leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

am65x: README: Add eMMC layout and flash instructions

Browse Source 
Add instructions for flashing boot images to the eMMC with a
layout of the address where each image needs to be flashed.

Also add instructions to flash filesystem partition in user
partition and boot kernel from the rootfs.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
This commit is contained in:
Faiz Abbas 2019-06-04 17:55:55 -05:00 committed by Tom Rini
parent 1bc54fc0af
commit b5d2e2980b
1 changed files with 52 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
board/ti/am65x/README
View File

@ -209,3 +209,55 @@ Image formats:
| | Secure config | |
| +-------------------+ |
+-----------------------+
eMMC:
-----
ROM supports booting from eMMC from boot0 partition offset 0x0
Flashing images to eMMC:
The following commands can be used to download tiboot3.bin, tispl.bin,
u-boot.img, and sysfw.itb from an SD card and write them to the eMMC boot0
partition at respective addresses.
=> mmc dev 0 1
=> fatload mmc 1 ${loadaddr} tiboot3.bin
=> mmc write ${loadaddr} 0x0 0x400
=> fatload mmc 1 ${loadaddr} tispl.bin
=> mmc write ${loadaddr} 0x400 0x1000
=> fatload mmc 1 ${loadaddr} u-boot.img
=> mmc write ${loadaddr} 0x1400 0x2000
=> fatload mmc 1 ${loadaddr} sysfw.itb
=> mmc write ${loadaddr} 0x3600 0x800
To give the ROM access to the boot partition, the following commands must be
used for the first time:
=> mmc partconf 0 1 1 1
=> mmc bootbus 0 1 0 0
To create a software partition for the rootfs, the following command can be
used:
=> gpt write mmc 0 ${partitions}
eMMC layout:
boot0 partition (8 MB) user partition
0x0+----------------------------------+ 0x0+-------------------------+
| tiboot3.bin (512 KB) | | |
0x400+----------------------------------+ | |
| tispl.bin (2 MB) | | |
0x1400+----------------------------------+ | rootfs |
| u-boot.img (4 MB) | | |
0x3400+----------------------------------+ | |
| environment (128 KB) | | |
0x3500+----------------------------------+ | |
| backup environment (128 KB) | | |
0x3600+----------------------------------+ | |
| sysfw (1 MB) | | |
0x3E00+----------------------------------+ +-------------------------+
Kernel image and DT are expected to be present in the /boot folder of rootfs.
To boot kernel from eMMC, use the following commands:
=> setenv mmcdev 0
=> setenv bootpart 0
=> boot