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--- a/board/mediatek/mt7623/Kconfig
+++ b/board/mediatek/mt7623/Kconfig
@@ -10,4 +10,8 @@ config MTK_BROM_HEADER_INFO
string
default "lk=1"
+config RESET_BUTTON_LABEL
+ string "Button to trigger factory reset"
+ default "reset"
+
endif
--- a/board/mediatek/mt7623/mt7623_rfb.c
+++ b/board/mediatek/mt7623/mt7623_rfb.c
@@ -4,8 +4,17 @@
*/
#include <common.h>
+#include <dm.h>
+#include <button.h>
+#include <env.h>
+#include <init.h>
#include <mmc.h>
#include <asm/global_data.h>
+#include <linux/delay.h>
+
+#ifndef CONFIG_RESET_BUTTON_LABEL
+#define CONFIG_RESET_BUTTON_LABEL "reset"
+#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -41,3 +50,22 @@ int mmc_get_env_dev(void)
return mmc_get_boot_dev();
}
#endif
+
+int board_late_init(void)
+{
+ struct udevice *dev;
+
+ if (!button_get_by_label(CONFIG_RESET_BUTTON_LABEL, &dev)) {
+ puts("reset button found\n");
+#ifdef CONFIG_RESET_BUTTON_SETTLE_DELAY
+ mdelay(CONFIG_RESET_BUTTON_SETTLE_DELAY);
+#endif
+ if (button_get_state(dev) == BUTTON_ON) {
+ puts("button pushed, resetting environment\n");
+ gd->env_valid = ENV_INVALID;
+ }
+ }
+
+ env_relocate();
+ return 0;
+}
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