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am335x_evm: Add support for eMMC environment

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Some boards, such as the BeagleBone Black, have an eMMC chip intstead
of NAND. We can use the eMMC boot partition to store the environment,
since it isn't used for anything else. This allows us to have a
configurable environment on those boards.

Signed-off-by: Justin Waters <justin.waters@timesys.com>
This commit is contained in:
Justin Waters 2013-07-11 09:55:02 -04:00 • committed by Tom Rini
parent 341d2c0e13
commit 8c6ede1fd2
1 changed files with 6 additions and 1 deletions
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7
include/configs/am335x_evm.h
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@ -502,7 +502,12 @@
"512k(u-boot),128k(u-boot-env1)," \
"128k(u-boot-env2),3464k(kernel)," \
"-(rootfs)"
#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