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authorTom Rini <trini@ti.com>2014-02-05 10:24:25 -0500
committerPantelis Antoniou <panto@antoniou-consulting.com>2014-02-07 18:17:49 +0200
commitb818d9ab8d96471c40ccbd4541a46dfa415eda73 (patch)
treeac78abda013de1f47cf1481c1bb22c05561452a3 /board/ti/dra7xx
parent378ec0f8161d12df63016b7ad1e9415b4221b7dc (diff)
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dra7xx_evm: Add CONFIG_SUPPORT_EMMC_BOOT, document usage
Add a README to the board which lists the commands required to enable booting from the eMMC boot partitions found on the board. Cc: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Tom Rini <trini@ti.com> Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
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+Summary
+=======
+
+This document covers various features of the 'dra7xx_evm' build and some
+related uses.
+
+eMMC boot partition use
+=======================
+
+It is possible, depending on SYSBOOT configuration to boot from the eMMC
+boot partitions using (name depending on documentation referenced)
+Alternative Boot operation mode or Boot Sequence Option 1/2. In this
+example we load MLO and u-boot.img from the build into DDR and then use
+'mmc bootbus' to set the required rate (see TRM) and 'mmc partconfig' to
+set boot0 as the boot device.
+U-Boot # setenv autoload no
+U-Boot # usb start
+U-Boot # dhcp
+U-Boot # mmc dev 1 1
+U-Boot # tftp ${loadaddr} dra7xx/MLO
+U-Boot # mmc write ${loadaddr} 0 100
+U-Boot # tftp ${loadaddr} dra7xx/u-boot.img
+U-Boot # mmc write ${loadaddr} 300 400
+U-Boot # mmc bootbus 1 2 0 2
+U-Boot # mmc partconf 1 1 1 0