mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-08 22:24:32 +00:00
a1f79c2170
For using a debug UART on the Wandboard CONFIG_MXC_UART=y must be set in the .config file. To avoid duplicate definitions move the setting from include/configs/wandboard.h to configs/wandboard_defconfig. Document the debug UART settings in the README. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Fabio Estevam <festevam@gmail.com>
49 lines
1.2 KiB
Text
49 lines
1.2 KiB
Text
U-Boot for Wandboard
|
|
--------------------
|
|
|
|
This file contains information for the port of U-Boot to the Wandboard.
|
|
|
|
Wandboard is a development board that has three variants based on the following
|
|
SoCs: mx6 quad, mx6 quad plus, mx6 dual lite and mx6 solo.
|
|
|
|
For more details about Wandboard, please refer to:
|
|
http://www.wandboard.org/
|
|
|
|
Building U-Boot for Wandboard
|
|
-----------------------------
|
|
|
|
To build U-Boot for the Wandboard:
|
|
|
|
$ make wandboard_config
|
|
$ make
|
|
|
|
Flashing U-Boot into the SD card
|
|
--------------------------------
|
|
|
|
- After the 'make' command completes, the generated 'SPL' binary must be
|
|
flashed into the SD card;
|
|
|
|
$ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
|
|
|
|
(Note - the SD card node may vary, so adjust this as needed).
|
|
|
|
- Flash the u-boot.img image into the SD card:
|
|
|
|
sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync
|
|
|
|
- Insert the SD card into the slot located in the bottom of the board (same side
|
|
as the mx6 processor)
|
|
|
|
- Connect the serial cable to the host PC
|
|
|
|
- Power up the board and U-Boot messages will appear in the serial console.
|
|
|
|
Debug UART
|
|
----------
|
|
|
|
The following settings provide a debug UART for the Wandboard:
|
|
|
|
CONFIG_DEBUG_UART=y
|
|
CONFIG_DEBUG_UART_MXC=y
|
|
CONFIG_DEBUG_UART_BASE=0x02020000
|
|
CONFIG_DEBUG_UART_CLOCK=80000000
|