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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>
25 lines
837 B
Text
25 lines
837 B
Text
Summary
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=======
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This document covers various features of the 'dra7xx_evm' build and some
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related uses.
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eMMC boot partition use
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=======================
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It is possible, depending on SYSBOOT configuration to boot from the eMMC
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boot partitions using (name depending on documentation referenced)
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Alternative Boot operation mode or Boot Sequence Option 1/2. In this
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example we load MLO and u-boot.img from the build into DDR and then use
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'mmc bootbus' to set the required rate (see TRM) and 'mmc partconfig' to
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set boot0 as the boot device.
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U-Boot # setenv autoload no
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U-Boot # usb start
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U-Boot # dhcp
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U-Boot # mmc dev 1 1
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U-Boot # tftp ${loadaddr} dra7xx/MLO
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U-Boot # mmc write ${loadaddr} 0 100
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U-Boot # tftp ${loadaddr} dra7xx/u-boot.img
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U-Boot # mmc write ${loadaddr} 300 400
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U-Boot # mmc bootbus 1 2 0 2
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U-Boot # mmc partconf 1 1 1 0
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