diff options
| author | Pali Rohár <pali@kernel.org> | 2023-01-21 22:58:28 +0100 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2023-03-01 06:39:17 +0100 |
| commit | fc10a926ec43250914de6fd69e4258f39c79c8aa (patch) | |
| tree | ec5f5ab7ebb4abc6a1163bf612af3791b071873a /doc | |
| parent | 5b039dced38162f21fa078e65b0f5fc733439fac (diff) | |
| download | u-boot-fc10a926ec43250914de6fd69e4258f39c79c8aa.zip u-boot-fc10a926ec43250914de6fd69e4258f39c79c8aa.tar.gz u-boot-fc10a926ec43250914de6fd69e4258f39c79c8aa.tar.bz2 | |
cmd: mvebu/bubt: Add support for selecting eMMC HW partition
Support for burning into the correct eMMC HW boot partition was broken and
removed in commit 96be2f072768 ("mvebu: bubt: Drop dead code"). Reimplement
this functionality and bring it back again.
Fixes: 96be2f072768 ("mvebu: bubt: Drop dead code")
Signed-off-by: Pali Rohár <pali@kernel.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/mvebu/cmd/bubt.txt | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/doc/mvebu/cmd/bubt.txt b/doc/mvebu/cmd/bubt.txt index 6051243..1fe1f07 100644 --- a/doc/mvebu/cmd/bubt.txt +++ b/doc/mvebu/cmd/bubt.txt @@ -14,8 +14,7 @@ Examples: Notes: - For the TFTP interface set serverip and ipaddr. -- To burn image to SD/eMMC device, the target is defined - by parameters CONFIG_SYS_MMC_ENV_DEV and CONFIG_SYS_MMC_ENV_PART. +- To burn image to SD/eMMC device, the target is defined by HW partition. Bubt command details (burn image step by-step) ---------------------------------------------- @@ -40,10 +39,20 @@ Notes: Number 0 is used for user data partition and should not be utilized for storing boot images and U-Boot environment in RAW mode since it will break file system structures usually located here. - The default boot partition is BOOT0. It is selected by the following parameter: - CONFIG_SYS_MMC_ENV_PART=1 - Valid values for this parameter are 1 for BOOT0 and 2 for BOOT1. - Please never use partition number 0 here! + + Currently configured boot partition can be printed by command: + # mmc partconf 0 + (search for BOOT_PARTITION_ACCESS output, number 7 is user data) + + Change it to BOOT0: + # mmc partconf 0 0 1 1 + + Change it to BOOT1: + # mmc partconf 0 0 2 2 + + Change it to user data: + # mmc partconf 0 0 7 0 + - The partition number is ignored if the target device is SD card. - The boot image offset starts at block 0 for eMMC and block 1 for SD devices. The block 0 on SD devices is left for MBR storage. |