U-Boot H616 SPL at 256KB MMC offset booting support

u-boot_h616_high_boot.patch

commit 5e9a281c9f9b50f22fdba619ca3a0f8788224ef3
Author: Andre Przywara <andre.przywara@arm.com>
Date:   Thu Mar 28 16:18:12 2024 +0000

    UNTESTED! H616 high location boot support
    
    Signed-off-by: Andre Przywara <andre.przywara@arm.com>

diff --git a/arch/arm/mach-sunxi/board.c b/arch/arm/mach-sunxi/board.c
index 0140b07d32a..046e9fbfc67 100644
--- a/arch/arm/mach-sunxi/board.c
+++ b/arch/arm/mach-sunxi/board.c
@@ -333,7 +333,8 @@ uint32_t sunxi_get_spl_size(void)
  * The eGON SPL image can be located at 8KB or at 128KB into an SD card or
  * an eMMC device. The boot source has bit 4 set in the latter case.
  * By adding 120KB to the normal offset when booting from a "high" location
- * we can support both cases.
+ * we can support both cases. The H616 has the alternative location
+ * moved up to 256 KB instead of 128KB, so cater for that, too.
  * Also U-Boot proper is located at least 32KB after the SPL, but will
  * immediately follow the SPL if that is bigger than that.
  */
@@ -349,6 +350,8 @@ unsigned long board_spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
 	case SUNXI_BOOTED_FROM_MMC0_HIGH:
 	case SUNXI_BOOTED_FROM_MMC2_HIGH:
 		sector += (128 - 8) * 2;
+		if (IS_ENABLED(CONFIG_MACH_SUN50I_H616))
+			sector += 128 * 2;
 		break;
 	}