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/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* 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"
static int command_mem_dump(int argc, char **argv)
{
volatile uint32_t *address;
uint32_t value, num = 1, i;
char *e;
if (argc < 2)
return EC_ERROR_PARAM_COUNT;
address = (uint32_t *)(uintptr_t)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++) {
value = address[i];
if (0 == (i%4))
ccprintf("\n%08X: %08x", address+i, value);
else
ccprintf(" %08x", value);
cflush();
/* 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(md, command_mem_dump,
"addr [num]",
"dump num of words (4B) in memory",
NULL);
static int command_read_word(int argc, 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 's':
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
(rw, command_read_word,
"addr [.{b|s}] [value]",
"Read or write a word in memory optionally specifying the size",
NULL);
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