mx6qsabrelite: Remove mx6qsabrelite code in favor of nitrogen6x

mx6qsabrelite and nitrogen6q boards are hardware compatible, so let's avoid the
code duplication and only use the nitrogen6x source code to make board code
maintainance easier.

Tested booting a mainline device tree kernel on a mx6qsabrelite board.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/board/boundary/nitrogen6x/README.mx6qsabrelite b/board/boundary/nitrogen6x/README.mx6qsabrelite
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+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 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.
+
+The SD card loader is available from
+
+https://wiki.linaro.org/Boards/MX6QSabreLite
+
+under a open-source 3-clause BSD license.
+
+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=iMX6DQ_SPI_to_uSDHC3.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). Make sure SW1 switch is at position "00", so that it can boot
+from the fuses.
+
+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
+ 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
+
+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.