* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
+ * oyvind.harboe@zylin.com *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
#endif
#include "arm7tdmi.h"
+#include "target_type.h"
-#include "arm7_9_common.h"
-#include "register.h"
-#include "target.h"
-#include "armv4_5.h"
-#include "embeddedice.h"
-#include "etm.h"
-#include "log.h"
-#include "jtag.h"
-#include "arm_jtag.h"
-
-#include <stdlib.h>
-#include <string.h>
#if 0
#define _DEBUG_INSTRUCTION_EXECUTION_
#endif
-/* cli handling */
-int arm7tdmi_register_commands(struct command_context_s *cmd_ctx);
-
/* forward declarations */
int arm7tdmi_target_create(struct target_s *target,Jim_Interp *interp);
-int arm7tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
int arm7tdmi_quit(void);
/* target function declarations */
&& (target->debug_reason != DBG_REASON_SINGLESTEP))
{
scan_field_t fields[2];
- u8 databus[4];
- u8 breakpoint;
+ uint8_t databus[4];
+ uint8_t breakpoint;
- jtag_add_end_state(TAP_DRPAUSE);
+ jtag_set_end_state(TAP_DRPAUSE);
fields[0].tap = arm7_9->jtag_info.tap;
fields[0].num_bits = 1;
fields[0].out_value = NULL;
- fields[0].out_mask = NULL;
fields[0].in_value = &breakpoint;
- 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].tap = arm7_9->jtag_info.tap;
fields[1].num_bits = 32;
fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
fields[1].in_value = databus;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
- fields[1].in_handler = NULL;
- fields[1].in_handler_priv = NULL;
- if((retval = arm_jtag_scann(&arm7_9->jtag_info, 0x1)) != ERROR_OK)
+ if ((retval = arm_jtag_scann(&arm7_9->jtag_info, 0x1)) != ERROR_OK)
{
return retval;
}
arm_jtag_set_instr(&arm7_9->jtag_info, arm7_9->jtag_info.intest_instr, NULL);
- jtag_add_dr_scan(2, fields, TAP_DRPAUSE);
- if((retval = jtag_execute_queue()) != ERROR_OK)
+ jtag_add_dr_scan(2, fields, jtag_set_end_state(TAP_DRPAUSE));
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
{
return retval;
}
fields[1].in_value = NULL;
fields[1].out_value = databus;
- jtag_add_dr_scan(2, fields, TAP_DRPAUSE);
+ jtag_add_dr_scan(2, fields, jtag_set_end_state(TAP_DRPAUSE));
if (breakpoint & 1)
target->debug_reason = DBG_REASON_WATCHPOINT;
}
static int arm7tdmi_num_bits[]={1, 32};
-static __inline int arm7tdmi_clock_out_inner(arm_jtag_t *jtag_info, u32 out, int breakpoint)
+static __inline int arm7tdmi_clock_out_inner(arm_jtag_t *jtag_info, uint32_t out, int breakpoint)
{
- u32 values[2]={breakpoint, flip_u32(out, 32)};
+ uint32_t values[2]={breakpoint, flip_u32(out, 32)};
jtag_add_dr_out(jtag_info->tap,
2,
arm7tdmi_num_bits,
values,
- TAP_INVALID);
+ jtag_get_end_state());
- jtag_add_runtest(0, TAP_INVALID);
+ jtag_add_runtest(0, jtag_get_end_state());
return ERROR_OK;
}
/* put an instruction in the ARM7TDMI pipeline or write the data bus, and optionally read data */
-static __inline int arm7tdmi_clock_out(arm_jtag_t *jtag_info, u32 out, u32 *deprecated, int breakpoint)
+static __inline int arm7tdmi_clock_out(arm_jtag_t *jtag_info, uint32_t out, uint32_t *deprecated, int breakpoint)
{
- jtag_add_end_state(TAP_DRPAUSE);
+ jtag_set_end_state(TAP_DRPAUSE);
arm_jtag_scann(jtag_info, 0x1);
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
}
/* clock the target, reading the databus */
-int arm7tdmi_clock_data_in(arm_jtag_t *jtag_info, u32 *in)
+int arm7tdmi_clock_data_in(arm_jtag_t *jtag_info, uint32_t *in)
{
int retval = ERROR_OK;
scan_field_t fields[2];
- jtag_add_end_state(TAP_DRPAUSE);
- if((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
+ jtag_set_end_state(TAP_DRPAUSE);
+ if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
{
return retval;
}
fields[0].tap = jtag_info->tap;
fields[0].num_bits = 1;
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].tap = jtag_info->tap;
fields[1].num_bits = 32;
fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
- fields[1].in_value = NULL;
- fields[1].in_handler = arm_jtag_buf_to_u32_flip;
- fields[1].in_handler_priv = in;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
+ fields[1].in_value = (uint8_t *)in;
- jtag_add_dr_scan(2, fields, TAP_INVALID);
+ jtag_add_dr_scan(2, fields, jtag_get_end_state());
- jtag_add_runtest(0, TAP_INVALID);
+ jtag_add_callback(arm7flip32, (jtag_callback_data_t)in);
+
+ jtag_add_runtest(0, jtag_get_end_state());
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
{
- if((retval = jtag_execute_queue()) != ERROR_OK)
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
{
return retval;
}
return ERROR_OK;
}
+void arm_endianness(uint8_t *tmp, void *in, int size, int be, int flip)
+{
+ uint32_t readback = le_to_h_u32(tmp);
+ if (flip)
+ readback = flip_u32(readback, 32);
+ switch (size)
+ {
+ case 4:
+ if (be)
+ {
+ h_u32_to_be(((uint8_t*)in), readback);
+ } else
+ {
+ h_u32_to_le(((uint8_t*)in), readback);
+ }
+ break;
+ case 2:
+ if (be)
+ {
+ h_u16_to_be(((uint8_t*)in), readback & 0xffff);
+ } else
+ {
+ h_u16_to_le(((uint8_t*)in), readback & 0xffff);
+ }
+ break;
+ case 1:
+ *((uint8_t *)in)= readback & 0xff;
+ break;
+ }
+}
+
+static int arm7endianness(jtag_callback_data_t arg, jtag_callback_data_t size, jtag_callback_data_t be, jtag_callback_data_t captured)
+{
+ uint8_t *in = (uint8_t *)arg;
+ arm_endianness((uint8_t *)captured, in, (int)size, (int)be, 1);
+ return ERROR_OK;
+}
+
/* clock the target, and read the databus
* the *in pointer points to a buffer where elements of 'size' bytes
- * are stored in big (be==1) or little (be==0) endianness
+ * are stored in big (be == 1) or little (be == 0) endianness
*/
int arm7tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size, int be)
{
int retval = ERROR_OK;
scan_field_t fields[2];
- jtag_add_end_state(TAP_DRPAUSE);
- if((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
+ jtag_set_end_state(TAP_DRPAUSE);
+ if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
{
return retval;
}
fields[0].tap = jtag_info->tap;
fields[0].num_bits = 1;
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].tap = jtag_info->tap;
fields[1].num_bits = 32;
fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
- fields[1].in_value = NULL;
- switch (size)
- {
- case 4:
- fields[1].in_handler = (be) ? arm_jtag_buf_to_be32_flip : arm_jtag_buf_to_le32_flip;
- break;
- case 2:
- fields[1].in_handler = (be) ? arm_jtag_buf_to_be16_flip : arm_jtag_buf_to_le16_flip;
- break;
- case 1:
- fields[1].in_handler = arm_jtag_buf_to_8_flip;
- break;
- }
- fields[1].in_handler_priv = in;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
+ jtag_alloc_in_value32(&fields[1]);
+
+ jtag_add_dr_scan(2, fields, jtag_get_end_state());
- jtag_add_dr_scan(2, fields, TAP_INVALID);
+ jtag_add_callback4(arm7endianness, (jtag_callback_data_t)in, (jtag_callback_data_t)size, (jtag_callback_data_t)be, (jtag_callback_data_t)fields[1].in_value);
- jtag_add_runtest(0, TAP_INVALID);
+ jtag_add_runtest(0, jtag_get_end_state());
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
{
- if((retval = jtag_execute_queue()) != ERROR_OK)
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
{
return retval;
}
if (in)
{
- LOG_DEBUG("in: 0x%8.8x", *(u32*)in);
+ LOG_DEBUG("in: 0x%8.8x", *(uint32_t*)in);
}
else
{
return ERROR_OK;
}
-void arm7tdmi_change_to_arm(target_t *target, u32 *r0, u32 *pc)
+void arm7tdmi_change_to_arm(target_t *target, uint32_t *r0, uint32_t *pc)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
*pc -= 0xa;
}
-void arm7tdmi_read_core_regs(target_t *target, u32 mask, u32* core_regs[16])
+
+/* FIX!!! is this a potential performance bottleneck w.r.t. requiring too many
+ * roundtrips when jtag_execute_queue() has a large overhead(e.g. for USB)s?
+ *
+ * The solution is to arrange for a large out/in scan in this loop and
+ * and convert data afterwards.
+ */
+void arm7tdmi_read_core_regs(target_t *target, uint32_t mask, uint32_t* core_regs[16])
{
int i;
/* get pointers to arch-specific information */
for (i = 0; i <= 15; i++)
{
if (mask & (1 << i))
- /* nothing fetched, STM still in EXECUTE (1+i cycle) */
+ /* nothing fetched, STM still in EXECUTE (1 + i cycle) */
arm7tdmi_clock_data_in(jtag_info, core_regs[i]);
}
}
-void arm7tdmi_read_core_regs_target_buffer(target_t *target, u32 mask, void* buffer, int size)
+void arm7tdmi_read_core_regs_target_buffer(target_t *target, uint32_t mask, void* buffer, int size)
{
int i;
/* get pointers to arch-specific information */
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *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;
/* STMIA r0-15, [r0] at debug speed
* register values will start to appear on 4th DCLK
for (i = 0; i <= 15; i++)
{
- /* nothing fetched, STM still in EXECUTE (1+i cycle), read databus */
+ /* nothing fetched, STM still in EXECUTE (1 + i cycle), read databus */
if (mask & (1 << i))
{
switch (size)
}
}
-void arm7tdmi_read_xpsr(target_t *target, u32 *xpsr, int spsr)
+void arm7tdmi_read_xpsr(target_t *target, uint32_t *xpsr, int spsr)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7tdmi_clock_data_in(jtag_info, xpsr);
}
-void arm7tdmi_write_xpsr(target_t *target, u32 xpsr, int spsr)
+void arm7tdmi_write_xpsr(target_t *target, uint32_t xpsr, int spsr)
{
/* get pointers to arch-specific information */
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;
- LOG_DEBUG("xpsr: %8.8x, spsr: %i", xpsr, spsr);
+ LOG_DEBUG("xpsr: %8.8" PRIx32 ", spsr: %i", xpsr, spsr);
/* MSR1 fetched */
arm7tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr & 0xff, 0, 1, spsr), NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
}
-void arm7tdmi_write_xpsr_im8(target_t *target, u8 xpsr_im, int rot, int spsr)
+void arm7tdmi_write_xpsr_im8(target_t *target, uint8_t xpsr_im, int rot, int spsr)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
}
-void arm7tdmi_write_core_regs(target_t *target, u32 mask, u32 core_regs[16])
+void arm7tdmi_write_core_regs(target_t *target, uint32_t mask, uint32_t core_regs[16])
{
int i;
/* get pointers to arch-specific information */
for (i = 0; i <= 15; i++)
{
if (mask & (1 << i))
- /* nothing fetched, LDM still in EXECUTE (1+i cycle) */
+ /* nothing fetched, LDM still in EXECUTE (1 + i cycle) */
arm7tdmi_clock_out_inner(jtag_info, core_regs[i], 0);
}
arm7tdmi_clock_out_inner(jtag_info, ARMV4_5_NOP, 0);
}
-void arm7tdmi_load_word_regs(target_t *target, u32 mask)
+void arm7tdmi_load_word_regs(target_t *target, uint32_t mask)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7tdmi_clock_out(jtag_info, ARMV4_5_LDRB_IP(num, 0), NULL, 0);
}
-void arm7tdmi_store_word_regs(target_t *target, u32 mask)
+void arm7tdmi_store_word_regs(target_t *target, uint32_t mask)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7tdmi_clock_out(jtag_info, ARMV4_5_STRB_IP(num, 0), NULL, 0);
}
-void arm7tdmi_write_pc(target_t *target, u32 pc)
+void arm7tdmi_write_pc(target_t *target, uint32_t pc)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
int retval;
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
- if (!target->type->examined)
+ if (!target_was_examined(target))
{
/* get pointers to arch-specific information */
reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
- reg_cache_t *t=embeddedice_build_reg_cache(target, arm7_9);
- if (t==NULL)
+ reg_cache_t *t = embeddedice_build_reg_cache(target, arm7_9);
+ if (t == NULL)
return ERROR_FAIL;
(*cache_p) = t;
(*cache_p)->next = etm_build_reg_cache(target, jtag_info, arm7_9->etm_ctx);
arm7_9->etm_ctx->reg_cache = (*cache_p)->next;
}
- target->type->examined = 1;
+ target_set_examined(target);
}
- if ((retval=embeddedice_setup(target))!=ERROR_OK)
+ if ((retval = embeddedice_setup(target)) != ERROR_OK)
return retval;
- if ((retval=arm7_9_setup(target))!=ERROR_OK)
+ if ((retval = arm7_9_setup(target)) != ERROR_OK)
return retval;
if (arm7_9->etm_ctx)
{
- if ((retval=etm_setup(target))!=ERROR_OK)
+ if ((retval = etm_setup(target)) != ERROR_OK)
return retval;
}
return ERROR_OK;
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