From 378ec0f8161d12df63016b7ad1e9415b4221b7dc Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Wed, 5 Feb 2014 10:24:24 -0500 Subject: [PATCH] omap5_uevm: 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. Signed-off-by: Tom Rini Signed-off-by: Pantelis Antoniou --- board/ti/omap5_uevm/README | 25 +++++++++++++++++++++++++ include/configs/omap5_uevm.h | 1 + 2 files changed, 26 insertions(+) create mode 100644 board/ti/omap5_uevm/README diff --git a/board/ti/omap5_uevm/README b/board/ti/omap5_uevm/README new file mode 100644 index 0000000000..970e2eceb7 --- /dev/null +++ b/board/ti/omap5_uevm/README @@ -0,0 +1,25 @@ +Summary +======= + +This document covers various features of the 'omap5_uevm' 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} omap5uevm/MLO +U-Boot # mmc write ${loadaddr} 0 100 +U-Boot # tftp ${loadaddr} omap5uevm/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 diff --git a/include/configs/omap5_uevm.h b/include/configs/omap5_uevm.h index 76c5106b45..3df502eda0 100644 --- a/include/configs/omap5_uevm.h +++ b/include/configs/omap5_uevm.h @@ -37,6 +37,7 @@ #define CONFIG_PARTITION_UUIDS #define CONFIG_CMD_PART #define CONFIG_HSMMC2_8BIT +#define CONFIG_SUPPORT_EMMC_BOOT /* Required support for the TCA642X GPIO we have on the uEVM */ #define CONFIG_TCA642X -- 2.30.2