Booting Vxworks Kernel from QSPI

Hello everyone,

I want to boot the Vxworks kernel from QSPI flash. i.e. the initial location of the kernel should be the QSPI while starting the board instead of SD card or Ethernet connection from host. I want to know the configuration I need to do, so Vxworks boot loader can find the kernel inside the QSPI flash and then load it to RAM for execution.

Thank you.

0 Former Member over 8 years ago

Booting from QSPI or SDI is decided by position of MIO pins on the board. I used
'Tutorial 04 FSBL and Boot from QSPI and SD Card' on this page as reference. Maybe it will help you as well.
http://zedboard.org/support/design/4701/76
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0 Former Member over 8 years ago

You may also find XAPP1258 useful. There is a section in here about booting VxWorks from SD or QSPI.
http://www.xilinx.com/support/documentation/application_notes/xapp1258-vxworks-7-bsp.pdf
Ron
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0 Former Member over 8 years ago

Thank you for your response. I already have looked at this tutorial but it doesn't solve my problem.

1) I am already able to make a boot image which consists of FSBL, bitstream file and Vxworks Bootloader and boot the Vxworks through ethernet. The problem is Xilinx/Avnet documents tell you how to configure Vxworks bootloader either to load Vxworks kernel from SD card or through Ethernet from host computer.

2)I am looking for a solution which will help me put not just the boot image but also the Vxworks kernel on the QSPI flash and how to configure Vxworks bootloader to look for the Vxworks kernel in QSPI flash not the SD card or through Ethernet.

I hope this will give you a better idea of what I am looking for.

Thanks,
Ali.
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0 Former Member over 8 years ago

Thanks for you response. I have been through XAPP1258 and like I mentioned in my reply to GK above. These document tell you how to configure Vxworks bootloader either to load Vxworks kernel from SD card or through Ethernet from host computer.

Thanks again,
Ali.

I am looking for a solution which will help me put not just the boot image but also the Vxworks kernel on the QSPI flash and how to configure Vxworks bootloader to look for the Vxworks kernel in QSPI flash not the SD card or through Ethernet.
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0 Former Member over 8 years ago in reply to Former Member

Hi Ali,
I am not sure what secondary BootL you use. But this is how I do it in uboot. You can follow the tutorial to to flask BOOT.bin and kernel image files into SPI flash.
Then in my uboot environment my variables are

###########################################
bootcmd = run sfboot
sfboot = sf probe 0 && sf read ${netstart} 0x520000 0xAE0000 && bootm ${netstart}
netstart = 0x01000000
##########################################

0x520000 is the start of mtd partition where I flashed my (kernel+dtb+rootfs) image. 0xAE0000 is the size of partition. In short, the command is loading whole partition to RAM at netstart address and then uboot starts loading kernel.
Thus everything is inside QSPI flash.
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