b7ff789e0e
This patch adds support for Xilinx Kria KR260 starter kit. KR260 features can be found here: https://www.xilinx.com/products/som/kria/kr260-robotics-starter-kit.html While the Kria SOM is based on a ZynqMP SoC, there are some key boot config differences from the other ZynqMP evaluation boards. 1. There are no boot switches on Kria SOMs. The boot mode is thus hard configured for QSPI flash. A pre-programmed boot.bin comes with every Starter Kit. U-Boot can then find the Linux kernel and file system on the SD card. Optional instructions for updating the boot.bin in the QSPI flash can be found in the readme.txt file and the link below. https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/1641152513/Kria+K26+SOM 2. Kria SOMs use UART1 for the console instead of UART0. For this reason, Kria Starter Kits will use a separate extlinux.conf file from other ZynqMP evaluation boards. 3. The KR260 has a USB to SD card bridge, so the Linux kernel and file system are found on /dev/sda1 and /dev/sda2. Signed-off-by: Neal Frager <neal.frager@amd.com> [Peter: fix kr260.sh shellcheck warnings, similar to kv260.sh] Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
112 lines
3.2 KiB
Plaintext
112 lines
3.2 KiB
Plaintext
**************************************************
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Xilinx Kria SOM Starter Kits - ZynqMP SoC
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**************************************************
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This document describes the Buildroot support for the Kria
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KV260 and KR260 starter kits by Xilinx, based on Kria SOM including the
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Zynq UltraScale+ MPSoC (aka ZynqMP). It has been tested with
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the KV260 and KR260 production boards.
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Evaluation board features can be found here with the links below.
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KV260:
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https://www.xilinx.com/products/som/kria/kv260-vision-starter-kit.html
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KR260:
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https://www.xilinx.com/products/som/kria/kr260-robotics-starter-kit.html
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How to build it
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===============
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Configure Buildroot:
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$ make zynqmp_kria_kv260_defconfig
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Compile everything and build the rootfs image:
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$ make
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Result of the build
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-------------------
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After building, you should get a tree like this:
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output/images/
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+-- atf-uboot.ub
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+-- bl31.bin
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+-- boot.bin
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+-- boot.vfat
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+-- Image
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+-- rootfs.ext2
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+-- rootfs.ext4 -> rootfs.ext2
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+-- sdcard.img
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+-- system.dtb -> smk-k26-revA-sck-kv-g-revB.dtb
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+-- u-boot.itb
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`-- smk-k26-revA-sck-kv-g-revB.dtb
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How to write the SD card
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========================
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WARNING! This will destroy all the card content. Use with care!
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The sdcard.img file is a complete bootable image ready to be written
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on the boot medium. To install it, simply copy the image to an SD
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card:
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# dd if=output/images/sdcard.img of=/dev/sdX
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Where 'sdX' is the device node of the SD.
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Eject the SD card, insert it in the board, and power it up.
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How to write boot.bin and u-boot.itb to QSPI boot flash
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=======================================================
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The Kria SOMs are preconfigured to boot initially from QSPI.
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This makes these boards different from other ZynqMP boards
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in that the boot.bin and u-boot.itb files need to be flashed
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into the QSPI boot flash such that U-Boot can then load all
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of the remaining images from the SD card.
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In addition, the KV260 and KR260 Starter Kits QSPI comes pre-flashed with
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a utility designed to make updating the QSPI flash memory
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easier.
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Instructions for using these utilities to update the files
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in QSPI flash can be found on the wiki link below.
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https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/1641152513/Kria+K26+SOM#Boot-Firmware-Updates
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Additionally, it is possible to use u-boot for updating the
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QSPI with new boot.bin and u-boot.itb images with the u-boot
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commands below.
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KV260 Flashing Instructions:
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Flashing u-boot.itb:
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$ sf probe
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$ fatload mmc 1 0x1000000 u-boot.itb
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$ sf erase 0xf80000 +$filesize
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$ sf write 0x1000000 0xf80000 $filesize
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Flashing boot.bin:
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$ sf probe
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$ fatload mmc 1 0x1000000 boot.bin
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$ sf erase 0x200000 +$filesize
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$ sf write 0x1000000 0x200000 $filesize
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KR260 Flashing Instructions:
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Flashing u-boot.itb:
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$ sf probe
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$ fatload usb 0 0x1000000 u-boot.itb
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$ sf erase 0xf80000 +$filesize
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$ sf write 0x1000000 0xf80000 $filesize
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Flashing boot.bin:
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$ sf probe
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$ fatload usb 0 0x1000000 boot.bin
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$ sf erase 0x200000 +$filesize
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$ sf write 0x1000000 0x200000 $filesize
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It is possible to boot the Buildroot generated SD card image without
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updating the QSPI boot.bin image, so this is an optional step.
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