diff options
| -rw-r--r-- | src/ec/google/wilco/acpi/ec_ram.asl | 2 | ||||
| -rw-r--r-- | src/ec/google/wilco/commands.c | 8 | ||||
| -rw-r--r-- | src/ec/google/wilco/commands.h | 11 |
3 files changed, 21 insertions, 0 deletions
diff --git a/src/ec/google/wilco/acpi/ec_ram.asl b/src/ec/google/wilco/acpi/ec_ram.asl index 59bd78e656..0de39475bc 100644 --- a/src/ec/google/wilco/acpi/ec_ram.asl +++ b/src/ec/google/wilco/acpi/ec_ram.asl @@ -123,6 +123,8 @@ Name (OERL, Package () { 0x3a, 0x02, RD }) /* Event: Rotation Lock */ Name (BCCY, Package () { 0x3e, 0xffff, RD }) /* BCACHE: Cycle Count */ +Name (ESGN, Package () { 0x5c, 0xff, RD }) /* Indicate EC uses signed FW */ + /* * EC RAM WRITE */ diff --git a/src/ec/google/wilco/commands.c b/src/ec/google/wilco/commands.c index 1c7646106c..da04e2759b 100644 --- a/src/ec/google/wilco/commands.c +++ b/src/ec/google/wilco/commands.c @@ -14,6 +14,7 @@ */ #include <console/console.h> +#include <ec/acpi/ec.h> #include <stdint.h> #include <string.h> @@ -167,3 +168,10 @@ int wilco_ec_change_wake(uint8_t source, enum ec_wake_change change) wake_source, ARRAY_SIZE(wake_source), NULL, 0); } + +int wilco_ec_signed_fw(void) +{ + ec_set_ports(CONFIG_EC_BASE_ACPI_COMMAND, + CONFIG_EC_BASE_ACPI_DATA); + return !!ec_read(EC_RAM_SIGNED_FW); +} diff --git a/src/ec/google/wilco/commands.h b/src/ec/google/wilco/commands.h index 9c1685b293..42bb4f2edd 100644 --- a/src/ec/google/wilco/commands.h +++ b/src/ec/google/wilco/commands.h @@ -51,6 +51,8 @@ enum { }; enum ec_ram_addr { + /* Indicate if EC uses signed firmware */ + EC_RAM_SIGNED_FW = 0x5c, /* Indicate support for S0ix */ EC_RAM_S0IX_SUPPORT = 0xb8, }; @@ -285,4 +287,13 @@ enum ec_acpi_wake_events { EC_ACPI_WAKE_RTC = BIT(5), /* Wake up by RTC */ }; +/** + * wilco_ec_signed_fw + * + * Indicate if the EC uses signed firmware. + * + * Returns 1 if EC uses signed firmware, otherwise returns 0 + */ +int wilco_ec_signed_fw(void); + #endif /* EC_GOOGLE_WILCO_COMMANDS_H */ |