[U-Boot] [PATCH] ARM: mx6: add MMC2 boot device detection support in SPL
Marcin Niestroj
m.niestroj at grinn-global.com
Fri Oct 21 13:53:54 CEST 2016
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 at grinn-global.com>
---
arch/arm/imx-common/spl.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/arm/imx-common/spl.c b/arch/arm/imx-common/spl.c
index bdcda7d..325ba26 100644
--- a/arch/arm/imx-common/spl.c
+++ b/arch/arm/imx-common/spl.c
@@ -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:
--
2.10.0
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