u-boot/board/ti/dra7xx
Tom Rini 79b079f35c dra7xx_evm: Add QSPI_4 support, qspiboot build target
We previously only supported QSPI_1 (single) support.  Add QSPI_4 (quad)
read support as well.  This means we can be given one of two boot device
values, but don't care which it is, so perform a fixup on the QSPI_4
value.  We add a qspiboot build target to better show how you would use
QSPI as a boot device in deployment.  When we boot from QSPI, we can
check the environment for 'boot_os' to control Falcon Mode.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
2014-04-17 17:24:37 -04:00
..
evm.c dra7xx_evm: Add QSPI_4 support, qspiboot build target 2014-04-17 17:24:37 -04:00
Makefile board: ti: convert makefiles to Kbuild style 2013-10-31 13:26:44 -04:00
mux_data.h usb: dra7xx: Add support for dra7xx xhci USB host 2013-10-20 23:42:41 +02:00
README mmc: Add 'mmc rst-function' sub-command 2014-04-02 13:02:58 +03:00

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
U-Boot # mmc rst-function 1 1