mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-28 22:13:08 +00:00
1e46d0bc6e
After the conversion to DM the U-Boot binary is called u-boot-dtb.imx, so fix the README file accordingly. Signed-off-by: Fabio Estevam <festevam@gmail.com> Acked-by: Peng Fan <peng.fan@nxp.com>
82 lines
1.9 KiB
Text
82 lines
1.9 KiB
Text
How to use and build U-Boot on mx6sabreauto
|
|
-------------------------------------------
|
|
|
|
mx6sabreauto_defconfig target supports mx6q/mx6dl/mx6qp sabreauto variants.
|
|
|
|
In order to build it:
|
|
|
|
$ make mx6sabreauto_defconfig
|
|
|
|
$ make
|
|
|
|
This will generate the SPL and u-boot-dtb.img binaries.
|
|
|
|
- Flash the SPL binary into the SD card:
|
|
|
|
$ sudo dd if=SPL of=/dev/sdX bs=1K seek=1 && sync
|
|
|
|
- Flash the u-boot-dtb.img binary into the SD card:
|
|
|
|
$ sudo dd if=u-boot-dtb.img of=/dev/sdX bs=1K seek=69 && sync
|
|
|
|
Booting via Falcon mode
|
|
-----------------------
|
|
|
|
Write in mx6sabreauto_defconfig the following define below:
|
|
|
|
CONFIG_SPL_OS_BOOT=y
|
|
|
|
In order to build it:
|
|
|
|
$ make mx6sabreauto_defconfig
|
|
|
|
$ make
|
|
|
|
This will generate the SPL image called SPL and the u-boot-dtb.img.
|
|
|
|
- Flash the SPL image into the SD card:
|
|
|
|
$ sudo dd if=SPL of=/dev/sdb bs=1K seek=1 && sync
|
|
|
|
- Flash the u-boot-dtb.img image into the SD card:
|
|
|
|
$ sudo dd if=u-boot-dtb.img of=/dev/sdb bs=1K seek=69 && sync
|
|
|
|
Create a FAT16 boot partition to store uImage and the dtb file, then copy the files there:
|
|
|
|
$ sudo cp uImage /media/boot
|
|
|
|
$ sudo cp imx6dl-sabreauto.dtb /media/boot
|
|
|
|
Create a partition for root file system and extract it there:
|
|
|
|
$ sudo tar xvf rootfs.tar.gz -C /media/root
|
|
|
|
The SD card must have enough space for raw "args" and "kernel".
|
|
To configure Falcon mode for the first time, on U-Boot do the following commands:
|
|
|
|
- Load dtb file from boot partition:
|
|
|
|
# load mmc 0:1 ${fdt_addr} imx6dl-sabreauto.dtb
|
|
|
|
- Load kernel image from boot partition:
|
|
|
|
# load mmc 0:1 ${loadaddr} uImage
|
|
|
|
- Write kernel at 2MB offset:
|
|
|
|
# mmc write ${loadaddr} 0x1000 0x4000
|
|
|
|
- Setup kernel bootargs:
|
|
|
|
# setenv bootargs "console=ttymxc3,115200 root=/dev/mmcblk0p1 rootfstype=ext4 rootwait quiet rw"
|
|
|
|
- Prepare args:
|
|
|
|
# spl export fdt ${loadaddr} - ${fdt_addr}
|
|
|
|
- Write args 1MB data (0x800 sectors) to 1MB offset (0x800 sectors)
|
|
|
|
# mmc write 18000000 0x800 0x800
|
|
|
|
- Restart the board and then SPL binary will launch the kernel directly.
|