Commit b818d9ab authored by Tom Rini's avatar Tom Rini Committed by Pantelis Antoniou

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: default avatarTom Rini <trini@ti.com>
Signed-off-by: default avatarPantelis Antoniou <panto@antoniou-consulting.com>
parent 378ec0f8
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
......@@ -73,6 +73,8 @@
#define CONFIG_SPL_SPI_CS 0
#define CONFIG_SYS_SPI_U_BOOT_OFFS 0x20000
#define CONFIG_SUPPORT_EMMC_BOOT
/* USB xHCI HOST */
#define CONFIG_CMD_USB
#define CONFIG_USB_HOST
......
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