diff options
| author | Keith Short <keithshort@chromium.org> | 2019-01-15 10:32:22 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-01-17 13:02:08 +0000 |
| commit | d1215269a7bc9b3df82548a7ebdb0e468b18e1df (patch) | |
| tree | a31d623f7f8b2a06d1f66bfb8fb11f1e081478b0 /src | |
| parent | e371d421137901043ba495f8e4f5063be26b6764 (diff) | |
| download | coreboot-d1215269a7bc9b3df82548a7ebdb0e468b18e1df.tar.xz | |
src/mainboard/google/sarien: query recovery mode from Cr50
On the Sarien/Arcada platforms, the EC is not trusted to provide
the state of the ESC+REFRESH+PWR recovery combination. On these
platforms the Cr50 latches the state of REFRESH+PWR for use as the
recovery mode key combination.
BUG=b:122715254
BRANCH=none
TEST=Verify recovery mode screen shown after pressing REFRESH+PWR
Change-Id: If336e9d7016987be151ab30d5c037ead3a998fe0
Signed-off-by: Keith Short <keithshort@chromium.org>
Reviewed-on: https://review.coreboot.org/c/30937
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/sarien/chromeos.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/mainboard/google/sarien/chromeos.c b/src/mainboard/google/sarien/chromeos.c index 1e77cd9ff8..8b2090e5b0 100644 --- a/src/mainboard/google/sarien/chromeos.c +++ b/src/mainboard/google/sarien/chromeos.c @@ -19,6 +19,8 @@ #include <soc/gpio.h> #include <variant/gpio.h> #include <vendorcode/google/chromeos/chromeos.h> +#include <security/tpm/tss.h> + void fill_lb_gpios(struct lb_gpios *gpios) { @@ -70,7 +72,16 @@ int get_write_protect_state(void) int get_recovery_mode_switch(void) { - return cros_get_gpio_value(CROS_GPIO_REC); + uint8_t recovery_button_state; + int recovery_mode_switch = 0; + + if (cros_get_gpio_value(CROS_GPIO_REC)) + recovery_mode_switch = 1; + else if (tlcl_cr50_get_recovery_button(&recovery_button_state) + == TPM_SUCCESS) + recovery_mode_switch = recovery_button_state; + + return recovery_mode_switch; } int get_lid_switch(void) |