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authorDaniel Golle <daniel@makrotopia.org>2022-07-17 21:42:05 +0100
committerDaniel Golle <daniel@makrotopia.org>2022-08-28 20:33:15 +0100
commit20eee0d6cb669abcaa9fba8710d47eba1e44c656 (patch)
tree0bbce21ab8fd7e158dcfd8466f4ddab019a4019a /package/boot
parent85581cc89a0a4db8df0675458ef54534fdd65e1f (diff)
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uboot-mediatek: mt7986: add generic reset button support
Allow resetting environment to default values when defined button exists in device tree. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'package/boot')
-rw-r--r--package/boot/uboot-mediatek/patches/303-mt7986-generic-reset-button-ignore-env.patch40
1 files changed, 40 insertions, 0 deletions
diff --git a/package/boot/uboot-mediatek/patches/303-mt7986-generic-reset-button-ignore-env.patch b/package/boot/uboot-mediatek/patches/303-mt7986-generic-reset-button-ignore-env.patch
new file mode 100644
index 0000000000..5011e74257
--- /dev/null
+++ b/package/boot/uboot-mediatek/patches/303-mt7986-generic-reset-button-ignore-env.patch
@@ -0,0 +1,40 @@
+--- a/board/mediatek/mt7986/mt7986_rfb.c
++++ b/board/mediatek/mt7986/mt7986_rfb.c
+@@ -6,9 +6,16 @@
+
+ #include <common.h>
+ #include <config.h>
++#include <dm.h>
++#include <button.h>
+ #include <env.h>
+ #include <init.h>
+ #include <asm/global_data.h>
++#include <linux/delay.h>
++
++#ifndef CONFIG_RESET_BUTTON_LABEL
++#define CONFIG_RESET_BUTTON_LABEL "reset"
++#endif
+
+ #include <mtd.h>
+ #include <linux/mtd/mtd.h>
+@@ -25,7 +32,19 @@ int board_init(void)
+
+ int board_late_init(void)
+ {
+- gd->env_valid = 1; //to load environment variable from persistent store
++ struct udevice *dev;
++
++ gd->env_valid = ENV_VALID;
++ 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;
+ }