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ARM: mx6: add MMC2 boot device detection support in SPL 

Check BOOT_CFG2[3:4] to determine which SD/MMC port is selected to boot
from. If MMC2 is selected return BOOT_DEVICE_MMC2. In all other cases
return BOOT_DEVICE_MMC1, as we do not have corresponding macro for MMC3
and MMC4.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
This commit is contained in:
Marcin Niestroj 2016-10-21 13:53:54 +02:00 committed by Stefano Babic
parent 2d221489df
commit 54e4fcfa3c
1 changed files with 5 additions and 1 deletions
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6
arch/arm/imx-common/spl.c
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@ -14,6 +14,9 @@
#include <spl.h>
#if defined(CONFIG_MX6)
#define MX6_MMC_PORT_MASK GENMASK(12, 11)
#define MX6_MMC_PORT_2 BIT(11)
/* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */
u32 spl_boot_device(void)
{
@ -55,10 +58,11 @@ u32 spl_boot_device(void)
/* SD/eSD: 8.5.3, Table 8-15 */
case 0x4:
case 0x5:
return BOOT_DEVICE_MMC1;
/* MMC/eMMC: 8.5.3 */
case 0x6:
case 0x7:
if ((reg & MX6_MMC_PORT_MASK) == MX6_MMC_PORT_2)
return BOOT_DEVICE_MMC2;
return BOOT_DEVICE_MMC1;
/* NAND Flash: 8.5.2 */
case 0x8 ... 0xf: