diff options
author | Peng Fan <peng.fan@nxp.com> | 2016-01-28 11:51:26 +0300 |
---|---|---|
committer | Stefano Babic <sbabic@denx.de> | 2016-02-04 12:13:49 +0300 |
commit | 216d286c7e3d3d83d4d8ccaf0415192e1b1040c0 (patch) | |
tree | c04d68d7fa5727bbff584dc9c396a0633eac23db | |
parent | 62d8cce9f37c12ff92a47414484997a74d038440 (diff) | |
download | u-boot-216d286c7e3d3d83d4d8ccaf0415192e1b1040c0.tar.xz |
imx: mx6: implement mmc_get_env_dev
Implement mmc_get_env_dev, devno can be got from smbr1 of SRC.
Introduce a weak function board_mmc_get_env_dev, different
boards can implement it according to different sdhc controllers
that used by the board.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
-rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index ebe42b8e67..8aeeaecfd2 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -349,6 +349,38 @@ int arch_cpu_init(void) return 0; } +#ifdef CONFIG_ENV_IS_IN_MMC +__weak int board_mmc_get_env_dev(int devno) +{ + return CONFIG_SYS_MMC_ENV_DEV; +} + +int mmc_get_env_dev(void) +{ + struct src *src_regs = (struct src *)SRC_BASE_ADDR; + u32 soc_sbmr = readl(&src_regs->sbmr1); + u32 bootsel; + int devno; + + /* + * Refer to + * "i.MX 6Dual/6Quad Applications Processor Reference Manual" + * Chapter "8.5.3.1 Expansion Device eFUSE Configuration" + * i.MX6SL/SX/UL has same layout. + */ + bootsel = (soc_sbmr & 0x000000FF) >> 6; + + /* If not boot from sd/mmc, use default value */ + if (bootsel != 1) + return CONFIG_SYS_MMC_ENV_DEV; + + /* BOOT_CFG2[3] and BOOT_CFG2[4] */ + devno = (soc_sbmr & 0x00001800) >> 11; + + return board_mmc_get_env_dev(devno); +} +#endif + int board_postclk_init(void) { set_ldo_voltage(LDO_SOC, 1175); /* Set VDDSOC to 1.175V */ |