Explain how to flash the eMMC and how to boot from it.
Signed-off-by: Breno Lima breno.lima@nxp.com --- Changes since v2: -Fix number of methods for booting mx6sabresd boards.
board/freescale/mx6sabresd/README | 55 +++++++++++++++++++++++++++++++++------ 1 file changed, 47 insertions(+), 8 deletions(-)
diff --git a/board/freescale/mx6sabresd/README b/board/freescale/mx6sabresd/README index 5814b9d..bc0c0d0 100644 --- a/board/freescale/mx6sabresd/README +++ b/board/freescale/mx6sabresd/README @@ -1,17 +1,19 @@ How to use and build U-Boot on mx6sabresd: ----------------------------------
-Currently there are three methods for booting mx6sabresd boards: +Currently there are four methods for booting mx6sabresd boards:
-1. Booting via Normal U-Boot (u-boot.imx) +1. Booting from SD card via normal U-Boot (u-boot.imx)
-2. Booting via SPL (SPL and u-boot.img) +2. Booting from eMMC via normal U-Boot
-3. Booting via Falcon mode (SPL launches the kernel directly) +3. Booting via SPL (SPL and u-boot.img)
+4. Booting via Falcon mode (SPL launches the kernel directly)
-1. Booting via Normal U-Boot ----------------------------- + +1. Booting from SD card via normal U-Boot +-----------------------------------------
$ make mx6qsabresd_defconfig (If you want to build for mx6qsabresd)
@@ -28,7 +30,44 @@ This will generate the image called u-boot.imx. $ sudo dd if=u-boot.imx of=/dev/sdb bs=1K seek=1 && sync
-2. Booting via SPL +2. Booting from eMMC 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 eMMC: + +Set SW6 to download mode: 00001100 + +Plug a usb cable to USB-OTG and load the u-boot image using the imx_usb_loader +tool (https://github.com/boundarydevices/imx_usb_loader): + +$ sudo ./imx_usb u-boot.imx + +In U-boot change the eMMC partition config: + +=> mmc partconf 2 1 0 0 + +Mount the eMMC in the host PC: + +=> ums 0 mmc 2 + +Flash the u-boot.imx binary + +$ sudo dd if=u-boot.imx of=/dev/sdX bs=1K seek=1 && sync + +Set SW6 to eMMC 8-bit boot: 11010110 + + +3. Booting via SPL ------------------
Other method for building U-Boot on mx6qsabresd and mx6qpsabresd is @@ -48,7 +87,7 @@ $ sudo dd if=SPL of=/dev/sdb bs=1K seek=1 && sync $ sudo dd if=u-boot.img of=/dev/sdbbs=1K seek=69 && sync
-3. Booting via Falcon mode +4. Booting via Falcon mode --------------------------
$ make mx6sabresd_spl_defconfig