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arm64: mvebu: armada-8k: support environment in SD/eMMC

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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 <kostap@marvell.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Baruch Siach 2018-08-14 18:05:46 +03:00 committed by Stefan Roese
parent 9ca6fae9d0
commit 7e1d32208e
2 changed files with 27 additions and 0 deletions
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24
arch/arm/mach-mvebu/armada8k/cpu.c
View File

@ -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;
}

3
include/configs/mvebu_armada-8k.h
View File

@ -64,6 +64,9 @@
#define CONFIG_ENV_SIZE (64 << 10) /* 64KiB */
#define CONFIG_ENV_SECT_SIZE (64 << 10) /* 64KiB sectors */
/* When runtime detection fails this is the default */
#define CONFIG_SYS_MMC_ENV_DEV 0
#define CONFIG_SYS_MAX_NAND_DEVICE 1
#define CONFIG_SYS_NAND_MAX_CHIPS 1
#define CONFIG_SYS_NAND_ONFI_DETECTION