This code allows reusing the default u-boot as in the late board init, the default envs are restored and proper recovery scripts executed.
Signed-off-by: Lukasz Majewski lukma@denx.de ---
arch/arm/cpu/armv7/vf610/Kconfig | 1 + arch/arm/include/asm/arch-vf610/imx-regs.h | 2 ++ board/phytec/pcm052/pcm052.c | 32 ++++++++++++++++++++++++++++++ 3 files changed, 35 insertions(+)
diff --git a/arch/arm/cpu/armv7/vf610/Kconfig b/arch/arm/cpu/armv7/vf610/Kconfig index 13905b5281..5d485a3ce2 100644 --- a/arch/arm/cpu/armv7/vf610/Kconfig +++ b/arch/arm/cpu/armv7/vf610/Kconfig @@ -23,6 +23,7 @@ config TARGET_BK4R1 bool "BK4r1" select SYS_FSL_ERRATUM_ESDHC135 select SYS_FSL_ERRATUM_ESDHC_A001 + select BOARD_LATE_INIT
endchoice
diff --git a/arch/arm/include/asm/arch-vf610/imx-regs.h b/arch/arm/include/asm/arch-vf610/imx-regs.h index 5d1f63c98b..ae0a187c4d 100644 --- a/arch/arm/include/asm/arch-vf610/imx-regs.h +++ b/arch/arm/include/asm/arch-vf610/imx-regs.h @@ -289,6 +289,8 @@ #define SRC_SRSR_WDOG_M4 (0x1 << 4) #define SRC_SRSR_WDOG_A5 (0x1 << 3) #define SRC_SRSR_POR_RST (0x1 << 0) +#define SRC_SBMR1_BOOTCFG1_SDMMC BIT(6) +#define SRC_SBMR1_BOOTCFG1_MMC BIT(4) #define SRC_SBMR2_BMOD_MASK (0x3 << 24) #define SRC_SBMR2_BMOD_SHIFT 24 #define SRC_SBMR2_BMOD_FUSES 0x0 diff --git a/board/phytec/pcm052/pcm052.c b/board/phytec/pcm052/pcm052.c index 4a18b0e0f4..d4f170a503 100644 --- a/board/phytec/pcm052/pcm052.c +++ b/board/phytec/pcm052/pcm052.c @@ -13,6 +13,7 @@ #include <asm/arch/ddrmc-vf610.h> #include <asm/arch/crm_regs.h> #include <asm/arch/clock.h> +#include <environment.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -307,6 +308,37 @@ int board_init(void) return 0; }
+#ifdef CONFIG_TARGET_BK4R1 +int board_late_init(void) +{ + struct src *psrc = (struct src *)SRC_BASE_ADDR; + u32 reg; + + /* + * BK4r1 handle emergency/service SD card boot + * Checking the SBMR1 register BOOTCFG1 byte: + * NAND: + * bit [2] - NAND data width - 16 + * bit [5] - NAND fast boot + * bit [7] = 1 - NAND as a source of booting + * SD card (0x64): + * bit [4] = 0 - SD card source + * bit [6] = 1 - SD/MMC source + */ + + reg = readl(&psrc->sbmr1); + if ((reg & SRC_SBMR1_BOOTCFG1_SDMMC) && + !(reg & SRC_SBMR1_BOOTCFG1_MMC)) { + printf("------ SD card boot -------\n"); + set_default_env("!LVFBootloader", 0); + env_set("bootcmd", + "run prepare_install_bk4r1_envs; run install_bk4r1rs"); + } + + return 0; +} +#endif /* CONFIG_TARGET_BK4R1 */ + int checkboard(void) { #ifdef CONFIG_TARGET_BK4R1