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/* Copyright 2012 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* System module for Chrome EC */
#include "console.h"
#include "timer.h"
#include "util.h"
#include "watchdog.h"
enum format {
FMT_WORD,
FMT_HALF,
FMT_BYTE,
FMT_STRING,
};
#ifdef CONFIG_CMD_MD
static void show_val(uint32_t address, uint32_t index, enum format fmt)
{
uint32_t val;
uintptr_t ptr = address;
switch (fmt) {
case FMT_WORD:
if (0 == (index % 4))
ccprintf("\n%08X:", address + index * 4);
val = *((uint32_t *)ptr + index);
ccprintf(" %08x", val);
break;
case FMT_HALF:
if (0 == (index % 8))
ccprintf("\n%08X:", address + index * 2);
val = *((uint16_t *)ptr + index);
ccprintf(" %04x", val);
break;
case FMT_BYTE:
if (0 == (index % 16))
ccprintf("\n%08X:", address + index);
val = *((uint8_t *)ptr + index);
ccprintf(" %02x", val);
break;
case FMT_STRING:
if (0 == (index % 32))
ccprintf("\n%08X: ", address + index);
val = *((uint8_t *)ptr + index);
if (val >= ' ' && val <= '~')
ccprintf("%c", val);
else
ccprintf("\\x%02x", val);
break;
}
cflush();
}
static int command_mem_dump(int argc, const char **argv)
{
uint32_t address, i, num = 1;
char *e;
enum format fmt = FMT_WORD;
if (argc > 1) {
if ((argv[1][0] == '.') && (strlen(argv[1]) == 2)) {
switch (argv[1][1]) {
case 'b':
fmt = FMT_BYTE;
break;
case 'h':
fmt = FMT_HALF;
break;
case 's':
fmt = FMT_STRING;
break;
default:
return EC_ERROR_PARAM1;
}
argc--;
argv++;
}
}
if (argc < 2)
return EC_ERROR_PARAM_COUNT;
address = strtoi(argv[1], &e, 0);
if (*e)
return EC_ERROR_PARAM1;
if (argc >= 3)
num = strtoi(argv[2], &e, 0);
for (i = 0; i < num; i++) {
show_val(address, i, fmt);
/* Lots of output could take a while.
* Let other things happen, too */
if (!(i % 0x100)) {
watchdog_reload();
usleep(10 * MSEC);
}
}
ccprintf("\n");
cflush();
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND_FLAGS(
md, command_mem_dump, "[.b|.h|.s] addr [count]",
"dump memory values, optionally specifying the format",
CMD_FLAG_RESTRICTED);
#endif /* CONFIG_CMD_MD */
#ifdef CONFIG_CMD_RW
static int command_read_word(int argc, const char **argv)
{
volatile uint32_t *address;
uint32_t value;
unsigned access_size = 4;
unsigned argc_offs = 0;
char *e;
if (argc < 2)
return EC_ERROR_PARAM_COUNT;
if (argc > 2) {
if ((argv[1][0] == '.') && (strlen(argv[1]) == 2)) {
argc_offs = 1;
switch (argv[1][1]) {
case 'b':
access_size = 1;
break;
case 'h':
access_size = 2;
break;
default:
return EC_ERROR_PARAM1;
}
}
}
address = (uint32_t *)(uintptr_t)strtoi(argv[1 + argc_offs], &e, 0);
if (*e)
return EC_ERROR_PARAM1 + argc_offs;
/* Just reading? */
if ((argc - argc_offs) < 3) {
switch (access_size) {
case 1:
ccprintf("read 0x%p = 0x%02x\n", address,
*((uint8_t *)address));
break;
case 2:
ccprintf("read 0x%p = 0x%04x\n", address,
*((uint16_t *)address));
break;
default:
ccprintf("read 0x%p = 0x%08x\n", address, *address);
break;
}
return EC_SUCCESS;
}
/* Writing! */
value = strtoi(argv[2 + argc_offs], &e, 0);
if (*e)
return EC_ERROR_PARAM2 + argc_offs;
switch (access_size) {
case 1:
ccprintf("write 0x%p = 0x%02x\n", address, (uint8_t)value);
cflush(); /* Flush before writing in case this crashes */
*((uint8_t *)address) = (uint8_t)value;
break;
case 2:
ccprintf("write 0x%p = 0x%04x\n", address, (uint16_t)value);
cflush();
*((uint16_t *)address) = (uint16_t)value;
break;
default:
ccprintf("write 0x%p = 0x%02x\n", address, value);
cflush();
*address = value;
break;
}
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND_FLAGS(
rw, command_read_word, "[.b|.h] addr [value]",
"Read or write a word in memory optionally specifying the size",
CMD_FLAG_RESTRICTED);
#endif /* CONFIG_CMD_RW */
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