From 7a93100c2dfe743749d2bc512498b096f4332b9b Mon Sep 17 00:00:00 2001 From: oharboe Date: Mon, 4 May 2009 18:44:12 +0000 Subject: [PATCH] Dirk Behme Add minimalist Cortex A8 file git-svn-id: svn://svn.berlios.de/openocd/trunk@1602 b42882b7-edfa-0310-969c-e2dbd0fdcd60 --- src/target/Makefile.am | 4 +- src/target/cortex_a8.c | 273 +++++++++++++++++++++++++++++++++++++++++ src/target/cortex_a8.h | 99 +++++++++++++++ src/target/target.c | 2 + 4 files changed, 376 insertions(+), 2 deletions(-) create mode 100644 src/target/cortex_a8.c create mode 100644 src/target/cortex_a8.h diff --git a/src/target/Makefile.am b/src/target/Makefile.am index db776477..640ff4a6 100644 --- a/src/target/Makefile.am +++ b/src/target/Makefile.am @@ -14,12 +14,12 @@ METASOURCES = AUTO noinst_LIBRARIES = libtarget.a libtarget_a_SOURCES = target.c register.c breakpoints.c armv4_5.c embeddedice.c etm.c arm7tdmi.c arm9tdmi.c \ arm_jtag.c arm7_9_common.c algorithm.c arm920t.c arm720t.c armv4_5_mmu.c armv4_5_cache.c arm_disassembler.c \ - arm966e.c arm926ejs.c feroceon.c etb.c xscale.c arm_simulator.c image.c armv7m.c cortex_m3.c arm_adi_v5.c \ + arm966e.c arm926ejs.c feroceon.c etb.c xscale.c arm_simulator.c image.c armv7m.c cortex_m3.c cortex_a8.c arm_adi_v5.c \ etm_dummy.c $(OOCD_TRACE_FILES) target_request.c trace.c arm11.c arm11_dbgtap.c mips32.c mips_m4k.c \ mips32_pracc.c mips32_dmaacc.c mips_ejtag.c avrt.c noinst_HEADERS = target.h trace.h register.h armv4_5.h embeddedice.h etm.h arm7tdmi.h arm9tdmi.h \ arm_jtag.h arm7_9_common.h arm920t.h arm720t.h armv4_5_mmu.h armv4_5_cache.h breakpoints.h algorithm.h \ - arm_disassembler.h arm966e.h arm926ejs.h etb.h xscale.h arm_simulator.h image.h armv7m.h cortex_m3.h arm_adi_v5.h \ + arm_disassembler.h arm966e.h arm926ejs.h etb.h xscale.h arm_simulator.h image.h armv7m.h cortex_m3.h cortex_a8.h arm_adi_v5.h \ etm_dummy.h oocd_trace.h target_request.h trace.h arm11.h mips32.h mips_m4k.h mips_ejtag.h mips32_pracc.h mips32_dmaacc.h avrt.h nobase_dist_pkglib_DATA = diff --git a/src/target/cortex_a8.c b/src/target/cortex_a8.c new file mode 100644 index 00000000..d94e679e --- /dev/null +++ b/src/target/cortex_a8.c @@ -0,0 +1,273 @@ +/*************************************************************************** + * Copyright (C) 2005 by Dominic Rath * + * Dominic.Rath@gmx.de * + * * + * Copyright (C) 2006 by Magnus Lundin * + * lundin@mlu.mine.nu * + * * + * Copyright (C) 2008 by Spencer Oliver * + * spen@spen-soft.co.uk * + * * + * Copyright (C) 2009 by Dirk Behme * + * dirk.behme@gmail.com - copy from cortex_m3 * + * * + * 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. * + * * + * Cortex-A8(tm) TRM, ARM DDI 0344H * + * * + ***************************************************************************/ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "replacements.h" + +#include "cortex_a8.h" +#include "armv7m.h" + +#include "register.h" +#include "target.h" +#include "target_request.h" +#include "log.h" +#include "jtag.h" +#include "arm_jtag.h" + +#include +#include + +/* cli handling */ +int cortex_a8_register_commands(struct command_context_s *cmd_ctx); + +/* forward declarations */ +int cortex_a8_target_create(struct target_s *target, Jim_Interp *interp); + +target_type_t cortexa8_target = +{ + .name = "cortex_a8", + + .poll = NULL, + .arch_state = armv7m_arch_state, + + .target_request_data = NULL, + + .halt = NULL, + .resume = NULL, + .step = NULL, + + .assert_reset = NULL, + .deassert_reset = NULL, + .soft_reset_halt = NULL, + + .get_gdb_reg_list = armv7m_get_gdb_reg_list, + + .read_memory = cortex_a8_read_memory, + .write_memory = cortex_a8_write_memory, + .bulk_write_memory = NULL, + .checksum_memory = NULL, + .blank_check_memory = NULL, + + .run_algorithm = armv7m_run_algorithm, + + .add_breakpoint = NULL, + .remove_breakpoint = NULL, + .add_watchpoint = NULL, + .remove_watchpoint = NULL, + + .register_commands = cortex_a8_register_commands, + .target_create = cortex_a8_target_create, + .init_target = NULL, + .examine = NULL, + .quit = NULL +}; + +int cortex_a8_dcc_read(swjdp_common_t *swjdp, u8 *value, u8 *ctrl) +{ + u16 dcrdr; + + mem_ap_read_buf_u16( swjdp, (u8*)&dcrdr, 1, DCB_DCRDR); + *ctrl = (u8)dcrdr; + *value = (u8)(dcrdr >> 8); + + LOG_DEBUG("data 0x%x ctrl 0x%x", *value, *ctrl); + + /* write ack back to software dcc register + * signify we have read data */ + if (dcrdr & (1 << 0)) + { + dcrdr = 0; + mem_ap_write_buf_u16( swjdp, (u8*)&dcrdr, 1, DCB_DCRDR); + } + + return ERROR_OK; +} + +int cortex_a8_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer) +{ + /* get pointers to arch-specific information */ + armv7m_common_t *armv7m = target->arch_info; + swjdp_common_t *swjdp = &armv7m->swjdp_info; + int retval; + + /* sanitize arguments */ + if (((size != 4) && (size != 2) && (size != 1)) || (count == 0) || !(buffer)) + return ERROR_INVALID_ARGUMENTS; + + /* cortex_a8 handles unaligned memory access */ + + switch (size) + { + case 4: + retval = mem_ap_read_buf_u32(swjdp, buffer, 4 * count, address); + break; + case 2: + retval = mem_ap_read_buf_u16(swjdp, buffer, 2 * count, address); + break; + case 1: + retval = mem_ap_read_buf_u8(swjdp, buffer, count, address); + break; + default: + LOG_ERROR("BUG: we shouldn't get here"); + exit(-1); + } + + return retval; +} + +int cortex_a8_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer) +{ + /* get pointers to arch-specific information */ + armv7m_common_t *armv7m = target->arch_info; + swjdp_common_t *swjdp = &armv7m->swjdp_info; + int retval; + + /* sanitize arguments */ + if (((size != 4) && (size != 2) && (size != 1)) || (count == 0) || !(buffer)) + return ERROR_INVALID_ARGUMENTS; + + switch (size) + { + case 4: + retval = mem_ap_write_buf_u32(swjdp, buffer, 4 * count, address); + break; + case 2: + retval = mem_ap_write_buf_u16(swjdp, buffer, 2 * count, address); + break; + case 1: + retval = mem_ap_write_buf_u8(swjdp, buffer, count, address); + break; + default: + LOG_ERROR("BUG: we shouldn't get here"); + exit(-1); + } + + return retval; +} + +int cortex_a8_handle_target_request(void *priv) +{ + target_t *target = priv; + if (!target->type->examined) + return ERROR_OK; + armv7m_common_t *armv7m = target->arch_info; + swjdp_common_t *swjdp = &armv7m->swjdp_info; + + if (!target->dbg_msg_enabled) + return ERROR_OK; + + if (target->state == TARGET_RUNNING) + { + u8 data; + u8 ctrl; + + cortex_a8_dcc_read(swjdp, &data, &ctrl); + + /* check if we have data */ + if (ctrl & (1 << 0)) + { + u32 request; + + /* we assume target is quick enough */ + request = data; + cortex_a8_dcc_read(swjdp, &data, &ctrl); + request |= (data << 8); + cortex_a8_dcc_read(swjdp, &data, &ctrl); + request |= (data << 16); + cortex_a8_dcc_read(swjdp, &data, &ctrl); + request |= (data << 24); + target_request(target, request); + } + } + + return ERROR_OK; +} + +int cortex_a8_init_arch_info(target_t *target, cortex_a8_common_t *cortex_a8, jtag_tap_t *tap) +{ + armv7m_common_t *armv7m; + armv7m = &cortex_a8->armv7m; + + /* prepare JTAG information for the new target */ + cortex_a8->jtag_info.tap = tap; + cortex_a8->jtag_info.scann_size = 4; + + armv7m->swjdp_info.dp_select_value = -1; + armv7m->swjdp_info.ap_csw_value = -1; + armv7m->swjdp_info.ap_tar_value = -1; + armv7m->swjdp_info.jtag_info = &cortex_a8->jtag_info; + + /* initialize arch-specific breakpoint handling */ + + cortex_a8->common_magic = CORTEX_A8_COMMON_MAGIC; + cortex_a8->arch_info = NULL; + + /* register arch-specific functions */ + armv7m->examine_debug_reason = NULL; + + armv7m->pre_debug_entry = NULL; + armv7m->post_debug_entry = NULL; + + armv7m->pre_restore_context = NULL; + armv7m->post_restore_context = NULL; + + armv7m_init_arch_info(target, armv7m); + armv7m->arch_info = cortex_a8; + armv7m->load_core_reg_u32 = NULL; + armv7m->store_core_reg_u32 = NULL; + + target_register_timer_callback(cortex_a8_handle_target_request, 1, 1, target); + + return ERROR_OK; +} + +int cortex_a8_target_create(struct target_s *target, Jim_Interp *interp) +{ + cortex_a8_common_t *cortex_a8 = calloc(1,sizeof(cortex_a8_common_t)); + + cortex_a8_init_arch_info(target, cortex_a8, target->tap); + + return ERROR_OK; +} + +int cortex_a8_register_commands(struct command_context_s *cmd_ctx) +{ + int retval; + + retval = armv7m_register_commands(cmd_ctx); + + register_command(cmd_ctx, NULL, "cortex_a8", NULL, COMMAND_ANY, "cortex_a8 specific commands"); + + return retval; +} diff --git a/src/target/cortex_a8.h b/src/target/cortex_a8.h new file mode 100644 index 00000000..9ef1e146 --- /dev/null +++ b/src/target/cortex_a8.h @@ -0,0 +1,99 @@ +/*************************************************************************** + * Copyright (C) 2005 by Dominic Rath * + * Dominic.Rath@gmx.de * + * * + * Copyright (C) 2006 by Magnus Lundin * + * lundin@mlu.mine.nu * + * * + * Copyright (C) 2008 by Spencer Oliver * + * spen@spen-soft.co.uk * + * * + * Copyright (C) 2009 by Dirk Behme * + * dirk.behme@gmail.com - copy from cortex_m3 * + * * + * 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. * + ***************************************************************************/ +#ifndef CORTEX_A8_H +#define CORTEX_A8_H + +#include "register.h" +#include "target.h" +#include "armv7m.h" + +extern char* cortex_a8_state_strings[]; + +#define CORTEX_A8_COMMON_MAGIC 0x411fc082 + +#define CPUID 0x54011D00 +/* Debug Control Block */ +#define DCB_DHCSR 0x54011DF0 +#define DCB_DCRSR 0x54011DF4 +#define DCB_DCRDR 0x54011DF8 +#define DCB_DEMCR 0x54011DFC + +typedef struct cortex_a8_fp_comparator_s +{ + int used; + int type; + u32 fpcr_value; + u32 fpcr_address; +} cortex_a8_fp_comparator_t; + +typedef struct cortex_a8_dwt_comparator_s +{ + int used; + u32 comp; + u32 mask; + u32 function; + u32 dwt_comparator_address; +} cortex_a8_dwt_comparator_t; + +typedef struct cortex_a8_common_s +{ + int common_magic; + arm_jtag_t jtag_info; + + /* Context information */ + u32 dcb_dhcsr; + u32 nvic_dfsr; /* Debug Fault Status Register - shows reason for debug halt */ + u32 nvic_icsr; /* Interrupt Control State Register - shows active and pending IRQ */ + + /* Flash Patch and Breakpoint (FPB) */ + int fp_num_lit; + int fp_num_code; + int fp_code_available; + int fpb_enabled; + int auto_bp_type; + cortex_a8_fp_comparator_t *fp_comparator_list; + + /* Data Watchpoint and Trace (DWT) */ + int dwt_num_comp; + int dwt_comp_available; + cortex_a8_dwt_comparator_t *dwt_comparator_list; + + /* Interrupts */ + int intlinesnum; + u32 *intsetenable; + + armv7m_common_t armv7m; + void *arch_info; +} cortex_a8_common_t; + +extern int cortex_a8_init_arch_info(target_t *target, cortex_a8_common_t *cortex_a8, jtag_tap_t *tap); +int cortex_a8_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer); +int cortex_a8_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer); + +#endif /* CORTEX_A8_H */ diff --git a/src/target/target.c b/src/target/target.c index dd61b04c..8a38f1fb 100644 --- a/src/target/target.c +++ b/src/target/target.c @@ -101,6 +101,7 @@ extern target_type_t arm926ejs_target; extern target_type_t feroceon_target; extern target_type_t xscale_target; extern target_type_t cortexm3_target; +extern target_type_t cortexa8_target; extern target_type_t arm11_target; extern target_type_t mips_m4k_target; extern target_type_t avr_target; @@ -116,6 +117,7 @@ target_type_t *target_types[] = &feroceon_target, &xscale_target, &cortexm3_target, + &cortexa8_target, &arm11_target, &mips_m4k_target, &avr_target, -- 2.39.2