Spacecast: Check factory reset button to enter recovery mode
Recovery mode is selected by pressing the factory reset button contiuously
for 5 seconds after the device is powered on.
Change-Id: Ie39b2907fd846689ae790aeba34d36359624d052
Google-Bug-Id: 22507079
diff --git a/arch/arm/boards/optimus/optimus.c b/arch/arm/boards/optimus/optimus.c
index 01e993f..5b759ae 100644
--- a/arch/arm/boards/optimus/optimus.c
+++ b/arch/arm/boards/optimus/optimus.c
@@ -64,6 +64,8 @@
#ifdef CONFIG_SPI
//Legacy spi
+static bool recovery_mode = false;
+
static int c2k_spi_cs[4] = {0};
static struct c2k_spi_master c2k_spi_1_data = {
@@ -314,6 +316,28 @@
uint32_t tpm_init(void);
#endif
+static int is_factory_reset_pressed(void) {
+ return !comcerto_gpio_read(GPIO_6);
+}
+
+static int is_factory_reset_pressed_continuously(int period_ms) {
+ int i;
+
+ for (i = 0; i < period_ms / 10; i++) {
+ if (!is_factory_reset_pressed()) {
+ return 0;
+ }
+
+ mdelay(10);
+ }
+
+ return 1;
+}
+
+int is_recovery_mode() {
+ return recovery_mode;
+}
+
static int c2000_device_init(void)
{
#ifdef CONFIG_COMCERTO_BOOTLOADER
@@ -477,6 +501,14 @@
protect_file("/dev/env0", 1);
}
+ if (get_board_id() == SPACECAST_BOARD_ID) {
+ if (is_factory_reset_pressed()) {
+ printf("Factory reset button is pressed, checking for recovery mode ...\n");
+ recovery_mode = is_factory_reset_pressed_continuously(5000);
+ printf("Recovery mode is%s active\n", (recovery_mode? "" : " not"));
+ }
+ }
+
#ifdef CONFIG_TPM
if (tpm_init() != TPM_SUCCESS) {
printf("TPM initialization failed\n");
