u-boot-brain

brain-hackers_pepepper-mirror/u-boot-brain

mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-06-09 23:36:03 +09:00

History

Simon Glass bfebc8c965 env: Rename getenv_hex(), getenv_yesno(), getenv_ulong() We are now using an env_ prefix for environment functions. Rename these for consistency. Also add function comments in common.h. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>		2017-08-16 08:30:32 -04:00
..
evm.c	env: Rename getenv_hex(), getenv_yesno(), getenv_ulong()	2017-08-16 08:30:32 -04:00
Kconfig	ARM: DRA7: Enable EEPROM support	2016-03-14 19:18:50 -04:00
MAINTAINERS	ARM: DRA7xx: Enable FIT for hs platforms	2016-06-06 13:39:17 -04:00
Makefile	board: ti: convert makefiles to Kbuild style	2013-10-31 13:26:44 -04:00
mux_data.h	board: ti: dra72: Introduce optimization for rgmii timing for rev C	2016-12-04 13:54:50 -05:00
README	mmc: Add 'mmc rst-function' sub-command	2014-04-02 13:02:58 +03:00

README

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