diff options
| -rw-r--r-- | board/technexion/pico-imx7d/README | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/board/technexion/pico-imx7d/README b/board/technexion/pico-imx7d/README index aa9d72c5d1..24eb97e82c 100644 --- a/board/technexion/pico-imx7d/README +++ b/board/technexion/pico-imx7d/README @@ -11,7 +11,13 @@ $ make mrproper $ make pico-imx7d_defconfig $ make -This generates the U-Boot binary called u-boot.imx. +This generates the SPL and u-boot.img binaries. + +1. Loading U-Boot via USB Serial Download Protocol + +Note: This method is convenient for development purposes. +If the eMMC has already a U-Boot flashed with DFU support then +the user can go to step 2 below in order to update U-Boot. Put pico board in USB download mode (refer to the PICO-iMX7D Quick Start Guide page 3) @@ -22,11 +28,15 @@ Connect a USB cable between the OTG pico port and the host PC. Open a terminal program such as minicom. -Copy u-boot.imx to the imx_usb_loader folder. +Copy SPL and u-boot.img to the imx_usb_loader folder. + +Load the SPL binary via USB: -Load u-boot.imx via USB: +$ sudo ./imx_usb SPL -$ sudo ./imx_usb u-boot.imx +Load the u-boot.img binary via USB: + +$ sudo ./imx_usb u-boot.img Then U-Boot starts and its messages appear in the console program. @@ -35,16 +45,16 @@ Use the default environment variables: => env default -f -a => saveenv +2. Flashing U-Boot into the eMMC + Run the DFU agent so we can flash the new images using dfu-util tool: => dfu 0 mmc 0 -Flash SPL into the eMMC: +Flash SPL and u-boot.img into the eMMC running the following commands on a PC: $ sudo dfu-util -D SPL -a spl -Flash u-boot.img into the eMMC: - $ sudo dfu-util -D u-boot.img -a u-boot Remove power from the pico board. |