* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
- * Copyright (C) 2007-2009 Øyvind Harboe *
+ * Copyright (C) 2007-2010 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2008, Duane Ellis *
#include <helper/time_support.h>
#include <jtag/jtag.h>
+#include <flash/nor/core.h>
#include "target.h"
#include "target_type.h"
return ERROR_OK;
}
+/**
+ * Make the target (re)start executing using its saved execution
+ * context (possibly with some modifications).
+ *
+ * @param target Which target should start executing.
+ * @param current True to use the target's saved program counter instead
+ * of the address parameter
+ * @param address Optionally used as the program counter.
+ * @param handle_breakpoints True iff breakpoints at the resumption PC
+ * should be skipped. (For example, maybe execution was stopped by
+ * such a breakpoint, in which case it would be counterprodutive to
+ * let it re-trigger.
+ * @param debug_execution False if all working areas allocated by OpenOCD
+ * should be released and/or restored to their original contents.
+ * (This would for example be true to run some downloaded "helper"
+ * algorithm code, which resides in one such working buffer and uses
+ * another for data storage.)
+ *
+ * @todo Resolve the ambiguity about what the "debug_execution" flag
+ * signifies. For example, Target implementations don't agree on how
+ * it relates to invalidation of the register cache, or to whether
+ * breakpoints and watchpoints should be enabled. (It would seem wrong
+ * to enable breakpoints when running downloaded "helper" algorithms
+ * (debug_execution true), since the breakpoints would be set to match
+ * target firmware being debugged, not the helper algorithm.... and
+ * enabling them could cause such helpers to malfunction (for example,
+ * by overwriting data with a breakpoint instruction. On the other
+ * hand the infrastructure for running such helpers might use this
+ * procedure but rely on hardware breakpoint to detect termination.)
+ */
int target_resume(struct target *target, int current, uint32_t address, int handle_breakpoints, int debug_execution)
{
int retval;
return ERROR_FAIL;
}
- /* note that resume *must* be asynchronous. The CPU can halt before we poll. The CPU can
- * even halt at the current PC as a result of a software breakpoint being inserted by (a bug?)
- * the application.
+ /* note that resume *must* be asynchronous. The CPU can halt before
+ * we poll. The CPU can even halt at the current PC as a result of
+ * a software breakpoint being inserted by (a bug?) the application.
*/
if ((retval = target->type->resume(target, current, address, handle_breakpoints, debug_execution)) != ERROR_OK)
return retval;
+ /* Invalidate any cached protect/erase/... flash status, since
+ * almost all targets will now be able modify the flash by
+ * themselves. We want flash drivers and infrastructure to
+ * be able to rely on (non-invalidated) cached state.
+ *
+ * For now we require that algorithms provided by OpenOCD are
+ * used only by code which properly maintains that cached state.
+ * state
+ *
+ * REVISIT do the same for NAND ; maybe other flash flavors too...
+ */
+ if (!target->running_alg)
+ nor_resume(target);
return retval;
}
return target->type->soft_reset_halt_imp(target);
}
-static int target_run_algorithm_imp(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_param, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info)
+/**
+ * Downloads a target-specific native code algorithm to the target,
+ * and executes it. * Note that some targets may need to set up, enable,
+ * and tear down a breakpoint (hard or * soft) to detect algorithm
+ * termination, while others may support lower overhead schemes where
+ * soft breakpoints embedded in the algorithm automatically terminate the
+ * algorithm.
+ *
+ * @param target used to run the algorithm
+ * @param arch_info target-specific description of the algorithm.
+ */
+int target_run_algorithm(struct target *target,
+ int num_mem_params, struct mem_param *mem_params,
+ int num_reg_params, struct reg_param *reg_param,
+ uint32_t entry_point, uint32_t exit_point,
+ int timeout_ms, void *arch_info)
{
+ int retval = ERROR_FAIL;
+
if (!target_was_examined(target))
{
LOG_ERROR("Target not examined yet");
- return ERROR_FAIL;
+ goto done;
+ }
+ if (target->type->run_algorithm) {
+ LOG_ERROR("Target type '%s' does not support %s",
+ target_type_name(target), __func__);
+ goto done;
}
- return target->type->run_algorithm_imp(target, num_mem_params, mem_params, num_reg_params, reg_param, entry_point, exit_point, timeout_ms, arch_info);
+
+ target->running_alg = true;
+ retval = target->type->run_algorithm(target,
+ num_mem_params, mem_params,
+ num_reg_params, reg_param,
+ entry_point, exit_point, timeout_ms, arch_info);
+ target->running_alg = false;
+
+done:
+ return retval;
}
+
int target_read_memory(struct target *target,
uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer)
{
}
-int target_run_algorithm(struct target *target,
- int num_mem_params, struct mem_param *mem_params,
- int num_reg_params, struct reg_param *reg_param,
- uint32_t entry_point, uint32_t exit_point,
- int timeout_ms, void *arch_info)
-{
- return target->type->run_algorithm(target,
- num_mem_params, mem_params, num_reg_params, reg_param,
- entry_point, exit_point, timeout_ms, arch_info);
-}
-
/**
* Reset the @c examined flag for the given target.
* Pure paranoia -- targets are zeroed on allocation.
type->soft_reset_halt_imp = target->type->soft_reset_halt;
type->soft_reset_halt = target_soft_reset_halt_imp;
- type->run_algorithm_imp = target->type->run_algorithm;
- type->run_algorithm = target_run_algorithm_imp;
-
/* Sanity-check MMU support ... stub in what we must, to help
* implement it in stages, but warn if we need to do so.
*/
return ERROR_OK;
}
-static void target_call_event_callbacks_all(enum target_event e) {
- struct target *target;
- target = all_targets;
- while (target) {
- target_call_event_callbacks(target, e);
- target = target->next;
- }
-}
-
/* process target state changes */
static int handle_target(void *priv)
{
Jim_Interp *interp = (Jim_Interp *)priv;
int retval = ERROR_OK;
+ if (!is_jtag_poll_safe())
+ {
+ /* polling is disabled currently */
+ return ERROR_OK;
+ }
+
/* we do not want to recurse here... */
static int recursive = 0;
if (! recursive)
int did_something = 0;
if (runSrstAsserted)
{
- LOG_INFO("Waking up GDB, srst asserted detected.");
- target_call_event_callbacks_all(TARGET_EVENT_GDB_HALT);
+ LOG_INFO("srst asserted detected, running srst_asserted proc.");
Jim_Eval(interp, "srst_asserted");
did_something = 1;
}
}
if (runPowerDropout)
{
- LOG_INFO("Waking up GDB, power dropout detected.");
- target_call_event_callbacks_all(TARGET_EVENT_GDB_HALT);
+ LOG_INFO("Power dropout detected, running power_dropout proc.");
Jim_Eval(interp, "power_dropout");
did_something = 1;
}
return retval;
}
+typedef int (*target_write_fn)(struct target *target,
+ uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
+
+static int target_write_memory_fast(struct target *target,
+ uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer)
+{
+ return target_write_buffer(target, address, size * count, buffer);
+}
+
+static int target_fill_mem(struct target *target,
+ uint32_t address,
+ target_write_fn fn,
+ unsigned data_size,
+ /* value */
+ uint32_t b,
+ /* count */
+ unsigned c)
+{
+ /* We have to write in reasonably large chunks to be able
+ * to fill large memory areas with any sane speed */
+ const unsigned chunk_size = 16384;
+ uint8_t *target_buf = malloc(chunk_size * data_size);
+ if (target_buf == NULL)
+ {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+
+ for (unsigned i = 0; i < chunk_size; i ++)
+ {
+ switch (data_size)
+ {
+ case 4:
+ target_buffer_set_u32(target, target_buf + i*data_size, b);
+ break;
+ case 2:
+ target_buffer_set_u16(target, target_buf + i*data_size, b);
+ break;
+ case 1:
+ target_buffer_set_u8(target, target_buf + i*data_size, b);
+ break;
+ default:
+ exit(-1);
+ }
+ }
+
+ int retval = ERROR_OK;
+
+ for (unsigned x = 0; x < c; x += chunk_size)
+ {
+ unsigned current;
+ current = c - x;
+ if (current > chunk_size)
+ {
+ current = chunk_size;
+ }
+ int retval = fn(target, address + x * data_size, data_size, current, target_buf);
+ if (retval != ERROR_OK)
+ {
+ break;
+ }
+ /* avoid GDB timeouts */
+ keep_alive();
+ }
+ free(target_buf);
+
+ return retval;
+}
+
+
COMMAND_HANDLER(handle_mw_command)
{
if (CMD_ARGC < 2)
return ERROR_COMMAND_SYNTAX_ERROR;
}
bool physical=strcmp(CMD_ARGV[0], "phys")==0;
- int (*fn)(struct target *target,
- uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
+ target_write_fn fn;
if (physical)
{
CMD_ARGC--;
fn=target_write_phys_memory;
} else
{
- fn=target_write_memory;
+ fn = target_write_memory_fast;
}
if ((CMD_ARGC < 2) || (CMD_ARGC > 3))
return ERROR_COMMAND_SYNTAX_ERROR;
struct target *target = get_current_target(CMD_CTX);
unsigned wordsize;
- uint8_t value_buf[4];
switch (CMD_NAME[2])
{
case 'w':
wordsize = 4;
- target_buffer_set_u32(target, value_buf, value);
break;
case 'h':
wordsize = 2;
- target_buffer_set_u16(target, value_buf, value);
break;
case 'b':
wordsize = 1;
- value_buf[0] = value;
break;
default:
return ERROR_COMMAND_SYNTAX_ERROR;
}
- for (unsigned i = 0; i < count; i++)
- {
- int retval = fn(target,
- address + i * wordsize, wordsize, 1, value_buf);
- if (ERROR_OK != retval)
- return retval;
- keep_alive();
- }
-
- return ERROR_OK;
+ return target_fill_mem(target, address, fn, wordsize, value, count);
}
static COMMAND_HELPER(parse_load_image_command_CMD_ARGV, struct image *image,
Jim_GetOptInfo goi;
Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
- if (goi.argc != 2 && goi.argc != 3)
+ /* danger! goi.argc will be modified below! */
+ argc = goi.argc;
+
+ if (argc != 2 && argc != 3)
{
Jim_SetResult_sprintf(goi.interp,
"usage: %s <address> <data> [<count>]", cmd_name);
return JIM_ERR;
}
+
jim_wide a;
int e = Jim_GetOpt_Wide(&goi, &a);
if (e != JIM_OK)
return e;
jim_wide c = 1;
- if (goi.argc == 3)
+ if (argc == 3)
{
e = Jim_GetOpt_Wide(&goi, &c);
if (e != JIM_OK)
}
struct target *target = Jim_CmdPrivData(goi.interp);
- uint8_t target_buf[32];
+ unsigned data_size;
if (strcasecmp(cmd_name, "mww") == 0) {
- target_buffer_set_u32(target, target_buf, b);
- b = 4;
+ data_size = 4;
}
else if (strcasecmp(cmd_name, "mwh") == 0) {
- target_buffer_set_u16(target, target_buf, b);
- b = 2;
+ data_size = 2;
}
else if (strcasecmp(cmd_name, "mwb") == 0) {
- target_buffer_set_u8(target, target_buf, b);
- b = 1;
+ data_size = 1;
} else {
LOG_ERROR("command '%s' unknown: ", cmd_name);
return JIM_ERR;
}
- for (jim_wide x = 0; x < c; x++)
- {
- e = target_write_memory(target, a, b, 1, target_buf);
- if (e != ERROR_OK)
- {
- Jim_SetResult_sprintf(interp,
- "Error writing @ 0x%08x: %d\n", (int)(a), e);
- return JIM_ERR;
- }
- /* b = width */
- a = a + b;
- }
- return JIM_OK;
+ return (target_fill_mem(target, a, target_write_memory_fast, data_size, b, c) == ERROR_OK) ? JIM_OK : JIM_ERR;
}
static int jim_target_md(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
Jim_GetOptInfo goi;
Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
- if ((goi.argc == 2) || (goi.argc == 3))
+ /* danger! goi.argc will be modified below! */
+ argc = goi.argc;
+
+ if ((argc != 1) && (argc != 2))
{
Jim_SetResult_sprintf(goi.interp,
"usage: %s <address> [<count>]", cmd_name);
return JIM_ERR;
}
jim_wide c;
- if (goi.argc) {
+ if (argc == 2) {
e = Jim_GetOpt_Wide(&goi, &c);
if (e != JIM_OK) {
return JIM_ERR;
case 4:
for (x = 0; x < 16 && x < y; x += 4)
{
- z = target_buffer_get_u32(target, &(target_buf[ x * 4 ]));
+ z = target_buffer_get_u32(target, &(target_buf[ x ]));
Jim_fprintf(interp, interp->cookie_stdout, "%08x ", (int)(z));
}
for (; (x < 16) ; x += 4) {
case 2:
for (x = 0; x < 16 && x < y; x += 2)
{
- z = target_buffer_get_u16(target, &(target_buf[ x * 2 ]));
+ z = target_buffer_get_u16(target, &(target_buf[ x ]));
Jim_fprintf(interp, interp->cookie_stdout, "%04x ", (int)(z));
}
for (; (x < 16) ; x += 2) {
case 1:
default:
for (x = 0 ; (x < 16) && (x < y) ; x += 1) {
- z = target_buffer_get_u8(target, &(target_buf[ x * 4 ]));
+ z = target_buffer_get_u8(target, &(target_buf[ x ]));
Jim_fprintf(interp, interp->cookie_stdout, "%02x ", (int)(z));
}
for (; (x < 16) ; x += 1) {
return JIM_OK;
}
+static int jim_target_halt_gdb(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+ if (argc != 1)
+ {
+ Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
+ return JIM_ERR;
+ }
+ struct target *target = Jim_CmdPrivData(interp);
+
+ if (target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT) != ERROR_OK)
+ return JIM_ERR;
+
+ return JIM_OK;
+}
+
static int jim_target_poll(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
if (argc != 1)
.jim_handler = jim_target_examine,
.help = "used internally for reset processing",
},
+ {
+ .name = "arp_halt_gdb",
+ .mode = COMMAND_EXEC,
+ .jim_handler = jim_target_halt_gdb,
+ .help = "used internally for reset processing to halt GDB",
+ },
{
.name = "arp_poll",
.mode = COMMAND_EXEC,
projects / openocd / blobdiff