--- /dev/null
+/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2011 by Andreas Fritiofson *
+ * andreas.fritiofson@gmail.com *
+ * *
+ * Copyright (C) 2013 by Roman Dmitrienko *
+ * me@iamroman.org *
+ *
+ * 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 <helper/binarybuffer.h>
+#include <target/algorithm.h>
+#include <target/armv7m.h>
+#include <target/cortex_m.h>
+
+/* keep family IDs in decimal */
+#define EFM_FAMILY_ID_GECKO 71
+#define EFM_FAMILY_ID_GIANT_GECKO 72
+#define EFM_FAMILY_ID_TINY_GECKO 73
+#define EFM_FAMILY_ID_LEOPARD_GECKO 74
+
+#define EFM32_FLASH_ERASE_TMO 100
+#define EFM32_FLASH_WDATAREADY_TMO 100
+#define EFM32_FLASH_WRITE_TMO 100
+
+/* size in bytes, not words; must fit all Gecko devices */
+#define LOCKBITS_PAGE_SZ 512
+
+#define EFM32_MSC_INFO_BASE 0x0fe00000
+
+#define EFM32_MSC_USER_DATA EFM32_MSC_INFO_BASE
+#define EFM32_MSC_LOCK_BITS (EFM32_MSC_INFO_BASE+0x4000)
+#define EFM32_MSC_DEV_INFO (EFM32_MSC_INFO_BASE+0x8000)
+
+/* PAGE_SIZE is only present in Leopard and Giant Gecko MCUs */
+#define EFM32_MSC_DI_PAGE_SIZE (EFM32_MSC_DEV_INFO+0x1e7)
+#define EFM32_MSC_DI_FLASH_SZ (EFM32_MSC_DEV_INFO+0x1f8)
+#define EFM32_MSC_DI_RAM_SZ (EFM32_MSC_DEV_INFO+0x1fa)
+#define EFM32_MSC_DI_PART_NUM (EFM32_MSC_DEV_INFO+0x1fc)
+#define EFM32_MSC_DI_PART_FAMILY (EFM32_MSC_DEV_INFO+0x1fe)
+#define EFM32_MSC_DI_PROD_REV (EFM32_MSC_DEV_INFO+0x1ff)
+
+#define EFM32_MSC_REGBASE 0x400c0000
+#define EFM32_MSC_WRITECTRL (EFM32_MSC_REGBASE+0x008)
+#define EFM32_MSC_WRITECTRL_WREN_MASK 0x1
+#define EFM32_MSC_WRITECMD (EFM32_MSC_REGBASE+0x00c)
+#define EFM32_MSC_WRITECMD_LADDRIM_MASK 0x1
+#define EFM32_MSC_WRITECMD_ERASEPAGE_MASK 0x2
+#define EFM32_MSC_WRITECMD_WRITEONCE_MASK 0x8
+#define EFM32_MSC_ADDRB (EFM32_MSC_REGBASE+0x010)
+#define EFM32_MSC_WDATA (EFM32_MSC_REGBASE+0x018)
+#define EFM32_MSC_STATUS (EFM32_MSC_REGBASE+0x01c)
+#define EFM32_MSC_STATUS_BUSY_MASK 0x1
+#define EFM32_MSC_STATUS_LOCKED_MASK 0x2
+#define EFM32_MSC_STATUS_INVADDR_MASK 0x4
+#define EFM32_MSC_STATUS_WDATAREADY_MASK 0x8
+#define EFM32_MSC_STATUS_WORDTIMEOUT_MASK 0x10
+#define EFM32_MSC_STATUS_ERASEABORTED_MASK 0x20
+#define EFM32_MSC_LOCK (EFM32_MSC_REGBASE+0x03c)
+#define EFM32_MSC_LOCK_LOCKKEY 0x1b71
+
+struct efm32x_flash_bank {
+ int probed;
+ uint8_t lb_page[LOCKBITS_PAGE_SZ];
+};
+
+struct efm32_info {
+ uint16_t flash_sz_kib;
+ uint16_t ram_sz_kib;
+ uint16_t part_num;
+ uint8_t part_family;
+ uint8_t prod_rev;
+ uint16_t page_size;
+};
+
+static int efm32x_write(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count);
+
+static int efm32x_get_flash_size(struct flash_bank *bank, uint16_t *flash_sz)
+{
+ return target_read_u16(bank->target, EFM32_MSC_DI_FLASH_SZ, flash_sz);
+}
+
+static int efm32x_get_ram_size(struct flash_bank *bank, uint16_t *ram_sz)
+{
+ return target_read_u16(bank->target, EFM32_MSC_DI_RAM_SZ, ram_sz);
+}
+
+static int efm32x_get_part_num(struct flash_bank *bank, uint16_t *pnum)
+{
+ return target_read_u16(bank->target, EFM32_MSC_DI_PART_NUM, pnum);
+}
+
+static int efm32x_get_part_family(struct flash_bank *bank, uint8_t *pfamily)
+{
+ return target_read_u8(bank->target, EFM32_MSC_DI_PART_FAMILY, pfamily);
+}
+
+static int efm32x_get_prod_rev(struct flash_bank *bank, uint8_t *prev)
+{
+ return target_read_u8(bank->target, EFM32_MSC_DI_PROD_REV, prev);
+}
+
+static int efm32x_read_info(struct flash_bank *bank,
+ struct efm32_info *efm32_info)
+{
+ int ret;
+ uint32_t cpuid = 0;
+
+ memset(efm32_info, 0, sizeof(struct efm32_info));
+
+ ret = target_read_u32(bank->target, CPUID, &cpuid);
+ if (ERROR_OK != ret)
+ return ret;
+
+ if (((cpuid >> 4) & 0xfff) == 0xc23) {
+ /* Cortex M3 device */
+ } else {
+ LOG_ERROR("Target is not CortexM3");
+ return ERROR_FAIL;
+ }
+
+ ret = efm32x_get_flash_size(bank, &(efm32_info->flash_sz_kib));
+ if (ERROR_OK != ret)
+ return ret;
+
+ ret = efm32x_get_ram_size(bank, &(efm32_info->ram_sz_kib));
+ if (ERROR_OK != ret)
+ return ret;
+
+ ret = efm32x_get_part_num(bank, &(efm32_info->part_num));
+ if (ERROR_OK != ret)
+ return ret;
+
+ ret = efm32x_get_part_family(bank, &(efm32_info->part_family));
+ if (ERROR_OK != ret)
+ return ret;
+
+ ret = efm32x_get_prod_rev(bank, &(efm32_info->prod_rev));
+ if (ERROR_OK != ret)
+ return ret;
+
+ if (EFM_FAMILY_ID_GECKO == efm32_info->part_family ||
+ EFM_FAMILY_ID_TINY_GECKO == efm32_info->part_family)
+ efm32_info->page_size = 512;
+ else if (EFM_FAMILY_ID_GIANT_GECKO == efm32_info->part_family ||
+ EFM_FAMILY_ID_LEOPARD_GECKO == efm32_info->part_family) {
+ uint8_t pg_size = 0;
+
+ ret = target_read_u8(bank->target, EFM32_MSC_DI_PAGE_SIZE,
+ &pg_size);
+ if (ERROR_OK != ret)
+ return ret;
+
+ efm32_info->page_size = (1 << ((pg_size+10) & 0xff));
+
+ if ((2048 != efm32_info->page_size) &&
+ (4096 != efm32_info->page_size)) {
+ LOG_ERROR("Invalid page size %u", efm32_info->page_size);
+ return ERROR_FAIL;
+ }
+ } else {
+ LOG_ERROR("Unknown MCU family %d", efm32_info->part_family);
+ return ERROR_FAIL;
+ }
+
+ return ERROR_OK;
+}
+
+/* flash bank efm32 <base> <size> 0 0 <target#>
+ */
+FLASH_BANK_COMMAND_HANDLER(efm32x_flash_bank_command)
+{
+ struct efm32x_flash_bank *efm32x_info;
+
+ if (CMD_ARGC < 6)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ efm32x_info = malloc(sizeof(struct efm32x_flash_bank));
+
+ bank->driver_priv = efm32x_info;
+ efm32x_info->probed = 0;
+ memset(efm32x_info->lb_page, 0xff, LOCKBITS_PAGE_SZ);
+
+ return ERROR_OK;
+}
+
+/* set or reset given bits in a register */
+static int efm32x_set_reg_bits(struct flash_bank *bank, uint32_t reg,
+ uint32_t bitmask, int set)
+{
+ int ret = 0;
+ uint32_t reg_val = 0;
+
+ ret = target_read_u32(bank->target, reg, ®_val);
+ if (ERROR_OK != ret)
+ return ret;
+
+ if (set)
+ reg_val |= bitmask;
+ else
+ reg_val &= ~bitmask;
+
+ return target_write_u32(bank->target, reg, reg_val);
+}
+
+static int efm32x_set_wren(struct flash_bank *bank, int write_enable)
+{
+ return efm32x_set_reg_bits(bank, EFM32_MSC_WRITECTRL,
+ EFM32_MSC_WRITECTRL_WREN_MASK, write_enable);
+}
+
+static int efm32x_msc_lock(struct flash_bank *bank, int lock)
+{
+ return target_write_u32(bank->target, EFM32_MSC_LOCK,
+ (lock ? 0 : EFM32_MSC_LOCK_LOCKKEY));
+}
+
+static int efm32x_wait_status(struct flash_bank *bank, int timeout,
+ uint32_t wait_mask, int wait_for_set)
+{
+ int ret = 0;
+ uint32_t status = 0;
+
+ while (1) {
+ ret = target_read_u32(bank->target, EFM32_MSC_STATUS, &status);
+ if (ERROR_OK != ret)
+ break;
+
+ LOG_DEBUG("status: 0x%" PRIx32 "", status);
+
+ if (((status & wait_mask) == 0) && (0 == wait_for_set))
+ break;
+ else if (((status & wait_mask) != 0) && wait_for_set)
+ break;
+
+ if (timeout-- <= 0) {
+ LOG_ERROR("timed out waiting for MSC status");
+ return ERROR_FAIL;
+ }
+
+ alive_sleep(1);
+ }
+
+ if (status & EFM32_MSC_STATUS_ERASEABORTED_MASK)
+ LOG_WARNING("page erase was aborted");
+
+ return ret;
+}
+
+static int efm32x_erase_page(struct flash_bank *bank, uint32_t addr)
+{
+ /* this function DOES NOT set WREN; must be set already */
+ /* 1. write address to ADDRB
+ 2. write LADDRIM
+ 3. check status (INVADDR, LOCKED)
+ 4. write ERASEPAGE
+ 5. wait until !STATUS_BUSY
+ */
+ int ret = 0;
+ uint32_t status = 0;
+
+ LOG_DEBUG("erasing flash page at 0x%08x", addr);
+
+ ret = target_write_u32(bank->target, EFM32_MSC_ADDRB, addr);
+ if (ERROR_OK != ret)
+ return ret;
+
+ ret = efm32x_set_reg_bits(bank, EFM32_MSC_WRITECMD,
+ EFM32_MSC_WRITECMD_LADDRIM_MASK, 1);
+ if (ERROR_OK != ret)
+ return ret;
+
+ ret = target_read_u32(bank->target, EFM32_MSC_STATUS, &status);
+ if (ERROR_OK != ret)
+ return ret;
+
+ LOG_DEBUG("status 0x%x", status);
+
+ if (status & EFM32_MSC_STATUS_LOCKED_MASK) {
+ LOG_ERROR("Page is locked");
+ return ERROR_FAIL;
+ } else if (status & EFM32_MSC_STATUS_INVADDR_MASK) {
+ LOG_ERROR("Invalid address 0x%x", addr);
+ return ERROR_FAIL;
+ }
+
+ ret = efm32x_set_reg_bits(bank, EFM32_MSC_WRITECMD,
+ EFM32_MSC_WRITECMD_ERASEPAGE_MASK, 1);
+ if (ERROR_OK != ret)
+ return ret;
+
+ return efm32x_wait_status(bank, EFM32_FLASH_ERASE_TMO,
+ EFM32_MSC_STATUS_BUSY_MASK, 0);
+}
+
+static int efm32x_erase(struct flash_bank *bank, int first, int last)
+{
+ struct target *target = bank->target;
+ int i = 0;
+ int ret = 0;
+
+ if (TARGET_HALTED != target->state) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ efm32x_msc_lock(bank, 0);
+ ret = efm32x_set_wren(bank, 1);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to enable MSC write");
+ return ret;
+ }
+
+ for (i = first; i <= last; i++) {
+ ret = efm32x_erase_page(bank, bank->sectors[i].offset);
+ if (ERROR_OK != ret)
+ LOG_ERROR("Failed to erase page %d", i);
+ }
+
+ ret = efm32x_set_wren(bank, 0);
+ efm32x_msc_lock(bank, 1);
+
+ return ret;
+}
+
+static int efm32x_read_lock_data(struct flash_bank *bank)
+{
+ struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
+ struct target *target = bank->target;
+ int i = 0;
+ int data_size = 0;
+ uint32_t *ptr = NULL;
+ int ret = 0;
+
+ assert(!(bank->num_sectors & 0x1f));
+
+ data_size = bank->num_sectors / 8; /* number of data bytes */
+ data_size /= 4; /* ...and data dwords */
+
+ ptr = (uint32_t *)efm32x_info->lb_page;
+
+ for (i = 0; i < data_size; i++, ptr++) {
+ ret = target_read_u32(target, EFM32_MSC_LOCK_BITS+i*4, ptr);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to read PLW %d", i);
+ return ret;
+ }
+ }
+
+ /* also, read ULW, DLW and MLW */
+
+ /* ULW, word 126 */
+ ptr = ((uint32_t *)efm32x_info->lb_page) + 126;
+ ret = target_read_u32(target, EFM32_MSC_LOCK_BITS+126*4, ptr);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to read ULW");
+ return ret;
+ }
+
+ /* DLW, word 127 */
+ ptr = ((uint32_t *)efm32x_info->lb_page) + 127;
+ ret = target_read_u32(target, EFM32_MSC_LOCK_BITS+127*4, ptr);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to read DLW");
+ return ret;
+ }
+
+ /* MLW, word 125, present in GG and LG */
+ ptr = ((uint32_t *)efm32x_info->lb_page) + 125;
+ ret = target_read_u32(target, EFM32_MSC_LOCK_BITS+125*4, ptr);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to read MLW");
+ return ret;
+ }
+
+ return ERROR_OK;
+}
+
+static int efm32x_write_lock_data(struct flash_bank *bank)
+{
+ struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
+ int ret = 0;
+
+ ret = efm32x_erase_page(bank, EFM32_MSC_LOCK_BITS);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to erase LB page");
+ return ret;
+ }
+
+ return efm32x_write(bank, efm32x_info->lb_page, EFM32_MSC_LOCK_BITS,
+ LOCKBITS_PAGE_SZ);
+}
+
+static int efm32x_get_page_lock(struct flash_bank *bank, size_t page)
+{
+ struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
+ uint32_t dw = ((uint32_t *)efm32x_info->lb_page)[page >> 5];
+ uint32_t mask = 0;
+
+ mask = 1 << (page & 0x1f);
+
+ return (dw & mask) ? 0 : 1;
+}
+
+static int efm32x_set_page_lock(struct flash_bank *bank, size_t page, int set)
+{
+ struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
+ uint32_t *dw = &((uint32_t *)efm32x_info->lb_page)[page >> 5];
+ uint32_t mask = 0;
+
+ mask = 1 << (page & 0x1f);
+
+ if (!set)
+ *dw |= mask;
+ else
+ *dw &= ~mask;
+
+ return ERROR_OK;
+}
+
+static int efm32x_protect(struct flash_bank *bank, int set, int first, int last)
+{
+ struct target *target = bank->target;
+ int i = 0;
+ int ret = 0;
+
+ if (!set) {
+ LOG_ERROR("Erase device data to reset page locks");
+ return ERROR_FAIL;
+ }
+
+ if (target->state != TARGET_HALTED) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ for (i = first; i <= last; i++) {
+ ret = efm32x_set_page_lock(bank, i, set);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to set lock on page %d", i);
+ return ret;
+ }
+ }
+
+ ret = efm32x_write_lock_data(bank);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to write LB page");
+ return ret;
+ }
+
+ return ERROR_OK;
+}
+
+static int efm32x_write_block(struct flash_bank *bank, uint8_t *buf,
+ uint32_t offset, uint32_t count)
+{
+ struct target *target = bank->target;
+ uint32_t buffer_size = 16384;
+ struct working_area *write_algorithm;
+ struct working_area *source;
+ uint32_t address = bank->base + offset;
+ struct reg_param reg_params[5];
+ struct armv7m_algorithm armv7m_info;
+ int ret = ERROR_OK;
+
+ /* see contrib/loaders/flash/efm32.S for src */
+ static const uint8_t efm32x_flash_write_code[] = {
+ /* #define EFM32_MSC_WRITECTRL_OFFSET 0x008 */
+ /* #define EFM32_MSC_WRITECMD_OFFSET 0x00c */
+ /* #define EFM32_MSC_ADDRB_OFFSET 0x010 */
+ /* #define EFM32_MSC_WDATA_OFFSET 0x018 */
+ /* #define EFM32_MSC_STATUS_OFFSET 0x01c */
+ /* #define EFM32_MSC_LOCK_OFFSET 0x03c */
+
+ 0x15, 0x4e, /* ldr r6, =#0x1b71 */
+ 0xc6, 0x63, /* str r6, [r0, #EFM32_MSC_LOCK_OFFSET] */
+ 0x01, 0x26, /* movs r6, #1 */
+ 0x86, 0x60, /* str r6, [r0, #EFM32_MSC_WRITECTRL_OFFSET] */
+
+ /* wait_fifo: */
+ 0x16, 0x68, /* ldr r6, [r2, #0] */
+ 0x00, 0x2e, /* cmp r6, #0 */
+ 0x22, 0xd0, /* beq exit */
+ 0x55, 0x68, /* ldr r5, [r2, #4] */
+ 0xb5, 0x42, /* cmp r5, r6 */
+ 0xf9, 0xd0, /* beq wait_fifo */
+
+ 0x04, 0x61, /* str r4, [r0, #EFM32_MSC_ADDRB_OFFSET] */
+ 0x01, 0x26, /* movs r6, #1 */
+ 0xc6, 0x60, /* str r6, [r0, #EFM32_MSC_WRITECMD_OFFSET] */
+ 0xc6, 0x69, /* ldr r6, [r0, #EFM32_MSC_STATUS_OFFSET] */
+ 0x06, 0x27, /* movs r7, #6 */
+ 0x3e, 0x42, /* tst r6, r7 */
+ 0x16, 0xd1, /* bne error */
+
+ /* wait_wdataready: */
+ 0xc6, 0x69, /* ldr r6, [r0, #EFM32_MSC_STATUS_OFFSET] */
+ 0x08, 0x27, /* movs r7, #8 */
+ 0x3e, 0x42, /* tst r6, r7 */
+ 0xfb, 0xd0, /* beq wait_wdataready */
+
+ 0x2e, 0x68, /* ldr r6, [r5] */
+ 0x86, 0x61, /* str r6, [r0, #EFM32_MSC_WDATA_OFFSET] */
+ 0x08, 0x26, /* movs r6, #8 */
+ 0xc6, 0x60, /* str r6, [r0, #EFM32_MSC_WRITECMD_OFFSET] */
+
+ 0x04, 0x35, /* adds r5, #4 */
+ 0x04, 0x34, /* adds r4, #4 */
+
+ /* busy: */
+ 0xc6, 0x69, /* ldr r6, [r0, #EFM32_MSC_STATUS_OFFSET] */
+ 0x01, 0x27, /* movs r7, #1 */
+ 0x3e, 0x42, /* tst r6, r7 */
+ 0xfb, 0xd1, /* bne busy */
+
+ 0x9d, 0x42, /* cmp r5, r3 */
+ 0x01, 0xd3, /* bcc no_wrap */
+ 0x15, 0x46, /* mov r5, r2 */
+ 0x08, 0x35, /* adds r5, #8 */
+
+ /* no_wrap: */
+ 0x55, 0x60, /* str r5, [r2, #4] */
+ 0x01, 0x39, /* subs r1, r1, #1 */
+ 0x00, 0x29, /* cmp r1, #0 */
+ 0x02, 0xd0, /* beq exit */
+ 0xdb, 0xe7, /* b wait_fifo */
+
+ /* error: */
+ 0x00, 0x20, /* movs r0, #0 */
+ 0x50, 0x60, /* str r0, [r2, #4] */
+
+ /* exit: */
+ 0x30, 0x46, /* mov r0, r6 */
+ 0x00, 0xbe, /* bkpt #0 */
+
+ /* LOCKKEY */
+ 0x71, 0x1b, 0x00, 0x00
+ };
+
+ /* flash write code */
+ if (target_alloc_working_area(target, sizeof(efm32x_flash_write_code),
+ &write_algorithm) != ERROR_OK) {
+ LOG_WARNING("no working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ };
+
+ ret = target_write_buffer(target, write_algorithm->address,
+ sizeof(efm32x_flash_write_code),
+ (uint8_t *)efm32x_flash_write_code);
+ if (ret != ERROR_OK)
+ return ret;
+
+ /* memory buffer */
+ while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) {
+ buffer_size /= 2;
+ buffer_size &= ~3UL; /* Make sure it's 4 byte aligned */
+ if (buffer_size <= 256) {
+ /* we already allocated the writing code, but failed to get a
+ * buffer, free the algorithm */
+ target_free_working_area(target, write_algorithm);
+
+ LOG_WARNING("no large enough working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+ };
+
+ init_reg_param(®_params[0], "r0", 32, PARAM_IN_OUT); /* flash base (in), status (out) */
+ init_reg_param(®_params[1], "r1", 32, PARAM_OUT); /* count (word-32bit) */
+ init_reg_param(®_params[2], "r2", 32, PARAM_OUT); /* buffer start */
+ init_reg_param(®_params[3], "r3", 32, PARAM_OUT); /* buffer end */
+ init_reg_param(®_params[4], "r4", 32, PARAM_IN_OUT); /* target address */
+
+ buf_set_u32(reg_params[0].value, 0, 32, EFM32_MSC_REGBASE);
+ buf_set_u32(reg_params[1].value, 0, 32, count);
+ buf_set_u32(reg_params[2].value, 0, 32, source->address);
+ buf_set_u32(reg_params[3].value, 0, 32, source->address + source->size);
+ buf_set_u32(reg_params[4].value, 0, 32, address);
+
+ armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
+ armv7m_info.core_mode = ARMV7M_MODE_ANY;
+
+ ret = target_run_flash_async_algorithm(target, buf, count, 4,
+ 0, NULL,
+ 5, reg_params,
+ source->address, source->size,
+ write_algorithm->address, 0,
+ &armv7m_info);
+
+ if (ret == ERROR_FLASH_OPERATION_FAILED) {
+ LOG_ERROR("flash write failed at address 0x%"PRIx32,
+ buf_get_u32(reg_params[4].value, 0, 32));
+
+ if (buf_get_u32(reg_params[0].value, 0, 32) &
+ EFM32_MSC_STATUS_LOCKED_MASK) {
+ LOG_ERROR("flash memory write protected");
+ }
+
+ if (buf_get_u32(reg_params[0].value, 0, 32) &
+ EFM32_MSC_STATUS_INVADDR_MASK) {
+ LOG_ERROR("invalid flash memory write address");
+ }
+ }
+
+ target_free_working_area(target, source);
+ target_free_working_area(target, 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 ret;
+}
+
+static int efm32x_write_word(struct flash_bank *bank, uint32_t addr,
+ uint32_t val)
+{
+ /* this function DOES NOT set WREN; must be set already */
+ /* 1. write address to ADDRB
+ 2. write LADDRIM
+ 3. check status (INVADDR, LOCKED)
+ 4. wait for WDATAREADY
+ 5. write data to WDATA
+ 6. write WRITECMD_WRITEONCE to WRITECMD
+ 7. wait until !STATUS_BUSY
+ */
+
+ /* FIXME: EFM32G ref states (7.3.2) that writes should be
+ * performed twice per dword */
+
+ int ret = 0;
+ uint32_t status = 0;
+
+ /* if not called, GDB errors will be reported during large writes */
+ keep_alive();
+
+ ret = target_write_u32(bank->target, EFM32_MSC_ADDRB, addr);
+ if (ERROR_OK != ret)
+ return ret;
+
+ ret = efm32x_set_reg_bits(bank, EFM32_MSC_WRITECMD,
+ EFM32_MSC_WRITECMD_LADDRIM_MASK, 1);
+ if (ERROR_OK != ret)
+ return ret;
+
+ ret = target_read_u32(bank->target, EFM32_MSC_STATUS, &status);
+ if (ERROR_OK != ret)
+ return ret;
+
+ LOG_DEBUG("status 0x%x", status);
+
+ if (status & EFM32_MSC_STATUS_LOCKED_MASK) {
+ LOG_ERROR("Page is locked");
+ return ERROR_FAIL;
+ } else if (status & EFM32_MSC_STATUS_INVADDR_MASK) {
+ LOG_ERROR("Invalid address 0x%x", addr);
+ return ERROR_FAIL;
+ }
+
+ ret = efm32x_wait_status(bank, EFM32_FLASH_WDATAREADY_TMO,
+ EFM32_MSC_STATUS_WDATAREADY_MASK, 1);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Wait for WDATAREADY failed");
+ return ret;
+ }
+
+ ret = target_write_u32(bank->target, EFM32_MSC_WDATA, val);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("WDATA write failed");
+ return ret;
+ }
+
+ ret = target_write_u32(bank->target, EFM32_MSC_WRITECMD,
+ EFM32_MSC_WRITECMD_WRITEONCE_MASK);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("WRITECMD write failed");
+ return ret;
+ }
+
+ ret = efm32x_wait_status(bank, EFM32_FLASH_WRITE_TMO,
+ EFM32_MSC_STATUS_BUSY_MASK, 0);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Wait for BUSY failed");
+ return ret;
+ }
+
+ return ERROR_OK;
+}
+
+static int efm32x_write(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ struct target *target = bank->target;
+ uint8_t *new_buffer = NULL;
+
+ if (target->state != TARGET_HALTED) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if (offset & 0x3) {
+ LOG_ERROR("offset 0x%" PRIx32 " breaks required 4-byte "
+ "alignment", offset);
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
+ if (count & 0x3) {
+ uint32_t old_count = count;
+ count = (old_count | 3) + 1;
+ new_buffer = malloc(count);
+ if (new_buffer == NULL) {
+ LOG_ERROR("odd number of bytes to write and no memory "
+ "for padding buffer");
+ return ERROR_FAIL;
+ }
+ LOG_INFO("odd number of bytes to write (%d), extending to %d "
+ "and padding with 0xff", old_count, count);
+ memset(buffer, 0xff, count);
+ buffer = memcpy(new_buffer, buffer, old_count);
+ }
+
+ uint32_t words_remaining = count / 4;
+ int retval, retval2;
+
+ /* unlock flash registers */
+ efm32x_msc_lock(bank, 0);
+ retval = efm32x_set_wren(bank, 1);
+ if (retval != ERROR_OK)
+ goto cleanup;
+
+ /* try using a block write */
+ retval = efm32x_write_block(bank, buffer, offset, words_remaining);
+
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
+ /* if block write failed (no sufficient working area),
+ * we use normal (slow) single word accesses */
+ LOG_WARNING("couldn't use block writes, falling back to single "
+ "memory accesses");
+
+ while (words_remaining > 0) {
+ uint32_t value;
+ memcpy(&value, buffer, sizeof(uint32_t));
+
+ retval = efm32x_write_word(bank, offset, value);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ words_remaining--;
+ buffer += 4;
+ offset += 4;
+ }
+ }
+
+reset_pg_and_lock:
+ retval2 = efm32x_set_wren(bank, 0);
+ efm32x_msc_lock(bank, 1);
+ if (retval == ERROR_OK)
+ retval = retval2;
+
+cleanup:
+ if (new_buffer)
+ free(new_buffer);
+
+ return retval;
+}
+
+static int efm32x_probe(struct flash_bank *bank)
+{
+ struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
+ struct efm32_info efm32_mcu_info;
+ int ret;
+ int i;
+ uint32_t base_address = 0x00000000;
+
+ efm32x_info->probed = 0;
+ memset(efm32x_info->lb_page, 0xff, LOCKBITS_PAGE_SZ);
+
+ ret = efm32x_read_info(bank, &efm32_mcu_info);
+ if (ERROR_OK != ret)
+ return ret;
+
+ switch (efm32_mcu_info.part_family) {
+ case EFM_FAMILY_ID_GECKO:
+ LOG_INFO("Gecko MCU detected");
+ break;
+ case EFM_FAMILY_ID_GIANT_GECKO:
+ LOG_INFO("Giant Gecko MCU detected");
+ break;
+ case EFM_FAMILY_ID_TINY_GECKO:
+ LOG_INFO("Tiny Gecko MCU detected");
+ break;
+ case EFM_FAMILY_ID_LEOPARD_GECKO:
+ LOG_INFO("Leopard Gecko MCU detected");
+ break;
+ default:
+ LOG_ERROR("Unsupported MCU family %d",
+ efm32_mcu_info.part_family);
+ return ERROR_FAIL;
+ }
+
+ LOG_INFO("flash size = %dkbytes", efm32_mcu_info.flash_sz_kib);
+ LOG_INFO("flash page size = %dbytes", efm32_mcu_info.page_size);
+
+ assert(0 != efm32_mcu_info.page_size);
+
+ int num_pages = efm32_mcu_info.flash_sz_kib * 1024 /
+ efm32_mcu_info.page_size;
+
+ assert(num_pages > 0);
+
+ if (bank->sectors) {
+ free(bank->sectors);
+ bank->sectors = NULL;
+ }
+
+ bank->base = base_address;
+ bank->size = (num_pages * efm32_mcu_info.page_size);
+ bank->num_sectors = num_pages;
+
+ ret = efm32x_read_lock_data(bank);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to read LB data");
+ return ret;
+ }
+
+ bank->sectors = malloc(sizeof(struct flash_sector) * num_pages);
+
+ for (i = 0; i < num_pages; i++) {
+ bank->sectors[i].offset = i * efm32_mcu_info.page_size;
+ bank->sectors[i].size = efm32_mcu_info.page_size;
+ bank->sectors[i].is_erased = -1;
+ bank->sectors[i].is_protected = 1;
+ }
+
+ efm32x_info->probed = 1;
+
+ return ERROR_OK;
+}
+
+static int efm32x_auto_probe(struct flash_bank *bank)
+{
+ struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
+ if (efm32x_info->probed)
+ return ERROR_OK;
+ return efm32x_probe(bank);
+}
+
+static int efm32x_protect_check(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ int ret = 0;
+ int i = 0;
+
+ if (target->state != TARGET_HALTED) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ ret = efm32x_read_lock_data(bank);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to read LB data");
+ return ret;
+ }
+
+ assert(NULL != bank->sectors);
+
+ for (i = 0; i < bank->num_sectors; i++)
+ bank->sectors[i].is_protected = efm32x_get_page_lock(bank, i);
+
+ return ERROR_OK;
+}
+
+static int get_efm32x_info(struct flash_bank *bank, char *buf, int buf_size)
+{
+ struct efm32_info info;
+ int ret = 0;
+ int printed = 0;
+
+ ret = efm32x_read_info(bank, &info);
+ if (ERROR_OK != ret) {
+ LOG_ERROR("Failed to read EFM32 info");
+ return ret;
+ }
+
+ printed = snprintf(buf, buf_size, "EFM32 ");
+ buf += printed;
+ buf_size -= printed;
+
+ if (0 >= buf_size)
+ return ERROR_BUF_TOO_SMALL;
+
+ switch (info.part_family) {
+ case EFM_FAMILY_ID_GECKO:
+ printed = snprintf(buf, buf_size, "Gecko");
+ break;
+ case EFM_FAMILY_ID_GIANT_GECKO:
+ printed = snprintf(buf, buf_size, "Giant Gecko");
+ break;
+ case EFM_FAMILY_ID_TINY_GECKO:
+ printed = snprintf(buf, buf_size, "Tiny Gecko");
+ break;
+ case EFM_FAMILY_ID_LEOPARD_GECKO:
+ printed = snprintf(buf, buf_size, "Leopard Gecko");
+ break;
+ }
+
+ buf += printed;
+ buf_size -= printed;
+
+ if (0 >= buf_size)
+ return ERROR_BUF_TOO_SMALL;
+
+ printed = snprintf(buf, buf_size, " - Rev: %d", info.prod_rev);
+ buf += printed;
+ buf_size -= printed;
+
+ if (0 >= buf_size)
+ return ERROR_BUF_TOO_SMALL;
+
+ return ERROR_OK;
+}
+
+static const struct command_registration efm32x_exec_command_handlers[] = {
+ COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration efm32x_command_handlers[] = {
+ {
+ .name = "efm32",
+ .mode = COMMAND_ANY,
+ .help = "efm32 flash command group",
+ .usage = "",
+ .chain = efm32x_exec_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+struct flash_driver efm32_flash = {
+ .name = "efm32",
+ .commands = efm32x_command_handlers,
+ .flash_bank_command = efm32x_flash_bank_command,
+ .erase = efm32x_erase,
+ .protect = efm32x_protect,
+ .write = efm32x_write,
+ .read = default_flash_read,
+ .probe = efm32x_probe,
+ .auto_probe = efm32x_auto_probe,
+ .erase_check = default_flash_blank_check,
+ .protect_check = efm32x_protect_check,
+ .info = get_efm32x_info,
+};
projects / openocd / commitdiff