[U-Boot] [PATCH 2/2] board: tbs2910: Autoselect environment device when booting from SD

[Soeren Moch <smoch@web.de>]

Implement board specific functions to select the environment device and
partition when booting from SD/MMC.

SD2:  mmc 0 0
SD3:  mmc 1 0
eMMC: mmc 2 1

Signed-off-by: Soeren Moch <smoch@web.de>
---
Cc: Stefano Babic <sbabic@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: u-boot at lists.denx.de
---
 board/tbs/tbs2910/tbs2910.c | 11 +++++++++++
 include/configs/tbs2910.h   |  4 ++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/board/tbs/tbs2910/tbs2910.c b/board/tbs/tbs2910/tbs2910.c
index 0b509b6..d302fc2 100644
--- a/board/tbs/tbs2910/tbs2910.c
+++ b/board/tbs/tbs2910/tbs2910.c
@@ -257,6 +257,17 @@ int board_mmc_init(bd_t *bis)
 	}
 	return 0;
 }
+
+/* set environment device to boot device when booting from SD */
+int board_mmc_get_env_dev(int devno)
+{
+	return devno - 1;
+}
+
+int board_mmc_get_env_part(int devno)
+{
+	return (devno == 3) ? 1 : 0; /* part 0 for SD2 / SD3, part 1 for eMMC */
+}
 #endif /* CONFIG_FSL_ESDHC */
 
 #ifdef CONFIG_VIDEO_IPUV3
diff --git a/include/configs/tbs2910.h b/include/configs/tbs2910.h
index 17b0213..0f23034 100644
--- a/include/configs/tbs2910.h
+++ b/include/configs/tbs2910.h
@@ -176,8 +176,8 @@
 
 /* Environment organization */
 #define CONFIG_ENV_IS_IN_MMC
-#define CONFIG_SYS_MMC_ENV_DEV		2
-#define CONFIG_SYS_MMC_ENV_PART		1
+#define CONFIG_SYS_MMC_ENV_DEV		2 /* overwritten on SD boot */
+#define CONFIG_SYS_MMC_ENV_PART		1 /* overwritten on SD boot */
 #define CONFIG_ENV_SIZE			(8 * 1024)
 #define CONFIG_ENV_OFFSET		(384 * 1024)
 #define CONFIG_ENV_OVERWRITE
-- 
1.9.1