From: Fabio Estevam festevam@gmail.com
Update the README file to take into accound the switch to SPL.
Signed-off-by: Fabio Estevam festevam@gmail.com Signed-off-by: Fabio Berton fabio.berton@ossystems.com.br Signed-off-by: Otavio Salvador otavio@ossystems.com.br ---
board/technexion/pico-imx7d/README | 24 +++++++++++++++++------- 1 file 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.