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u-boot/board/freescale/mx6sabreauto
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Masahiro Yamada b08c8c4870 libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h> 
Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
  include/libfdt.h         -> include/linux/libfdt.h
  include/libfdt_env.h     -> include/linux/libfdt_env.h

and replaces include directives:
  #include <libfdt.h>      -> #include <linux/libfdt.h>
  #include <libfdt_env.h>  -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-03-05 10:16:28 -05:00
..
Kconfig mx6sabreauto: Update to SPL only mode 2017-07-12 09:44:22 +02:00
MAINTAINERS mx6sabreauto: Update to SPL only mode 2017-07-12 09:44:22 +02:00
Makefile mx6sabreauto: Update to SPL only mode 2017-07-12 09:44:22 +02:00
mx6sabreauto.c libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h> 2018-03-05 10:16:28 -05:00
README mx6sabreauto: Add Falcon mode support 2017-07-12 10:28:19 +02:00

README 

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.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.img binary into the SD card:

$ sudo dd if=u-boot.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.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.img image into the SD card:

$ sudo dd if=u-boot.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.