package/boot/uboot-mediatek/patches/300-mt7622-generic-reset-button-ignore-env.patch

   1 --- a/board/mediatek/mt7622/mt7622_rfb.c
   2 +++ b/board/mediatek/mt7622/mt7622_rfb.c
   3 @@ -6,9 +6,16 @@
   4
   5  #include <common.h>
   6  #include <config.h>
   7 +#include <dm.h>
   8 +#include <button.h>
   9  #include <env.h>
  10  #include <init.h>
  11  #include <asm/global_data.h>
  12 +#include <linux/delay.h>
  13 +
  14 +#ifndef CONFIG_RESET_BUTTON_LABEL
  15 +#define CONFIG_RESET_BUTTON_LABEL "reset"
  16 +#endif
  17
  18  DECLARE_GLOBAL_DATA_PTR;
  19
  20 @@ -20,7 +27,19 @@ int board_init(void)
  21
  22  int board_late_init(void)
  23  {
  24 -       gd->env_valid = 1; //to load environment variable from persistent store
  25 +       struct udevice *dev;
  26 +
  27 +       if (!button_get_by_label(CONFIG_RESET_BUTTON_LABEL, &dev)) {
  28 +               puts("reset button found\n");
  29 +#ifdef CONFIG_RESET_BUTTON_SETTLE_DELAY
  30 +               mdelay(CONFIG_RESET_BUTTON_SETTLE_DELAY);
  31 +#endif
  32 +               if (button_get_state(dev) == BUTTON_ON) {
  33 +                       puts("button pushed, resetting environment\n");
  34 +                       gd->env_valid = ENV_INVALID;
  35 +               }
  36 +       }
  37 +
  38         env_relocate();
  39         return 0;
  40  }
  41 --- a/arch/arm/mach-mediatek/Kconfig
  42 +++ b/arch/arm/mach-mediatek/Kconfig
  43 @@ -115,4 +115,8 @@ config MTK_BROM_HEADER_INFO
  44         default "media=emmc" if TARGET_MT8516 || TARGET_MT8365 || TARGET_MT8183
  45         default "lk=1" if TARGET_MT7623
  46
  47 +config RESET_BUTTON_LABEL
  48 +       string "Button to trigger factory reset"
  49 +       default "reset"
  50 +
  51  endif