0017c3daa8
This patch improves the documentation for kria k26 som qspi programming. Signed-off-by: Neal Frager <neal.frager@amd.com> Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net> [Peter: drop trailing spaces] Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
95 lines
2.7 KiB
Plaintext
95 lines
2.7 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 starter kit 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 production board.
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Evaluation board features can be found here with the link below.
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KV260:
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https://www.xilinx.com/products/boards-and-kits/kv260.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 Starter Kit 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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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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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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