/***************************************************************************
- * Copyright (C) 2008 by Marvell Semiconductors, Inc. *
+ * Copyright (C) 2008-2009 by Marvell Semiconductors, Inc. *
* Written by Nicolas Pitre <nico@marvell.com> *
* *
+ * Copyright (C) 2008 by Hongtao Zheng *
+ * hontor@126.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 *
* 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. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
/*
- * Marvell Feroceon (88F5182, 88F5281) support.
+ * Marvell Feroceon/Dragonite support.
*
- * The Feroceon core mimics the ARM926 ICE interface with the following
- * differences:
+ * The Feroceon core, as found in the Orion and Kirkwood SoCs amongst others,
+ * mimics the ARM926 ICE interface with the following differences:
*
* - the MOE (method of entry) reporting is not implemented
*
*
* - the DCC channel is half duplex (only one FIFO for both directions) with
* seemingly no proper flow control.
+ *
+ * The Dragonite core is the non-mmu version based on the ARM966 model, and
+ * it shares the above issues as well.
*/
#ifdef HAVE_CONFIG_H
#endif
#include "arm926ejs.h"
-#include "jtag.h"
-#include "log.h"
-#include "arm_simulator.h"
-
-#include <stdlib.h>
-#include <string.h>
+#include "arm966e.h"
+#include "target_type.h"
+#include "register.h"
+#include "arm_opcodes.h"
+static int feroceon_assert_reset(struct target *target)
+{
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ int ud = arm7_9->use_dbgrq;
-int feroceon_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
-int feroceon_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer);
-int feroceon_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
-int feroceon_quit();
+ arm7_9->use_dbgrq = 0;
+ if (target->reset_halt)
+ arm7_9_halt(target);
+ arm7_9->use_dbgrq = ud;
+ return arm7_9_assert_reset(target);
+}
-target_type_t feroceon_target =
+static int feroceon_dummy_clock_out(struct arm_jtag *jtag_info, uint32_t instr)
{
- .name = "feroceon",
+ struct scan_field fields[3];
+ uint8_t out_buf[4];
+ uint8_t instr_buf[4];
+ uint8_t sysspeed_buf = 0x0;
+ int retval;
- .poll = arm7_9_poll,
- .arch_state = arm926ejs_arch_state,
+ /* prepare buffer */
+ buf_set_u32(out_buf, 0, 32, 0);
- .target_request_data = arm7_9_target_request_data,
+ buf_set_u32(instr_buf, 0, 32, flip_u32(instr, 32));
- .halt = arm7_9_halt,
- .resume = arm7_9_resume,
- .step = arm7_9_step,
+ retval = arm_jtag_scann(jtag_info, 0x1, TAP_DRPAUSE);
+ if (retval != ERROR_OK)
+ return retval;
- .assert_reset = arm7_9_assert_reset,
- .deassert_reset = arm7_9_deassert_reset,
- .soft_reset_halt = arm926ejs_soft_reset_halt,
- .prepare_reset_halt = arm7_9_prepare_reset_halt,
-
- .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
+ retval = arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL, TAP_DRPAUSE);
+ if (retval != ERROR_OK)
+ return retval;
- .read_memory = arm7_9_read_memory,
- .write_memory = arm926ejs_write_memory,
- .bulk_write_memory = feroceon_bulk_write_memory,
- .checksum_memory = arm7_9_checksum_memory,
-
- .run_algorithm = armv4_5_run_algorithm,
+ fields[0].num_bits = 32;
+ fields[0].out_value = out_buf;
+ fields[0].in_value = NULL;
- .add_breakpoint = arm7_9_add_breakpoint,
- .remove_breakpoint = arm7_9_remove_breakpoint,
- .add_watchpoint = arm7_9_add_watchpoint,
- .remove_watchpoint = arm7_9_remove_watchpoint,
+ fields[1].num_bits = 3;
+ fields[1].out_value = &sysspeed_buf;
+ fields[1].in_value = NULL;
- .register_commands = arm926ejs_register_commands,
- .target_command = feroceon_target_command,
- .init_target = feroceon_init_target,
- .quit = feroceon_quit
-};
+ fields[2].num_bits = 32;
+ fields[2].out_value = instr_buf;
+ fields[2].in_value = NULL;
+
+ jtag_add_dr_scan(jtag_info->tap, 3, fields, TAP_DRPAUSE);
+ /* no jtag_add_runtest(0, TAP_DRPAUSE) here */
+
+ return ERROR_OK;
+}
-void feroceon_change_to_arm(target_t *target, u32 *r0, u32 *pc)
+static void feroceon_change_to_arm(struct target *target, uint32_t *r0,
+ uint32_t *pc)
{
- 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;
-
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
/*
- * save r0 before using it and put system in ARM state
+ * save r0 before using it and put system in ARM state
* to allow common handling of ARM and THUMB debugging
*/
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ feroceon_dummy_clock_out(jtag_info, ARMV4_5_T_NOP);
+ feroceon_dummy_clock_out(jtag_info, ARMV4_5_T_NOP);
+ feroceon_dummy_clock_out(jtag_info, ARMV4_5_T_NOP);
+
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
/*
* fix program counter:
- * MOV R0, PC was the 10th instruction (+18)
+ * MOV R0, PC was the 7th instruction (+12)
* reading PC in Thumb state gives address of instruction + 4
*/
- *pc -= 22;
+ *pc -= (12 + 4);
}
-void feroceon_read_core_regs(target_t *target, u32 mask, u32* core_regs[16])
+static void feroceon_read_core_regs(struct target *target,
+ uint32_t mask, uint32_t *core_regs[16])
{
int i;
- 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;
-
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
}
-void feroceon_read_core_regs_target_buffer(target_t *target, u32 mask, void* buffer, int size)
+static void feroceon_read_core_regs_target_buffer(struct target *target,
+ uint32_t mask, void *buffer, int size)
{
int i;
- 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;
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
int be = (target->endianness == TARGET_BIG_ENDIAN) ? 1 : 0;
- u32 *buf_u32 = buffer;
- u16 *buf_u16 = buffer;
- u8 *buf_u8 = buffer;
+ uint32_t *buf_u32 = buffer;
+ uint16_t *buf_u16 = buffer;
+ uint8_t *buf_u8 = buffer;
arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- for (i = 0; i <= 15; i++)
- {
+ for (i = 0; i <= 15; i++) {
if (mask & (1 << i)) {
- switch (size)
- {
+ switch (size) {
case 4:
arm9tdmi_clock_data_in_endianness(jtag_info, buf_u32++, 4, be);
break;
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
}
-void feroceon_read_xpsr(target_t *target, u32 *xpsr, int spsr)
+static void feroceon_read_xpsr(struct target *target, uint32_t *xpsr, int spsr)
{
- 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;
-
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
arm9tdmi_clock_out(jtag_info, ARMV4_5_MRS(0, spsr & 1), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
}
-void feroceon_write_xpsr(target_t *target, u32 xpsr, int spsr)
+static void feroceon_write_xpsr(struct target *target, uint32_t xpsr, int spsr)
{
- 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;
-
- DEBUG("xpsr: %8.8x, spsr: %i", xpsr, spsr);
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
+ LOG_DEBUG("xpsr: %8.8" PRIx32 ", spsr: %i", xpsr, spsr);
arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr & 0xff, 0, 1, spsr), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
}
-void feroceon_write_xpsr_im8(target_t *target, u8 xpsr_im, int rot, int spsr)
+static void feroceon_write_xpsr_im8(struct target *target,
+ uint8_t xpsr_im, int rot, int spsr)
{
- 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;
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
- DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
+ LOG_DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr_im, rot, 1, spsr), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
}
-void feroceon_write_core_regs(target_t *target, u32 mask, u32 core_regs[16])
+static void feroceon_write_core_regs(struct target *target,
+ uint32_t mask, uint32_t core_regs[16])
{
int i;
- 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;
-
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
}
-void feroceon_branch_resume(target_t *target)
+static void feroceon_branch_resume(struct target *target)
{
- 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;
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_B(0xfffff9, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
- /* need BYPASS before RESTART */
- jtag_add_end_state(TAP_RTI);
- arm_jtag_set_instr(jtag_info, 0xf, NULL);
+ arm7_9->need_bypass_before_restart = 1;
}
-void feroceon_branch_resume_thumb(target_t *target)
+static void feroceon_branch_resume_thumb(struct target *target)
{
- DEBUG("-");
-
- 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;
- u32 r0 = buf_get_u32(armv4_5->core_cache->reg_list[0].value, 0, 32);
- u32 pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
+ LOG_DEBUG("-");
- arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, 0x8000, 0, 0), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, pc & ~3, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+ uint32_t r0 = buf_get_u32(arm->core_cache->reg_list[0].value, 0, 32);
+ uint32_t pc = buf_get_u32(arm->pc->value, 0, 32);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, 0xE28F0001, 0, NULL, 0); /* add r0,r15,#1 */
+ arm9tdmi_clock_out(jtag_info, 0xE28F0001, 0, NULL, 0); /* add r0,pc,#1 */
arm9tdmi_clock_out(jtag_info, ARMV4_5_BX(0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDMIA(0, 1), 0, NULL, 0);
+
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDMIA(0, 0x1), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, r0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7e9 + pc), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 1);
- /* need BYPASS before RESTART */
- jtag_add_end_state(TAP_RTI);
- arm_jtag_set_instr(jtag_info, 0xf, NULL);
+ arm7_9->need_bypass_before_restart = 1;
}
-int feroceon_read_cp15(target_t *target, u32 op1, u32 op2, u32 CRn, u32 CRm, u32 *value)
+static int feroceon_read_cp15(struct target *target, uint32_t op1,
+ uint32_t op2, uint32_t CRn, uint32_t CRm, uint32_t *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;
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
int err;
arm9tdmi_clock_out(jtag_info, ARMV4_5_MRC(15, op1, 0, CRn, CRm, op2), 0, NULL, 0);
return jtag_execute_queue();
}
-int feroceon_write_cp15(target_t *target, u32 op1, u32 op2, u32 CRn, u32 CRm, u32 value)
+static int feroceon_write_cp15(struct target *target, uint32_t op1,
+ uint32_t op2, uint32_t CRn, uint32_t CRm, uint32_t 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;
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, 1, 0, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
return arm7_9_execute_sys_speed(target);
}
-void feroceon_enable_single_step(target_t *target)
+static void feroceon_set_dbgrq(struct target *target)
{
- armv4_5_common_t *armv4_5 = target->arch_info;
- arm7_9_common_t *arm7_9 = armv4_5->arch_info;
- u32 next_pc;
-
- /* calculate PC of next instruction */
- if (arm_simulate_step(target, &next_pc) != ERROR_OK)
- {
- u32 current_pc, current_opcode;
- current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
- target_read_u32(target, current_pc, ¤t_opcode);
- ERROR("BUG: couldn't calculate PC of next instruction, "
- "current opcode is 0x%8.8x", current_opcode);
- next_pc = current_pc;
- }
- arm7_9_restore_context(target);
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ struct reg *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL];
+
+ buf_set_u32(dbg_ctrl->value, 0, 8, 2);
+ embeddedice_store_reg(dbg_ctrl);
+}
+
+static void feroceon_enable_single_step(struct target *target, uint32_t next_pc)
+{
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
/* set a breakpoint there */
embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_W0_ADDR_VALUE], next_pc);
embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_W0_CONTROL_MASK], 0xf7);
}
-void feroceon_disable_single_step(target_t *target)
+static void feroceon_disable_single_step(struct target *target)
{
- armv4_5_common_t *armv4_5 = target->arch_info;
- arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_W0_ADDR_VALUE]);
embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_W0_ADDR_MASK]);
embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_W0_CONTROL_VALUE]);
}
-int feroceon_examine_debug_reason(target_t *target)
+static int feroceon_examine_debug_reason(struct target *target)
{
/* the MOE is not implemented */
if (target->debug_reason != DBG_REASON_SINGLESTEP)
- {
target->debug_reason = DBG_REASON_DBGRQ;
- }
return ERROR_OK;
}
-int feroceon_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer)
+static int feroceon_bulk_write_memory(struct target *target,
+ uint32_t address, uint32_t count, const uint8_t *buffer)
{
- armv4_5_common_t *armv4_5 = target->arch_info;
- arm7_9_common_t *arm7_9 = armv4_5->arch_info;
- enum armv4_5_state core_state = armv4_5->core_state;
- u32 x, flip, shift, save[7];
- int i;
+ int retval;
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ enum arm_state core_state = arm->core_state;
+ uint32_t x, flip, shift, save[7];
+ uint32_t i;
/*
* We can't use the dcc flow control bits, so let's transfer data
* with 31 bits and flip the MSB each time a new data word is sent.
*/
- static u32 dcc_code[] =
- {
+ static uint32_t dcc_code[] = {
0xee115e10, /* 3: mrc p14, 0, r5, c1, c0, 0 */
0xe3a0301e, /* 1: mov r3, #30 */
0xe3a04002, /* mov r4, #2 */
0xeafffff3, /* b 3b */
};
- int dcc_size = sizeof(dcc_code);
+ uint32_t dcc_size = sizeof(dcc_code);
+
+ if (address % 4 != 0)
+ return ERROR_TARGET_UNALIGNED_ACCESS;
if (!arm7_9->dcc_downloads)
- return target->type->write_memory(target, address, 4, count, buffer);
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
/* regrab previously allocated working_area, or allocate a new one */
- if (!arm7_9->dcc_working_area)
- {
- u8 dcc_code_buf[dcc_size];
+ if (!arm7_9->dcc_working_area) {
+ uint8_t dcc_code_buf[dcc_size];
/* make sure we have a working area */
- if (target_alloc_working_area(target, dcc_size, &arm7_9->dcc_working_area) != ERROR_OK)
- {
- INFO("no working area available, falling back to memory writes");
- return target->type->write_memory(target, address, 4, count, buffer);
+ if (target_alloc_working_area(target, dcc_size, &arm7_9->dcc_working_area) != ERROR_OK) {
+ LOG_INFO("no working area available, falling back to memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
/* copy target instructions to target endianness */
- for (i = 0; i < dcc_size/4; i++)
- target_buffer_set_u32(target, dcc_code_buf + i*4, dcc_code[i]);
-
- /* write DCC code to working area */
- target->type->write_memory(target, arm7_9->dcc_working_area->address, 4, dcc_size, dcc_code_buf);
+ target_buffer_set_u32_array(target, dcc_code_buf, ARRAY_SIZE(dcc_code), dcc_code);
+
+ /* write DCC code to working area, using the non-optimized
+ * memory write to avoid ending up here again */
+ retval = arm7_9_write_memory_no_opt(target,
+ arm7_9->dcc_working_area->address, 4, dcc_size/4, dcc_code_buf);
+ if (retval != ERROR_OK)
+ return retval;
}
/* backup clobbered processor state */
for (i = 0; i <= 5; i++)
- save[i] = buf_get_u32(armv4_5->core_cache->reg_list[i].value, 0, 32);
- save[i] = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
+ save[i] = buf_get_u32(arm->core_cache->reg_list[i].value, 0, 32);
+ save[i] = buf_get_u32(arm->pc->value, 0, 32);
/* set up target address in r0 */
- buf_set_u32(armv4_5->core_cache->reg_list[0].value, 0, 32, address);
- armv4_5->core_cache->reg_list[0].valid = 1;
- armv4_5->core_cache->reg_list[0].dirty = 1;
- armv4_5->core_state = ARMV4_5_STATE_ARM;
+ buf_set_u32(arm->core_cache->reg_list[0].value, 0, 32, address);
+ arm->core_cache->reg_list[0].valid = 1;
+ arm->core_cache->reg_list[0].dirty = 1;
+ arm->core_state = ARM_STATE_ARM;
- embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], 0);
+ embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], 0);
arm7_9_resume(target, 0, arm7_9->dcc_working_area->address, 1, 1);
/* send data over */
x = 0;
flip = 0;
shift = 1;
- for (i = 0; i < count; i++)
- {
- u32 y = target_buffer_get_u32(target, buffer);
- u32 z = (x >> 1) | (y >> shift) | (flip ^= 0x80000000);
- embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], z);
+ for (i = 0; i < count; i++) {
+ uint32_t y = target_buffer_get_u32(target, buffer);
+ uint32_t z = (x >> 1) | (y >> shift) | (flip ^= 0x80000000);
+ embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], z);
x = y << (32 - shift);
- if (++shift >= 32 || i + 1 >= count)
- {
+ if (++shift >= 32 || i + 1 >= count) {
z = (x >> 1) | (flip ^= 0x80000000);
- embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], z);
+ embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], z);
x = 0;
shift = 1;
}
buffer += 4;
}
- target->type->halt(target);
- while (target->state != TARGET_HALTED)
- target->type->poll(target);
+ retval = target_halt(target);
+ if (retval == ERROR_OK)
+ retval = target_wait_state(target, TARGET_HALTED, 500);
+ if (retval == ERROR_OK) {
+ uint32_t endaddress =
+ buf_get_u32(arm->core_cache->reg_list[0].value, 0, 32);
+ if (endaddress != address + count*4) {
+ LOG_ERROR("DCC write failed,"
+ " expected end address 0x%08" PRIx32
+ " got 0x%0" PRIx32 "",
+ address + count*4, endaddress);
+ retval = ERROR_FAIL;
+ }
+ }
/* restore target state */
- for (i = 0; i <= 5; i++)
- {
- buf_set_u32(armv4_5->core_cache->reg_list[i].value, 0, 32, save[i]);
- armv4_5->core_cache->reg_list[i].valid = 1;
- armv4_5->core_cache->reg_list[i].dirty = 1;
+ for (i = 0; i <= 5; i++) {
+ buf_set_u32(arm->core_cache->reg_list[i].value, 0, 32, save[i]);
+ arm->core_cache->reg_list[i].valid = 1;
+ arm->core_cache->reg_list[i].dirty = 1;
}
- buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, save[i]);
- armv4_5->core_cache->reg_list[15].valid = 1;
- armv4_5->core_cache->reg_list[15].dirty = 1;
- armv4_5->core_state = core_state;
+ buf_set_u32(arm->pc->value, 0, 32, save[i]);
+ arm->pc->valid = 1;
+ arm->pc->dirty = 1;
+ arm->core_state = core_state;
- return ERROR_OK;
+ return retval;
}
-int feroceon_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
+static int feroceon_init_target(struct command_context *cmd_ctx,
+ struct target *target)
{
- armv4_5_common_t *armv4_5;
- arm7_9_common_t *arm7_9;
-
arm9tdmi_init_target(cmd_ctx, target);
-
- armv4_5 = target->arch_info;
- arm7_9 = armv4_5->arch_info;
-
- /* the COMMS_CTRL bits are all contiguous */
- if (buf_get_u32(arm7_9->eice_cache->reg_list[EICE_COMMS_CTRL].value, 2, 4) != 6)
- ERROR("unexpected Feroceon EICE version signature");
-
- arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].size = 6;
- arm7_9->eice_cache->reg_list[EICE_DBG_STAT].size = 5;
- arm7_9->has_monitor_mode = 1;
-
- /* vector catch reg is not initialized on reset */
- embeddedice_set_reg(&arm7_9->eice_cache->reg_list[EICE_VEC_CATCH], 0);
-
- /* clear monitor mode, enable comparators */
- embeddedice_read_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
- jtag_execute_queue();
- buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 4, 1, 0);
- buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 5, 1, 0);
- embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
-
return ERROR_OK;
}
-int feroceon_quit()
+static void feroceon_common_setup(struct target *target)
{
- return ERROR_OK;
-}
-
-int feroceon_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
-{
- int chain_pos;
- char *variant = NULL;
- armv4_5_common_t *armv4_5;
- arm7_9_common_t *arm7_9;
- arm926ejs_common_t *arm926ejs = malloc(sizeof(arm926ejs_common_t));
- memset(arm926ejs, 0, sizeof(*arm926ejs));
-
- 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);
-
- armv4_5 = target->arch_info;
- arm7_9 = armv4_5->arch_info;
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
/* override some insn sequence functions */
arm7_9->change_to_arm = feroceon_change_to_arm;
arm7_9->enable_single_step = feroceon_enable_single_step;
arm7_9->disable_single_step = feroceon_disable_single_step;
+ arm7_9->bulk_write_memory = feroceon_bulk_write_memory;
+
/* MOE is not implemented */
arm7_9->examine_debug_reason = feroceon_examine_debug_reason;
+ /* Note: asserting DBGRQ might not win over the undef exception.
+ If that happens then just use "arm7_9 dbgrq disable". */
+ arm7_9->use_dbgrq = 1;
+ arm7_9->set_special_dbgrq = feroceon_set_dbgrq;
+
+ /* only one working comparator */
+ arm7_9->wp_available_max = 1;
+ arm7_9->wp1_used_default = -1;
+}
+
+static int feroceon_target_create(struct target *target, Jim_Interp *interp)
+{
+ struct arm926ejs_common *arm926ejs = calloc(1, sizeof(struct arm926ejs_common));
+
+ arm926ejs_init_arch_info(target, arm926ejs, target->tap);
+ feroceon_common_setup(target);
+
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ arm7_9->write_memory = arm926ejs_write_memory;
+
/* the standard ARM926 methods don't always work (don't ask...) */
arm926ejs->read_cp15 = feroceon_read_cp15;
arm926ejs->write_cp15 = feroceon_write_cp15;
- /* asserting DBGRQ won't win over the undef exception */
- arm7_9->use_dbgrq = 0;
+ return ERROR_OK;
+}
- /* only one working comparator */
- arm7_9->wp_available = 1;
- arm7_9->wp1_used = -1;
+static int dragonite_target_create(struct target *target, Jim_Interp *interp)
+{
+ struct arm966e_common *arm966e = calloc(1, sizeof(struct arm966e_common));
+
+ arm966e_init_arch_info(target, arm966e, target->tap);
+ feroceon_common_setup(target);
+
+ struct arm *arm = target->arch_info;
+ struct arm7_9_common *arm7_9 = arm->arch_info;
+ arm7_9->write_memory = arm7_9_write_memory;
+
+ return ERROR_OK;
+}
+
+static int feroceon_examine(struct target *target)
+{
+ struct arm *arm;
+ struct arm7_9_common *arm7_9;
+ int retval;
+
+ retval = arm7_9_examine(target);
+ if (retval != ERROR_OK)
+ return retval;
+
+ arm = target->arch_info;
+ arm7_9 = arm->arch_info;
+
+ /* the COMMS_CTRL bits are all contiguous */
+ if (buf_get_u32(arm7_9->eice_cache->reg_list[EICE_COMMS_CTRL].value, 2, 4) != 6)
+ LOG_ERROR("unexpected Feroceon EICE version signature");
+
+ arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].size = 6;
+ arm7_9->eice_cache->reg_list[EICE_DBG_STAT].size = 5;
+ arm7_9->has_monitor_mode = 1;
+
+ /* vector catch reg is not initialized on reset */
+ embeddedice_set_reg(&arm7_9->eice_cache->reg_list[EICE_VEC_CATCH], 0);
+
+ /* clear monitor mode, enable comparators */
+ embeddedice_read_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
+ jtag_execute_queue();
+ buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 4, 1, 0);
+ buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 5, 1, 0);
+ embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
return ERROR_OK;
}
+
+struct target_type feroceon_target = {
+ .name = "feroceon",
+
+ .poll = arm7_9_poll,
+ .arch_state = arm926ejs_arch_state,
+
+ .target_request_data = arm7_9_target_request_data,
+
+ .halt = arm7_9_halt,
+ .resume = arm7_9_resume,
+ .step = arm7_9_step,
+
+ .assert_reset = feroceon_assert_reset,
+ .deassert_reset = arm7_9_deassert_reset,
+ .soft_reset_halt = arm926ejs_soft_reset_halt,
+
+ .get_gdb_reg_list = arm_get_gdb_reg_list,
+
+ .read_memory = arm7_9_read_memory,
+ .write_memory = arm7_9_write_memory_opt,
+
+ .checksum_memory = arm_checksum_memory,
+ .blank_check_memory = arm_blank_check_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,
+
+ .commands = arm926ejs_command_handlers,
+ .target_create = feroceon_target_create,
+ .init_target = feroceon_init_target,
+ .examine = feroceon_examine,
+};
+
+struct target_type dragonite_target = {
+ .name = "dragonite",
+
+ .poll = arm7_9_poll,
+ .arch_state = arm_arch_state,
+
+ .target_request_data = arm7_9_target_request_data,
+
+ .halt = arm7_9_halt,
+ .resume = arm7_9_resume,
+ .step = arm7_9_step,
+
+ .assert_reset = feroceon_assert_reset,
+ .deassert_reset = arm7_9_deassert_reset,
+ .soft_reset_halt = arm7_9_soft_reset_halt,
+
+ .get_gdb_reg_list = arm_get_gdb_reg_list,
+
+ .read_memory = arm7_9_read_memory,
+ .write_memory = arm7_9_write_memory_opt,
+
+ .checksum_memory = arm_checksum_memory,
+ .blank_check_memory = arm_blank_check_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,
+
+ .commands = arm966e_command_handlers,
+ .target_create = dragonite_target_create,
+ .init_target = feroceon_init_target,
+ .examine = feroceon_examine,
+};
projects / fw / openocd / blobdiff