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author | Hsuan Ting Chen <roccochen@chromium.org> | 2021-08-12 15:47:06 +0800 |
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committer | Julius Werner <jwerner@chromium.org> | 2021-09-16 23:44:20 +0000 |
commit | 6260bf712a836762b18d80082505e981e040f4bc (patch) | |
tree | 70314d8702b2a8d3b293a570634f2bf7f7cb9434 /src/mainboard/google/rambi/chromeos.c | |
parent | 7a474a5bb73ba66eb32da930315e53d5fd74e207 (diff) | |
download | coreboot-6260bf712a836762b18d80082505e981e040f4bc.tar.gz |
vboot_logic: Set VB2_CONTEXT_EC_TRUSTED in verstage_main
vboot_reference is introducing a new field (ctx) to store the current
boot mode in crrev/c/2944250 (ctx->bootmode), which will be leveraged
in both vboot flow and elog_add_boot_reason in coreboot.
In current steps of deciding bootmode, a function vb2ex_ec_trusted
is required. This function checks gpio EC_IN_RW pin and will return
'trusted' only if EC is not in RW. Therefore, we need to implement
similar utilities in coreboot.
We will deprecate vb2ex_ec_trusted and use the flag,
VB2_CONTEXT_EC_TRUSTED, in vboot, vb2api_fw_phase1 and set that flag
in coreboot, verstage_main.
Also add a help function get_ec_is_trusted which needed to be
implemented per mainboard.
BUG=b:177196147, b:181931817
BRANCH=none
TEST=Test on trogdor if manual recovery works
Signed-off-by: Hsuan Ting Chen <roccochen@chromium.org>
Change-Id: I479c8f80e45cc524ba87db4293d19b29bdfa2192
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57048
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/rambi/chromeos.c')
-rw-r--r-- | src/mainboard/google/rambi/chromeos.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mainboard/google/rambi/chromeos.c b/src/mainboard/google/rambi/chromeos.c index f9a171820d..edc714eff5 100644 --- a/src/mainboard/google/rambi/chromeos.c +++ b/src/mainboard/google/rambi/chromeos.c @@ -8,6 +8,9 @@ /* The WP status pin lives on GPIO_SSUS_6 which is pad 36 in the SUS well. */ #define WP_STATUS_PAD 36 +/* The EC_IN_RW lives on SCGPIO59 */ +#define EC_IN_RW_PAD 59 + void fill_lb_gpios(struct lb_gpios *gpios) { struct lb_gpio chromeos_gpios[] = { @@ -43,3 +46,9 @@ void mainboard_chromeos_acpi_generate(void) { chromeos_acpi_gpio_generate(cros_gpios, ARRAY_SIZE(cros_gpios)); } + +int get_ec_is_trusted(void) +{ + /* EC is trusted if not in RW. */ + return !score_get_gpio(EC_IN_RW_PAD); +} |