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@ -22,13 +22,14 @@ If the eMMC has already a U-Boot flashed with DFU support then |
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the user can go to step 2 below in order to update U-Boot. |
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Put pico board in USB download mode (refer to the document |
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http://www.wandboard.org/images/hobbit/hobbitboard-imx6ul-reva1.pdf page 15) |
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http://www.wandboard.org/images/hobbit/hobbitboard-imx6ul-reva1.pdf |
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page 15). |
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Connect a USB to serial adapter between the host PC and pico |
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Connect a USB to serial adapter between the host PC and pico. |
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Connect a USB cable between the OTG pico port and the host PC |
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Connect a USB cable between the OTG pico port and the host PC. |
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Open a terminal program such as minicom |
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Open a terminal program such as minicom. |
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Copy SPL and u-boot.img to the imx_usb_loader folder. |
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@ -40,7 +41,7 @@ Load the u-boot.img binary via USB: |
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$ sudo ./imx_usb u-boot.img |
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Then U-Boot should start and its messages will appear in the console program. |
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Then U-Boot starts and its messages appear in the console program. |
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Use the default environment variables: |
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@ -49,7 +50,8 @@ Use the default environment variables: |
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2. Flashing U-Boot into the eMMC |
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Run the DFU command: |
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Run the DFU agent so we can flash the new images using dfu-util tool: |
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=> dfu 0 mmc 0 |
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Flash SPL and u-boot.img into the eMMC running the following commands on a PC: |
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@ -58,14 +60,8 @@ $ sudo dfu-util -D SPL -a spl |
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$ sudo dfu-util -D u-boot.img -a u-boot |
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Then on the U-Boot prompt the following message should be seen after a |
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successful upgrade: |
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#DOWNLOAD ... OK |
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Ctrl+C to exit ... |
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Remove power from the pico board. |
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Put pico board into normal boot mode |
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Put pico board into normal boot mode. |
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Power up the board and the new updated U-Boot should boot from eMMC. |
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