This patch adds runtime boot-device detection to SPL U-Boot.
Signed-off-by: Stefan Roese sr@denx.de Cc: Luka Perkov luka.perkov@sartura.hr Cc: Dirk Eibach dirk.eibach@gdsys.cc Cc: Phil Sutter phil@nwl.cc Cc: Kevin Smith kevin.smith@elecsyscorp.com --- arch/arm/mach-mvebu/include/mach/soc.h | 16 ++++++++++++++++ arch/arm/mach-mvebu/spl.c | 30 +++++++++++++++++++++++------- 2 files changed, 39 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-mvebu/include/mach/soc.h b/arch/arm/mach-mvebu/include/mach/soc.h index dbb96e0..0da313d 100644 --- a/arch/arm/mach-mvebu/include/mach/soc.h +++ b/arch/arm/mach-mvebu/include/mach/soc.h @@ -100,14 +100,24 @@ #if defined(CONFIG_ARMADA_38X) /* SAR values for Armada 38x */ #define CONFIG_SAR_REG (MVEBU_REGISTER(0x18600)) + #define SAR_CPU_FREQ_OFFS 10 #define SAR_CPU_FREQ_MASK (0x1f << SAR_CPU_FREQ_OFFS) #define SAR_BOOT_DEVICE_OFFS 4 #define SAR_BOOT_DEVICE_MASK (0x1f << SAR_BOOT_DEVICE_OFFS) + +#define BOOT_DEV_SEL_OFFS 4 +#define BOOT_DEV_SEL_MASK (0x1f << BOOT_DEV_SEL_OFFS) + +#define BOOT_FROM_UART 0x28 +#define BOOT_FROM_SPI 0x32 +#define BOOT_FROM_MMC 0x30 +#define BOOT_FROM_MMC_ALT 0x31 #else /* SAR values for Armada XP */ #define CONFIG_SAR_REG (MVEBU_REGISTER(0x18230)) #define CONFIG_SAR2_REG (MVEBU_REGISTER(0x18234)) + #define SAR_CPU_FREQ_OFFS 21 #define SAR_CPU_FREQ_MASK (0x7 << SAR_CPU_FREQ_OFFS) #define SAR_FFC_FREQ_OFFS 24 @@ -116,6 +126,12 @@ #define SAR2_CPU_FREQ_MASK (0x1 << SAR2_CPU_FREQ_OFFS) #define SAR_BOOT_DEVICE_OFFS 5 #define SAR_BOOT_DEVICE_MASK (0xf << SAR_BOOT_DEVICE_OFFS) + +#define BOOT_DEV_SEL_OFFS 5 +#define BOOT_DEV_SEL_MASK (0xf << BOOT_DEV_SEL_OFFS) + +#define BOOT_FROM_UART 0x2 +#define BOOT_FROM_SPI 0x3 #endif
#endif /* _MVEBU_SOC_H */ diff --git a/arch/arm/mach-mvebu/spl.c b/arch/arm/mach-mvebu/spl.c index 832df0a..778996e 100644 --- a/arch/arm/mach-mvebu/spl.c +++ b/arch/arm/mach-mvebu/spl.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2014-2015 Stefan Roese sr@denx.de + * Copyright (C) 2014-2016 Stefan Roese sr@denx.de * * SPDX-License-Identifier: GPL-2.0+ */ @@ -15,14 +15,30 @@
DECLARE_GLOBAL_DATA_PTR;
-u32 spl_boot_device(void) +static u32 get_boot_device(void) { -#if defined(CONFIG_SPL_SPI_FLASH_SUPPORT) - return BOOT_DEVICE_SPI; -#endif -#if defined(CONFIG_SPL_MMC_SUPPORT) - return BOOT_DEVICE_MMC1; + u32 val; + u32 boot_device; + + val = readl(CONFIG_SAR_REG); /* SAR - Sample At Reset */ + boot_device = (val & BOOT_DEV_SEL_MASK) >> BOOT_DEV_SEL_OFFS; + switch (boot_device) { +#ifdef CONFIG_SPL_MMC_SUPPORT + case BOOT_FROM_MMC: + case BOOT_FROM_MMC_ALT: + return BOOT_DEVICE_MMC1; #endif + case BOOT_FROM_UART: + return BOOT_DEVICE_UART; + case BOOT_FROM_SPI: + default: + return BOOT_DEVICE_SPI; + }; +} + +u32 spl_boot_device(void) +{ + return get_boot_device(); }
#ifdef CONFIG_SPL_MMC_SUPPORT