From bc5833c49a5514237cb18177c0f79df0d564b7da Mon Sep 17 00:00:00 2001 From: Jason Liu Date: Thu, 29 Dec 2011 06:34:19 +0000 Subject: i.mx: i.mx6q: add the initial support for i.mx6q Sabre Lite board Add the initial support for Freescale i.MX6Q Sabre Lite board Signed-off-by: Dirk Behme Signed-off-by: Jason Liu CC: Eric Nelson --- doc/README.mx6qsabrelite | 67 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 doc/README.mx6qsabrelite (limited to 'doc') diff --git a/doc/README.mx6qsabrelite b/doc/README.mx6qsabrelite new file mode 100644 index 0000000..4add2bf --- /dev/null +++ b/doc/README.mx6qsabrelite @@ -0,0 +1,67 @@ +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. -- cgit v1.1