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ectool command to print panic data

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This can be useful when the EC reboots but we don't have access to the
EC console.

BUG=chrome-os-partner:20548
TEST=Manual
BRANCH=None

Change-Id: I0b762011860d7802ffbc208ffa42920fa6ed098d
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/60220
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This commit is contained in:
Vic Yang
2013-06-27 21:49:00 +08:00
committed by ChromeBot
parent 31439d13e4
commit bbbc7ebc5b
1 changed files with 67 additions and 0 deletions
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67
util/ectool.c
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@@ -18,6 +18,7 @@
#include "ectool.h"
#include "lightbar.h"
#include "lock/gec_lock.h"
#include "panic.h"
/* Don't use a macro where an inline will do... */
static inline int MIN(int a, int b) { return a < b ? a : b; }
@@ -102,6 +103,8 @@ const char help_str[] =
" Set the color of LED\n"
" lightbar [CMDS]\n"
" Various lightbar control commands\n"
" panicinfo\n"
" Prints saved panic info\n"
" port80flood\n"
" Rapidly write bytes to port 80\n"
" powerinfo\n"
@@ -1673,6 +1676,69 @@ int cmd_kbpress(int argc, char *argv[])
}
static void print_panic_reg(int regnum, const uint32_t *regs, int index)
{
static const char * const regname[] = {
"r0 ", "r1 ", "r2 ", "r3 ", "r4 ",
"r5 ", "r6 ", "r7 ", "r8 ", "r9 ",
"r10", "r11", "r12", "sp ", "lr ",
"pc "};
printf("%s:", regname[regnum]);
if (regs)
printf("%08x", regs[index]);
else
printf(" ");
printf((regnum & 3) == 3 ? "\n" : " ");
}
int cmd_panic_info(int argc, char *argv[])
{
char out[EC_HOST_PARAM_SIZE];
int rv;
struct panic_data *pdata = (struct panic_data *)out;
const uint32_t *lregs = pdata->regs;
const uint32_t *sregs = NULL;
int in_handler;
int i;
rv = ec_command(EC_CMD_GET_PANIC_INFO, 0, NULL, 0, out, sizeof(out));
if (rv < 0)
return rv;
if (rv == 0) {
printf("No panic data.\n");
return 0;
}
printf("Saved panic data:%s\n",
(pdata->flags & PANIC_DATA_FLAG_OLD_HOSTCMD ? "" : " (NEW)"));
in_handler = ((pdata->regs[11] & 0xf) == 1 ||
(pdata->regs[11] & 0xf) == 9);
if (pdata->flags & PANIC_DATA_FLAG_FRAME_VALID)
sregs = pdata->frame;
printf("=== %s EXCEPTION: %02x ====== xPSR: %08x ===\n",
in_handler ? "HANDLER" : "PROCESS",
lregs[1] & 0xff, sregs ? sregs[7] : -1);
for (i = 0; i < 4; ++i)
print_panic_reg(i, sregs, i);
for (i = 4; i < 10; ++i)
print_panic_reg(i, lregs, i - 1);
print_panic_reg(10, lregs, 9);
print_panic_reg(11, lregs, 10);
print_panic_reg(12, sregs, 4);
print_panic_reg(13, lregs, in_handler ? 2 : 0);
print_panic_reg(14, sregs, 5);
print_panic_reg(15, sregs, 6);
return 0;
}
int cmd_power_info(int argc, char *argv[])
{
struct ec_response_power_info r;
@@ -3083,6 +3149,7 @@ const struct command commands[] = {
{"lightbar", cmd_lightbar},
{"keyconfig", cmd_keyconfig},
{"keyscan", cmd_keyscan},
{"panicinfo", cmd_panic_info},
{"powerinfo", cmd_power_info},
{"pstoreinfo", cmd_pstore_info},
{"pstoreread", cmd_pstore_read},