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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>
This commit is contained in:
Keith Short 2019-01-15 10:32:22 -07:00 committed by Patrick Georgi
parent e371d42113
commit d1215269a7
1 changed files with 12 additions and 1 deletions
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13
src/mainboard/google/sarien/chromeos.c
View File

@ -19,6 +19,8 @@
#include <soc/gpio.h> #include <soc/gpio.h>
#include <variant/gpio.h> #include <variant/gpio.h>
#include <vendorcode/google/chromeos/chromeos.h> #include <vendorcode/google/chromeos/chromeos.h>
#include <security/tpm/tss.h>
void fill_lb_gpios(struct lb_gpios *gpios) void fill_lb_gpios(struct lb_gpios *gpios)
{ {
@ -70,7 +72,16 @@ int get_write_protect_state(void)
int get_recovery_mode_switch(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) int get_lid_switch(void)