upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.3 KiB
68 lines
2.3 KiB
13 years ago
|
U-Boot for the Freescale i.MX6q SabreLite board
|
||
|
|
|
||
|
|
This file contains information for the port of U-Boot to the Freescale
|
||
|
|
i.MX6q SabreLite board.
|
||
|
|
|
||
|
|
1. Boot source, boot from SD card
|
||
|
|
---------------------------------
|
||
|
|
|
||
|
|
The recent mainline U-Boot for the Freescale i.MX6q SabreLite board supports
|
||
|
|
boot from SD card only. However, by default, the early version of SabreLite
|
||
|
|
boards boot from the SPI NOR flash. These boards need to be reflashed with
|
||
|
|
a small SD card loader to support boot from SD card. This small SD card loader
|
||
|
|
will be flashed into the SPI NOR. The board will still boot from SPI NOR, but
|
||
|
|
the loader will in turn request the BootROM to load the U-Boot from SD card.
|
||
|
|
At the moment of writing, please check with Freescale on the availablity of
|
||
|
|
this small SD loader binary.
|
||
|
|
|
||
|
|
To update the SPI-NOR on the SabreLite board without the Freescale
|
||
|
|
manufacturing tool use the following procedure:
|
||
|
|
|
||
|
|
1. Write this SD card loader onto a large SD card using:
|
||
|
|
|
||
|
|
sudo dd if=MX6_SPI_to_SD_loader.bin of=/dev/sXx
|
||
|
|
|
||
|
|
Note: Replace sXx with the device representing the SD card in your system.
|
||
|
|
|
||
|
|
Note: This writes SD card loader at address 0
|
||
|
|
|
||
|
|
2. Put this SD card into the slot for the large SD card (SD3 on the bottom of
|
||
|
|
the board)
|
||
|
|
|
||
|
|
3. Power-up the SabreLite, press 'space' to enter command mode in the U-Boot
|
||
|
|
(the default one the board is shipped with, starting from the SPI NOR) and
|
||
|
|
enter the following commands:
|
||
|
|
|
||
|
|
MX6Q SABRELITE U-Boot > mmc dev 0
|
||
|
|
MX6Q SABRELITE U-Boot > mmc read 0x10800000 0 200
|
||
|
|
MX6Q SABRELITE U-Boot > sf probe 1
|
||
|
|
MX6Q SABRELITE U-Boot > sf erase 0 0x40000
|
||
|
|
MX6Q SABRELITE U-Boot > sf write 0x10800000 0 0x40000
|
||
|
|
|
||
|
|
4. done.
|
||
|
|
|
||
|
|
In case you somehow do not succeed with this procedure you will have to use
|
||
|
|
the Freescale manufacturing tool in order to reflash the SPI-NOR.
|
||
|
|
|
||
|
|
Note: The board now boots from full size SD3 on the bottom of the board. NOT
|
||
|
|
the micro SD4/BOOT slot on the top of the board. I.e. you have to use
|
||
|
|
full size SD cards.
|
||
|
|
|
||
|
|
This information is taken from
|
||
|
|
|
||
|
|
https://wiki.linaro.org/Boards/MX6QSabreLite
|
||
|
|
|
||
|
|
2. Build
|
||
|
|
--------
|
||
|
|
|
||
|
|
To build U-Boot for the SabreLite board:
|
||
|
|
|
||
|
|
make mx6qsabrelite_config
|
||
|
|
make u-boot.imx
|
||
|
|
|
||
|
|
To copy the resulting u-boot.imx to the SD card:
|
||
|
|
|
||
|
|
sudo dd if=u-boot.imx of=/dev/sXx bs=512 seek=2&&sudo sync
|
||
|
|
|
||
|
|
Note: Replace sXx with the device representing the SD card in your system.
|