From 067e0b9684d4f195d92e0b1de260d69dc1e0f2c5 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Sun, 16 Dec 2018 02:04:58 +0000 Subject: sunxi: Allow booting from 128KB SD/eMMC offset On modern Allwinner SoCs (tested: H2+, A64, H5, H6) the BootROM can actually load the SPL also from sector 256 (128KB) of an SD card or eMMC chip. For more details, see [1]. In this case the boot source indicator (written at offset 0x28 of SRAM A1) has bit 4 set, so it's 0x10 for SD card and 0x12 for eMMC. Add those new values to the existing boot source check to allow booting the SPL from those "high" disk offsets as well. For this to work, the value of CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR needs to be adjusted, for instance to 0x140 (right after the high SPL). Doing this dynamically sounds desirable, but looks nasty to implement. [1] https://groups.google.com/forum/#!topic/linux-sunxi/MaiijyaAFjk Signed-off-by: Andre Przywara Acked-by: Maxime Ripard --- arch/arm/include/asm/arch-sunxi/spl.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/arm/include') diff --git a/arch/arm/include/asm/arch-sunxi/spl.h b/arch/arm/include/asm/arch-sunxi/spl.h index 4baba38b004..8c916e8c752 100644 --- a/arch/arm/include/asm/arch-sunxi/spl.h +++ b/arch/arm/include/asm/arch-sunxi/spl.h @@ -28,6 +28,8 @@ #define SUNXI_BOOTED_FROM_NAND 1 #define SUNXI_BOOTED_FROM_MMC2 2 #define SUNXI_BOOTED_FROM_SPI 3 +#define SUNXI_BOOTED_FROM_MMC0_HIGH 0x10 +#define SUNXI_BOOTED_FROM_MMC2_HIGH 0x12 /* boot head definition from sun4i boot code */ struct boot_file_head { -- cgit v1.3.1