diff options
| author | Faiz Abbas | 2019-06-04 17:55:55 -0500 |
|---|---|---|
| committer | Tom Rini | 2019-07-17 11:12:54 -0400 |
| commit | b5d2e2980b4a4411c9162790eb29746fb5b53d83 (patch) | |
| tree | 18233e2c22a17911265fb14ae8c95c74e35ea3b7 | |
| parent | 1bc54fc0af7db057abaee44720a173261851b70f (diff) | |
am65x: README: Add eMMC layout and flash instructions
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>
| -rw-r--r-- | board/ti/am65x/README | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/board/ti/am65x/README b/board/ti/am65x/README index 0b82bd557b5..16384e05ea2 100644 --- a/board/ti/am65x/README +++ b/board/ti/am65x/README @@ -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 |