kumquat-buildroot

NetCube-Systems-Austria/kumquat-buildroot

History

Romain Naour e36240d2ab configs/freescale_imx8mpevk: bump to version lf-6.1.22-2.0.0

Update the linux-imx kernel to be aligned with the NXP BSP
LF6.1.22_2.0.0 (same release used in meta-freescale [1]).

Add BR2_TARGET_UBOOT_NEEDS_GNUTLS=y and BR2_TARGET_UBOOT_NEEDS_UTIL_LINUX=y
since they are new dependencies for building mkeficapsule u-boot tool.

The uboot-imx doesn't use the default imx8mp-evk devicetree anymore due
to commit [2]:

"Change to use imx8mp-evk-revb4.dtb and imx8mp-ddr4-evk-revb4.dtb
 as default kernel DTB for iMX8MP re-design EVK board. Old EVK
 board is EOL, to boot old EVK, user can switch to old DTB manually."

Since the freescale_imx8mpevk_defconfig only install imx8mp-evk.dtb in
the final image, the boot stop with:

  Booting from mmc ...
  Failed to load 'imx8mp-evk-revb4.dtb'
  WARN: Cannot load the DT

Add a u-boot defconfig fragment to revert this change [2] and use the
imx8mp-evk.dtb by default.

Runtime tested on i.MX 8M Plus EVK REV B2.

[1] e6b1b6725c
[2] a60e787a6e

Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

2023-09-30 18:00:00 +02:00

readme.txt

uboot-fragment.config

readme.txt

*********************
NXP i.MX8MP EVK board
*********************

This file documents the Buildroot support for the i.MX 8M Plus EVK board.

Build
=====

First, configure Buildroot for the i.MX 8M Plus EVK board:

  make freescale_imx8mpevk_defconfig

Build all components:

  make

You will find in output/images/ the following files:
  - bl31.bin
  - boot.vfat
  - ddr_fw.bin
  - Image
  - imx8-boot-sd.bin
  - imx8mp-evk.dtb
  - lpddr4_pmu_train_fw.bin
  - rootfs.ext2
  - rootfs.ext4
  - rootfs.tar
  - sdcard.img
  - u-boot.bin
  - u-boot.itb
  - u-boot-nodtb.bin
  - u-boot-spl.bin
  - u-boot-spl-ddr.bin

Create a bootable SD card
=========================

To determine the device associated to the SD card have a look in the
/proc/partitions file:

  cat /proc/partitions

Buildroot prepares a bootable "sdcard.img" image in the output/images/
directory, ready to be dumped on a SD card. Launch the following
command as root:

  dd if=output/images/sdcard.img of=/dev/<your-sd-device>

*** WARNING! This will destroy all the card content. Use with care! ***

For details about the medium image layout, see the definition in
board/freescale/common/imx/genimage.cfg.template_imx8.

Boot the i.MX 8M Plus EVK board
===============================

To boot your newly created system (refer to the i.MX 8M Plus EVK Documentation
[1] for guidance):
- insert the SD card in the SD slot of the board;
- Configure the switches as follows (X = "don't care"):
SW4:	0011 SW4[1-4]
- put a micro USB cable into the Debug USB Port and connect using a terminal
  emulator at 115200 bps, 8n1;
- power on the board.

Enjoy!

References
==========
[1] https://www.nxp.com/document/guide/get-started-with-the-i-mx-8m-plus-evk:GS-iMX-8M-Plus-EVK