path: root/board
diff options
authorMarco Franchi <>2016-06-10 14:56:23 -0300
committerStefano Babic <>2016-06-18 10:36:00 +0200
commit72a868f16eeffd880b2ed77ab4bc9e072446f5a7 (patch)
tree34c180acfce554bcd8a0903807ea4ff03d693055 /board
parent0a35cc9395b7e4e5bc2b1370016f7c3156f945a4 (diff)
warp7: Add README file
Add a README file for helping users to install U-Boot into the eMMC. Signed-off-by: Marco Franchi <> Acked-by: Fabio Estevam <>
Diffstat (limited to 'board')
1 files changed, 63 insertions, 0 deletions
diff --git a/board/warp7/README b/board/warp7/README
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+How to Update U-Boot on Warp7 board
+Required software on the host PC:
+- imx_usb_loader:
+- dfu-util: (if you are in a
+Debian distribution then you can get it via libdfu-dev package)
+- libusb: (if you are in a Debian distribution
+then you can get it via libusb-dev and libusb-1.0-0-dev)
+In U-Boot folder, build U-Boot for Warp7:
+$ make mrproper
+$ make warp7_config
+$ make
+This will generate the U-Boot binary called u-boot.imx.
+Put warp7 board in USB download mode:
+Remove the CPU board from the base board then put switch 2 in the upper
+Connect a USB to serial adapter between the host PC and warp7
+Connect a USB cable between the OTG warp7 port and the host PC
+Copy u-boot.imx to the imx_usb_loader folder.
+Load u-boot.imx via USB:
+$ sudo ./imx_usb u-boot.imx
+Then U-Boot should start and its messages will appear in the console program.
+Open a terminal program such as minicom
+Use the default environment variables:
+=> env default -f -a
+=> saveenv
+Run the DFU command:
+=> dfu 0 mmc 0
+Transfer u-boot.imx that will be flashed into the eMMC:
+$ sudo dfu-util -D u-boot.imx -a boot
+Then on the U-Boot prompt the following message should be seen after a
+successful upgrade:
+Ctrl+C to exit ...
+Remove power from the warp7 board.
+Put warp7 board into normal boot mode (put the switch 2 in the lower position)
+Power up the board and the new updated U-Boot should boot from eMMC
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