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| author | Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org> | 2020-11-04 00:06:26 +0100 |
|---|---|---|
| committer | Joonas Kylmälä <joonas.kylmala@iki.fi> | 2020-11-17 09:29:49 -0500 |
| commit | af3d9cb8bbc764c1ee5e9ca00b29f0908a4edd87 (patch) | |
| tree | b0c86db9d8148890debddce4e833bb6a8a3f9470 | |
| parent | d6c99f43863fb434ae05e391961aefba8578d85d (diff) | |
| download | kernel_replicant_linux-af3d9cb8bbc764c1ee5e9ca00b29f0908a4edd87.tar.gz kernel_replicant_linux-af3d9cb8bbc764c1ee5e9ca00b29f0908a4edd87.tar.bz2 kernel_replicant_linux-af3d9cb8bbc764c1ee5e9ca00b29f0908a4edd87.zip | |
[WIP] ARM: dts: exynos: Add reboot modes to midas
The values have been taken from the sec-reboot.c driver in
the 3.0.101 smdk4412 kernel used in LineageOS which is based
on Samsung source code releases for various devices.
Only the strict minimum modes have been added: the S-Boot 4.0
bootloader is nonfree, so exporting less well known modes could
potentially have unwanted consequences.
TODO:
- After reboot to download, heimdall doesn't work while it works
with the SMDK4412 kernel.
- Fix reboot without arguments (Test: Try "Reboot system now"
in a recovery after rebooting to the recovery)
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
| -rw-r--r-- | arch/arm/boot/dts/exynos4412-midas.dtsi | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/exynos4412-midas.dtsi b/arch/arm/boot/dts/exynos4412-midas.dtsi index 7e7c243ff196..7a95e7365fcb 100644 --- a/arch/arm/boot/dts/exynos4412-midas.dtsi +++ b/arch/arm/boot/dts/exynos4412-midas.dtsi @@ -983,6 +983,29 @@ &pmu_system_controller { assigned-clocks = <&pmu_system_controller 0>; assigned-clock-parents = <&clock CLK_XUSBXTI>; + + /* S-Boot 4.0 */ + #define S5P_INFORM2 0xF008 + #define S5P_INFORM3 0x080C + #define BOOT_MODE_PREFIX 0x12345670 + #define BOOT_NORMAL (BOOT_MODE_PREFIX | 0) + #define BOOT_DOWNLOAD (BOOT_MODE_PREFIX | 1) + #define BOOT_RECOVERY (BOOT_MODE_PREFIX | 4) + + no-lpm-mode { + compatible = "syscon-reboot"; + offset = <S5P_INFORM2>; + value = <0x12345678>; + }; + + reboot-mode { + compatible = "syscon-reboot-mode"; + offset = <S5P_INFORM3>; + mode-normal = <BOOT_NORMAL>; + mode-recovery = <BOOT_RECOVERY>; + mode-bootloader = <BOOT_DOWNLOAD>; + mode-download = <BOOT_DOWNLOAD>; + }; }; &pinctrl_0 { |