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-rw-r--r--src/mainboard/google/auron/chromeos.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/mainboard/google/auron/chromeos.c b/src/mainboard/google/auron/chromeos.c
index 50eeddce0a..f449c9cf7f 100644
--- a/src/mainboard/google/auron/chromeos.c
+++ b/src/mainboard/google/auron/chromeos.c
@@ -8,6 +8,13 @@
/* SPI Write protect is GPIO 16 */
#define CROS_WP_GPIO 58
+/* EC_IN_RW is GPIO 25 in samus and 14 otherwise */
+#if CONFIG(BOARD_GOOGLE_SAMUS)
+#define EC_IN_RW_GPIO 25
+#else
+#define EC_IN_RW_GPIO 14
+#endif
+
void fill_lb_gpios(struct lb_gpios *gpios)
{
struct lb_gpio chromeos_gpios[] = {
@@ -32,3 +39,9 @@ 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 !get_gpio(EC_IN_RW_GPIO);
+}