mirror of
https://github.com/brain-hackers/u-boot-brain
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![]() Fixed typo for doc/README.imximage on respective imximage.cfg files. Cc: Tom Rini <trini@konsulko.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Acked-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> |
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.. | ||
Kconfig | ||
MAINTAINERS | ||
Makefile | ||
mx6dlsabresd.cfg | ||
mx6q_4x_mt41j128.cfg | ||
mx6sabresd.c | ||
README |
How to use and build U-Boot on mx6sabresd: ---------------------------------- Currently there are three methods for booting mx6sabresd boards: 1. Booting via Normal U-Boot (u-boot.imx) 2. Booting via SPL (SPL and u-boot.img) 3. Booting via Falcon mode (SPL launches the kernel directly) 1. Booting via Normal U-Boot ---------------------------- $ make mx6qsabresd_defconfig (If you want to build for mx6qsabresd) or $ make mx6dlsabresd_defconfig (If you want to build for mx6dlsabresd) $ make This will generate the image called u-boot.imx. - Flash the u-boot.imx binary into the SD card: $ sudo dd if=u-boot.imx of=/dev/sdb bs=1K seek=1 && sync 2. Booting via SPL ------------------ Other method for building U-Boot on mx6qsabresd and mx6qpsabresd is through SPL. In order to do so: $ make mx6sabresd_spl_defconfig $ make This will generate the SPL image called SPL and the u-boot.img. - Flash the SPL image into the SD card: $ sudo dd if=SPL of=/dev/sdb bs=1K seek=1 && sync - Flash the u-boot.img image into the SD card: $ sudo dd if=u-boot.img of=/dev/sdbbs=1K seek=69 && sync 3. Booting via Falcon mode -------------------------- $ make mx6sabresd_spl_defconfig $ make This will generate the SPL image called SPL and the u-boot.img. - Flash the SPL image into the SD card: $ sudo dd if=SPL of=/dev/sdb bs=1K seek=1 oflag=sync status=none && sync - Flash the u-boot.img image into the SD card: $ sudo dd if=u-boot.img of=/dev/sdbbs=1K seek=69 oflag=sync status=none && sync Create a partition for root file system and extract it there: $ sudo tar xvf rootfs.tar.gz -C /media/root The SD card must have enough space for raw "args" and "kernel". To configure Falcon mode for the first time, on U-Boot do the following commands: - Setup the IP server: # setenv serverip <server_ip_address> - Download dtb file: # dhcp ${fdt_addr} imx6q-sabresd.dtb - Download kernel image: # dhcp ${loadaddr} uImage - Write kernel at 2MB offset: # mmc write ${loadaddr} 0x1000 0x4000 - Setup kernel bootargs: # setenv bootargs "console=ttymxc0,115200 root=/dev/mmcblk1p1 rootfstype=ext4 rootwait quiet rw" - Prepare args: # spl export fdt ${loadaddr} - ${fdt_addr} - Write args 1MB data (0x800 sectors) to 1MB offset (0x800 sectors) # mmc write 18000000 0x800 0x800 - Press KEY_VOL_UP key, power up the board and then SPL binary will launch the kernel directly.