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target: Add test bench for memory access functions 

Change-Id: I86e6fe4d0b4d580389ae5e1d3f4813d1e25b2613
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/1629
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
__archive__
Andreas Fritiofson 2013-12-29 15:22:39 +01:00 committed by Spencer Oliver
parent cb6836f923
commit e65817653f
1 changed files with 199 additions and 0 deletions
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199
src/target/target.c
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@ -5642,6 +5642,198 @@ COMMAND_HANDLER(handle_ps_command)
}
}
static void binprint(struct command_context *cmd_ctx, const char *text, const uint8_t *buf, int size)
{
if (text != NULL)
command_print_sameline(cmd_ctx, "%s", text);
for (int i = 0; i < size; i++)
command_print_sameline(cmd_ctx, " %02x", buf[i]);
command_print(cmd_ctx, " ");
}
COMMAND_HANDLER(handle_test_mem_access_command)
{
struct target *target = get_current_target(CMD_CTX);
uint32_t test_size;
int retval = ERROR_OK;
if (target->state != TARGET_HALTED) {
LOG_INFO("target not halted !!");
return ERROR_FAIL;
}
if (CMD_ARGC != 1)
return ERROR_COMMAND_SYNTAX_ERROR;
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], test_size);
/* Test reads */
size_t num_bytes = test_size + 4;
struct working_area *wa = NULL;
retval = target_alloc_working_area(target, num_bytes, &wa);
if (retval != ERROR_OK) {
LOG_ERROR("Not enough working area");
return ERROR_FAIL;
}
uint8_t *test_pattern = malloc(num_bytes);
for (size_t i = 0; i < num_bytes; i++)
test_pattern[i] = rand();
retval = target_write_memory(target, wa->address, 1, num_bytes, test_pattern);
if (retval != ERROR_OK) {
LOG_ERROR("Test pattern write failed");
goto out;
}
for (int host_offset = 0; host_offset <= 1; host_offset++) {
for (int size = 1; size <= 4; size *= 2) {
for (int offset = 0; offset < 4; offset++) {
uint32_t count = test_size / size;
size_t host_bufsiz = (count + 2) * size + host_offset;
uint8_t *read_ref = malloc(host_bufsiz);
uint8_t *read_buf = malloc(host_bufsiz);
for (size_t i = 0; i < host_bufsiz; i++) {
read_ref[i] = rand();
read_buf[i] = read_ref[i];
}
command_print_sameline(CMD_CTX,
"Test read %d x %d @ %d to %saligned buffer: ", count,
size, offset, host_offset ? "un" : "");
struct duration bench;
duration_start(&bench);
retval = target_read_memory(target, wa->address + offset, size, count,
read_buf + size + host_offset);
duration_measure(&bench);
if (retval == ERROR_TARGET_UNALIGNED_ACCESS) {
command_print(CMD_CTX, "Unsupported alignment");
goto next;
} else if (retval != ERROR_OK) {
command_print(CMD_CTX, "Memory read failed");
goto next;
}
/* replay on host */
memcpy(read_ref + size + host_offset, test_pattern + offset, count * size);
/* check result */
int result = memcmp(read_ref, read_buf, host_bufsiz);
if (result == 0) {
command_print(CMD_CTX, "Pass in %fs (%0.3f KiB/s)",
duration_elapsed(&bench),
duration_kbps(&bench, count * size));
} else {
command_print(CMD_CTX, "Compare failed");
binprint(CMD_CTX, "ref:", read_ref, host_bufsiz);
binprint(CMD_CTX, "buf:", read_buf, host_bufsiz);
}
next:
free(read_ref);
free(read_buf);
}
}
}
out:
free(test_pattern);
if (wa != NULL)
target_free_working_area(target, wa);
/* Test writes */
num_bytes = test_size + 4 + 4 + 4;
retval = target_alloc_working_area(target, num_bytes, &wa);
if (retval != ERROR_OK) {
LOG_ERROR("Not enough working area");
return ERROR_FAIL;
}
test_pattern = malloc(num_bytes);
for (size_t i = 0; i < num_bytes; i++)
test_pattern[i] = rand();
for (int host_offset = 0; host_offset <= 1; host_offset++) {
for (int size = 1; size <= 4; size *= 2) {
for (int offset = 0; offset < 4; offset++) {
uint32_t count = test_size / size;
size_t host_bufsiz = count * size + host_offset;
uint8_t *read_ref = malloc(num_bytes);
uint8_t *read_buf = malloc(num_bytes);
uint8_t *write_buf = malloc(host_bufsiz);
for (size_t i = 0; i < host_bufsiz; i++)
write_buf[i] = rand();
command_print_sameline(CMD_CTX,
"Test write %d x %d @ %d from %saligned buffer: ", count,
size, offset, host_offset ? "un" : "");
retval = target_write_memory(target, wa->address, 1, num_bytes, test_pattern);
if (retval != ERROR_OK) {
command_print(CMD_CTX, "Test pattern write failed");
goto nextw;
}
/* replay on host */
memcpy(read_ref, test_pattern, num_bytes);
memcpy(read_ref + size + offset, write_buf + host_offset, count * size);
struct duration bench;
duration_start(&bench);
retval = target_write_memory(target, wa->address + size + offset, size, count,
write_buf + host_offset);
duration_measure(&bench);
if (retval == ERROR_TARGET_UNALIGNED_ACCESS) {
command_print(CMD_CTX, "Unsupported alignment");
goto nextw;
} else if (retval != ERROR_OK) {
command_print(CMD_CTX, "Memory write failed");
goto nextw;
}
/* read back */
retval = target_read_memory(target, wa->address, 1, num_bytes, read_buf);
if (retval != ERROR_OK) {
command_print(CMD_CTX, "Test pattern write failed");
goto nextw;
}
/* check result */
int result = memcmp(read_ref, read_buf, num_bytes);
if (result == 0) {
command_print(CMD_CTX, "Pass in %fs (%0.3f KiB/s)",
duration_elapsed(&bench),
duration_kbps(&bench, count * size));
} else {
command_print(CMD_CTX, "Compare failed");
binprint(CMD_CTX, "ref:", read_ref, num_bytes);
binprint(CMD_CTX, "buf:", read_buf, num_bytes);
}
nextw:
free(read_ref);
free(read_buf);
}
}
}
free(test_pattern);
if (wa != NULL)
target_free_working_area(target, wa);
return retval;
}
static const struct command_registration target_exec_command_handlers[] = {
{
.name = "fast_load_image",
@ -5861,6 +6053,13 @@ static const struct command_registration target_exec_command_handlers[] = {
.help = "list all tasks ",
.usage = " ",
},
{
.name = "test_mem_access",
.handler = handle_test_mem_access_command,
.mode = COMMAND_EXEC,
.help = "Test the target's memory access functions",
.usage = "size",
},
COMMAND_REGISTRATION_DONE
};