From 7e1d32208e035b3014e8dd83dbe41506327f5d40 Mon Sep 17 00:00:00 2001 From: Baruch Siach Date: Tue, 14 Aug 2018 18:05:46 +0300 Subject: arm64: mvebu: armada-8k: support environment in SD/eMMC Detect the SD/eMMC boot device at run-time. Load the environment from the boot deice, as well as save to it. Leave the environment offset the same as in the SPI flash. Make SD/eMMC 0 the default environment device when the boot device is not detected. Cc: Konstantin Porotchkin Signed-off-by: Baruch Siach Signed-off-by: Stefan Roese --- arch/arm/mach-mvebu/armada8k/cpu.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-mvebu/armada8k/cpu.c b/arch/arm/mach-mvebu/armada8k/cpu.c index f8e8e73610d..959a7cff764 100644 --- a/arch/arm/mach-mvebu/armada8k/cpu.c +++ b/arch/arm/mach-mvebu/armada8k/cpu.c @@ -18,6 +18,10 @@ #define RFU_GLOBAL_SW_RST (MVEBU_RFU_BASE + 0x84) #define RFU_SW_RESET_OFFSET 0 +#define SAR0_REG (MVEBU_REGISTER(0x2400200)) +#define BOOT_MODE_MASK 0x3f +#define BOOT_MODE_OFFSET 4 + /* * The following table includes all memory regions for Armada 7k and * 8k SoCs. The Armada 7k is missing the CP110 slave regions here. Lets @@ -125,3 +129,23 @@ u32 mvebu_get_nand_clock(void) else return 250 * 1000000; } + +int mmc_get_env_dev(void) +{ + u32 reg; + unsigned int boot_mode; + + reg = readl(SAR0_REG); + boot_mode = (reg >> BOOT_MODE_OFFSET) & BOOT_MODE_MASK; + + switch (boot_mode) { + case 0x28: + case 0x2a: + return 0; + case 0x29: + case 0x2b: + return 1; + } + + return CONFIG_SYS_MMC_ENV_DEV; +} -- cgit v1.3.1