9675f6150c
Update the zynq readme.txt to add documentation for the zc702 and correct documentation that was no longer up to date. Signed-off-by: Neal Frager <neal.frager@amd.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
88 lines
3.3 KiB
Plaintext
88 lines
3.3 KiB
Plaintext
This is the Buildroot support for Zynq boards. Zynq boards are available from
|
|
Xilinx and some third party vendors, but the build procedure is very similar.
|
|
|
|
Currently, four boards are natively supported by Buildroot:
|
|
- Xilinx ZC702 board (zynq_zc702_defconfig)
|
|
- Xilinx ZC706 board (zynq_zc706_defconfig)
|
|
- Avnet ZedBoard (zynq_zed_defconfig)
|
|
- Avnet MicroZed (zynq_microzed_defconfig)
|
|
|
|
Steps to create a working system for a Zynq board:
|
|
|
|
1) Configuration (do one of the following)
|
|
make zynq_zc702_defconfig (ZC702)
|
|
make zynq_zc706_defconfig (ZC706)
|
|
make zynq_zed_defconfig (Zedboard)
|
|
make zynq_microzed_defconfig (MicroZed)
|
|
2) make
|
|
3) All needed files will be available in the output/images directory.
|
|
The sdcard.img file is a complete bootable image ready to be written
|
|
on the boot medium. To install it, simply copy the image to an SD
|
|
card:
|
|
|
|
# dd if=output/images/sdcard.img of=/dev/sdX
|
|
|
|
Where 'sdX' is the device node of the uSD.
|
|
4) boot your board
|
|
|
|
You can alter the booting procedure by creating a file uEnv.txt
|
|
in the root of the SD card. It is a plain text file in format
|
|
<key>=<value> one per line:
|
|
|
|
kernel_image=myimage
|
|
modeboot=myboot
|
|
myboot=...
|
|
|
|
References:
|
|
- ZC702 information including schematics, reference designs, and manuals are
|
|
available from
|
|
https://www.xilinx.com/products/boards-and-kits/ek-z7-zc702-g.html
|
|
|
|
- ZC706 information including schematics, reference designs, and manuals are
|
|
available from
|
|
http://www.xilinx.com/products/boards-and-kits/ek-z7-zc706-g.html.
|
|
|
|
- Zedboard/Microzed information including schematics, reference designs, and
|
|
manuals are available from http://www.zedboard.org .
|
|
|
|
Support for other boards:
|
|
|
|
If you want to build a system for other boards based on the same SoC
|
|
(for ex. Digilent Zybo board), and the board is already supported by
|
|
the upstream kernel and U-Boot, you simply need to change the
|
|
following Buildroot options:
|
|
|
|
- Kernel Device Tree file name (BR2_LINUX_KERNEL_INTREE_DTS_NAME)
|
|
- U-Boot (BR2_TARGET_UBOOT_CUSTOM_MAKEOPTS="DEVICE_TREE=<dts file name>")
|
|
|
|
Custom ps7_init_gpl.c/h support:
|
|
|
|
To generate a working boot.bin image, ps7_init_gpl.c/h are required in
|
|
the U-Boot source tree. Without those files, boot.bin will be built
|
|
successfully but it will not be functional at all. Those files are
|
|
output from the Xilinx tools, but for convenience, U-Boot includes the
|
|
default ps7_init_gpl.c/h of popular boards. Those files may need to be
|
|
updated for any programmable logic customizations which impact
|
|
ps7_init (clock/pin setup & mapping/AXI bridge setup/etc). See
|
|
board/xilinx/zynq/ directory of U-Boot for natively supported ps7_init
|
|
files. If the ps7_init files for your board are not found in U-Boot,
|
|
you need to add them by yourself.
|
|
|
|
1) Start with a defconfig supported by Buildroot (e.g. Zedboard)
|
|
make zynq_zed_defconfig
|
|
|
|
2) make uboot-menuconfig
|
|
Visit the following menu and enable CONFIG_ZYNQ_CUSTOM_INIT.
|
|
|
|
ARM architecture --->
|
|
[*] Use custom ps7_init provided by Xilinx tool
|
|
|
|
3) Copy ps7_init_gpl.c/h generated by the Xilinx tools into
|
|
output/build/uboot-xilinx-<pkg version>/board/xilinx/zynq/custom_hw_platform/
|
|
|
|
4) make
|
|
|
|
Note: The files in step 3 will need to be re-copied after cleaning the
|
|
output directory and at this time, there is no way to save them as
|
|
part of the buildroot configuration, except as a U-Boot patch.
|