u-boot

History

Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>		2018-05-07 09:34:12 -04:00
..
cgtqmx6eval.c	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
Kconfig	mx6: remove SYS_SOC from board Kconfig	2015-09-13 10:37:29 +02:00
MAINTAINERS	cgtqmx6eval: Fix defconfig name	2015-12-07 14:48:02 +01:00
Makefile	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
README	Use correct spelling of "U-Boot"	2016-02-06 12:00:59 +01:00

README

U-Boot for the Congatec QMX6 boards

This file contains information for the port of U-Boot to the Congatec
QMX6 boards.

1. Building U-Boot
------------------

- Build U-Boot for Congatec QMX6 boards:

$ make mrproper
$ make cgtqmx6eval_defconfig
$ make

This will generate the following binaries:

- SPL
- u-boot.img

2. Flashing U-Boot in the SPI NOR
---------------------------------

Copy SPL and u-boot.img to the exported TFTP directory of the
host PC (/tftpboot , for example).

=> sf probe

=> setenv serverip <server_ip_address>

=> setenv ipaddr <board_ip_address>

=> tftp 0x12000000 SPL

=> sf erase 0x0 0x10000

=> sf write 0x12000000 0x400 0x10000

=> tftp 0x12000000 u-boot.img

=> sf erase 0x10000 0x70000

=> sf write 0x12000000 0x10000 0x70000

Reboot the board and the new U-Boot should come up.

3. Booting from the SD card
---------------------------

- Flash the SPL image into the SD card:

sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync

- Flash the u-boot.img image into the SD card:

sudo dd if=u-boot.img of=/dev/mmcblk0 bs=1k seek=69; sync

- Insert the SD card into the big slot.

The boot medium of Congatec QMX6 boards is the SPI NOR flash, so boot
the board from SPI first.

It is also possible to boot from the SD card slot by using the 'bmode'
command:

=> bmode esdhc4

And then the U-Boot from the big slot will boot.

Note: If the "bmode" command is not available from your pre-installed U-Boot,
these instruction will produce the same effect:

=> mw.l 0x20d8040 0x3850
=> mw.l 0x020d8044 0x10000000
=> reset