/***************************************************************************
- * Copyright (C) 2006 by Dominic Rath *
+ * Copyright (C) 2006, 2007 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* This program is free software; you can redistribute it and/or modify *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+#ifdef HAVE_CONFIG_H
#include "config.h"
+#endif
+
+#include "replacements.h"
#include "xscale.h"
#include "target.h"
#include "armv4_5.h"
#include "arm_simulator.h"
+#include "arm_disassembler.h"
#include "log.h"
#include "jtag.h"
#include "binarybuffer.h"
#include "time_support.h"
#include "breakpoints.h"
+#include "fileio.h"
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
-#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
+
/* cli handling */
int xscale_register_commands(struct command_context_s *cmd_ctx);
int xscale_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
int xscale_quit();
-int xscale_arch_state(struct target_s *target, char *buf, int buf_size);
-enum target_state xscale_poll(target_t *target);
+int xscale_arch_state(struct target_s *target);
+int xscale_poll(target_t *target);
int xscale_halt(target_t *target);
int xscale_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution);
int xscale_step(struct target_s *target, int current, u32 address, int handle_breakpoints);
int xscale_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
int xscale_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
int xscale_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer);
+int xscale_checksum_memory(struct target_s *target, u32 address, u32 count, u32* checksum);
int xscale_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
int xscale_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
int xscale_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
void xscale_enable_watchpoints(struct target_s *target);
void xscale_enable_breakpoints(struct target_s *target);
+static int xscale_virt2phys(struct target_s *target, u32 virtual, u32 *physical);
+static int xscale_mmu(struct target_s *target, int *enabled);
+
+int xscale_read_trace(target_t *target);
target_type_t xscale_target =
{
.poll = xscale_poll,
.arch_state = xscale_arch_state,
+ .target_request_data = NULL,
+
.halt = xscale_halt,
.resume = xscale_resume,
.step = xscale_step,
.prepare_reset_halt = xscale_prepare_reset_halt,
.get_gdb_reg_list = armv4_5_get_gdb_reg_list,
-
+
.read_memory = xscale_read_memory,
.write_memory = xscale_write_memory,
.bulk_write_memory = xscale_bulk_write_memory,
+ .checksum_memory = xscale_checksum_memory,
.run_algorithm = armv4_5_run_algorithm,
-
+
.add_breakpoint = xscale_add_breakpoint,
.remove_breakpoint = xscale_remove_breakpoint,
.add_watchpoint = xscale_add_watchpoint,
.register_commands = xscale_register_commands,
.target_command = xscale_target_command,
.init_target = xscale_init_target,
- .quit = xscale_quit
+ .quit = xscale_quit,
+
+ .virt2phys = xscale_virt2phys,
+ .mmu = xscale_mmu
};
char* xscale_reg_list[] =
"XSCALE_DBR1",
"XSCALE_DBCON",
"XSCALE_TBREG",
- "XSCALE_CHKPT0",
+ "XSCALE_CHKPT0",
"XSCALE_CHKPT1",
"XSCALE_DCSR",
"XSCALE_TX",
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
{
+ ERROR("target isn't an XScale target");
return -1;
}
-
+
if (xscale->common_magic != XSCALE_COMMON_MAGIC)
{
+ ERROR("target isn't an XScale target");
return -1;
}
-
+
*armv4_5_p = armv4_5;
*xscale_p = xscale;
-
+
return ERROR_OK;
}
int xscale_jtag_set_instr(int chain_pos, u32 new_instr)
{
jtag_device_t *device = jtag_get_device(chain_pos);
-
+
if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
{
scan_field_t field;
-
+
field.device = chain_pos;
field.num_bits = device->ir_length;
field.out_value = calloc(CEIL(field.num_bits, 8), 1);
buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
field.out_mask = NULL;
field.in_value = NULL;
- field.in_check_value = device->expected;
- field.in_check_mask = device->expected_mask;
- field.in_handler = NULL;
- field.in_handler_priv = NULL;
-
+ jtag_set_check_value(&field, device->expected, device->expected_mask, NULL);
+
jtag_add_ir_scan(1, &field, -1);
-
+
free(field.out_value);
}
-
+
return ERROR_OK;
}
default:
WARNING("unhandled JTAG event");
}
-
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
int retval;
-
+
scan_field_t fields[3];
u8 field0 = 0x0;
u8 field0_check_value = 0x2;
jtag_add_end_state(TAP_PD);
xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.dcsr);
-
+
buf_set_u32(&field0, 1, 1, xscale->hold_rst);
buf_set_u32(&field0, 2, 1, xscale->external_debug_break);
-
+
fields[0].device = xscale->jtag_info.chain_pos;
fields[0].num_bits = 3;
fields[0].out_value = &field0;
fields[0].out_mask = NULL;
fields[0].in_value = NULL;
- fields[0].in_check_value = &field0_check_value;
- fields[0].in_check_mask = &field0_check_mask;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+0, &field0_check_value, &field0_check_mask, NULL);
+
fields[1].device = xscale->jtag_info.chain_pos;
fields[1].num_bits = 32;
fields[1].out_value = NULL;
fields[2].out_value = &field2;
fields[2].out_mask = NULL;
fields[2].in_value = NULL;
- fields[2].in_check_value = &field2_check_value;
- fields[2].in_check_mask = &field2_check_mask;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+2, &field2_check_value, &field2_check_mask, NULL);
+
jtag_add_dr_scan(3, fields, -1);
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
ERROR("JTAG error while reading DCSR");
- exit(-1);
+ return retval;
}
-
+
xscale->reg_cache->reg_list[XSCALE_DCSR].dirty = 0;
xscale->reg_cache->reg_list[XSCALE_DCSR].valid = 1;
-
+
/* write the register with the value we just read
* on this second pass, only the first bit of field0 is guaranteed to be 0)
*/
field0_check_mask = 0x1;
fields[1].out_value = xscale->reg_cache->reg_list[XSCALE_DCSR].value;
fields[1].in_value = NULL;
-
+
jtag_add_end_state(TAP_RTI);
-
+
jtag_add_dr_scan(3, fields, -1);
-
- return ERROR_OK;
+
+ /* DANGER!!! this must be here. It will make sure that the arguments
+ * to jtag_set_check_value() does not go out of scope! */
+ return jtag_execute_queue();
}
int xscale_receive(target_t *target, u32 *buffer, int num_words)
{
+ if (num_words==0)
+ return ERROR_INVALID_ARGUMENTS;
+
+ int retval=ERROR_OK;
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
enum tap_state path[3];
scan_field_t fields[3];
-
+
u8 *field0 = malloc(num_words * 1);
u8 field0_check_value = 0x2;
u8 field0_check_mask = 0x6;
u8 field2_check_mask = 0x1;
int words_done = 0;
int words_scheduled = 0;
-
+
int i;
- int retval;
path[0] = TAP_SDS;
path[1] = TAP_CD;
path[2] = TAP_SD;
-
+
fields[0].device = xscale->jtag_info.chain_pos;
fields[0].num_bits = 3;
fields[0].out_value = NULL;
fields[0].out_mask = NULL;
/* fields[0].in_value = field0; */
- fields[0].in_check_value = &field0_check_value;
- fields[0].in_check_mask = &field0_check_mask;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+0, &field0_check_value, &field0_check_mask, NULL);
+
fields[1].device = xscale->jtag_info.chain_pos;
fields[1].num_bits = 32;
fields[1].out_value = NULL;
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
+
+
fields[2].device = xscale->jtag_info.chain_pos;
fields[2].num_bits = 1;
fields[2].out_value = NULL;
fields[2].out_mask = NULL;
fields[2].in_value = NULL;
- fields[2].in_check_value = &field2_check_value;
- fields[2].in_check_mask = &field2_check_mask;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
+ jtag_set_check_value(fields+2, &field2_check_value, &field2_check_mask, NULL);
jtag_add_end_state(TAP_RTI);
xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.dbgtx);
jtag_add_runtest(1, -1);
-
+
/* repeat until all words have been collected */
+ int attempts=0;
while (words_done < num_words)
{
/* schedule reads */
fields[0].in_value = &field0[i];
fields[1].in_handler = buf_to_u32_handler;
fields[1].in_handler_priv = (u8*)&field1[i];
-
+
jtag_add_pathmove(3, path);
jtag_add_dr_scan(3, fields, TAP_RTI);
words_scheduled++;
}
-
+
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
ERROR("JTAG error while receiving data from debug handler");
- exit(-1);
+ break;
}
-
+
/* examine results */
for (i = words_done; i < num_words; i++)
{
words_scheduled--;
}
}
+ if (words_scheduled==0)
+ {
+ if (attempts++==1000)
+ {
+ ERROR("Failed to receiving data from debug handler after 1000 attempts");
+ retval=ERROR_JTAG_QUEUE_FAILED;
+ break;
+ }
+ }
+
words_done += words_scheduled;
}
-
+
for (i = 0; i < num_words; i++)
*(buffer++) = buf_get_u32((u8*)&field1[i], 0, 32);
-
+
free(field1);
-
- return ERROR_OK;
+
+ return retval;
}
int xscale_read_tx(target_t *target, int consume)
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
enum tap_state path[3];
-
+ enum tap_state noconsume_path[9];
+
int retval;
struct timeval timeout, now;
-
+
scan_field_t fields[3];
u8 field0_in = 0x0;
u8 field0_check_value = 0x2;
u8 field0_check_mask = 0x6;
u8 field2_check_value = 0x0;
u8 field2_check_mask = 0x1;
-
+
jtag_add_end_state(TAP_RTI);
-
+
xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.dbgtx);
-
+
path[0] = TAP_SDS;
path[1] = TAP_CD;
path[2] = TAP_SD;
+
+ noconsume_path[0] = TAP_SDS;
+ noconsume_path[1] = TAP_CD;
+ noconsume_path[2] = TAP_E1D;
+ noconsume_path[3] = TAP_PD;
+ noconsume_path[4] = TAP_E2D;
+ noconsume_path[5] = TAP_UD;
+ noconsume_path[6] = TAP_SDS;
+ noconsume_path[7] = TAP_CD;
+ noconsume_path[8] = TAP_SD;
fields[0].device = xscale->jtag_info.chain_pos;
fields[0].num_bits = 3;
fields[0].out_value = NULL;
fields[0].out_mask = NULL;
fields[0].in_value = &field0_in;
- fields[0].in_check_value = &field0_check_value;
- fields[0].in_check_mask = &field0_check_mask;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+0, &field0_check_value, &field0_check_mask, NULL);
+
fields[1].device = xscale->jtag_info.chain_pos;
fields[1].num_bits = 32;
fields[1].out_value = NULL;
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
+
+
fields[2].device = xscale->jtag_info.chain_pos;
fields[2].num_bits = 1;
fields[2].out_value = NULL;
fields[2].out_mask = NULL;
fields[2].in_value = NULL;
- fields[2].in_check_value = &field2_check_value;
- fields[2].in_check_mask = &field2_check_mask;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+2, &field2_check_value, &field2_check_mask, NULL);
+
gettimeofday(&timeout, NULL);
timeval_add_time(&timeout, 5, 0);
-
+
do
{
/* if we want to consume the register content (i.e. clear TX_READY),
if (consume)
jtag_add_pathmove(3, path);
else
- jtag_add_statemove(TAP_PD);
-
+ jtag_add_pathmove(sizeof(noconsume_path)/sizeof(*noconsume_path), noconsume_path);
+
jtag_add_dr_scan(3, fields, TAP_RTI);
-
+
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
ERROR("JTAG error while reading TX");
- exit(-1);
+ return ERROR_TARGET_TIMEOUT;
}
-
+
gettimeofday(&now, NULL);
- if ((now.tv_sec > timeout.tv_sec) && (now.tv_usec > timeout.tv_usec))
+ if ((now.tv_sec > timeout.tv_sec) || ((now.tv_sec == timeout.tv_sec)&& (now.tv_usec > timeout.tv_usec)))
{
ERROR("time out reading TX register");
return ERROR_TARGET_TIMEOUT;
}
} while ((!(field0_in & 1)) && consume);
-
+
if (!(field0_in & 1))
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
-
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
int retval;
struct timeval timeout, now;
-
+
scan_field_t fields[3];
u8 field0_out = 0x0;
u8 field0_in = 0x0;
u8 field2 = 0x0;
u8 field2_check_value = 0x0;
u8 field2_check_mask = 0x1;
-
+
jtag_add_end_state(TAP_RTI);
-
+
xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.dbgrx);
-
+
fields[0].device = xscale->jtag_info.chain_pos;
fields[0].num_bits = 3;
fields[0].out_value = &field0_out;
fields[0].out_mask = NULL;
fields[0].in_value = &field0_in;
- fields[0].in_check_value = &field0_check_value;
- fields[0].in_check_mask = &field0_check_mask;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+0, &field0_check_value, &field0_check_mask, NULL);
+
fields[1].device = xscale->jtag_info.chain_pos;
fields[1].num_bits = 32;
fields[1].out_value = xscale->reg_cache->reg_list[XSCALE_RX].value;
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
+
+
fields[2].device = xscale->jtag_info.chain_pos;
fields[2].num_bits = 1;
fields[2].out_value = &field2;
fields[2].out_mask = NULL;
fields[2].in_value = NULL;
- fields[2].in_check_value = &field2_check_value;
- fields[2].in_check_mask = &field2_check_mask;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+2, &field2_check_value, &field2_check_mask, NULL);
+
gettimeofday(&timeout, NULL);
timeval_add_time(&timeout, 5, 0);
-
+
/* poll until rx_read is low */
+ DEBUG("polling RX");
do
{
- DEBUG("polling RX");
jtag_add_dr_scan(3, fields, TAP_RTI);
-
+
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
ERROR("JTAG error while writing RX");
- exit(-1);
+ return retval;
}
-
+
gettimeofday(&now, NULL);
- if ((now.tv_sec > timeout.tv_sec) && (now.tv_usec > timeout.tv_usec))
+ if ((now.tv_sec > timeout.tv_sec) || ((now.tv_sec == timeout.tv_sec)&& (now.tv_usec > timeout.tv_usec)))
{
ERROR("time out writing RX register");
return ERROR_TARGET_TIMEOUT;
}
} while (field0_in & 1);
-
+
/* set rx_valid */
field2 = 0x1;
jtag_add_dr_scan(3, fields, TAP_RTI);
-
+
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
ERROR("JTAG error while writing RX");
- exit(-1);
+ return retval;
}
-
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
int retval;
-
+
int done_count = 0;
u8 output[4] = {0, 0, 0, 0};
-
+
scan_field_t fields[3];
u8 field0_out = 0x0;
- u8 field0_in = 0x0;
u8 field0_check_value = 0x2;
u8 field0_check_mask = 0x6;
u8 field2 = 0x1;
u8 field2_check_value = 0x0;
u8 field2_check_mask = 0x1;
-
+
jtag_add_end_state(TAP_RTI);
-
+
xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.dbgrx);
-
+
fields[0].device = xscale->jtag_info.chain_pos;
fields[0].num_bits = 3;
fields[0].out_value = &field0_out;
fields[0].out_mask = NULL;
- fields[0].in_value = &field0_in;
- fields[0].in_check_value = &field0_check_value;
- fields[0].in_check_mask = &field0_check_mask;
fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
+ if (!xscale->fast_memory_access)
+ {
+ jtag_set_check_value(fields+0, &field0_check_value, &field0_check_mask, NULL);
+ }
+
fields[1].device = xscale->jtag_info.chain_pos;
fields[1].num_bits = 32;
fields[1].out_value = output;
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
+
+
fields[2].device = xscale->jtag_info.chain_pos;
fields[2].num_bits = 1;
fields[2].out_value = &field2;
fields[2].out_mask = NULL;
fields[2].in_value = NULL;
- fields[2].in_check_value = &field2_check_value;
- fields[2].in_check_mask = &field2_check_mask;
fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
+ if (!xscale->fast_memory_access)
+ {
+ jtag_set_check_value(fields+2, &field2_check_value, &field2_check_mask, NULL);
+ }
- while (done_count++ < count)
+ if (size==4)
{
- /* extract sized element from target-endian buffer, and put it
- * into little-endian output buffer
- */
- switch (size)
+ int endianness = target->endianness;
+ while (done_count++ < count)
{
- case 4:
- buf_set_u32(output, 0, 32, target_buffer_get_u32(target, buffer));
- break;
- case 2:
- buf_set_u32(output, 0, 32, target_buffer_get_u16(target, buffer));
- break;
- case 1:
- output[0] = *buffer;
- break;
- default:
- ERROR("BUG: size neither 4, 2 nor 1");
- exit(-1);
+ if (endianness == TARGET_LITTLE_ENDIAN)
+ {
+ output[0]=buffer[0];
+ output[1]=buffer[1];
+ output[2]=buffer[2];
+ output[3]=buffer[3];
+ } else
+ {
+ output[0]=buffer[3];
+ output[1]=buffer[2];
+ output[2]=buffer[1];
+ output[3]=buffer[0];
+ }
+ jtag_add_dr_scan(3, fields, TAP_RTI);
+ buffer += size;
}
+
+ } else
+ {
+ while (done_count++ < count)
+ {
+ /* extract sized element from target-endian buffer, and put it
+ * into little-endian output buffer
+ */
+ switch (size)
+ {
+ case 2:
+ buf_set_u32(output, 0, 32, target_buffer_get_u16(target, buffer));
+ break;
+ case 1:
+ output[0] = *buffer;
+ break;
+ default:
+ ERROR("BUG: size neither 4, 2 nor 1");
+ exit(-1);
+ }
- jtag_add_dr_scan(3, fields, TAP_RTI);
- buffer += size;
+ jtag_add_dr_scan(3, fields, TAP_RTI);
+ buffer += size;
+ }
+
}
-
+
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
ERROR("JTAG error while sending data to debug handler");
- exit(-1);
+ return retval;
}
-
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
buf_set_u32(xscale->reg_cache->reg_list[XSCALE_RX].value, 0, 32, value);
return xscale_write_rx(target);
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
int retval;
-
+
scan_field_t fields[3];
u8 field0 = 0x0;
u8 field0_check_value = 0x2;
u8 field2 = 0x0;
u8 field2_check_value = 0x0;
u8 field2_check_mask = 0x1;
-
+
if (hold_rst != -1)
xscale->hold_rst = hold_rst;
-
+
if (ext_dbg_brk != -1)
xscale->external_debug_break = ext_dbg_brk;
jtag_add_end_state(TAP_RTI);
xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.dcsr);
-
+
buf_set_u32(&field0, 1, 1, xscale->hold_rst);
buf_set_u32(&field0, 2, 1, xscale->external_debug_break);
-
+
fields[0].device = xscale->jtag_info.chain_pos;
fields[0].num_bits = 3;
fields[0].out_value = &field0;
fields[0].out_mask = NULL;
fields[0].in_value = NULL;
- fields[0].in_check_value = &field0_check_value;
- fields[0].in_check_mask = &field0_check_mask;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+0, &field0_check_value, &field0_check_mask, NULL);
+
fields[1].device = xscale->jtag_info.chain_pos;
fields[1].num_bits = 32;
fields[1].out_value = xscale->reg_cache->reg_list[XSCALE_DCSR].value;
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
+
+
fields[2].device = xscale->jtag_info.chain_pos;
fields[2].num_bits = 1;
fields[2].out_value = &field2;
fields[2].out_mask = NULL;
fields[2].in_value = NULL;
- fields[2].in_check_value = &field2_check_value;
- fields[2].in_check_mask = &field2_check_mask;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
+ jtag_set_check_value(fields+2, &field2_check_value, &field2_check_mask, NULL);
+
jtag_add_dr_scan(3, fields, -1);
-
+
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
ERROR("JTAG error while writing DCSR");
- exit(-1);
+ return retval;
}
-
+
xscale->reg_cache->reg_list[XSCALE_DCSR].dirty = 0;
xscale->reg_cache->reg_list[XSCALE_DCSR].valid = 1;
-
+
return ERROR_OK;
}
u8 packet[4];
u8 cmd;
int word;
-
+
scan_field_t fields[2];
DEBUG("loading miniIC at 0x%8.8x", va);
jtag_add_end_state(TAP_RTI);
xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.ldic); /* LDIC */
-
+
/* CMD is b010 for Main IC and b011 for Mini IC */
if (mini)
buf_set_u32(&cmd, 0, 3, 0x3);
else
buf_set_u32(&cmd, 0, 3, 0x2);
-
+
buf_set_u32(&cmd, 3, 3, 0x0);
-
+
/* virtual address of desired cache line */
buf_set_u32(packet, 0, 27, va >> 5);
-
+
fields[0].device = xscale->jtag_info.chain_pos;
fields[0].num_bits = 6;
fields[0].out_value = &cmd;
fields[1].in_check_mask = NULL;
fields[1].in_handler = NULL;
fields[1].in_handler_priv = NULL;
-
+
jtag_add_dr_scan(2, fields, -1);
fields[0].num_bits = 32;
fields[0].out_value = packet;
-
+
fields[1].num_bits = 1;
fields[1].out_value = &cmd;
-
+
for (word = 0; word < 8; word++)
{
buf_set_u32(packet, 0, 32, buffer[word]);
cmd = parity(*((u32*)packet));
jtag_add_dr_scan(2, fields, -1);
}
-
+
jtag_execute_queue();
-
+
return ERROR_OK;
}
xscale_common_t *xscale = armv4_5->arch_info;
u8 packet[4];
u8 cmd;
-
+
scan_field_t fields[2];
jtag_add_end_state(TAP_RTI);
xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.ldic); /* LDIC */
-
+
/* CMD for invalidate IC line b000, bits [6:4] b000 */
buf_set_u32(&cmd, 0, 6, 0x0);
-
+
/* virtual address of desired cache line */
buf_set_u32(packet, 0, 27, va >> 5);
-
+
fields[0].device = xscale->jtag_info.chain_pos;
fields[0].num_bits = 6;
fields[0].out_value = &cmd;
fields[1].in_check_mask = NULL;
fields[1].in_handler = NULL;
fields[1].in_handler_priv = NULL;
-
+
jtag_add_dr_scan(2, fields, -1);
-
+
return ERROR_OK;
}
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
int i;
-
+
u32 low_reset_branch, high_reset_branch;
for (i = 1; i < 8; i++)
}
}
}
-
+
/* calculate branches to debug handler */
low_reset_branch = (xscale->handler_address + 0x20 - 0x0 - 0x8) >> 2;
high_reset_branch = (xscale->handler_address + 0x20 - 0xffff0000 - 0x8) >> 2;
-
+
xscale->low_vectors[0] = ARMV4_5_B((low_reset_branch & 0xffffff), 0);
xscale->high_vectors[0] = ARMV4_5_B((high_reset_branch & 0xffffff), 0);
-
+
/* invalidate and load exception vectors in mini i-cache */
xscale_invalidate_ic_line(target, 0x0);
xscale_invalidate_ic_line(target, 0xffff0000);
-
+
xscale_load_ic(target, 1, 0x0, xscale->low_vectors);
xscale_load_ic(target, 1, 0xffff0000, xscale->high_vectors);
-
+
return ERROR_OK;
}
-int xscale_arch_state(struct target_s *target, char *buf, int buf_size)
+int xscale_arch_state(struct target_s *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
- char *state[] =
+
+ char *state[] =
{
"disabled", "enabled"
};
-
+
char *arch_dbg_reason[] =
{
"", "\n(processor reset)", "\n(trace buffer full)"
};
-
+
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"
+
+ USER("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"
"%s",
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[xscale->armv4_5_mmu.mmu_enabled],
- state[xscale->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled],
+ state[xscale->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled],
state[xscale->armv4_5_mmu.armv4_5_cache.i_cache_enabled],
arch_dbg_reason[xscale->arch_debug_reason]);
-
+
return ERROR_OK;
}
-enum target_state xscale_poll(target_t *target)
+int xscale_poll(target_t *target)
{
- int retval;
+ int retval=ERROR_OK;
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
if ((target->state == TARGET_RUNNING) || (target->state == TARGET_DEBUG_RUNNING))
{
+ enum target_state previous_state = target->state;
if ((retval = xscale_read_tx(target, 0)) == ERROR_OK)
{
+
/* there's data to read from the tx register, we entered debug state */
xscale->handler_running = 1;
-
- /* process debug entry, fetching current mode regs */
- if ((retval = xscale_debug_entry(target)) != ERROR_OK)
- return retval;
-
- /* if target was running, signal that we halted
- * otherwise we reentered from debug execution */
- if (target->state == TARGET_RUNNING)
- target_call_event_callbacks(target, TARGET_EVENT_HALTED);
- else
- target_call_event_callbacks(target, TARGET_EVENT_DEBUG_HALTED);
target->state = TARGET_HALTED;
+
+ /* process debug entry, fetching current mode regs */
+ retval = xscale_debug_entry(target);
}
else if (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
{
- ERROR("error while polling TX register");
- exit(-1);
+ USER("error while polling TX register, reset CPU");
+ /* here we "lie" so GDB won't get stuck and a reset can be perfomed */
+ target->state = TARGET_HALTED;
}
+
+ /* debug_entry could have overwritten target state (i.e. immediate resume)
+ * don't signal event handlers in that case
+ */
+ if (target->state != TARGET_HALTED)
+ return ERROR_OK;
+
+ /* if target was running, signal that we halted
+ * otherwise we reentered from debug execution */
+ if (previous_state == TARGET_RUNNING)
+ target_call_event_callbacks(target, TARGET_EVENT_HALTED);
+ else
+ target_call_event_callbacks(target, TARGET_EVENT_DEBUG_HALTED);
}
-
- return target->state;
+
+ return retval;
}
int xscale_debug_entry(target_t *target)
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
u32 pc;
- u32 *buffer = malloc(4 * 10);
+ u32 buffer[10];
int i;
-
+
u32 moe;
-
+
/* clear external dbg break (will be written on next DCSR read) */
xscale->external_debug_break = 0;
xscale_read_dcsr(target);
-
+
/* get r0, pc, r1 to r7 and cpsr */
xscale_receive(target, buffer, 10);
-
+
/* move r0 from buffer to register cache */
buf_set_u32(armv4_5->core_cache->reg_list[0].value, 0, 32, buffer[0]);
armv4_5->core_cache->reg_list[15].dirty = 1;
armv4_5->core_cache->reg_list[15].valid = 1;
DEBUG("r0: 0x%8.8x", buffer[0]);
-
+
/* move pc from buffer to register cache */
buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, buffer[1]);
armv4_5->core_cache->reg_list[15].dirty = 1;
armv4_5->core_cache->reg_list[15].valid = 1;
DEBUG("pc: 0x%8.8x", buffer[1]);
-
+
/* move data from buffer to register cache */
for (i = 1; i <= 7; i++)
{
armv4_5->core_cache->reg_list[i].valid = 1;
DEBUG("r%i: 0x%8.8x", i, buffer[i + 1]);
}
-
+
buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32, buffer[9]);
armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
DEBUG("cpsr: 0x%8.8x", buffer[9]);
-
+
armv4_5->core_mode = buffer[9] & 0x1f;
if (armv4_5_mode_to_number(armv4_5->core_mode) == -1)
{
return ERROR_TARGET_FAILURE;
}
DEBUG("target entered debug state in %s mode", armv4_5_mode_strings[armv4_5_mode_to_number(armv4_5->core_mode)]);
-
+
if (buffer[9] & 0x20)
armv4_5->core_state = ARMV4_5_STATE_THUMB;
else
armv4_5->core_state = ARMV4_5_STATE_ARM;
-
+
/* get banked registers, r8 to r14, and spsr if not in USR/SYS mode */
if ((armv4_5->core_mode != ARMV4_5_MODE_USR) && (armv4_5->core_mode != ARMV4_5_MODE_SYS))
{
/* r8 to r14, but no spsr */
xscale_receive(target, buffer, 7);
}
-
+
/* move data from buffer to register cache */
for (i = 8; i <= 14; i++)
{
ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, i).dirty = 0;
ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, i).valid = 1;
}
-
+
/* examine debug reason */
xscale_read_dcsr(target);
moe = buf_get_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 2, 3);
-
+
/* stored PC (for calculating fixup) */
pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
-
+
switch (moe)
{
case 0x0: /* Processor reset */
exit(-1);
break;
}
-
+
/* apply PC fixup */
- buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, pc);
-
+ buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, pc);
+
/* on the first debug entry, identify cache type */
if (xscale->armv4_5_mmu.armv4_5_cache.ctype == -1)
{
u32 cache_type_reg;
-
+
/* read cp15 cache type register */
xscale_get_reg(&xscale->reg_cache->reg_list[XSCALE_CACHETYPE]);
cache_type_reg = buf_get_u32(xscale->reg_cache->reg_list[XSCALE_CACHETYPE].value, 0, 32);
-
+
armv4_5_identify_cache(cache_type_reg, &xscale->armv4_5_mmu.armv4_5_cache);
}
-
+
/* examine MMU and Cache settings */
/* read cp15 control register */
xscale_get_reg(&xscale->reg_cache->reg_list[XSCALE_CTRL]);
xscale->armv4_5_mmu.mmu_enabled = (xscale->cp15_control_reg & 0x1U) ? 1 : 0;
xscale->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = (xscale->cp15_control_reg & 0x4U) ? 1 : 0;
xscale->armv4_5_mmu.armv4_5_cache.i_cache_enabled = (xscale->cp15_control_reg & 0x1000U) ? 1 : 0;
-
+
+ /* tracing enabled, read collected trace data */
+ if (xscale->trace.buffer_enabled)
+ {
+ xscale_read_trace(target);
+ xscale->trace.buffer_fill--;
+
+ /* resume if we're still collecting trace data */
+ if ((xscale->arch_debug_reason == XSCALE_DBG_REASON_TB_FULL)
+ && (xscale->trace.buffer_fill > 0))
+ {
+ xscale_resume(target, 1, 0x0, 1, 0);
+ }
+ else
+ {
+ xscale->trace.buffer_enabled = 0;
+ }
+ }
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
DEBUG("target->state: %s", target_state_strings[target->state]);
-
+
if (target->state == TARGET_HALTED)
{
WARNING("target was already halted");
return ERROR_TARGET_ALREADY_HALTED;
- }
+ }
else if (target->state == TARGET_UNKNOWN)
{
/* this must not happen for a xscale target */
ERROR("target was in unknown state when halt was requested");
- exit(-1);
+ return ERROR_TARGET_INVALID;
}
else if (target->state == TARGET_RESET)
{
DEBUG("target->state == TARGET_RESET");
-
- /* clear TRST */
- jtag_add_reset(0, -1);
}
else
{
/* assert external dbg break */
xscale->external_debug_break = 1;
xscale_read_dcsr(target);
-
+
target->debug_reason = DBG_REASON_DBGRQ;
}
-
+
return ERROR_OK;
}
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale= armv4_5->arch_info;
reg_t *ibcr0 = &xscale->reg_cache->reg_list[XSCALE_IBCR0];
-
+
if (xscale->ibcr0_used)
{
breakpoint_t *ibcr0_bp = breakpoint_find(target, buf_get_u32(ibcr0->value, 0, 32) & 0xfffffffe);
-
+
if (ibcr0_bp)
{
xscale_unset_breakpoint(target, ibcr0_bp);
exit(-1);
}
}
-
+
xscale_set_reg_u32(ibcr0, next_pc | 0x1);
-
+
return ERROR_OK;
}
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale= armv4_5->arch_info;
reg_t *ibcr0 = &xscale->reg_cache->reg_list[XSCALE_IBCR0];
-
+
xscale_set_reg_u32(ibcr0, 0x0);
-
+
return ERROR_OK;
}
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale= armv4_5->arch_info;
breakpoint_t *breakpoint = target->breakpoints;
-
+
u32 current_pc;
-
+
int retval;
int i;
-
+
DEBUG("-");
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
if (!debug_execution)
{
target_free_all_working_areas(target);
}
-
+
/* update vector tables */
xscale_update_vectors(target);
-
+
/* current = 1: continue on current pc, otherwise continue at <address> */
if (!current)
buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, address);
current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
-
+
/* if we're at the reset vector, we have to simulate the branch */
if (current_pc == 0x0)
{
arm_simulate_step(target, NULL);
current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
}
-
+
/* the front-end may request us not to handle breakpoints */
if (handle_breakpoints)
{
if ((breakpoint = breakpoint_find(target, buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32))))
{
u32 next_pc;
-
+
/* there's a breakpoint at the current PC, we have to step over it */
DEBUG("unset breakpoint at 0x%8.8x", breakpoint->address);
xscale_unset_breakpoint(target, breakpoint);
-
+
/* calculate PC of next instruction */
if ((retval = arm_simulate_step(target, &next_pc)) != ERROR_OK)
{
target_read_u32(target, current_pc, ¤t_opcode);
ERROR("BUG: couldn't calculate PC of next instruction, current opcode was 0x%8.8x", current_opcode);
}
-
+
DEBUG("enable single-step");
xscale_enable_single_step(target, next_pc);
-
+
/* restore banked registers */
xscale_restore_context(target);
-
+
/* send resume request (command 0x30 or 0x31)
* clean the trace buffer if it is to be enabled (0x62) */
- if (xscale->trace_buffer_enabled)
+ if (xscale->trace.buffer_enabled)
{
xscale_send_u32(target, 0x62);
xscale_send_u32(target, 0x31);
}
else
xscale_send_u32(target, 0x30);
-
+
/* send CPSR */
xscale_send_u32(target, buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32));
DEBUG("writing cpsr with value 0x%8.8x", buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32));
-
+
for (i = 7; i >= 0; i--)
{
/* send register */
/* send PC */
xscale_send_u32(target, buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
DEBUG("writing PC with value 0x%8.8x", buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
-
+
/* wait for and process debug entry */
xscale_debug_entry(target);
-
+
DEBUG("disable single-step");
xscale_disable_single_step(target);
-
+
DEBUG("set breakpoint at 0x%8.8x", breakpoint->address);
xscale_set_breakpoint(target, breakpoint);
}
}
-
+
/* enable any pending breakpoints and watchpoints */
xscale_enable_breakpoints(target);
xscale_enable_watchpoints(target);
-
+
/* restore banked registers */
xscale_restore_context(target);
-
+
/* send resume request (command 0x30 or 0x31)
* clean the trace buffer if it is to be enabled (0x62) */
- if (xscale->trace_buffer_enabled)
+ if (xscale->trace.buffer_enabled)
{
xscale_send_u32(target, 0x62);
xscale_send_u32(target, 0x31);
}
else
xscale_send_u32(target, 0x30);
-
+
/* send CPSR */
xscale_send_u32(target, buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32));
DEBUG("writing cpsr with value 0x%8.8x", buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32));
-
+
for (i = 7; i >= 0; i--)
{
/* send register */
/* send PC */
xscale_send_u32(target, buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
DEBUG("writing PC with value 0x%8.8x", buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
-
+
target->debug_reason = DBG_REASON_NOTHALTED;
-
+
if (!debug_execution)
{
/* registers are now invalid */
target->state = TARGET_DEBUG_RUNNING;
target_call_event_callbacks(target, TARGET_EVENT_DEBUG_RESUMED);
}
-
+
DEBUG("target resumed");
-
+
xscale->handler_running = 1;
-
+
return ERROR_OK;
}
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
breakpoint_t *breakpoint = target->breakpoints;
-
+
u32 current_pc, next_pc;
int i;
int retval;
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
/* current = 1: continue on current pc, otherwise continue at <address> */
if (!current)
buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, address);
-
+
current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
-
+
/* if we're at the reset vector, we have to simulate the step */
if (current_pc == 0x0)
{
arm_simulate_step(target, NULL);
current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
-
+
target->debug_reason = DBG_REASON_SINGLESTEP;
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
-
+
return ERROR_OK;
}
-
+
/* the front-end may request us not to handle breakpoints */
if (handle_breakpoints)
if ((breakpoint = breakpoint_find(target, buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32))))
{
xscale_unset_breakpoint(target, breakpoint);
}
-
+
target->debug_reason = DBG_REASON_SINGLESTEP;
/* calculate PC of next instruction */
target_read_u32(target, current_pc, ¤t_opcode);
ERROR("BUG: couldn't calculate PC of next instruction, current opcode was 0x%8.8x", current_opcode);
}
-
+
DEBUG("enable single-step");
xscale_enable_single_step(target, next_pc);
-
+
/* restore banked registers */
xscale_restore_context(target);
-
+
/* send resume request (command 0x30 or 0x31)
* clean the trace buffer if it is to be enabled (0x62) */
- if (xscale->trace_buffer_enabled)
+ if (xscale->trace.buffer_enabled)
{
xscale_send_u32(target, 0x62);
xscale_send_u32(target, 0x31);
}
else
xscale_send_u32(target, 0x30);
-
+
/* send CPSR */
xscale_send_u32(target, buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32));
DEBUG("writing cpsr with value 0x%8.8x", buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32));
-
+
for (i = 7; i >= 0; i--)
{
/* send register */
/* registers are now invalid */
armv4_5_invalidate_core_regs(target);
-
+
/* wait for and process debug entry */
xscale_debug_entry(target);
-
+
DEBUG("disable single-step");
xscale_disable_single_step(target);
-
+
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
if (breakpoint)
{
xscale_set_breakpoint(target, breakpoint);
}
-
+
DEBUG("target stepped");
return ERROR_OK;
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
DEBUG("target->state: %s", target_state_strings[target->state]);
-
- /* if the handler isn't installed yet, we have to assert TRST, too */
- if (!xscale->handler_installed)
- {
- jtag_add_reset(1, 1);
- }
- else
- jtag_add_reset(-1, 1);
-
+
+ /* select DCSR instruction (set endstate to R-T-I to ensure we don't
+ * end up in T-L-R, which would reset JTAG
+ */
+ jtag_add_end_state(TAP_RTI);
+ xscale_jtag_set_instr(xscale->jtag_info.chain_pos, xscale->jtag_info.dcsr);
+
+ /* set Hold reset, Halt mode and Trap Reset */
+ buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 30, 1, 0x1);
+ buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 16, 1, 0x1);
+ xscale_write_dcsr(target, 1, 0);
+
+ /* select BYPASS, because having DCSR selected caused problems on the PXA27x */
+ xscale_jtag_set_instr(xscale->jtag_info.chain_pos, 0x7f);
+ jtag_execute_queue();
+
+ /* assert reset */
+ jtag_add_reset(0, 1);
+
/* sleep 1ms, to be sure we fulfill any requirements */
jtag_add_sleep(1000);
-
+ jtag_execute_queue();
+
target->state = TARGET_RESET;
-
- return ERROR_OK;
+ return ERROR_OK;
}
int xscale_deassert_reset(target_t *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
- FILE *binary;
+
+ fileio_t debug_handler;
u32 address;
- struct stat binary_stat;
u32 binary_size;
- u32 buffer[8];
u32 buf_cnt;
int i;
-
+ int retval;
+
breakpoint_t *breakpoint = target->breakpoints;
-
+
+ DEBUG("-");
+
xscale->ibcr_available = 2;
xscale->ibcr0_used = 0;
xscale->ibcr1_used = 0;
-
+
xscale->dbr_available = 2;
xscale->dbr0_used = 0;
xscale->dbr1_used = 0;
-
+
/* mark all hardware breakpoints as unset */
while (breakpoint)
{
}
breakpoint = breakpoint->next;
}
-
+
if (!xscale->handler_installed)
{
- /* release TRST */
- jtag_add_reset(0, -1);
- jtag_add_sleep(100000);
-
- /* set Hold reset, Halt mode and Trap Reset */
- buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 30, 1, 0x1);
- buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 16, 1, 0x1);
- xscale_write_dcsr(target, 1, 0);
- jtag_add_runtest(100, TAP_RTI);
- jtag_execute_queue();
-
/* release SRST */
jtag_add_reset(0, 0);
- /* wait 150ms; 100ms were not enough */
- jtag_add_sleep(150000);
+
+ /* wait 300ms; 150 and 100ms were not enough */
+ jtag_add_sleep(300*1000);
jtag_add_runtest(2030, TAP_RTI);
jtag_execute_queue();
-
+
+ /* set Hold reset, Halt mode and Trap Reset */
+ buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 30, 1, 0x1);
+ buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 16, 1, 0x1);
xscale_write_dcsr(target, 1, 0);
- jtag_execute_queue();
-
- /* TODO: load debug handler */
- if (stat("target/xscale/debug_handler.bin", &binary_stat) == -1)
- {
- ERROR("couldn't stat() target/xscale/debug_handler.bin: %s", strerror(errno));
- return ERROR_OK;
- }
-
- if (!(binary = fopen("target/xscale/debug_handler.bin", "r")))
+
+ /* Load debug handler */
+ if (fileio_open(&debug_handler, "xscale/debug_handler.bin", FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
{
- ERROR("couldn't open target/xscale/debug_handler.bin: %s", strerror(errno));
return ERROR_OK;
}
-
- if ((binary_size = binary_stat.st_size) % 4)
+
+ if ((binary_size = debug_handler.size) % 4)
{
ERROR("debug_handler.bin: size not a multiple of 4");
exit(-1);
}
-
+
if (binary_size > 0x800)
{
ERROR("debug_handler.bin: larger than 2kb");
exit(-1);
}
-
+
binary_size = CEIL(binary_size, 32) * 32;
-
+
address = xscale->handler_address;
while (binary_size > 0)
{
- buf_cnt = fread(buffer, 4, 8, binary);
-
- for (i = 0; i < buf_cnt; i++)
+ u32 cache_line[8];
+ u8 buffer[32];
+
+ if ((retval = fileio_read(&debug_handler, 32, buffer, &buf_cnt)) != ERROR_OK)
+ {
+
+ }
+
+ for (i = 0; i < buf_cnt; i += 4)
{
/* convert LE buffer to host-endian u32 */
- buffer[i] = buf_get_u32((u8*)(&buffer[i]), 0, 32);
+ cache_line[i / 4] = le_to_h_u32(&buffer[i]);
}
-
- if (buf_cnt < 8)
+
+ for (; buf_cnt < 32; buf_cnt += 4)
{
- for (; buf_cnt < 8; buf_cnt++)
- {
- buffer[buf_cnt] = 0xe1a08008;
- }
+ cache_line[buf_cnt / 4] = 0xe1a08008;
}
-
+
/* only load addresses other than the reset vectors */
if ((address % 0x400) != 0x0)
{
- xscale_load_ic(target, 1, address, buffer);
+ xscale_load_ic(target, 1, address, cache_line);
}
-
- address += buf_cnt * 4;
- binary_size -= buf_cnt * 4;
+
+ address += buf_cnt;
+ binary_size -= buf_cnt;
};
-
+
xscale_load_ic(target, 1, 0x0, xscale->low_vectors);
xscale_load_ic(target, 1, 0xffff0000, xscale->high_vectors);
-
+
jtag_add_runtest(30, TAP_RTI);
-
- /* let the target run (should enter debug handler) */
- xscale_write_dcsr(target, 0, 0);
+
+ jtag_add_sleep(100000);
+
+ /* set Hold reset, Halt mode and Trap Reset */
+ buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 30, 1, 0x1);
+ buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 16, 1, 0x1);
+ xscale_write_dcsr(target, 1, 0);
+
+ /* clear Hold reset to let the target run (should enter debug handler) */
+ xscale_write_dcsr(target, 0, 1);
target->state = TARGET_RUNNING;
-
+
if ((target->reset_mode != RESET_HALT) && (target->reset_mode != RESET_INIT))
{
jtag_add_sleep(10000);
-
+
/* we should have entered debug now */
xscale_debug_entry(target);
target->state = TARGET_HALTED;
-
- /* the PC is now at 0x0 */
- buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, 0x0);
+
+ /* resume the target */
+ xscale_resume(target, 1, 0x0, 1, 0);
}
+
+ fileio_close(&debug_handler);
}
else
{
jtag_add_reset(0, 0);
}
-
-
+
+
return ERROR_OK;
}
int xscale_soft_reset_halt(struct target_s *target)
{
-
+
return ERROR_OK;
}
int xscale_prepare_reset_halt(struct target_s *target)
{
- /* nothing to be done for reset_halt on XScale targets */
+ /* nothing to be done for reset_halt on XScale targets
+ * we always halt after a reset to upload the debug handler
+ */
return ERROR_OK;
}
int xscale_write_core_reg(struct target_s *target, int num, enum armv4_5_mode mode, u32 value)
{
-
+
return ERROR_OK;
}
int xscale_full_context(target_t *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
-
+
u32 *buffer;
-
+
int i, j;
-
+
DEBUG("-");
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
buffer = malloc(4 * 8);
-
+
/* iterate through processor modes (FIQ, IRQ, SVC, ABT, UND and SYS)
* we can't enter User mode on an XScale (unpredictable),
* but User shares registers with SYS
for(i = 1; i < 7; i++)
{
int valid = 1;
-
- /* check if there are invalid registers in the current mode
+
+ /* check if there are invalid registers in the current mode
*/
for (j = 0; j <= 16; j++)
{
if (ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_number_to_mode(i), j).valid == 0)
valid = 0;
}
-
+
if (!valid)
{
u32 tmp_cpsr;
-
+
/* request banked registers */
xscale_send_u32(target, 0x0);
-
+
tmp_cpsr = 0x0;
tmp_cpsr |= armv4_5_number_to_mode(i);
tmp_cpsr |= 0xc0; /* I/F bits */
-
+
/* send CPSR for desired mode */
xscale_send_u32(target, tmp_cpsr);
{
xscale_receive(target, buffer, 7);
}
-
+
/* move data from buffer to register cache */
for (j = 8; j <= 14; j++)
{
}
}
}
-
+
free(buffer);
-
+
return ERROR_OK;
}
int xscale_restore_context(target_t *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
-
+
int i, j;
-
+
DEBUG("-");
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
/* iterate through processor modes (FIQ, IRQ, SVC, ABT, UND and SYS)
* we can't enter User mode on an XScale (unpredictable),
* but User shares registers with SYS
for(i = 1; i < 7; i++)
{
int dirty = 0;
-
- /* check if there are invalid registers in the current mode
+
+ /* check if there are invalid registers in the current mode
*/
for (j = 8; j <= 14; j++)
{
if (ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_number_to_mode(i), j).dirty == 1)
dirty = 1;
}
-
+
/* if not USR/SYS, check if the SPSR needs to be written */
if ((armv4_5_number_to_mode(i) != ARMV4_5_MODE_USR) && (armv4_5_number_to_mode(i) != ARMV4_5_MODE_SYS))
{
if (ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_number_to_mode(i), 16).dirty == 1)
dirty = 1;
}
-
+
if (dirty)
{
u32 tmp_cpsr;
-
+
/* send banked registers */
xscale_send_u32(target, 0x1);
-
+
tmp_cpsr = 0x0;
tmp_cpsr |= armv4_5_number_to_mode(i);
tmp_cpsr |= 0xc0; /* I/F bits */
-
+
/* send CPSR for desired mode */
xscale_send_u32(target, tmp_cpsr);
xscale_send_u32(target, buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, j).value, 0, 32));
ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_number_to_mode(i), j).dirty = 0;
}
-
+
if ((armv4_5_number_to_mode(i) != ARMV4_5_MODE_USR) && (armv4_5_number_to_mode(i) != ARMV4_5_MODE_SYS))
{
xscale_send_u32(target, buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 16).value, 0, 32));
}
}
}
-
+
return ERROR_OK;
}
xscale_common_t *xscale = armv4_5->arch_info;
u32 *buf32;
int i;
-
+
DEBUG("address: 0x%8.8x, size: 0x%8.8x, count: 0x%8.8x", address, size, count);
if (target->state != TARGET_HALTED)
if (((size == 4) && (address & 0x3u)) || ((size == 2) && (address & 0x1u)))
return ERROR_TARGET_UNALIGNED_ACCESS;
-
+
/* send memory read request (command 0x1n, n: access size) */
xscale_send_u32(target, 0x10 | size);
-
+
/* send base address for read request */
xscale_send_u32(target, address);
-
+
/* send number of requested data words */
xscale_send_u32(target, count);
-
+
/* receive data from target (count times 32-bit words in host endianness) */
buf32 = malloc(4 * count);
xscale_receive(target, buf32, count);
-
+
/* extract data from host-endian buffer into byte stream */
for (i = 0; i < count; i++)
{
}
free(buf32);
-
- /* examine DCSR, to see if Sticky Abort (SA) got set */
+
+ /* examine DCSR, to see if Sticky Abort (SA) got set */
xscale_read_dcsr(target);
if (buf_get_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 5, 1) == 1)
{
/* clear SA bit */
xscale_send_u32(target, 0x60);
-
+
return ERROR_TARGET_DATA_ABORT;
}
-
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
DEBUG("address: 0x%8.8x, size: 0x%8.8x, count: 0x%8.8x", address, size, count);
if (target->state != TARGET_HALTED)
if (((size == 4) && (address & 0x3u)) || ((size == 2) && (address & 0x1u)))
return ERROR_TARGET_UNALIGNED_ACCESS;
-
+
/* send memory write request (command 0x2n, n: access size) */
xscale_send_u32(target, 0x20 | size);
-
+
/* send base address for read request */
xscale_send_u32(target, address);
-
+
/* send number of requested data words to be written*/
xscale_send_u32(target, count);
-
+
/* extract data from host-endian buffer into byte stream */
#if 0
for (i = 0; i < count; i++)
case 1:
value = *buffer;
xscale_send_u32(target, value);
- buffer += 1;
+ buffer += 1;
break;
default:
ERROR("should never get here");
}
#endif
xscale_send(target, buffer, count, size);
-
- /* examine DCSR, to see if Sticky Abort (SA) got set */
+
+ /* examine DCSR, to see if Sticky Abort (SA) got set */
xscale_read_dcsr(target);
if (buf_get_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 5, 1) == 1)
{
/* clear SA bit */
xscale_send_u32(target, 0x60);
-
+
return ERROR_TARGET_DATA_ABORT;
}
-
+
return ERROR_OK;
}
int xscale_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer)
{
- xscale_write_memory(target, address, 4, count, buffer);
-
- return ERROR_OK;
+ return xscale_write_memory(target, address, 4, count, buffer);
+}
+
+int xscale_checksum_memory(struct target_s *target, u32 address, u32 count, u32* checksum)
+{
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
u32 xscale_get_ttb(target_t *target)
/* read cp15 control register */
xscale_get_reg(&xscale->reg_cache->reg_list[XSCALE_CTRL]);
cp15_control = buf_get_u32(xscale->reg_cache->reg_list[XSCALE_CTRL].value, 0, 32);
-
+
if (mmu)
cp15_control &= ~0x1U;
-
+
if (d_u_cache)
{
/* clean DCache */
xscale_send_u32(target, 0x50);
xscale_send_u32(target, xscale->cache_clean_address);
-
+
/* invalidate DCache */
xscale_send_u32(target, 0x51);
-
+
cp15_control &= ~0x4U;
}
-
+
if (i_cache)
{
/* invalidate ICache */
/* write new cp15 control register */
xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_CTRL], cp15_control);
-
+
/* execute cpwait to ensure outstanding operations complete */
xscale_send_u32(target, 0x53);
}
/* read cp15 control register */
xscale_get_reg(&xscale->reg_cache->reg_list[XSCALE_CTRL]);
cp15_control = buf_get_u32(xscale->reg_cache->reg_list[XSCALE_CTRL].value, 0, 32);
-
+
if (mmu)
cp15_control |= 0x1U;
-
+
if (d_u_cache)
cp15_control |= 0x4U;
-
+
if (i_cache)
cp15_control |= 0x1000U;
-
+
/* write new cp15 control register */
xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_CTRL], cp15_control);
-
+
/* execute cpwait to ensure outstanding operations complete */
xscale_send_u32(target, 0x53);
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
if (xscale->force_hw_bkpts)
breakpoint->type = BKPT_HARD;
u32 value = breakpoint->address | 1;
if (!xscale->ibcr0_used)
{
- xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR0], value);
+ xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR0], value);
xscale->ibcr0_used = 1;
breakpoint->set = 1; /* breakpoint set on first breakpoint register */
}
else if (!xscale->ibcr1_used)
{
- xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR1], value);
+ xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR1], value);
xscale->ibcr1_used = 1;
breakpoint->set = 2; /* breakpoint set on second breakpoint register */
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
if (xscale->force_hw_bkpts)
{
DEBUG("forcing use of hardware breakpoint at address 0x%8.8x", breakpoint->address);
breakpoint->type = BKPT_HARD;
}
-
+
if ((breakpoint->type == BKPT_HARD) && (xscale->ibcr_available < 1))
{
INFO("no breakpoint unit available for hardware breakpoint");
{
xscale->ibcr_available--;
}
-
+
if ((breakpoint->length != 2) && (breakpoint->length != 4))
{
INFO("only breakpoints of two (Thumb) or four (ARM) bytes length supported");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
-
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
WARNING("breakpoint not set");
return ERROR_OK;
}
-
+
if (breakpoint->type == BKPT_HARD)
{
if (breakpoint->set == 1)
{
- xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR0], 0x0);
+ xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR0], 0x0);
xscale->ibcr0_used = 0;
}
else if (breakpoint->set == 2)
{
- xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR1], 0x0);
+ xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR1], 0x0);
xscale->ibcr1_used = 0;
}
breakpoint->set = 0;
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
if (breakpoint->set)
{
xscale_unset_breakpoint(target, breakpoint);
}
-
+
if (breakpoint->type == BKPT_HARD)
xscale->ibcr_available++;
-
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
- u8 enable;
+ u8 enable=0;
reg_t *dbcon = &xscale->reg_cache->reg_list[XSCALE_DBCON];
u32 dbcon_value = buf_get_u32(dbcon->value, 0, 32);
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
xscale_get_reg(dbcon);
-
+
switch (watchpoint->rw)
{
case WPT_READ:
enable = 0x1;
break;
default:
- ERROR("BUG: watchpoint->rw neither read, write nor access");
+ ERROR("BUG: watchpoint->rw neither read, write nor access");
}
if (!xscale->dbr0_used)
ERROR("BUG: no hardware comparator available");
return ERROR_OK;
}
-
+
return ERROR_OK;
}
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
if (xscale->dbr_available < 1)
{
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
-
+
if ((watchpoint->length != 1) && (watchpoint->length != 2) && (watchpoint->length != 4))
{
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
-
+
xscale->dbr_available--;
-
+
return ERROR_OK;
}
xscale_common_t *xscale = armv4_5->arch_info;
reg_t *dbcon = &xscale->reg_cache->reg_list[XSCALE_DBCON];
u32 dbcon_value = buf_get_u32(dbcon->value, 0, 32);
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
if (!watchpoint->set)
{
WARNING("breakpoint not set");
return ERROR_OK;
}
-
+
if (watchpoint->set == 1)
{
dbcon_value &= ~0x3;
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
-
+
if (watchpoint->set)
{
xscale_unset_watchpoint(target, watchpoint);
}
-
+
xscale->dbr_available++;
-
+
return ERROR_OK;
}
void xscale_enable_watchpoints(struct target_s *target)
{
watchpoint_t *watchpoint = target->watchpoints;
-
+
while (watchpoint)
{
if (watchpoint->set == 0)
void xscale_enable_breakpoints(struct target_s *target)
{
breakpoint_t *breakpoint = target->breakpoints;
-
+
/* set any pending breakpoints */
while (breakpoint)
{
target_t *target = arch_info->target;
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
-
+
/* DCSR, TX and RX are accessible via JTAG */
if (strcmp(reg->name, "XSCALE_DCSR") == 0)
{
{
/* send CP read request (command 0x40) */
xscale_send_u32(target, 0x40);
-
+
/* send CP register number */
xscale_send_u32(target, arch_info->dbg_handler_number);
reg->dirty = 0;
reg->valid = 1;
}
-
+
return ERROR_OK;
}
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
u32 value = buf_get_u32(buf, 0, 32);
-
+
/* DCSR, TX and RX are accessible via JTAG */
if (strcmp(reg->name, "XSCALE_DCSR") == 0)
{
{
/* send CP write request (command 0x41) */
xscale_send_u32(target, 0x41);
-
+
/* send CP register number */
xscale_send_u32(target, arch_info->dbg_handler_number);
-
+
/* send CP register value */
xscale_send_u32(target, value);
buf_set_u32(reg->value, 0, 32, value);
}
-
+
return ERROR_OK;
}
int xscale_set_reg_u32(reg_t *reg, u32 value)
{
u8 buf[4];
-
+
buf_set_u32(buf, 0, 32, value);
-
+
return xscale_set_reg(reg, buf);
}
xscale_common_t *xscale = armv4_5->arch_info;
reg_t *dcsr = &xscale->reg_cache->reg_list[XSCALE_DCSR];
xscale_reg_t *dcsr_arch_info = dcsr->arch_info;
-
+
/* send CP write request (command 0x41) */
xscale_send_u32(target, 0x41);
-
+
/* send CP register number */
xscale_send_u32(target, dcsr_arch_info->dbg_handler_number);
-
+
/* send CP register value */
xscale_send_u32(target, value);
buf_set_u32(dcsr->value, 0, 32, value);
-
+
+ return ERROR_OK;
+}
+
+int xscale_read_trace(target_t *target)
+{
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ xscale_common_t *xscale = armv4_5->arch_info;
+ xscale_trace_data_t **trace_data_p;
+
+ /* 258 words from debug handler
+ * 256 trace buffer entries
+ * 2 checkpoint addresses
+ */
+ u32 trace_buffer[258];
+ int is_address[256];
+ int i, j;
+
+ if (target->state != TARGET_HALTED)
+ {
+ WARNING("target must be stopped to read trace data");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ /* send read trace buffer command (command 0x61) */
+ xscale_send_u32(target, 0x61);
+
+ /* receive trace buffer content */
+ xscale_receive(target, trace_buffer, 258);
+
+ /* parse buffer backwards to identify address entries */
+ for (i = 255; i >= 0; i--)
+ {
+ is_address[i] = 0;
+ if (((trace_buffer[i] & 0xf0) == 0x90) ||
+ ((trace_buffer[i] & 0xf0) == 0xd0))
+ {
+ if (i >= 3)
+ is_address[--i] = 1;
+ if (i >= 2)
+ is_address[--i] = 1;
+ if (i >= 1)
+ is_address[--i] = 1;
+ if (i >= 0)
+ is_address[--i] = 1;
+ }
+ }
+
+
+ /* search first non-zero entry */
+ for (j = 0; (j < 256) && (trace_buffer[j] == 0) && (!is_address[j]); j++)
+ ;
+
+ if (j == 256)
+ {
+ DEBUG("no trace data collected");
+ return ERROR_XSCALE_NO_TRACE_DATA;
+ }
+
+ for (trace_data_p = &xscale->trace.data; *trace_data_p; trace_data_p = &(*trace_data_p)->next)
+ ;
+
+ *trace_data_p = malloc(sizeof(xscale_trace_data_t));
+ (*trace_data_p)->next = NULL;
+ (*trace_data_p)->chkpt0 = trace_buffer[256];
+ (*trace_data_p)->chkpt1 = trace_buffer[257];
+ (*trace_data_p)->last_instruction = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
+ (*trace_data_p)->entries = malloc(sizeof(xscale_trace_entry_t) * (256 - j));
+ (*trace_data_p)->depth = 256 - j;
+
+ for (i = j; i < 256; i++)
+ {
+ (*trace_data_p)->entries[i - j].data = trace_buffer[i];
+ if (is_address[i])
+ (*trace_data_p)->entries[i - j].type = XSCALE_TRACE_ADDRESS;
+ else
+ (*trace_data_p)->entries[i - j].type = XSCALE_TRACE_MESSAGE;
+ }
+
+ return ERROR_OK;
+}
+
+int xscale_read_instruction(target_t *target, arm_instruction_t *instruction)
+{
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ xscale_common_t *xscale = armv4_5->arch_info;
+ int i;
+ int section = -1;
+ u32 size_read;
+ u32 opcode;
+ int retval;
+
+ if (!xscale->trace.image)
+ return ERROR_TRACE_IMAGE_UNAVAILABLE;
+
+ /* search for the section the current instruction belongs to */
+ for (i = 0; i < xscale->trace.image->num_sections; i++)
+ {
+ if ((xscale->trace.image->sections[i].base_address <= xscale->trace.current_pc) &&
+ (xscale->trace.image->sections[i].base_address + xscale->trace.image->sections[i].size > xscale->trace.current_pc))
+ {
+ section = i;
+ break;
+ }
+ }
+
+ if (section == -1)
+ {
+ /* current instruction couldn't be found in the image */
+ return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
+ }
+
+ if (xscale->trace.core_state == ARMV4_5_STATE_ARM)
+ {
+ u8 buf[4];
+ if ((retval = image_read_section(xscale->trace.image, section,
+ xscale->trace.current_pc - xscale->trace.image->sections[section].base_address,
+ 4, buf, &size_read)) != ERROR_OK)
+ {
+ ERROR("error while reading instruction: %i", retval);
+ return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
+ }
+ opcode = target_buffer_get_u32(target, buf);
+ arm_evaluate_opcode(opcode, xscale->trace.current_pc, instruction);
+ }
+ else if (xscale->trace.core_state == ARMV4_5_STATE_THUMB)
+ {
+ u8 buf[2];
+ if ((retval = image_read_section(xscale->trace.image, section,
+ xscale->trace.current_pc - xscale->trace.image->sections[section].base_address,
+ 2, buf, &size_read)) != ERROR_OK)
+ {
+ ERROR("error while reading instruction: %i", retval);
+ return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
+ }
+ opcode = target_buffer_get_u16(target, buf);
+ thumb_evaluate_opcode(opcode, xscale->trace.current_pc, instruction);
+ }
+ else
+ {
+ ERROR("BUG: unknown core state encountered");
+ exit(-1);
+ }
+
+ return ERROR_OK;
+}
+
+int xscale_branch_address(xscale_trace_data_t *trace_data, int i, u32 *target)
+{
+ /* if there are less than four entries prior to the indirect branch message
+ * we can't extract the address */
+ if (i < 4)
+ {
+ return -1;
+ }
+
+ *target = (trace_data->entries[i-1].data) | (trace_data->entries[i-2].data << 8) |
+ (trace_data->entries[i-3].data << 16) | (trace_data->entries[i-4].data << 24);
+
+ return 0;
+}
+
+int xscale_analyze_trace(target_t *target, command_context_t *cmd_ctx)
+{
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ xscale_common_t *xscale = armv4_5->arch_info;
+ int next_pc_ok = 0;
+ u32 next_pc = 0x0;
+ xscale_trace_data_t *trace_data = xscale->trace.data;
+ int retval;
+
+ while (trace_data)
+ {
+ int i, chkpt;
+ int rollover;
+ int branch;
+ int exception;
+ xscale->trace.core_state = ARMV4_5_STATE_ARM;
+
+ chkpt = 0;
+ rollover = 0;
+
+ for (i = 0; i < trace_data->depth; i++)
+ {
+ next_pc_ok = 0;
+ branch = 0;
+ exception = 0;
+
+ if (trace_data->entries[i].type == XSCALE_TRACE_ADDRESS)
+ continue;
+
+ switch ((trace_data->entries[i].data & 0xf0) >> 4)
+ {
+ case 0: /* Exceptions */
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ exception = (trace_data->entries[i].data & 0x70) >> 4;
+ next_pc_ok = 1;
+ next_pc = (trace_data->entries[i].data & 0xf0) >> 2;
+ command_print(cmd_ctx, "--- exception %i ---", (trace_data->entries[i].data & 0xf0) >> 4);
+ break;
+ case 8: /* Direct Branch */
+ branch = 1;
+ break;
+ case 9: /* Indirect Branch */
+ branch = 1;
+ if (xscale_branch_address(trace_data, i, &next_pc) == 0)
+ {
+ next_pc_ok = 1;
+ }
+ break;
+ case 13: /* Checkpointed Indirect Branch */
+ if (xscale_branch_address(trace_data, i, &next_pc) == 0)
+ {
+ next_pc_ok = 1;
+ if (((chkpt == 0) && (next_pc != trace_data->chkpt0))
+ || ((chkpt == 1) && (next_pc != trace_data->chkpt1)))
+ WARNING("checkpointed indirect branch target address doesn't match checkpoint");
+ }
+ /* explicit fall-through */
+ case 12: /* Checkpointed Direct Branch */
+ branch = 1;
+ if (chkpt == 0)
+ {
+ next_pc_ok = 1;
+ next_pc = trace_data->chkpt0;
+ chkpt++;
+ }
+ else if (chkpt == 1)
+ {
+ next_pc_ok = 1;
+ next_pc = trace_data->chkpt0;
+ chkpt++;
+ }
+ else
+ {
+ WARNING("more than two checkpointed branches encountered");
+ }
+ break;
+ case 15: /* Roll-over */
+ rollover++;
+ continue;
+ default: /* Reserved */
+ command_print(cmd_ctx, "--- reserved trace message ---");
+ ERROR("BUG: trace message %i is reserved", (trace_data->entries[i].data & 0xf0) >> 4);
+ return ERROR_OK;
+ }
+
+ if (xscale->trace.pc_ok)
+ {
+ int executed = (trace_data->entries[i].data & 0xf) + rollover * 16;
+ arm_instruction_t instruction;
+
+ if ((exception == 6) || (exception == 7))
+ {
+ /* IRQ or FIQ exception, no instruction executed */
+ executed -= 1;
+ }
+
+ while (executed-- >= 0)
+ {
+ if ((retval = xscale_read_instruction(target, &instruction)) != ERROR_OK)
+ {
+ /* can't continue tracing with no image available */
+ if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
+ {
+ return retval;
+ }
+ else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE)
+ {
+ /* TODO: handle incomplete images */
+ }
+ }
+
+ /* a precise abort on a load to the PC is included in the incremental
+ * word count, other instructions causing data aborts are not included
+ */
+ if ((executed == 0) && (exception == 4)
+ && ((instruction.type >= ARM_LDR) && (instruction.type <= ARM_LDM)))
+ {
+ if ((instruction.type == ARM_LDM)
+ && ((instruction.info.load_store_multiple.register_list & 0x8000) == 0))
+ {
+ executed--;
+ }
+ else if (((instruction.type >= ARM_LDR) && (instruction.type <= ARM_LDRSH))
+ && (instruction.info.load_store.Rd != 15))
+ {
+ executed--;
+ }
+ }
+
+ /* only the last instruction executed
+ * (the one that caused the control flow change)
+ * could be a taken branch
+ */
+ if (((executed == -1) && (branch == 1)) &&
+ (((instruction.type == ARM_B) ||
+ (instruction.type == ARM_BL) ||
+ (instruction.type == ARM_BLX)) &&
+ (instruction.info.b_bl_bx_blx.target_address != -1)))
+ {
+ xscale->trace.current_pc = instruction.info.b_bl_bx_blx.target_address;
+ }
+ else
+ {
+ xscale->trace.current_pc += (xscale->trace.core_state == ARMV4_5_STATE_ARM) ? 4 : 2;
+ }
+ command_print(cmd_ctx, "%s", instruction.text);
+ }
+
+ rollover = 0;
+ }
+
+ if (next_pc_ok)
+ {
+ xscale->trace.current_pc = next_pc;
+ xscale->trace.pc_ok = 1;
+ }
+ }
+
+ for (; xscale->trace.current_pc < trace_data->last_instruction; xscale->trace.current_pc += (xscale->trace.core_state == ARMV4_5_STATE_ARM) ? 4 : 2)
+ {
+ arm_instruction_t instruction;
+ if ((retval = xscale_read_instruction(target, &instruction)) != ERROR_OK)
+ {
+ /* can't continue tracing with no image available */
+ if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
+ {
+ return retval;
+ }
+ else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE)
+ {
+ /* TODO: handle incomplete images */
+ }
+ }
+ command_print(cmd_ctx, "%s", instruction.text);
+ }
+
+ trace_data = trace_data->next;
+ }
+
return ERROR_OK;
}
xscale_reg_t *arch_info = malloc(sizeof(xscale_reg_arch_info));
int i;
int num_regs = sizeof(xscale_reg_arch_info) / sizeof(xscale_reg_t);
-
+
(*cache_p) = armv4_5_build_reg_cache(target, armv4_5);
armv4_5->core_cache = (*cache_p);
-
+
/* register a register arch-type for XScale dbg registers only once */
if (xscale_reg_arch_type == -1)
xscale_reg_arch_type = register_reg_arch_type(xscale_get_reg, xscale_set_reg);
-
+
(*cache_p)->next = malloc(sizeof(reg_cache_t));
cache_p = &(*cache_p)->next;
-
+
/* fill in values for the xscale reg cache */
(*cache_p)->name = "XScale registers";
(*cache_p)->next = NULL;
(*cache_p)->reg_list = malloc(num_regs * sizeof(reg_t));
(*cache_p)->num_regs = num_regs;
-
+
for (i = 0; i < num_regs; i++)
{
(*cache_p)->reg_list[i].name = xscale_reg_list[i];
arch_info[i] = xscale_reg_arch_info[i];
arch_info[i].target = target;
}
-
+
xscale->reg_cache = (*cache_p);
}
ERROR("XScale target requires a reset");
ERROR("Reset target to enable debug");
}
-
+
+ /* assert TRST once during startup */
+ jtag_add_reset(1, 0);
+ jtag_add_sleep(5000);
+ jtag_add_reset(0, 0);
+ jtag_execute_queue();
+
return ERROR_OK;
}
int xscale_quit()
{
-
+
return ERROR_OK;
}
armv4_5_common_t *armv4_5;
u32 high_reset_branch, low_reset_branch;
int i;
-
+
armv4_5 = &xscale->armv4_5_common;
-
+
/* store architecture specfic data (none so far) */
xscale->arch_info = NULL;
xscale->common_magic = XSCALE_COMMON_MAGIC;
-
+
/* remember the variant (PXA25x, PXA27x, IXP42x, ...) */
xscale->variant = strdup(variant);
-
+
/* prepare JTAG information for the new target */
xscale->jtag_info.chain_pos = chain_pos;
jtag_register_event_callback(xscale_jtag_callback, target);
xscale->jtag_info.dbgrx = 0x02;
xscale->jtag_info.dbgtx = 0x10;
xscale->jtag_info.dcsr = 0x09;
- xscale->jtag_info.ldic = 0x07;
+ xscale->jtag_info.ldic = 0x07;
if ((strcmp(xscale->variant, "pxa250") == 0) ||
(strcmp(xscale->variant, "pxa255") == 0) ||
{
xscale->jtag_info.ir_length = 7;
}
-
+
/* the debug handler isn't installed (and thus not running) at this time */
xscale->handler_installed = 0;
xscale->handler_running = 0;
xscale->handler_address = 0xfe000800;
-
+
/* clear the vectors we keep locally for reference */
memset(xscale->low_vectors, 0, sizeof(xscale->low_vectors));
memset(xscale->high_vectors, 0, sizeof(xscale->high_vectors));
/* calculate branches to debug handler */
low_reset_branch = (xscale->handler_address + 0x20 - 0x0 - 0x8) >> 2;
high_reset_branch = (xscale->handler_address + 0x20 - 0xffff0000 - 0x8) >> 2;
-
+
xscale->low_vectors[0] = ARMV4_5_B((low_reset_branch & 0xffffff), 0);
xscale->high_vectors[0] = ARMV4_5_B((high_reset_branch & 0xffffff), 0);
-
+
for (i = 1; i <= 7; i++)
{
xscale->low_vectors[i] = ARMV4_5_B(0xfffffe, 0);
xscale->high_vectors[i] = ARMV4_5_B(0xfffffe, 0);
}
-
- /* 64kB aligned region used for DCache cleaning */
- xscale->cache_clean_address = 0xfffe0000;
-
+
+ /* 64kB aligned region used for DCache cleaning */
+ xscale->cache_clean_address = 0xfffe0000;
+
xscale->hold_rst = 0;
xscale->external_debug_break = 0;
-
+
xscale->force_hw_bkpts = 1;
-
+
xscale->ibcr_available = 2;
xscale->ibcr0_used = 0;
xscale->ibcr1_used = 0;
-
+
xscale->dbr_available = 2;
xscale->dbr0_used = 0;
xscale->dbr1_used = 0;
-
+
xscale->arm_bkpt = ARMV5_BKPT(0x0);
xscale->thumb_bkpt = ARMV5_T_BKPT(0x0) & 0xffff;
-
+
xscale->vector_catch = 0x1;
-
- xscale->trace_buffer_enabled = 0;
- xscale->trace_buffer_fill = 0;
-
+
+ xscale->trace.capture_status = TRACE_IDLE;
+ xscale->trace.data = NULL;
+ xscale->trace.image = NULL;
+ xscale->trace.buffer_enabled = 0;
+ xscale->trace.buffer_fill = 0;
+
/* prepare ARMv4/5 specific information */
armv4_5->arch_info = xscale;
armv4_5->read_core_reg = xscale_read_core_reg;
xscale->armv4_5_mmu.has_tiny_pages = 1;
xscale->armv4_5_mmu.mmu_enabled = 0;
+ xscale->fast_memory_access = 0;
+
return ERROR_OK;
}
if (argc < 5)
{
ERROR("'target xscale' requires four arguments: <endianess> <startup_mode> <chain_pos> <variant>");
- exit(-1);
+ return ERROR_OK;
}
-
+
chain_pos = strtoul(args[3], NULL, 0);
-
+
variant = args[4];
-
+
xscale_init_arch_info(target, xscale, chain_pos, variant);
xscale_build_reg_cache(target);
-
+
return ERROR_OK;
}
ERROR("'xscale debug_handler <target#> <address>' command takes two required operands");
return ERROR_OK;
}
-
+
if ((target = get_target_by_num(strtoul(args[0], NULL, 0))) == NULL)
{
ERROR("no target '%s' configured", args[0]);
return ERROR_OK;
}
-
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an ARM920t target");
return ERROR_OK;
}
-
+
handler_address = strtoul(args[1], NULL, 0);
-
+
if (((handler_address >= 0x800) && (handler_address <= 0x1fef800)) ||
((handler_address >= 0xfe000800) && (handler_address <= 0xfffff800)))
{
{
ERROR("xscale debug_handler <address> must be between 0x800 and 0x1fef800 or between 0xfe000800 and 0xfffff800");
}
-
+
return ERROR_OK;
}
xscale_common_t *xscale;
u32 cache_clean_address;
-
+
if (argc < 2)
{
ERROR("'xscale cache_clean_address <target#> <address>' command takes two required operands");
return ERROR_OK;
}
-
+
if ((target = get_target_by_num(strtoul(args[0], NULL, 0))) == NULL)
{
ERROR("no target '%s' configured", args[0]);
return ERROR_OK;
}
-
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale target");
return ERROR_OK;
}
-
+
cache_clean_address = strtoul(args[1], NULL, 0);
-
+
if (cache_clean_address & 0xffff)
{
ERROR("xscale cache_clean_address <address> must be 64kb aligned");
{
xscale->cache_clean_address = cache_clean_address;
}
-
+
return ERROR_OK;
}
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
xscale_common_t *xscale;
-
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale target");
return ERROR_OK;
}
-
+
return armv4_5_handle_cache_info_command(cmd_ctx, &xscale->armv4_5_mmu.armv4_5_cache);
}
-int xscale_handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
-{
- target_t *target = get_current_target(cmd_ctx);
+static int xscale_virt2phys(struct target_s *target, u32 virtual, u32 *physical)
+{
armv4_5_common_t *armv4_5;
xscale_common_t *xscale;
+ int retval;
+ int type;
+ u32 cb;
+ int domain;
+ u32 ap;
- if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
+
+ if ((retval = xscale_get_arch_pointers(target, &armv4_5, &xscale)) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale target");
- return ERROR_OK;
+ return retval;
+ }
+ u32 ret = armv4_5_mmu_translate_va(target, &xscale->armv4_5_mmu, virtual, &type, &cb, &domain, &ap);
+ if (type == -1)
+ {
+ return ret;
}
+ *physical = ret;
+ return ERROR_OK;
+}
+
+static int xscale_mmu(struct target_s *target, int *enabled)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ xscale_common_t *xscale = armv4_5->arch_info;
if (target->state != TARGET_HALTED)
{
- command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
- return ERROR_OK;
+ ERROR("Target not halted");
+ return ERROR_TARGET_INVALID;
}
-
- return armv4_5_mmu_handle_virt2phys_command(cmd_ctx, cmd, args, argc, target, &xscale->armv4_5_mmu);
+ *enabled = xscale->armv4_5_mmu.mmu_enabled;
+ return ERROR_OK;
}
+
int xscale_handle_mmu_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;
xscale_common_t *xscale;
-
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale 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 >= 1)
{
if (strcmp("enable", args[0]) == 0)
xscale->armv4_5_mmu.mmu_enabled = 0;
}
}
-
+
command_print(cmd_ctx, "mmu %s", (xscale->armv4_5_mmu.mmu_enabled) ? "enabled" : "disabled");
-
+
return ERROR_OK;
}
int xscale_handle_idcache_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;
xscale_common_t *xscale;
int icache = 0, dcache = 0;
-
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale 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 (strcmp(cmd, "icache") == 0)
icache = 1;
else if (strcmp(cmd, "dcache") == 0)
dcache = 1;
-
+
if (argc >= 1)
{
if (strcmp("enable", args[0]) == 0)
{
xscale_enable_mmu_caches(target, 0, dcache, icache);
-
+
if (icache)
xscale->armv4_5_mmu.armv4_5_cache.i_cache_enabled = 1;
else if (dcache)
xscale->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = 0;
}
}
-
+
if (icache)
command_print(cmd_ctx, "icache %s", (xscale->armv4_5_mmu.armv4_5_cache.i_cache_enabled) ? "enabled" : "disabled");
-
+
if (dcache)
command_print(cmd_ctx, "dcache %s", (xscale->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled) ? "enabled" : "disabled");
-
+
return ERROR_OK;
}
int xscale_handle_vector_catch_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;
xscale_common_t *xscale;
-
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale target");
return ERROR_OK;
}
-
+
if (argc < 1)
{
command_print(cmd_ctx, "usage: xscale vector_catch [mask]");
buf_set_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 16, 8, xscale->vector_catch);
xscale_write_dcsr(target, -1, -1);
}
-
+
command_print(cmd_ctx, "vector catch mask: 0x%2.2x", xscale->vector_catch);
-
+
return ERROR_OK;
}
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
xscale_common_t *xscale;
-
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale target");
return ERROR_OK;
}
-
+
if ((argc >= 1) && (strcmp("enable", args[0]) == 0))
{
xscale->force_hw_bkpts = 1;
{
command_print(cmd_ctx, "usage: xscale force_hw_bkpts <enable|disable>");
}
-
+
command_print(cmd_ctx, "force hardware breakpoints %s", (xscale->force_hw_bkpts) ? "enabled" : "disabled");
return ERROR_OK;
armv4_5_common_t *armv4_5;
xscale_common_t *xscale;
u32 dcsr_value;
-
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale 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 >= 1) && (strcmp("enable", args[0]) == 0))
{
- xscale->trace_buffer_enabled = 1;
+ xscale_trace_data_t *td, *next_td;
+ xscale->trace.buffer_enabled = 1;
+
+ /* free old trace data */
+ td = xscale->trace.data;
+ while (td)
+ {
+ next_td = td->next;
+
+ if (td->entries)
+ free(td->entries);
+ free(td);
+ td = next_td;
+ }
+ xscale->trace.data = NULL;
}
else if ((argc >= 1) && (strcmp("disable", args[0]) == 0))
{
- xscale->trace_buffer_enabled = 0;
+ xscale->trace.buffer_enabled = 0;
}
if ((argc >= 2) && (strcmp("fill", args[1]) == 0))
{
- xscale->trace_buffer_fill = 1;
+ if (argc >= 3)
+ xscale->trace.buffer_fill = strtoul(args[2], NULL, 0);
+ else
+ xscale->trace.buffer_fill = 1;
}
else if ((argc >= 2) && (strcmp("wrap", args[1]) == 0))
{
- xscale->trace_buffer_fill = 0;
+ xscale->trace.buffer_fill = -1;
}
-
- command_print(cmd_ctx, "trace buffer %s (%s)",
- (xscale->trace_buffer_enabled) ? "enabled" : "disabled",
- (xscale->trace_buffer_fill) ? "fill" : "wrap");
+
+ if (xscale->trace.buffer_enabled)
+ {
+ /* if we enable the trace buffer in fill-once
+ * mode we know the address of the first instruction */
+ xscale->trace.pc_ok = 1;
+ xscale->trace.current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
+ }
+ else
+ {
+ /* otherwise the address is unknown, and we have no known good PC */
+ xscale->trace.pc_ok = 0;
+ }
+
+ command_print(cmd_ctx, "trace buffer %s (%s)",
+ (xscale->trace.buffer_enabled) ? "enabled" : "disabled",
+ (xscale->trace.buffer_fill > 0) ? "fill" : "wrap");
dcsr_value = buf_get_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 0, 32);
- if (xscale->trace_buffer_fill)
+ if (xscale->trace.buffer_fill >= 0)
xscale_write_dcsr_sw(target, (dcsr_value & 0xfffffffc) | 2);
else
xscale_write_dcsr_sw(target, dcsr_value & 0xfffffffc);
-
+
return ERROR_OK;
}
-int xscale_handle_dump_trace_buffer_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+int xscale_handle_trace_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ target_t *target;
+ armv4_5_common_t *armv4_5;
+ xscale_common_t *xscale;
+
+ if (argc < 1)
+ {
+ command_print(cmd_ctx, "usage: xscale trace_image <file> [base address] [type]");
+ return ERROR_OK;
+ }
+
+ target = get_current_target(cmd_ctx);
+
+ if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
+ {
+ return ERROR_OK;
+ }
+
+ if (xscale->trace.image)
+ {
+ image_close(xscale->trace.image);
+ free(xscale->trace.image);
+ command_print(cmd_ctx, "previously loaded image found and closed");
+ }
+
+ xscale->trace.image = malloc(sizeof(image_t));
+ xscale->trace.image->base_address_set = 0;
+ xscale->trace.image->start_address_set = 0;
+
+ /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
+ if (argc >= 2)
+ {
+ xscale->trace.image->base_address_set = 1;
+ xscale->trace.image->base_address = strtoul(args[1], NULL, 0);
+ }
+ else
+ {
+ xscale->trace.image->base_address_set = 0;
+ }
+
+ if (image_open(xscale->trace.image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
+ {
+ free(xscale->trace.image);
+ xscale->trace.image = NULL;
+ return ERROR_OK;
+ }
+
+ return ERROR_OK;
+}
+
+int xscale_handle_dump_trace_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;
xscale_common_t *xscale;
- u32 trace_buffer[258];
- int is_address[256];
- int i;
-
+ xscale_trace_data_t *trace_data;
+ fileio_t file;
+
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
- command_print(cmd_ctx, "target isn't an XScale target");
return ERROR_OK;
}
-
+
if (target->state != TARGET_HALTED)
{
command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
return ERROR_OK;
}
- /* send read trace buffer command (command 0x61) */
- xscale_send_u32(target, 0x61);
+ if (argc < 1)
+ {
+ command_print(cmd_ctx, "usage: xscale dump_trace <file>");
+ return ERROR_OK;
+ }
+
+ trace_data = xscale->trace.data;
+
+ if (!trace_data)
+ {
+ command_print(cmd_ctx, "no trace data collected");
+ return ERROR_OK;
+ }
+
+ if (fileio_open(&file, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
+ {
+ return ERROR_OK;
+ }
+
+ while (trace_data)
+ {
+ int i;
+
+ fileio_write_u32(&file, trace_data->chkpt0);
+ fileio_write_u32(&file, trace_data->chkpt1);
+ fileio_write_u32(&file, trace_data->last_instruction);
+ fileio_write_u32(&file, trace_data->depth);
+
+ for (i = 0; i < trace_data->depth; i++)
+ fileio_write_u32(&file, trace_data->entries[i].data | ((trace_data->entries[i].type & 0xffff) << 16));
+
+ trace_data = trace_data->next;
+ }
+
+ fileio_close(&file);
+
+ return ERROR_OK;
+}
+
+int xscale_handle_analyze_trace_buffer_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;
+ xscale_common_t *xscale;
+
+ if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
+ {
+ return ERROR_OK;
+ }
+
+ xscale_analyze_trace(target, cmd_ctx);
+
+ return ERROR_OK;
+}
+
+int xscale_handle_cp15(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;
+ xscale_common_t *xscale;
- /* receive trace buffer content */
- xscale_receive(target, trace_buffer, 258);
+ if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
+ {
+ return ERROR_OK;
+ }
- for (i = 255; i >= 0; i--)
+ if (target->state != TARGET_HALTED)
{
- is_address[i] = 0;
- if (((trace_buffer[i] & 0xf0) == 0x90) ||
- ((trace_buffer[i] & 0xf0) == 0xd0))
+ command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
+ return ERROR_OK;
+ }
+ u32 reg_no = 0;
+ reg_t *reg = NULL;
+ if(argc > 0)
+ {
+ reg_no = strtoul(args[0], NULL, 0);
+ /*translate from xscale cp15 register no to openocd register*/
+ switch(reg_no)
{
- if (i >= 4)
- is_address[--i] = 1;
- if (i >= 3)
- is_address[--i] = 1;
- if (i >= 2)
- is_address[--i] = 1;
- if (i >= 1)
- is_address[--i] = 1;
+ case 0:
+ reg_no = XSCALE_MAINID;
+ break;
+ case 1:
+ reg_no = XSCALE_CTRL;
+ break;
+ case 2:
+ reg_no = XSCALE_TTB;
+ break;
+ case 3:
+ reg_no = XSCALE_DAC;
+ break;
+ case 5:
+ reg_no = XSCALE_FSR;
+ break;
+ case 6:
+ reg_no = XSCALE_FAR;
+ break;
+ case 13:
+ reg_no = XSCALE_PID;
+ break;
+ case 15:
+ reg_no = XSCALE_CPACCESS;
+ break;
+ default:
+ command_print(cmd_ctx, "invalid register number");
+ return ERROR_INVALID_ARGUMENTS;
}
+ reg = &xscale->reg_cache->reg_list[reg_no];
+
+ }
+ if(argc == 1)
+ {
+ u32 value;
+
+ /* read cp15 control register */
+ xscale_get_reg(reg);
+ value = buf_get_u32(reg->value, 0, 32);
+ command_print(cmd_ctx, "%s (/%i): 0x%x", reg->name, reg->size, value);
+ }
+ else if(argc == 2)
+ {
+
+ u32 value = strtoul(args[1], NULL, 0);
+
+ /* send CP write request (command 0x41) */
+ xscale_send_u32(target, 0x41);
+
+ /* send CP register number */
+ xscale_send_u32(target, reg_no);
+
+ /* send CP register value */
+ xscale_send_u32(target, value);
+
+ /* execute cpwait to ensure outstanding operations complete */
+ xscale_send_u32(target, 0x53);
+ }
+ else
+ {
+ command_print(cmd_ctx, "usage: cp15 [register]<, [value]>");
}
- for (i = 0; i < 256; i++)
+ return ERROR_OK;
+}
+
+int handle_xscale_fast_memory_access_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;
+ xscale_common_t *xscale;
+
+ if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
-#if 0
- command_print(cmd_ctx, "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x",
- trace_buffer[i + 0], trace_buffer[i + 1], trace_buffer[i + 2], trace_buffer[i + 3],
- trace_buffer[i + 4], trace_buffer[i + 5], trace_buffer[i + 6], trace_buffer[i + 6]
- );
- i += 8;
-#endif
- if (is_address[i])
+ return ERROR_OK;
+ }
+
+ if (argc == 1)
+ {
+ if (strcmp("enable", args[0]) == 0)
+ {
+ xscale->fast_memory_access = 1;
+ }
+ else if (strcmp("disable", args[0]) == 0)
{
- command_print(cmd_ctx, "address: 0x%2.2x%2.2x%2.2x%2.2x", trace_buffer[i], trace_buffer[i+1], trace_buffer[i+2], trace_buffer[i+3]);
- i += 3;
+ xscale->fast_memory_access = 0;
}
else
{
- switch ((trace_buffer[i] & 0xf0) >> 4)
- {
- case 0:
- command_print(cmd_ctx, "0x%2.2x: reset exception", trace_buffer[i]);
- break;
- case 1:
- command_print(cmd_ctx, "0x%2.2x: undef exception", trace_buffer[i]);
- break;
- case 2:
- command_print(cmd_ctx, "0x%2.2x: swi exception", trace_buffer[i]);
- break;
- case 3:
- command_print(cmd_ctx, "0x%2.2x: pabort exception", trace_buffer[i]);
- break;
- case 4:
- command_print(cmd_ctx, "0x%2.2x: dabort exception", trace_buffer[i]);
- break;
- case 5:
- command_print(cmd_ctx, "0x%2.2x: invalid", trace_buffer[i]);
- break;
- case 6:
- command_print(cmd_ctx, "0x%2.2x: irq exception", trace_buffer[i]);
- break;
- case 7:
- command_print(cmd_ctx, "0x%2.2x: fiq exception", trace_buffer[i]);
- break;
- case 0x8:
- command_print(cmd_ctx, "0x%2.2x: direct branch", trace_buffer[i]);
- break;
- case 0x9:
- command_print(cmd_ctx, "0x%2.2x: indirect branch", trace_buffer[i]);
- break;
- case 0xa:
- command_print(cmd_ctx, "0x%2.2x: invalid", trace_buffer[i]);
- break;
- case 0xb:
- command_print(cmd_ctx, "0x%2.2x: invalid", trace_buffer[i]);
- break;
- case 0xc:
- command_print(cmd_ctx, "0x%2.2x: checkpointed direct branch", trace_buffer[i]);
- break;
- case 0xd:
- command_print(cmd_ctx, "0x%2.2x: checkpointed indirect branch", trace_buffer[i]);
- break;
- case 0xe:
- command_print(cmd_ctx, "0x%2.2x: invalid", trace_buffer[i]);
- break;
- case 0xf:
- command_print(cmd_ctx, "0x%2.2x: rollover", trace_buffer[i]);
- break;
- }
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
+ } else if (argc!=0)
+ {
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
-
- command_print(cmd_ctx, "chkpt0: 0x%8.8x, chkpt1: 0x%8.8x", trace_buffer[256], trace_buffer[257]);
+
+ command_print(cmd_ctx, "fast memory access is %s", (xscale->fast_memory_access) ? "enabled" : "disabled");
- return ERROR_OK;
+ return ERROR_OK;
}
int xscale_register_commands(struct command_context_s *cmd_ctx)
command_t *xscale_cmd;
xscale_cmd = register_command(cmd_ctx, NULL, "xscale", NULL, COMMAND_ANY, "xscale specific commands");
-
- register_command(cmd_ctx, xscale_cmd, "debug_handler", xscale_handle_debug_handler_command, COMMAND_CONFIG, NULL);
+
+ register_command(cmd_ctx, xscale_cmd, "debug_handler", xscale_handle_debug_handler_command, COMMAND_ANY, "'xscale debug_handler <target#> <address>' command takes two required operands");
register_command(cmd_ctx, xscale_cmd, "cache_clean_address", xscale_handle_cache_clean_address_command, COMMAND_ANY, NULL);
register_command(cmd_ctx, xscale_cmd, "cache_info", xscale_handle_cache_info_command, COMMAND_EXEC, NULL);
- register_command(cmd_ctx, xscale_cmd, "virt2phys", xscale_handle_virt2phys_command, COMMAND_EXEC, NULL);
register_command(cmd_ctx, xscale_cmd, "mmu", xscale_handle_mmu_command, COMMAND_EXEC, "['enable'|'disable'] the MMU");
register_command(cmd_ctx, xscale_cmd, "icache", xscale_handle_idcache_command, COMMAND_EXEC, "['enable'|'disable'] the ICache");
register_command(cmd_ctx, xscale_cmd, "dcache", xscale_handle_idcache_command, COMMAND_EXEC, "['enable'|'disable'] the DCache");
-
+
register_command(cmd_ctx, xscale_cmd, "vector_catch", xscale_handle_idcache_command, COMMAND_EXEC, "<mask> of vectors that should be catched");
-
- register_command(cmd_ctx, xscale_cmd, "trace_buffer", xscale_handle_trace_buffer_command, COMMAND_EXEC, "<enable|disable> ['fill'|'wrap']");
- register_command(cmd_ctx, xscale_cmd, "dump_trace_buffer", xscale_handle_dump_trace_buffer_command, COMMAND_EXEC, "dump content of trace buffer");
+ register_command(cmd_ctx, xscale_cmd, "trace_buffer", xscale_handle_trace_buffer_command, COMMAND_EXEC, "<enable|disable> ['fill' [n]|'wrap']");
+
+ register_command(cmd_ctx, xscale_cmd, "dump_trace", xscale_handle_dump_trace_command, COMMAND_EXEC, "dump content of trace buffer to <file>");
+ register_command(cmd_ctx, xscale_cmd, "analyze_trace", xscale_handle_analyze_trace_buffer_command, COMMAND_EXEC, "analyze content of trace buffer");
+ register_command(cmd_ctx, xscale_cmd, "trace_image", xscale_handle_trace_image_command,
+ COMMAND_EXEC, "load image from <file> [base address]");
+
+ register_command(cmd_ctx, xscale_cmd, "cp15", xscale_handle_cp15, COMMAND_EXEC, "access coproc 15 <register> [value]");
+ register_command(cmd_ctx, xscale_cmd, "fast_memory_access", handle_xscale_fast_memory_access_command,
+ COMMAND_ANY, "use fast memory accesses instead of slower but potentially unsafe slow accesses <enable|disable>");
+
armv4_5_register_commands(cmd_ctx);
-
+
return ERROR_OK;
}
Code Review / openocd.git / blobdiff