07 Boot sequence on FPGA based SoC. - alex-aleyan/xilinx GitHub Wiki

References:

• Linux Boot Process
• Booting ZYNQ Mohammad Sadri YouTube
• Look into System V literature.

Overview:

• Boot Sequence on FPGA based SoC (see hdl/linux/u-boot-xlnx-include/configs/zynq-common.h):
  • Load Boot Loader.
  • PL Bitstream (system.bit.bin file).
  • U-Boot.
  • KERNEL image (uImage).
  • Device Tree image (devicetree.dtb file).
  • ROOT File System (uramdisk.image.gz file).
  • Device Tree Addresses.
• Boot Sequence on FPGA based SoC

      Power on
         || 
         \/ 
        FSBL 
 (PS init; ps7_init)
         || 
         \/ 
        FSBL 
(program PL; bit stream)
         || 
         \/ 
       U-BOOT 
     (System V)
         || 
         \/ 
     Linux KERNEL 
    (Kernel Image)
         || 
         \/  
Device tree image here?
         || 
         \/ 
 Linux Root File System
(Root File System Image)
         || 
         \/ 
  Linux KERNEL Drivers 
         || 
         \/ 
 User Level Applications

• FSBL - First Stage Boot Loader.

• Booting options:
  • over JTAG (slow)
  • from an SD Card (faster that JTAG)
  • over a network (PXE; fastest)

JTAG Booting:

SD Card Booting:

• Create BOOT.bin file containing:
  • FSBL Boot Loader.
  • PL Bitstream (can be excluded from BOOT.bin to program the PL after the PS is booted).
  • U-Boot.
  • Device Tree image.
  • KERNEL image.
  • ROOT File System.

Booting from TFTP server over Ethernet port: