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Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
..
imximage.cfg SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
Kconfig pico-imx7d: Add initial support 2017-05-31 09:58:40 +02:00
MAINTAINERS pico-imx7d: Remove bouncing email 2017-06-29 21:30:16 -04:00
Makefile SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
pico-imx7d.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
README pico-imx7d: Add "how to boot with NXP 4.1 Kernel" 2017-09-18 17:15:28 +02:00

README 

How to update U-Boot on pico-imx7d board
----------------------------------------

Required software on the host PC:

- imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader

Build U-Boot for pico:

$ make mrproper
$ make pico-imx7d_defconfig
$ make

This generates the U-Boot binary called u-boot.imx.

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.

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 starts and its messages appear in the console program.

Use the default environment variables:

=> env default -f -a
=> saveenv

Run the UMS command:
=> ums 0 mmc 0

Transfer u-boot.imx to be flashed into the eMMC:

$ sudo dd if=u-boot.imx of=/dev/sdX bs=1K seek=1; sync

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.

Building U-Boot to boot with NXP 4.1 kernel:

The NXP 4.1 kernel boots only in secure boot mode on mx7.

Follow the next steps to enable secure boot:

$ make mrproper
$ make pico-imx7d_defconfig
$ make menuconfig
	-> ARM architecture
	-> [*] Enable support for booting in non-secure mode
	-> [*]   Boot in secure mode by default
	-> Exit
$ make

Flash u-boot.imx using the imx_usb_loader tool.