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board/avnet/zedboard/: improve readme.txt explanations

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[Thomas: fix small grammar issue noticed by Spenser Gilliland, adjust
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Signed-off-by: Javier Domingo Cansino <javierdo1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Javier Domingo Cansino 2014-06-21 00:28:51 +02:00 committed by Thomas Petazzoni
parent 8d42b6d045
commit 2b6679baba
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board/avnet/zedboard/readme.txt
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@ -5,26 +5,68 @@ System-On-Chip.
Zedboard information including schematics, reference designs, and manuals are Zedboard information including schematics, reference designs, and manuals are
available from http://www.zedboard.org . available from http://www.zedboard.org .
To boot the Zedboard using a buildroot generated image copy the following files The U-Boot firmware for the Xilinx Zynq All Programmable SoC depends
to the sdcard: on some propietary code. This dependency consists of a pair of
zynq-zed.dtb -> devicetree.dtb files are available from the Xilinx SDK installation.
rootfs.cpio.gz.uboot -> uramdisk.image.gz
uImage -> uImage
boot.bin -> boot.bin
U-Boot SPL Support You will need these files from Xilinx SDK installation to generate
------------- the U-Boot firmware:
ps7_init.c
ps7_init.h
Buildroot will create the following files and place them in the
<output>/images directory.
zynq-zed.dtb
rootfs.cpio.uboot
uImage
u-boot.img
boot.bin
uboot.bin -- U-Boot SPL w/ Xilinx boot.bin wrapper
---------------------------------------------------
Due to licensing issues, the files ps7_init.c/h are not able to be Due to licensing issues, the files ps7_init.c/h are not able to be
distributed with the U-Boot source code. These files are required to make a distributed with the U-Boot source code. These files are required to make a
boot.bin file. boot.bin file.
If you already have the Xilinx tools installed, the follwing sequence will If you already have the Xilinx tools installed, the following sequence will
unpack, patch and build the rfs, kernel, uboot, and uboot-spl. unpack, patch and build the rfs, kernel, uboot, and uboot-spl.
make zedboard_defconfig make zedboard_defconfig
make uboot-patch make uboot-patch
cp ${XILINX}/ISE_DS/EDK/sw/lib/hwplatform_templates/zed_hw_platform/ps7_init.{c,h} \ cp ${XILINX}/ISE_DS/EDK/sw/lib/hwplatform_templates/zed_hw_platform/ps7_init.{c,h} \
output/build/uboot-xilinx-v2014.1/boards/xilinx/zynq/ output/build/uboot-xilinx-v2014.1/board/xilinx/zynq/
After copying these files into the U-Boot source tree, you can
continue the build with:
make make
*Notice*
While the build will successfully complete without the ps7_init.*
files, the uboot.bin file generated by this configuration will not
function properly on the Zedboard. Therefore, it is imperative that
the ps7_init.* files be copied into the U-Boot source tree any time
the clean, or uboot-dirclean targets are made.
Resulting system
----------------
A FAT32 partition should be created at the beggining of the SD Card
and the following files should be installed:
/boot.bin
/devicetree.dtb
/uImage
/uramdisk.image.gz
/u-boot.img
All needed files can be taken from output/images/
boot.bin, uImage and u-boot.img are direct copies of the same files
available on output/images/
devicetree.dtb is just zynq-zed.dtb renamed.
uramdisk.image.gz is rootfs.cpio.uboot renamed