- Added support for ARM926EJ-S based cores

- Added contributors to AUTHORS file
- Added link to Joern Kaipf's OOCD-Link


git-svn-id: svn://svn.berlios.de/openocd/trunk@126 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
drath 2007-01-25 10:30:42 +00:00
parent 4fc97d3f27
commit 81e8e44cf0
6 changed files with 899 additions and 7 deletions

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@ -1 +1,4 @@
Dominic Rath <Dominic.Rath@gmx.de> Dominic Rath <Dominic.Rath@gmx.de>
Magnus Lundin <lundin@mlu.mine.nu>
Michael Fischer <fischermi@t-online.de>
Spencer Oliver <spen@spen-soft.co.uk>

8
README
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@ -38,6 +38,9 @@ interface for use with the OpenOCD. Schematics are available at the USBJTAG
website, and a homebrew device can easily be built using the FTDI evaluation website, and a homebrew device can easily be built using the FTDI evaluation
module DLP2232M. module DLP2232M.
* OOCD-Link: http://www.joernonline.de/dw/doku.php?id=en:projects:oocdlink
Similar to the USBJTAG, this design comes with free schematics, too.
* Amontec JTAGkey: www.amontec.com * Amontec JTAGkey: www.amontec.com
The Amontec JTAGkey offers support for a wide variety of target voltages from The Amontec JTAGkey offers support for a wide variety of target voltages from
1.4V to 5V. It also allows the JTAG lines and reset signals to be tri-stated, 1.4V to 5V. It also allows the JTAG lines and reset signals to be tri-stated,
@ -75,11 +78,6 @@ This version of openocd supports the following cores:
Support for Intel XScale CPUs (PXA25x, PXA27x and IXP4xx) is currently being Support for Intel XScale CPUs (PXA25x, PXA27x and IXP4xx) is currently being
developed. developed.
The OpenOCD is only tested with little-endian targets, but support for
big-endian is planned. If you're interested in helping with this (and you
happen to have a big-endian ARM7/ARM9 system, feel free to contact
Dominic.Rath <at> gmx.de.
3. Host platforms 3. Host platforms
OpenOCD was originally developed on x86-Linux, but has since then been ported OpenOCD was originally developed on x86-Linux, but has since then been ported

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@ -3,7 +3,7 @@ METASOURCES = AUTO
noinst_LIBRARIES = libtarget.a noinst_LIBRARIES = libtarget.a
libtarget_a_SOURCES = target.c register.c breakpoints.c armv4_5.c embeddedice.c etm.c arm7tdmi.c arm9tdmi.c \ 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 \ 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 arm966e.c arm926ejs.c
noinst_HEADERS = target.h register.h armv4_5.h embeddedice.h etm.h arm7tdmi.h arm9tdmi.h \ noinst_HEADERS = target.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_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 arm_disassembler.h arm966e.h arm926ejs.h

845
src/target/arm926ejs.c Normal file
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@ -0,0 +1,845 @@
/***************************************************************************
* Copyright (C) 2007 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* 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 "arm926ejs.h"
#include "jtag.h"
#include "log.h"
#include <stdlib.h>
#include <string.h>
#if 0
#define _DEBUG_INSTRUCTION_EXECUTION_
#endif
/* cli handling */
int arm926ejs_register_commands(struct command_context_s *cmd_ctx);
int arm926ejs_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int arm926ejs_handle_cp15i_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int arm926ejs_handle_virt2phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int arm926ejs_handle_cache_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int arm926ejs_handle_md_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int arm926ejs_handle_mw_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int arm926ejs_handle_read_cache_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int arm926ejs_handle_read_mmu_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
/* forward declarations */
int arm926ejs_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
int arm926ejs_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
int arm926ejs_quit();
int arm926ejs_arch_state(struct target_s *target, char *buf, int buf_size);
int arm926ejs_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
int arm926ejs_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
int arm926ejs_soft_reset_halt(struct target_s *target);
#define ARM926EJS_CP15_ADDR(opcode_1, opcode_2, CRn, CRm) ((opcode_1 << 11) | (opcode_2 << 8) | (CRn << 4) | (CRm << 0))
target_type_t arm926ejs_target =
{
.name = "arm926ejs",
.poll = arm7_9_poll,
.arch_state = arm926ejs_arch_state,
.halt = arm7_9_halt,
.resume = arm7_9_resume,
.step = arm7_9_step,
.assert_reset = arm7_9_assert_reset,
.deassert_reset = arm7_9_deassert_reset,
.soft_reset_halt = arm926ejs_soft_reset_halt,
.get_gdb_reg_list = armv4_5_get_gdb_reg_list,
.read_memory = arm7_9_read_memory,
.write_memory = arm926ejs_write_memory,
.bulk_write_memory = arm7_9_bulk_write_memory,
.run_algorithm = armv4_5_run_algorithm,
.add_breakpoint = arm7_9_add_breakpoint,
.remove_breakpoint = arm7_9_remove_breakpoint,
.add_watchpoint = arm7_9_add_watchpoint,
.remove_watchpoint = arm7_9_remove_watchpoint,
.register_commands = arm926ejs_register_commands,
.target_command = arm926ejs_target_command,
.init_target = arm926ejs_init_target,
.quit = arm926ejs_quit
};
int arm926ejs_read_cp15(target_t *target, u32 address, u32 *value)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
scan_field_t fields[4];
u8 address_buf[2];
u8 nr_w_buf = 0;
u8 access = 1;
buf_set_u32(address_buf, 0, 14, address);
jtag_add_end_state(TAP_RTI);
arm_jtag_scann(jtag_info, 0xf);
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
fields[0].device = jtag_info->chain_pos;
fields[0].num_bits = 32;
fields[0].out_value = NULL;
fields[0].out_mask = NULL;
fields[0].in_value = NULL;
fields[0].in_check_value = NULL;
fields[0].in_check_mask = NULL;
fields[0].in_handler = NULL;
fields[0].in_handler_priv = NULL;
fields[1].device = jtag_info->chain_pos;
fields[1].num_bits = 1;
fields[1].out_value = &access;
fields[1].out_mask = NULL;
fields[1].in_value = &access;
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
fields[1].in_handler = NULL;
fields[1].in_handler_priv = NULL;
fields[2].device = jtag_info->chain_pos;
fields[2].num_bits = 14;
fields[2].out_value = address_buf;
fields[2].out_mask = NULL;
fields[2].in_value = NULL;
fields[2].in_check_value = NULL;
fields[2].in_check_mask = NULL;
fields[2].in_handler = NULL;
fields[2].in_handler_priv = NULL;
fields[3].device = jtag_info->chain_pos;
fields[3].num_bits = 1;
fields[3].out_value = &nr_w_buf;
fields[3].out_mask = NULL;
fields[3].in_value = NULL;
fields[3].in_check_value = NULL;
fields[3].in_check_mask = NULL;
fields[3].in_handler = NULL;
fields[3].in_handler_priv = NULL;
jtag_add_dr_scan(4, fields, -1);
/* rescan with NOP, to wait for the access to complete */
access = 0;
fields[0].in_handler_priv = value;
fields[0].in_handler = arm_jtag_buf_to_u32;
do
{
jtag_add_dr_scan(4, fields, -1);
jtag_execute_queue();
} while ((access & 1) != 1);
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
DEBUG("addr: 0x%x value: %8.8x", address, *value);
#endif
return ERROR_OK;
}
int arm926ejs_write_cp15(target_t *target, u32 address, u32 value)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
scan_field_t fields[4];
u8 value_buf[4];
u8 address_buf[2];
u8 nr_w_buf = 1;
u8 access = 1;
buf_set_u32(address_buf, 0, 14, address);
buf_set_u32(value_buf, 0, 32, value);
jtag_add_end_state(TAP_RTI);
arm_jtag_scann(jtag_info, 0xf);
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
fields[0].device = jtag_info->chain_pos;
fields[0].num_bits = 32;
fields[0].out_value = value_buf;
fields[0].out_mask = NULL;
fields[0].in_value = NULL;
fields[0].in_check_value = NULL;
fields[0].in_check_mask = NULL;
fields[0].in_handler = NULL;
fields[0].in_handler_priv = NULL;
fields[1].device = jtag_info->chain_pos;
fields[1].num_bits = 1;
fields[1].out_value = &access;
fields[1].out_mask = NULL;
fields[1].in_value = &access;
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
fields[1].in_handler = NULL;
fields[1].in_handler_priv = NULL;
fields[2].device = jtag_info->chain_pos;
fields[2].num_bits = 14;
fields[2].out_value = address_buf;
fields[2].out_mask = NULL;
fields[2].in_value = NULL;
fields[2].in_check_value = NULL;
fields[2].in_check_mask = NULL;
fields[2].in_handler = NULL;
fields[2].in_handler_priv = NULL;
fields[3].device = jtag_info->chain_pos;
fields[3].num_bits = 1;
fields[3].out_value = &nr_w_buf;
fields[3].out_mask = NULL;
fields[3].in_value = NULL;
fields[3].in_check_value = NULL;
fields[3].in_check_mask = NULL;
fields[3].in_handler = NULL;
fields[3].in_handler_priv = NULL;
jtag_add_dr_scan(4, fields, -1);
/* rescan with NOP, to wait for the access to complete */
access = 0;
do
{
jtag_add_dr_scan(4, fields, -1);
jtag_execute_queue();
} while (access != 1);
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
DEBUG("addr: 0x%x value: %8.8x", address, value);
#endif
return ERROR_OK;
}
int arm926ejs_examine_debug_reason(target_t *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
int debug_reason;
int retval;
embeddedice_read_reg(dbg_stat);
if ((retval = jtag_execute_queue()) != ERROR_OK)
return retval;
debug_reason = buf_get_u32(dbg_stat->value, 6, 4);
switch (debug_reason)
{
case 1:
DEBUG("breakpoint from EICE unit 0");
target->debug_reason = DBG_REASON_BREAKPOINT;
break;
case 2:
DEBUG("breakpoint from EICE unit 1");
target->debug_reason = DBG_REASON_BREAKPOINT;
break;
case 3:
DEBUG("soft breakpoint (BKPT instruction)");
target->debug_reason = DBG_REASON_BREAKPOINT;
break;
case 4:
DEBUG("vector catch breakpoint");
target->debug_reason = DBG_REASON_BREAKPOINT;
break;
case 5:
DEBUG("external breakpoint");
target->debug_reason = DBG_REASON_BREAKPOINT;
break;
case 6:
DEBUG("watchpoint from EICE unit 0");
target->debug_reason = DBG_REASON_WATCHPOINT;
break;
case 7:
DEBUG("watchpoint from EICE unit 1");
target->debug_reason = DBG_REASON_WATCHPOINT;
break;
case 8:
DEBUG("external watchpoint");
target->debug_reason = DBG_REASON_WATCHPOINT;
break;
case 9:
DEBUG("internal debug request");
target->debug_reason = DBG_REASON_DBGRQ;
break;
case 10:
DEBUG("external debug request");
target->debug_reason = DBG_REASON_DBGRQ;
break;
case 11:
ERROR("BUG: debug re-entry from system speed access shouldn't be handled here");
break;
default:
ERROR("BUG: unknown debug reason: 0x%x", debug_reason);
target->debug_reason = DBG_REASON_DBGRQ;
}
return ERROR_OK;
}
u32 arm926ejs_get_ttb(target_t *target)
{
int retval;
u32 ttb = 0x0;
if ((retval = arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 2, 0), &ttb)) != ERROR_OK)
return retval;
return ttb;
}
void arm926ejs_disable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
{
u32 cp15_control;
/* read cp15 control register */
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), &cp15_control);
jtag_execute_queue();
if (mmu)
{
/* invalidate TLB */
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 8, 7), 0x0);
cp15_control &= ~0x1U;
}
if (d_u_cache)
{
u32 debug_override;
/* read-modify-write CP15 debug override register
* to enable "test and clean all" */
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 15, 0), &debug_override);
debug_override |= 0x80000;
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 15, 0), debug_override);
/* clean and invalidate DCache */
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 7, 5), 0x0);
/* write CP15 debug override register
* to disable "test and clean all" */
debug_override &= ~0x80000;
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 15, 0), debug_override);
cp15_control &= ~0x4U;
}
if (i_cache)
{
/* invalidate ICache */
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 7, 5), 0x0);
cp15_control &= ~0x1000U;
}
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), cp15_control);
}
void arm926ejs_enable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
{
u32 cp15_control;
/* read cp15 control register */
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), &cp15_control);
jtag_execute_queue();
if (mmu)
cp15_control |= 0x1U;
if (d_u_cache)
cp15_control |= 0x4U;
if (i_cache)
cp15_control |= 0x1000U;
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), cp15_control);
}
void arm926ejs_post_debug_entry(target_t *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
/* examine cp15 control reg */
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), &arm926ejs->cp15_control_reg);
jtag_execute_queue();
DEBUG("cp15_control_reg: %8.8x", arm926ejs->cp15_control_reg);
if (arm926ejs->armv4_5_mmu.armv4_5_cache.ctype == -1)
{
u32 cache_type_reg;
/* identify caches */
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 1, 0, 0), &cache_type_reg);
jtag_execute_queue();
armv4_5_identify_cache(cache_type_reg, &arm926ejs->armv4_5_mmu.armv4_5_cache);
}
arm926ejs->armv4_5_mmu.mmu_enabled = (arm926ejs->cp15_control_reg & 0x1U) ? 1 : 0;
arm926ejs->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = (arm926ejs->cp15_control_reg & 0x4U) ? 1 : 0;
arm926ejs->armv4_5_mmu.armv4_5_cache.i_cache_enabled = (arm926ejs->cp15_control_reg & 0x1000U) ? 1 : 0;
/* save i/d fault status and address register */
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 5, 0), &arm926ejs->d_fsr);
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 1, 5, 0), &arm926ejs->i_fsr);
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 6, 0), &arm926ejs->d_far);
DEBUG("D FSR: 0x%8.8x, D FAR: 0x%8.8x, I FSR: 0x%8.8x",
arm926ejs->d_fsr, arm926ejs->d_far, arm926ejs->i_fsr);
u32 cache_dbg_ctrl;
/* read-modify-write CP15 cache debug control register
* to disable I/D-cache linefills and force WT */
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(7, 0, 15, 0), &cache_dbg_ctrl);
cache_dbg_ctrl |= 0x7;
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(7, 0, 15, 0), cache_dbg_ctrl);
}
void arm926ejs_pre_restore_context(target_t *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
/* restore i/d fault status and address register */
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 5, 0), arm926ejs->d_fsr);
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 1, 5, 0), arm926ejs->i_fsr);
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 6, 0), arm926ejs->d_far);
u32 cache_dbg_ctrl;
/* read-modify-write CP15 cache debug control register
* to reenable I/D-cache linefills and disable WT */
arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(7, 0, 15, 0), &cache_dbg_ctrl);
cache_dbg_ctrl |= 0x7;
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(7, 0, 15, 0), cache_dbg_ctrl);
}
int arm926ejs_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p, arm9tdmi_common_t **arm9tdmi_p, arm926ejs_common_t **arm926ejs_p)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9;
arm9tdmi_common_t *arm9tdmi;
arm926ejs_common_t *arm926ejs;
if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
{
return -1;
}
arm7_9 = armv4_5->arch_info;
if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
{
return -1;
}
arm9tdmi = arm7_9->arch_info;
if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)
{
return -1;
}
arm926ejs = arm9tdmi->arch_info;
if (arm926ejs->common_magic != ARM926EJS_COMMON_MAGIC)
{
return -1;
}
*armv4_5_p = armv4_5;
*arm7_9_p = arm7_9;
*arm9tdmi_p = arm9tdmi;
*arm926ejs_p = arm926ejs;
return ERROR_OK;
}
int arm926ejs_arch_state(struct target_s *target, char *buf, int buf_size)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
char *state[] =
{
"disabled", "enabled"
};
if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
{
ERROR("BUG: called for a non-ARMv4/5 target");
exit(-1);
}
snprintf(buf, buf_size,
"target halted in %s state due to %s, current mode: %s\n"
"cpsr: 0x%8.8x pc: 0x%8.8x\n"
"MMU: %s, D-Cache: %s, I-Cache: %s",
armv4_5_state_strings[armv4_5->core_state],
target_debug_reason_strings[target->debug_reason],
armv4_5_mode_strings[armv4_5_mode_to_number(armv4_5->core_mode)],
buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32),
state[arm926ejs->armv4_5_mmu.mmu_enabled],
state[arm926ejs->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled],
state[arm926ejs->armv4_5_mmu.armv4_5_cache.i_cache_enabled]);
return ERROR_OK;
}
int arm926ejs_soft_reset_halt(struct target_s *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
if (target->state == TARGET_RUNNING)
{
target->type->halt(target);
}
while (buf_get_u32(dbg_stat->value, EICE_DBG_CONTROL_DBGACK, 1) == 0)
{
embeddedice_read_reg(dbg_stat);
jtag_execute_queue();
}
target->state = TARGET_HALTED;
/* SVC, ARM state, IRQ and FIQ disabled */
buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 8, 0xd3);
armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
/* start fetching from 0x0 */
buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, 0x0);
armv4_5->core_cache->reg_list[15].dirty = 1;
armv4_5->core_cache->reg_list[15].valid = 1;
armv4_5->core_mode = ARMV4_5_MODE_SVC;
armv4_5->core_state = ARMV4_5_STATE_ARM;
arm926ejs_disable_mmu_caches(target, 1, 1, 1);
arm926ejs->armv4_5_mmu.mmu_enabled = 0;
arm926ejs->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = 0;
arm926ejs->armv4_5_mmu.armv4_5_cache.i_cache_enabled = 0;
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
return ERROR_OK;
}
int arm926ejs_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
{
int retval;
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
if ((retval = arm7_9_write_memory(target, address, size, count, buffer)) != ERROR_OK)
return retval;
/* If ICache is enabled, we have to invalidate affected ICache lines
* the DCache is forced to write-through, so we don't have to clean it here
*/
if (arm926ejs->armv4_5_mmu.armv4_5_cache.i_cache_enabled)
{
if (count <= 1)
{
/* invalidate ICache single entry with MVA */
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 1, 7, 5), address);
}
else
{
/* invalidate ICache */
arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 7, 5), address);
}
}
return retval;
}
int arm926ejs_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
{
arm9tdmi_init_target(cmd_ctx, target);
return ERROR_OK;
}
int arm926ejs_quit()
{
return ERROR_OK;
}
int arm926ejs_init_arch_info(target_t *target, arm926ejs_common_t *arm926ejs, int chain_pos, char *variant)
{
arm9tdmi_common_t *arm9tdmi = &arm926ejs->arm9tdmi_common;
arm7_9_common_t *arm7_9 = &arm9tdmi->arm7_9_common;
/* initialize arm9tdmi specific info (including arm7_9 and armv4_5)
*/
arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
arm9tdmi->arch_info = arm926ejs;
arm926ejs->common_magic = ARM926EJS_COMMON_MAGIC;
arm7_9->post_debug_entry = arm926ejs_post_debug_entry;
arm7_9->pre_restore_context = arm926ejs_pre_restore_context;
arm926ejs->armv4_5_mmu.armv4_5_cache.ctype = -1;
arm926ejs->armv4_5_mmu.get_ttb = arm926ejs_get_ttb;
arm926ejs->armv4_5_mmu.read_memory = arm7_9_read_memory;
arm926ejs->armv4_5_mmu.write_memory = arm7_9_write_memory;
arm926ejs->armv4_5_mmu.disable_mmu_caches = arm926ejs_disable_mmu_caches;
arm926ejs->armv4_5_mmu.enable_mmu_caches = arm926ejs_enable_mmu_caches;
arm926ejs->armv4_5_mmu.has_tiny_pages = 1;
arm926ejs->armv4_5_mmu.mmu_enabled = 0;
arm7_9->examine_debug_reason = arm926ejs_examine_debug_reason;
return ERROR_OK;
}
int arm926ejs_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
{
int chain_pos;
char *variant = NULL;
arm926ejs_common_t *arm926ejs = malloc(sizeof(arm926ejs_common_t));
if (argc < 4)
{
ERROR("'target arm926ejs' requires at least one additional argument");
exit(-1);
}
chain_pos = strtoul(args[3], NULL, 0);
if (argc >= 5)
variant = args[4];
DEBUG("chain_pos: %i, variant: %s", chain_pos, variant);
arm926ejs_init_arch_info(target, arm926ejs, chain_pos, variant);
return ERROR_OK;
}
int arm926ejs_register_commands(struct command_context_s *cmd_ctx)
{
int retval;
command_t *arm926ejs_cmd;
retval = arm9tdmi_register_commands(cmd_ctx);
arm926ejs_cmd = register_command(cmd_ctx, NULL, "arm926ejs", NULL, COMMAND_ANY, "arm926ejs specific commands");
register_command(cmd_ctx, arm926ejs_cmd, "cp15", arm926ejs_handle_cp15_command, COMMAND_EXEC, "display/modify cp15 register <opcode_1> <opcode_2> <CRn> <CRm> [value]");
register_command(cmd_ctx, arm926ejs_cmd, "cache_info", arm926ejs_handle_cache_info_command, COMMAND_EXEC, "display information about target caches");
register_command(cmd_ctx, arm926ejs_cmd, "virt2phys", arm926ejs_handle_virt2phys_command, COMMAND_EXEC, "translate va to pa <va>");
register_command(cmd_ctx, arm926ejs_cmd, "mdw_phys", arm926ejs_handle_md_phys_command, COMMAND_EXEC, "display memory words <physical addr> [count]");
register_command(cmd_ctx, arm926ejs_cmd, "mdh_phys", arm926ejs_handle_md_phys_command, COMMAND_EXEC, "display memory half-words <physical addr> [count]");
register_command(cmd_ctx, arm926ejs_cmd, "mdb_phys", arm926ejs_handle_md_phys_command, COMMAND_EXEC, "display memory bytes <physical addr> [count]");
register_command(cmd_ctx, arm926ejs_cmd, "mww_phys", arm926ejs_handle_mw_phys_command, COMMAND_EXEC, "write memory word <physical addr> <value>");
register_command(cmd_ctx, arm926ejs_cmd, "mwh_phys", arm926ejs_handle_mw_phys_command, COMMAND_EXEC, "write memory half-word <physical addr> <value>");
register_command(cmd_ctx, arm926ejs_cmd, "mwb_phys", arm926ejs_handle_mw_phys_command, COMMAND_EXEC, "write memory byte <physical addr> <value>");
return ERROR_OK;
}
int arm926ejs_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int retval;
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
arm7_9_common_t *arm7_9;
arm9tdmi_common_t *arm9tdmi;
arm926ejs_common_t *arm926ejs;
int opcode_1 = strtoul(args[0], NULL, 0);
int opcode_2 = strtoul(args[1], NULL, 0);
int CRn = strtoul(args[2], NULL, 0);
int CRm = strtoul(args[3], NULL, 0);
if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
{
command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
return ERROR_OK;
}
if (target->state != TARGET_HALTED)
{
command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
return ERROR_OK;
}
if ((argc < 4) || (argc > 5))
{
command_print(cmd_ctx, "usage: arm926ejs cp15 <opcode_1> <opcode_2> <CRn> <CRm> [value]");
}
if (argc == 4)
{
u32 value;
if ((retval = arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(opcode_1, opcode_2, CRn, CRm), &value)) != ERROR_OK)
{
command_print(cmd_ctx, "couldn't access register");
return ERROR_OK;
}
jtag_execute_queue();
command_print(cmd_ctx, "%i %i %i %i: %8.8x", opcode_1, opcode_2, CRn, CRm, value);
}
else
{
u32 value = strtoul(args[4], NULL, 0);
if ((retval = arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(opcode_1, opcode_2, CRn, CRm), value)) != ERROR_OK)
{
command_print(cmd_ctx, "couldn't access register");
return ERROR_OK;
}
command_print(cmd_ctx, "%i %i %i %i: %8.8x", opcode_1, opcode_2, CRn, CRm, value);
}
return ERROR_OK;
}
int arm926ejs_handle_cache_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
arm7_9_common_t *arm7_9;
arm9tdmi_common_t *arm9tdmi;
arm926ejs_common_t *arm926ejs;
if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
{
command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
return ERROR_OK;
}
return armv4_5_handle_cache_info_command(cmd_ctx, &arm926ejs->armv4_5_mmu.armv4_5_cache);
}
int arm926ejs_handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
arm7_9_common_t *arm7_9;
arm9tdmi_common_t *arm9tdmi;
arm926ejs_common_t *arm926ejs;
arm_jtag_t *jtag_info;
if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
{
command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
return ERROR_OK;
}
jtag_info = &arm7_9->jtag_info;
if (target->state != TARGET_HALTED)
{
command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
return ERROR_OK;
}
return armv4_5_mmu_handle_virt2phys_command(cmd_ctx, cmd, args, argc, target, &arm926ejs->armv4_5_mmu);
}
int arm926ejs_handle_md_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
arm7_9_common_t *arm7_9;
arm9tdmi_common_t *arm9tdmi;
arm926ejs_common_t *arm926ejs;
arm_jtag_t *jtag_info;
if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
{
command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
return ERROR_OK;
}
jtag_info = &arm7_9->jtag_info;
if (target->state != TARGET_HALTED)
{
command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
return ERROR_OK;
}
return armv4_5_mmu_handle_md_phys_command(cmd_ctx, cmd, args, argc, target, &arm926ejs->armv4_5_mmu);
}
int arm926ejs_handle_mw_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
arm7_9_common_t *arm7_9;
arm9tdmi_common_t *arm9tdmi;
arm926ejs_common_t *arm926ejs;
arm_jtag_t *jtag_info;
if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
{
command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
return ERROR_OK;
}
jtag_info = &arm7_9->jtag_info;
if (target->state != TARGET_HALTED)
{
command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
return ERROR_OK;
}
return armv4_5_mmu_handle_mw_phys_command(cmd_ctx, cmd, args, argc, target, &arm926ejs->armv4_5_mmu);
}

44
src/target/arm926ejs.h Normal file
View File

@ -0,0 +1,44 @@
/***************************************************************************
* Copyright (C) 2007 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* 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 ARM926EJS_H
#define ARM926EJS_H
#include "target.h"
#include "register.h"
#include "embeddedice.h"
#include "arm_jtag.h"
#include "arm9tdmi.h"
#include "armv4_5_mmu.h"
#include "armv4_5_cache.h"
#define ARM926EJS_COMMON_MAGIC 0xa926a926
typedef struct arm926ejs_common_s
{
int common_magic;
armv4_5_mmu_common_t armv4_5_mmu;
arm9tdmi_common_t arm9tdmi_common;
u32 cp15_control_reg;
u32 d_fsr;
u32 i_fsr;
u32 d_far;
} arm926ejs_common_t;
#endif /* ARM926EJS_H */

View File

@ -76,6 +76,7 @@ extern target_type_t arm720t_target;
extern target_type_t arm9tdmi_target; extern target_type_t arm9tdmi_target;
extern target_type_t arm920t_target; extern target_type_t arm920t_target;
extern target_type_t arm966e_target; extern target_type_t arm966e_target;
extern target_type_t arm926ejs_target;
target_type_t *target_types[] = target_type_t *target_types[] =
{ {
@ -84,6 +85,7 @@ target_type_t *target_types[] =
&arm920t_target, &arm920t_target,
&arm720t_target, &arm720t_target,
&arm966e_target, &arm966e_target,
&arm926ejs_target,
NULL, NULL,
}; };