[U-Boot] [PATCH 2/5] am335x_evm: Add am335x_boneblack variant

[Justin Waters]

The BeagleBone Black differs from the other AM335x boards in a few
significant ways, so it makes sense to create a custom configuration
for it. In particular, it uses eMMC instead of NAND flash.

We can use the eMMC boot partition to store the environment, since it
isn't used for anything else.

Signed-off-by: Justin Waters <justin.waters at timesys.com>
---
 boards.cfg                   |    1 +
 include/configs/am335x_evm.h |    7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/boards.cfg b/boards.cfg
index c0c4282..7dea9e8 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -249,6 +249,7 @@ am335x_evm_uart3             arm         armv7       am335x              ti
 am335x_evm_uart4             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL5,CONS_INDEX=5
 am335x_evm_uart5             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL6,CONS_INDEX=6
 am335x_evm_usbspl            arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL1,CONS_INDEX=1,SPL_USBETH_SUPPORT
+am335x_boneblack             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL1,CONS_INDEX=1,EMMC_BOOT,NO_NAND
 ti814x_evm                   arm         armv7       ti814x              ti             am33xx
 pcm051                       arm         armv7       pcm051              phytec         am33xx      pcm051
 sama5d3xek_mmc               arm         armv7       sama5d3xek          atmel          at91        sama5d3xek:SAMA5D3,SYS_USE_MMC
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 7bcfe2e..5947f5a 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -487,7 +487,12 @@
 # define CONFIG_ENV_SPI_MAX_HZ		CONFIG_SF_DEFAULT_SPEED
 # define CONFIG_ENV_OFFSET		(892 << 10) /* 892 KiB in */
 # define CONFIG_ENV_SECT_SIZE		(4 << 10) /* 4 KB sectors */
-#endif /* SPI support */
+#elif defined(CONFIG_EMMC_BOOT)
+# undef CONFIG_ENV_IS_NOWHERE
+# define CONFIG_ENV_IS_IN_MMC
+# define CONFIG_SYS_MMC_ENV_DEV		1
+# define CONFIG_SYS_MMC_ENV_PART	2
+#endif
 
 /* Unsupported features */
 #undef CONFIG_USE_IRQ
-- 
1.7.9.6