reboot-mode: read the boot mode from RTC memory
RTC devices could provide battery-backed memory that can be used for
storing the reboot mode magic value.
Add a new reboot-mode back-end that uses RTC to store the reboot-mode
magic value. The driver also supports both endianness modes.
Signed-off-by: Nandor Han <nandor.han@vaisala.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 2347f4c..d597631 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -67,6 +67,16 @@
mode-download = <0x03>;
};
+ reboot_mode1: reboot-mode@14 {
+ compatible = "reboot-mode-rtc";
+ rtc = <&rtc_0>;
+ reg = <0x30 4>;
+ u-boot,env-variable = "bootstatus";
+ big-endian;
+ mode-test = <0x21969147>;
+ mode-download = <0x51939147>;
+ };
+
audio: audio-codec {
compatible = "sandbox,audio-codec";
#sound-dai-cells = <1>;