diff options
| author | Yu-Ping Wu <yupingso@chromium.org> | 2022-06-28 17:29:20 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-06-30 14:05:45 +0000 |
| commit | c7730dd9b66e8909de8f4c2a51247894559ab997 (patch) | |
| tree | 10e917a64340151f1c26484611141e5459ab5e90 /src/mainboard/google/corsola | |
| parent | 3fa36f63ae4ea6c55b67510ff1b16606f704e314 (diff) | |
mb/google/corsola: Decide EC-is-trusted logic by board rev
Kingler and Krabby's rev 0 boards both have Cr50 instead of Ti50. In
order to support them with the new firmware where TPM_GOOGLE_TI50 is
selected, use the board rev to determine the EC-is-trusted logic.
BUG=b:237355198
TEST=emerge-corsola coreboot
BRANCH=none
Change-Id: I7797eafaa7a35355d241c4ea425a4716a35a7817
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65472
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Diffstat (limited to 'src/mainboard/google/corsola')
| -rw-r--r-- | src/mainboard/google/corsola/chromeos.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/mainboard/google/corsola/chromeos.c b/src/mainboard/google/corsola/chromeos.c index 7d36a170fd..9717f9c2e1 100644 --- a/src/mainboard/google/corsola/chromeos.c +++ b/src/mainboard/google/corsola/chromeos.c @@ -2,8 +2,10 @@ #include <bootmode.h> #include <boot/coreboot_tables.h> +#include <ec/google/chromeec/ec.h> #include <gpio.h> #include <security/tpm/tis.h> +#include <stdbool.h> #include "gpio.h" @@ -45,8 +47,21 @@ void fill_lb_gpios(struct lb_gpios *gpios) int get_ec_is_trusted(void) { + uint32_t rev; + bool has_cr50 = false; + + /* + * Kingler and Krabby's rev 0 boards both use Cr50 instead of Ti50. In order to share + * the same firmware with newer rev, get the board rev from CBI, and ignore + * TPM_GOOGLE_TI50 when rev is 0. + */ + if (CONFIG(BOARD_GOOGLE_KINGLER) || CONFIG(BOARD_GOOGLE_KRABBY)) { + if (google_chromeec_cbi_get_board_version(&rev) == 0 && rev == 0) + has_cr50 = true; + } + /* With Ti50, VB2_CONTEXT_EC_TRUSTED should be set according to the boot mode. */ - if (CONFIG(TPM_GOOGLE_TI50)) + if (CONFIG(TPM_GOOGLE_TI50) && !has_cr50) return 0; /* EC is trusted if not in RW. This is active low. */ |