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ec/starlabs/merlin/ite: Don't attempt EC mirror without a counter 

If the variable `mirror_flag_attempts` isn't accessible, or doesn't
have a value, don't attempt to mirror the EC.

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: Ia39b2ce4ffcb8db3a335449c8bdb0d5c8a28a52c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76581
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
This commit is contained in:
Sean Rhodes 2023-07-18 12:07:29 +01:00 committed by Felix Held
parent e4fd561ab7
commit 981e61bde9
1 changed files with 16 additions and 23 deletions
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39
src/ec/starlabs/merlin/ite.c
View File

@ -31,38 +31,31 @@ static void ec_mirror_with_count(void)
{
unsigned int cmos_mirror_flag_counter = get_uint_option("mirror_flag_counter", UINT_MAX);
if (cmos_mirror_flag_counter != UINT_MAX) {
printk(BIOS_DEBUG, "ITE: mirror_flag_counter = %u\n", cmos_mirror_flag_counter);
if (cmos_mirror_flag_counter == UINT_MAX)
return;
/* Avoid boot loops by only trying a state change once */
if (cmos_mirror_flag_counter < MIRROR_ATTEMPTS) {
cmos_mirror_flag_counter++;
set_uint_option("mirror_flag_counter", cmos_mirror_flag_counter);
printk(BIOS_DEBUG, "ITE: Mirror attempt %u/%u.\n", cmos_mirror_flag_counter,
MIRROR_ATTEMPTS);
printk(BIOS_DEBUG, "ITE: mirror_flag_counter = %u\n", cmos_mirror_flag_counter);
/* Write the EC mirror flag */
ec_write(ECRAM_MIRROR_FLAG, MIRROR_ENABLED);
/* Avoid boot loops by only trying a state change once */
if (cmos_mirror_flag_counter < MIRROR_ATTEMPTS) {
cmos_mirror_flag_counter++;
set_uint_option("mirror_flag_counter", cmos_mirror_flag_counter);
printk(BIOS_DEBUG, "ITE: Mirror attempt %u/%u.\n", cmos_mirror_flag_counter,
MIRROR_ATTEMPTS);
/* Check what has been written */
if (ec_read(ECRAM_MIRROR_FLAG) == MIRROR_ENABLED)
poweroff();
} else {
/*
* If the mirror flags fails after 1 attempt, it will
* likely need a cold boot, or recovering.
*/
printk(BIOS_ERR, "ITE: Failed to mirror the EC in %u attempts!\n",
MIRROR_ATTEMPTS);
}
} else {
printk(BIOS_DEBUG, "ITE: Powering Off");
/* Write the EC mirror flag */
ec_write(ECRAM_MIRROR_FLAG, MIRROR_ENABLED);
/* Check what has been written */
if (ec_read(ECRAM_MIRROR_FLAG) == MIRROR_ENABLED)
poweroff();
} else {
/*
* If the mirror flags fails after 1 attempt, it will
* likely need a cold boot, or recovering.
*/
printk(BIOS_ERR, "ITE: Failed to mirror the EC in %u attempts!\n",
MIRROR_ATTEMPTS);
}
}