53 lines
2.1 KiB
Plaintext
53 lines
2.1 KiB
Plaintext
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This is the Buildroot support for Zynq boards. Zynq boards are available from
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Xilinx and some third party vendors, but the build procedure is very similar.
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Currently, three boards are natively supported by Buildroot:
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- Xilinx ZC706 board (zynq_zc706_defconfig)
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- Avnet ZedBoard (zynq_zed_defconfig)
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- Avnet MicroZed (zynq_microzed_defconfig)
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The following build procedure focuses on them, but you can adjust it to your
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board even if it is not listed above. Major Zynq-based boards are supported by
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U-Boot, and their Device Trees are merged in Linux Kernel. If your board is the
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case, booting the kernel is a piece of cake. All you need to do is to change:
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- Kernel Device Tree file name (BR2_LINUX_KERNEL_INTREE_DTS_NAME)
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- U-Boot board defconfig (BR2_TARGET_UBOOT_BOARDNAME)
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Steps to create a working system for a Zynq board:
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1) Configuration (do one of the followings)
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make zynq_zc706_defconfig (ZC706)
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make zynq_zed_defconfig (Zedboard)
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make zynq_microzed_defconfig (MicroZed)
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2) make
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3) All needed files will be available in the output/images directory.
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Create a FAT32 partition at the beginning of your SD Card and copy files:
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- boot.bin
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- u-boot.img
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- uImage
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- uramdisk.image.gz (should be renamed from rootfs.cpio.uboot)
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- devicetree.dtb (should be renamed from zynq-***.dtb)
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into your SD card
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4) boot your board
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You can alter the booting procedure by creating a file uEnv.txt
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in the root of the SD card. It is a plain text file in format
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<key>=<value> one per line:
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kernel_image=myimage
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modeboot=myboot
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myboot=...
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Note:
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The DTB for MicroZed is the same as the one for the Zedboard (zynq-zed.dtb),
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and this is the recommended solution, see
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https://forums.xilinx.com/t5/Embedded-Linux/Microzed-default-device-tree-dts/td-p/432856.
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References:
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- ZC706 information including schematics, reference designs, and manuals are
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available from
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http://www.xilinx.com/products/boards-and-kits/ek-z7-zc706-g.html.
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- Zedboard/Microzed information including schematics, reference designs, and
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manuals are available from http://www.zedboard.org .
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