diff options
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/spl.h | 9 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/board.c | 64 |
2 files changed, 46 insertions, 27 deletions
diff --git a/arch/arm/include/asm/arch-sunxi/spl.h b/arch/arm/include/asm/arch-sunxi/spl.h index 58cdf806d9a..b543d24e5a0 100644 --- a/arch/arm/include/asm/arch-sunxi/spl.h +++ b/arch/arm/include/asm/arch-sunxi/spl.h @@ -19,6 +19,15 @@ #define SUNXI_BOOTED_FROM_MMC0_HIGH 0x10 #define SUNXI_BOOTED_FROM_MMC2_HIGH 0x12 +/* + * Values taken from the F1C200s BootROM stack + * to determine where we booted from. + */ +#define SUNIV_BOOTED_FROM_MMC0 0xffff40f8 +#define SUNIV_BOOTED_FROM_NAND 0xffff4114 +#define SUNIV_BOOTED_FROM_SPI 0xffff4130 +#define SUNIV_BOOTED_FROM_MMC1 0xffff4150 + #define is_boot0_magic(addr) (memcmp((void *)(addr), BOOT0_MAGIC, 8) == 0) uint32_t sunxi_get_boot_device(void); diff --git a/arch/arm/mach-sunxi/board.c b/arch/arm/mach-sunxi/board.c index 57078f7a7b2..0071de19ffd 100644 --- a/arch/arm/mach-sunxi/board.c +++ b/arch/arm/mach-sunxi/board.c @@ -191,12 +191,48 @@ SPL_LOAD_IMAGE_METHOD("FEL", 0, BOOT_DEVICE_BOARD, spl_board_load_image); #define SUNXI_INVALID_BOOT_SOURCE -1 +static int suniv_get_boot_source(void) +{ + /* Get the last function call from BootROM's stack. */ + u32 brom_call = *(u32 *)(uintptr_t)(fel_stash.sp - 4); + + /* translate SUNIV BootROM stack to standard SUNXI boot sources */ + switch (brom_call) { + case SUNIV_BOOTED_FROM_MMC0: + return SUNXI_BOOTED_FROM_MMC0; + case SUNIV_BOOTED_FROM_SPI: + return SUNXI_BOOTED_FROM_SPI; + case SUNIV_BOOTED_FROM_MMC1: + return SUNXI_BOOTED_FROM_MMC2; + /* SPI NAND is not supported yet. */ + case SUNIV_BOOTED_FROM_NAND: + return SUNXI_INVALID_BOOT_SOURCE; + } + /* If we get here something went wrong try to boot from FEL.*/ + printf("Unknown boot source from BROM: 0x%x\n", brom_call); + return SUNXI_INVALID_BOOT_SOURCE; +} + static int sunxi_get_boot_source(void) { + /* + * On the ARMv5 SoCs, the SPL header in SRAM is overwritten by the + * exception vectors in U-Boot proper, so we won't find any + * information there. Also the FEL stash is only valid in the SPL, + * so we can't use that either. So if this is called from U-Boot + * proper, just return MMC0 as a placeholder, for now. + */ + if (IS_ENABLED(CONFIG_MACH_SUNIV) && + !IS_ENABLED(CONFIG_SPL_BUILD)) + return SUNXI_BOOTED_FROM_MMC0; + if (!is_boot0_magic(SPL_ADDR + 4)) /* eGON.BT0 */ return SUNXI_INVALID_BOOT_SOURCE; - return readb(SPL_ADDR + 0x28); + if (IS_ENABLED(CONFIG_MACH_SUNIV)) + return suniv_get_boot_source(); + else + return readb(SPL_ADDR + 0x28); } /* The sunxi internal brom will try to loader external bootloader @@ -276,36 +312,10 @@ unsigned long spl_mmc_get_uboot_raw_sector(struct mmc *mmc, return sector; } -#ifdef CONFIG_MACH_SUNIV -/* - * The suniv BROM does not pass the boot media type to SPL, so we try with the - * boot sequence in BROM: mmc0->spinor->fail. - * TODO: This has the slight chance of being wrong (invalid SPL signature, - * but valid U-Boot legacy image on the SD card), but this should be rare. - * It looks like we can deduce from some BROM state upon entering the SPL - * (registers, SP, or stack itself) where the BROM was coming from and use - * that here. - */ -void board_boot_order(u32 *spl_boot_list) -{ - /* - * See the comments above in sunxi_get_boot_device() for information - * about FEL boot. - */ - if (!is_boot0_magic(SPL_ADDR + 4)) { - spl_boot_list[0] = BOOT_DEVICE_BOARD; - return; - } - - spl_boot_list[0] = BOOT_DEVICE_MMC1; - spl_boot_list[1] = BOOT_DEVICE_SPI; -} -#else u32 spl_boot_device(void) { return sunxi_get_boot_device(); } -#endif __weak void sunxi_sram_init(void) { |