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Add x86indebug command

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Prints all x86 signal power state transitions at interrupt level, so
we can see lines toggle more precisely.

BUG=chrome-os-partner:12229
TEST=manual

1. power on system
2. no debug output that looks like [501.001742 x86 in 0x563f]
3. reboot
4. x86indebug 0xffff
5. power on system
6. should see lots of lines that look like [501.001742 x86 in 0x563f]

Change-Id: Ie3b346ee4d4beee3f13ac1245f1eb022b48dabf4
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/29192
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
This commit is contained in:
Randall Spangler
2012-08-03 12:41:08 -07:00
committed by Gerrit
parent 5e996478c9
commit cf20b3e4f0
1 changed files with 27 additions and 0 deletions
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27
common/x86_power.c
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@@ -98,6 +98,7 @@ static const char * const state_names[] = {
static enum x86_state state = X86_G3; /* Current state */
static uint32_t in_signals; /* Current input signal states (IN_PGOOD_*) */
static uint32_t in_want; /* Input signal state we're waiting for */
static uint32_t in_debug; /* Signal values which print debug output */
static int want_g3_exit; /* Should we exit the G3 state? */
static int throttle_cpu; /* Throttle CPU? */
@@ -146,6 +147,9 @@ static void update_in_signals(void)
/* Copy SUSWARN# signal from PCH to SUSACK# */
gpio_set_level(GPIO_PCH_SUSACKn, v);
if ((in_signals & in_debug) != (inew & in_debug))
CPRINTF("[%T x86 in 0x%04x]\n", inew);
in_signals = inew;
}
@@ -675,6 +679,29 @@ DECLARE_CONSOLE_COMMAND(x86shutdown, command_x86shutdown,
"Force x86 shutdown",
NULL);
static int command_x86indebug(int argc, char **argv)
{
char *e;
/* If one arg, set the mask */
if (argc == 2) {
int m = strtoi(argv[1], &e, 0);
if (*e)
return EC_ERROR_PARAM1;
in_debug = m;
}
/* Print the mask */
ccprintf("x86 in: 0x%04x\n", in_signals);
ccprintf("debug mask: 0x%04x\n", in_debug);
return EC_SUCCESS;
};
DECLARE_CONSOLE_COMMAND(x86indebug, command_x86indebug,
"[mask]",
"Get/set x86 input debug mask",
NULL);
/*****************************************************************************/
/* Host commands */