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authorGravatar Joris Offouga <offougajoris@gmail.com>2019-07-09 11:57:03 +0200
committerGravatar Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>2019-07-09 20:04:58 +0200
commitbe65c8f5c4a9b0c2401de08070a4a141ff6a44fd (patch)
tree08f41a50fe5427e534dd90f12b02897a70af0188 /board/technexion
parent4f9f3a0e9695e670c707d938096ec620c612b694 (diff)
downloadbuildroot-be65c8f5c4a9b0c2401de08070a4a141ff6a44fd.tar.gz
buildroot-be65c8f5c4a9b0c2401de08070a4a141ff6a44fd.tar.bz2
configs/imx7dpico: Bump U-Boot to 2019.07 and kernel to version 5.1.16.
Also - adjust the U-Boot binary name after DM conversion. - add missing notes about flashing U-Boot and SPL Signed-off-by: Joris Offouga <offougajoris@gmail.com> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Diffstat (limited to 'board/technexion')
-rw-r--r--board/technexion/imx7dpico/readme.txt55
1 files changed, 54 insertions, 1 deletions
diff --git a/board/technexion/imx7dpico/readme.txt b/board/technexion/imx7dpico/readme.txt
index 1b9e80a0fd..53197d458d 100644
--- a/board/technexion/imx7dpico/readme.txt
+++ b/board/technexion/imx7dpico/readme.txt
@@ -20,10 +20,63 @@ You will find in output/images/ the following files:
- rootfs.ext4
- rootfs.tar
- sdcard.img
- - u-boot.img
+ - u-boot-dtb.img
- SPL
- zImage
+Flash U-Boot and SPL
+=====
+
+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)
+
+Connect a USB to serial adapter between the host PC and pico.
+
+Connect a USB cable between the OTG pico port and the host PC.
+
+Note: Some computers may be a bit strict with USB current draw and will
+shut down their ports if the draw is too high. The solution for that is
+to use an externally powered USB hub between the board and the host computer.
+
+Open a terminal program such as minicom.
+
+Copy SPL and u-boot-dtb.img to the imx_usb_loader folder.
+
+Load the SPL binary via USB:
+
+$ sudo ./imx_usb SPL
+
+Load the u-boot-dtb.img binary via USB:
+
+$ sudo ./imx_usb u-boot-dtb.img
+
+Then U-Boot starts and its messages appear in the console program.
+
+Use the default environment variables:
+
+=> env default -f -a
+=> saveenv
+
+Run the DFU agent so we can flash the new images using dfu-util tool:
+
+=> dfu 0 mmc 0
+
+Flash SPL and u-boot-dtb.img into the eMMC running the following commands on a PC:
+
+$ sudo dfu-util -D SPL -a spl
+
+$ sudo dfu-util -D u-boot-dtb.img -a u-boot
+
+Remove power from the pico board.
+
+Put pico board into normal boot mode.
+
+Power up the board and the new updated U-Boot should boot from eMMC.
+
Flash the eMMC
==============