x_info->ppage_size; s++) - bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set; - } - } - else - { - /* low/medium density flash protection */ - for (i = 0; i < num_bits; i++) - { - set = 1; - - if (protection & (1 << i)) - set = 0; - - for (s = 0; s < stm32x_info->ppage_size; s++) - bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set; - } - } - - return ERROR_OK; -} - -static int stm32x_erase(struct flash_bank *bank, int first, int last) -{ - struct target *target = bank->target; - int i; - - if (bank->target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if ((first == 0) && (last == (bank->num_sectors - 1))) - { - return stm32x_mass_erase(bank); - } - - /* unlock flash registers */ - int retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2); - if (retval != ERROR_OK) - return retval; - - for (i = first; i <= last; i++) - { - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PER); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_AR), - bank->base + bank->sectors[i].offset); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, - stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PER | FLASH_STRT); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 100); - if (retval != ERROR_OK) - return retval; - - bank->sectors[i].is_erased = 1; - } - - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK); - if (retval != ERROR_OK) - return retval; - - return ERROR_OK; -} - -static int stm32x_protect(struct flash_bank *bank, int set, int first, int last) -{ - struct stm32x_flash_bank *stm32x_info = NULL; - struct target *target = bank->target; - uint16_t prot_reg[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF}; - int i, reg, bit; - int status; - uint32_t protection; - - stm32x_info = bank->driver_priv; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - int retval = stm32x_check_operation_supported(bank); - if (ERROR_OK != retval) - return retval; - - if ((first % stm32x_info->ppage_size) != 0) - { - LOG_WARNING("aligned start protect sector to a %d sector boundary", - stm32x_info->ppage_size); - first = first - (first % stm32x_info->ppage_size); - } - if (((last + 1) % stm32x_info->ppage_size) != 0) - { - LOG_WARNING("aligned end protect sector to a %d sector boundary", - stm32x_info->ppage_size); - last++; - last = last - (last % stm32x_info->ppage_size); - last--; - } - - /* medium density - each bit refers to a 4bank protection - * high density - each bit refers to a 2bank protection */ - retval = target_read_u32(target, STM32_FLASH_WRPR, &protection); - if (retval != ERROR_OK) - return retval; - - prot_reg[0] = (uint16_t)protection; - prot_reg[1] = (uint16_t)(protection >> 8); - prot_reg[2] = (uint16_t)(protection >> 16); - prot_reg[3] = (uint16_t)(protection >> 24); - - if (stm32x_info->ppage_size == 2) - { - /* high density flash */ - - /* bit 7 controls sector 62 - 255 protection */ - if (last > 61) - { - if (set) - prot_reg[3] &= ~(1 << 7); - else - prot_reg[3] |= (1 << 7); - } - - if (first > 61) - first = 62; - if (last > 61) - last = 61; - - for (i = first; i <= last; i++) - { - reg = (i / stm32x_info->ppage_size) / 8; - bit = (i / stm32x_info->ppage_size) - (reg * 8); - - if (set) - prot_reg[reg] &= ~(1 << bit); - else - prot_reg[reg] |= (1 << bit); - } - } - else - { - /* medium density flash */ - for (i = first; i <= last; i++) - { - reg = (i / stm32x_info->ppage_size) / 8; - bit = (i / stm32x_info->ppage_size) - (reg * 8); - - if (set) - prot_reg[reg] &= ~(1 << bit); - else - prot_reg[reg] |= (1 << bit); - } - } - - if ((status = stm32x_erase_options(bank)) != ERROR_OK) - return status; - - stm32x_info->option_bytes.protection[0] = prot_reg[0]; - stm32x_info->option_bytes.protection[1] = prot_reg[1]; - stm32x_info->option_bytes.protection[2] = prot_reg[2]; - stm32x_info->option_bytes.protection[3] = prot_reg[3]; - - return stm32x_write_options(bank); -} - -static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer, - uint32_t offset, uint32_t count) -{ - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - struct target *target = bank->target; - uint32_t buffer_size = 16384; - struct working_area *source; - uint32_t address = bank->base + offset; - struct reg_param reg_params[4]; - struct armv7m_algorithm armv7m_info; - int retval = ERROR_OK; - - /* see contib/loaders/flash/stm32x.s for src */ - - static const uint8_t stm32x_flash_write_code[] = { - /* #define STM32_FLASH_CR_OFFSET 0x10 */ - /* #define STM32_FLASH_SR_OFFSET 0x0C */ - /* write: */ - 0x08, 0x4c, /* ldr r4, STM32_FLASH_BASE */ - 0x1c, 0x44, /* add r4, r3 */ - /* write_half_word: */ - 0x01, 0x23, /* movs r3, #0x01 */ - 0x23, 0x61, /* str r3, [r4, #STM32_FLASH_CR_OFFSET] */ - 0x30, 0xf8, 0x02, 0x3b, /* ldrh r3, [r0], #0x02 */ - 0x21, 0xf8, 0x02, 0x3b, /* strh r3, [r1], #0x02 */ - /* busy: */ - 0xe3, 0x68, /* ldr r3, [r4, #STM32_FLASH_SR_OFFSET] */ - 0x13, 0xf0, 0x01, 0x0f, /* tst r3, #0x01 */ - 0xfb, 0xd0, /* beq busy */ - 0x13, 0xf0, 0x14, 0x0f, /* tst r3, #0x14 */ - 0x01, 0xd1, /* bne exit */ - 0x01, 0x3a, /* subs r2, r2, #0x01 */ - 0xf0, 0xd1, /* bne write_half_word */ - /* exit: */ - 0x00, 0xbe, /* bkpt #0x00 */ - 0x00, 0x20, 0x02, 0x40, /* STM32_FLASH_BASE: .word 0x40022000 */ - }; - - /* flash write code */ - if (target_alloc_working_area(target, sizeof(stm32x_flash_write_code), - &stm32x_info->write_algorithm) != ERROR_OK) - { - LOG_WARNING("no working area available, can't do block memory writes"); - return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; - }; - - if ((retval = target_write_buffer(target, stm32x_info->write_algorithm->address, - sizeof(stm32x_flash_write_code), - (uint8_t*)stm32x_flash_write_code)) != ERROR_OK) - return retval; - - /* memory buffer */ - while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) - { - buffer_size /= 2; - if (buffer_size <= 256) - { - /* if we already allocated the writing code, but failed to get a - * buffer, free the algorithm */ - if (stm32x_info->write_algorithm) - target_free_working_area(target, stm32x_info->write_algorithm); - - LOG_WARNING("no large enough working area available, can't do block memory writes"); - return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; - } - }; - - armv7m_info.common_magic = ARMV7M_COMMON_MAGIC; - armv7m_info.core_mode = ARMV7M_MODE_ANY; - - init_reg_param(®_params[0], "r0", 32, PARAM_OUT); - init_reg_param(®_params[1], "r1", 32, PARAM_OUT); - init_reg_param(®_params[2], "r2", 32, PARAM_OUT); - init_reg_param(®_params[3], "r3", 32, PARAM_IN_OUT); - - while (count > 0) - { - uint32_t thisrun_count = (count > (buffer_size / 2)) ? - (buffer_size / 2) : count; - - if ((retval = target_write_buffer(target, source->address, - thisrun_count * 2, buffer)) != ERROR_OK) - break; - - buf_set_u32(reg_params[0].value, 0, 32, source->address); - buf_set_u32(reg_params[1].value, 0, 32, address); - buf_set_u32(reg_params[2].value, 0, 32, thisrun_count); - buf_set_u32(reg_params[3].value, 0, 32, stm32x_info->register_offset); - - if ((retval = target_run_algorithm(target, 0, NULL, 4, reg_params, - stm32x_info->write_algorithm->address, - 0, - 10000, &armv7m_info)) != ERROR_OK) - { - LOG_ERROR("error executing stm32x flash write algorithm"); - break; - } - - if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_PGERR) - { - LOG_ERROR("flash memory not erased before writing"); - /* Clear but report errors */ - target_write_u32(target, STM32_FLASH_SR, FLASH_PGERR); - retval = ERROR_FAIL; - break; - } - - if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_WRPRTERR) - { - LOG_ERROR("flash memory write protected"); - /* Clear but report errors */ - target_write_u32(target, STM32_FLASH_SR, FLASH_WRPRTERR); - retval = ERROR_FAIL; - break; - } - - buffer += thisrun_count * 2; - address += thisrun_count * 2; - count -= thisrun_count; - } - - target_free_working_area(target, source); - target_free_working_area(target, stm32x_info->write_algorithm); - - destroy_reg_param(®_params[0]); - destroy_reg_param(®_params[1]); - destroy_reg_param(®_params[2]); - destroy_reg_param(®_params[3]); - - return retval; -} - -static int stm32x_write(struct flash_bank *bank, uint8_t *buffer, - uint32_t offset, uint32_t count) -{ - struct target *target = bank->target; - uint32_t words_remaining = (count / 2); - uint32_t bytes_remaining = (count & 0x00000001); - uint32_t address = bank->base + offset; - uint32_t bytes_written = 0; - int retval; - - if (bank->target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if (offset & 0x1) - { - LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset); - return ERROR_FLASH_DST_BREAKS_ALIGNMENT; - } - - /* unlock flash registers */ - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2); - if (retval != ERROR_OK) - return retval; - - /* multiple half words (2-byte) to be programmed? */ - if (words_remaining > 0) - { - /* try using a block write */ - if ((retval = stm32x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK) - { - if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) - { - /* if block write failed (no sufficient working area), - * we use normal (slow) single dword accesses */ - LOG_WARNING("couldn't use block writes, falling back to single memory accesses"); - } - } - else - { - buffer += words_remaining * 2; - address += words_remaining * 2; - words_remaining = 0; - } - } - - if ((retval != ERROR_OK) && (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE)) - return retval; - - while (words_remaining > 0) - { - uint16_t value; - memcpy(&value, buffer + bytes_written, sizeof(uint16_t)); - - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG); - if (retval != ERROR_OK) - return retval; - retval = target_write_u16(target, address, value); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 5); - if (retval != ERROR_OK) - return retval; - - bytes_written += 2; - words_remaining--; - address += 2; - } - - if (bytes_remaining) - { - uint16_t value = 0xffff; - memcpy(&value, buffer + bytes_written, bytes_remaining); - - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG); - if (retval != ERROR_OK) - return retval; - retval = target_write_u16(target, address, value); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 5); - if (retval != ERROR_OK) - return retval; - } - - return target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); -} - -static int stm32x_probe(struct flash_bank *bank) -{ - struct target *target = bank->target; - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - int i; - uint16_t num_pages; - uint32_t device_id; - int page_size; - uint32_t base_address = 0x08000000; - - stm32x_info->probed = 0; - stm32x_info->register_offset = FLASH_OFFSET_B0; - - /* read stm32 device id register */ - int retval = target_read_u32(target, 0xE0042000, &device_id); - if (retval != ERROR_OK) - return retval; - LOG_INFO("device id = 0x%08" PRIx32 "", device_id); - - /* get flash size from target. */ - retval = target_read_u16(target, 0x1FFFF7E0, &num_pages); - if (retval != ERROR_OK) - { - LOG_WARNING("failed reading flash size, default to max target family"); - /* failed reading flash size, default to max target family */ - num_pages = 0xffff; - } - - if ((device_id & 0x7ff) == 0x410) - { - /* medium density - we have 1k pages - * 4 pages for a protection area */ - page_size = 1024; - stm32x_info->ppage_size = 4; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors incorrect on revA */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash"); - num_pages = 128; - } - } - else if ((device_id & 0x7ff) == 0x412) - { - /* low density - we have 1k pages - * 4 pages for a protection area */ - page_size = 1024; - stm32x_info->ppage_size = 4; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors incorrect on revA */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 32k flash"); - num_pages = 32; - } - } - else if ((device_id & 0x7ff) == 0x414) - { - /* high density - we have 2k pages - * 2 pages for a protection area */ - page_size = 2048; - stm32x_info->ppage_size = 2; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors incorrect on revZ */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 512k flash"); - num_pages = 512; - } - } - else if ((device_id & 0x7ff) == 0x418) - { - /* connectivity line density - we have 2k pages - * 2 pages for a protection area */ - page_size = 2048; - stm32x_info->ppage_size = 2; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors incorrect on revZ */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 256k flash"); - num_pages = 256; - } - } - else if ((device_id & 0x7ff) == 0x420) - { - /* value line density - we have 1k pages - * 4 pages for a protection area */ - page_size = 1024; - stm32x_info->ppage_size = 4; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors may be incorrrect on early silicon */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash"); - num_pages = 128; - } - } - else if ((device_id & 0x7ff) == 0x430) - { - /* xl line density - we have 2k pages - * 2 pages for a protection area */ - page_size = 2048; - stm32x_info->ppage_size = 2; - stm32x_info->has_dual_banks = true; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors may be incorrrect on early silicon */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 1024k flash"); - num_pages = 1024; - } - - /* split reported size into matching bank */ - if (bank->base != 0x08080000) - { - /* bank 0 will be fixed 512k */ - num_pages = 512; - } - else - { - num_pages -= 512; - /* bank1 also uses a register offset */ - stm32x_info->register_offset = FLASH_OFFSET_B1; - base_address = 0x08080000; - } - } - else - { - LOG_WARNING("Cannot identify target as a STM32 family."); - return ERROR_FAIL; - } - - LOG_INFO("flash size = %dkbytes", num_pages); - - /* calculate numbers of pages */ - num_pages /= (page_size / 1024); - - if (bank->sectors) - { - free(bank->sectors); - bank->sectors = NULL; - } - - bank->base = base_address; - bank->size = (num_pages * page_size); - bank->num_sectors = num_pages; - bank->sectors = malloc(sizeof(struct flash_sector) * num_pages); - - for (i = 0; i < num_pages; i++) - { - bank->sectors[i].offset = i * page_size; - bank->sectors[i].size = page_size; - bank->sectors[i].is_erased = -1; - bank->sectors[i].is_protected = 1; - } - - stm32x_info->probed = 1; - - return ERROR_OK; -} - -static int stm32x_auto_probe(struct flash_bank *bank) -{ - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - if (stm32x_info->probed) - return ERROR_OK; - return stm32x_probe(bank); -} - -#if 0 -COMMAND_HANDLER(stm32x_handle_part_id_command) -{ - return ERROR_OK; -} -#endif - -static int get_stm32x_info(struct flash_bank *bank, char *buf, int buf_size) -{ - struct target *target = bank->target; - uint32_t device_id; - int printed; - - /* read stm32 device id register */ - int retval = target_read_u32(target, 0xE0042000, &device_id); - if (retval != ERROR_OK) - return retval; - - if ((device_id & 0x7ff) == 0x410) - { - printed = snprintf(buf, buf_size, "stm32x (Medium Density) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x0000: - snprintf(buf, buf_size, "A"); - break; - - case 0x2000: - snprintf(buf, buf_size, "B"); - break; - - case 0x2001: - snprintf(buf, buf_size, "Z"); - break; - - case 0x2003: - snprintf(buf, buf_size, "Y"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else if ((device_id & 0x7ff) == 0x412) - { - printed = snprintf(buf, buf_size, "stm32x (Low Density) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else if ((device_id & 0x7ff) == 0x414) - { - printed = snprintf(buf, buf_size, "stm32x (High Density) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - case 0x1001: - snprintf(buf, buf_size, "Z"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else if ((device_id & 0x7ff) == 0x418) - { - printed = snprintf(buf, buf_size, "stm32x (Connectivity) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - case 0x1001: - snprintf(buf, buf_size, "Z"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else if ((device_id & 0x7ff) == 0x420) - { - printed = snprintf(buf, buf_size, "stm32x (Value) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - case 0x1001: - snprintf(buf, buf_size, "Z"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else if ((device_id & 0x7ff) == 0x430) - { - printed = snprintf(buf, buf_size, "stm32x (XL) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else - { - snprintf(buf, buf_size, "Cannot identify target as a stm32x\n"); - return ERROR_FAIL; - } - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_lock_command) -{ - struct target *target = NULL; - struct stm32x_flash_bank *stm32x_info = NULL; - - if (CMD_ARGC < 1) - { - command_print(CMD_CTX, "stm32x lock "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - stm32x_info = bank->driver_priv; - - target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - retval = stm32x_check_operation_supported(bank); - if (ERROR_OK != retval) - return retval; - - if (stm32x_erase_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to erase options"); - return ERROR_OK; - } - - /* set readout protection */ - stm32x_info->option_bytes.RDP = 0; - - if (stm32x_write_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to lock device"); - return ERROR_OK; - } - - command_print(CMD_CTX, "stm32x locked"); - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_unlock_command) -{ - struct target *target = NULL; - - if (CMD_ARGC < 1) - { - command_print(CMD_CTX, "stm32x unlock "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - retval = stm32x_check_operation_supported(bank); - if (ERROR_OK != retval) - return retval; - - if (stm32x_erase_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to unlock device"); - return ERROR_OK; - } - - if (stm32x_write_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to lock device"); - return ERROR_OK; - } - - command_print(CMD_CTX, "stm32x unlocked.\n" - "INFO: a reset or power cycle is required " - "for the new settings to take effect."); - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_options_read_command) -{ - uint32_t optionbyte; - struct target *target = NULL; - struct stm32x_flash_bank *stm32x_info = NULL; - - if (CMD_ARGC < 1) - { - command_print(CMD_CTX, "stm32x options_read "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - stm32x_info = bank->driver_priv; - - target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - retval = stm32x_check_operation_supported(bank); - if (ERROR_OK != retval) - return retval; - - retval = target_read_u32(target, STM32_FLASH_OBR, &optionbyte); - if (retval != ERROR_OK) - return retval; - command_print(CMD_CTX, "Option Byte: 0x%" PRIx32 "", optionbyte); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_ERROR, 1)) - command_print(CMD_CTX, "Option Byte Complement Error"); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_READOUT, 1)) - command_print(CMD_CTX, "Readout Protection On"); - else - command_print(CMD_CTX, "Readout Protection Off"); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDWDGSW, 1)) - command_print(CMD_CTX, "Software Watchdog"); - else - command_print(CMD_CTX, "Hardware Watchdog"); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDRSTSTOP, 1)) - command_print(CMD_CTX, "Stop: No reset generated"); - else - command_print(CMD_CTX, "Stop: Reset generated"); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDRSTSTDBY, 1)) - command_print(CMD_CTX, "Standby: No reset generated"); - else - command_print(CMD_CTX, "Standby: Reset generated"); - - if (stm32x_info->has_dual_banks) - { - if (buf_get_u32((uint8_t*)&optionbyte, OPT_BFB2, 1)) - command_print(CMD_CTX, "Boot: Bank 0"); - else - command_print(CMD_CTX, "Boot: Bank 1"); - } - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_options_write_command) -{ - struct target *target = NULL; - struct stm32x_flash_bank *stm32x_info = NULL; - uint16_t optionbyte = 0xF8; - - if (CMD_ARGC < 4) - { - command_print(CMD_CTX, "stm32x options_write " - " "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - stm32x_info = bank->driver_priv; - - target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - retval = stm32x_check_operation_supported(bank); - if (ERROR_OK != retval) - return retval; - - /* REVISIT: ignores some options which we will display... - * and doesn't insist on the specified syntax. - */ - - /* OPT_RDWDGSW */ - if (strcmp(CMD_ARGV[1], "SWWDG") == 0) - { - optionbyte |= (1 << 0); - } - else /* REVISIT must be "HWWDG" then ... */ - { - optionbyte &= ~(1 << 0); - } - - /* OPT_RDRSTSTOP */ - if (strcmp(CMD_ARGV[2], "NORSTSTOP") == 0) - { - optionbyte |= (1 << 1); - } - else /* REVISIT must be "RSTSTNDBY" then ... */ - { - optionbyte &= ~(1 << 1); - } - - /* OPT_RDRSTSTDBY */ - if (strcmp(CMD_ARGV[3], "NORSTSTNDBY") == 0) - { - optionbyte |= (1 << 2); - } - else /* REVISIT must be "RSTSTOP" then ... */ - { - optionbyte &= ~(1 << 2); - } - - if (CMD_ARGC > 4 && stm32x_info->has_dual_banks) - { - /* OPT_BFB2 */ - if (strcmp(CMD_ARGV[4], "BOOT0") == 0) - { - optionbyte |= (1 << 3); - } - else - { - optionbyte &= ~(1 << 3); - } - } - - if (stm32x_erase_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to erase options"); - return ERROR_OK; - } - - stm32x_info->option_bytes.user_options = optionbyte; - - if (stm32x_write_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to write options"); - return ERROR_OK; - } - - command_print(CMD_CTX, "stm32x write options complete.\n" - "INFO: a reset or power cycle is required " - "for the new settings to take effect."); - - return ERROR_OK; -} - -static int stm32x_mass_erase(struct flash_bank *bank) -{ - struct target *target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - /* unlock option flash registers */ - int retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2); - if (retval != ERROR_OK) - return retval; - - /* mass erase flash memory */ - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_MER); - if (retval != ERROR_OK) - return retval; - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_MER | FLASH_STRT); - if (retval != ERROR_OK) - return retval; - - retval = stm32x_wait_status_busy(bank, 100); - if (retval != ERROR_OK) - return retval; - - retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK); - if (retval != ERROR_OK) - return retval; - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_mass_erase_command) -{ - int i; - - if (CMD_ARGC < 1) - { - command_print(CMD_CTX, "stm32x mass_erase "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - retval = stm32x_mass_erase(bank); - if (retval == ERROR_OK) - { - /* set all sectors as erased */ - for (i = 0; i < bank->num_sectors; i++) - { - bank->sectors[i].is_erased = 1; - } - - command_print(CMD_CTX, "stm32x mass erase complete"); - } - else - { - command_print(CMD_CTX, "stm32x mass erase failed"); - } - - return retval; -} - -static const struct command_registration stm32x_exec_command_handlers[] = { - { - .name = "lock", - .handler = stm32x_handle_lock_command, - .mode = COMMAND_EXEC, - .usage = "bank_id", - .help = "Lock entire flash device.", - }, - { - .name = "unlock", - .handler = stm32x_handle_unlock_command, - .mode = COMMAND_EXEC, - .usage = "bank_id", - .help = "Unlock entire protected flash device.", - }, - { - .name = "mass_erase", - .handler = stm32x_handle_mass_erase_command, - .mode = COMMAND_EXEC, - .usage = "bank_id", - .help = "Erase entire flash device.", - }, - { - .name = "options_read", - .handler = stm32x_handle_options_read_command, - .mode = COMMAND_EXEC, - .usage = "bank_id", - .help = "Read and display device option byte.", - }, - { - .name = "options_write", - .handler = stm32x_handle_options_write_command, - .mode = COMMAND_EXEC, - .usage = "bank_id ('SWWDG'|'HWWDG') " - "('RSTSTNDBY'|'NORSTSTNDBY') " - "('RSTSTOP'|'NORSTSTOP')", - .help = "Replace bits in device option byte.", - }, - COMMAND_REGISTRATION_DONE -}; - -static const struct command_registration stm32x_command_handlers[] = { - { - .name = "stm32x", - .mode = COMMAND_ANY, - .help = "stm32x flash command group", - .chain = stm32x_exec_command_handlers, - }, - COMMAND_REGISTRATION_DONE -}; - -struct flash_driver stm32x_flash = { - .name = "stm32x", - .commands = stm32x_command_handlers, - .flash_bank_command = stm32x_flash_bank_command, - .erase = stm32x_erase, - .protect = stm32x_protect, - .write = stm32x_write, - .read = default_flash_read, - .probe = stm32x_probe, - .auto_probe = stm32x_auto_probe, - .erase_check = default_flash_mem_blank_check, - .protect_check = stm32x_protect_check, - .info = get_stm32x_info, -};