path: root/board
diff options
authorFabio Estevam <>2015-03-02 12:57:22 -0300
committerStefano Babic <>2015-03-13 13:23:23 +0100
commit1f9d1cf6b28ec9e2230299eb8f81e58a40070655 (patch)
tree47c7ba918a80d6a830e9b64f08115821ad0d02b8 /board
parent97ee459033f42e41be732a4baba06db7ba6e95e1 (diff)
warp: Add a README file
Provide instructions on how to upgrade U-boot in the eMMC. Signed-off-by: Fabio Estevam <> Acked-by: Otavio Salvador <>
Diffstat (limited to 'board')
1 files changed, 56 insertions, 0 deletions
diff --git a/board/warp/README b/board/warp/README
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index 0000000000..0e1f076605
--- /dev/null
+++ b/board/warp/README
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+How to Update U-boot on Warp board
+Required software on the host PC:
+- imx_usb_loader:
+- dfu-util:
+Build U-boot for Warp:
+$ make mrproper
+$ make warp_config
+$ make
+This will generate the U-boot binary called u-boot.imx.
+Put warp board in USB download mode
+Connect a USB to serial adapter between the host PC and warp
+Connect a USB cable between the OTG warp port and the host PC
+Open a terminal program such as minicom
+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.
+Use the default environment variables:
+=> env default -f -a
+=> save
+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 succesful
+Ctrl+C to exit ...
+Remove power from the warp board.
+Put warp board into normal boot mode
+Power up the board and the new updated U-boot should boot from eMMC
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