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CAlex's avatar
CAlex
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2 years ago

How to start and run a baremetal aplication without the debug

Hi, I've managed to debug my code and now I want to test it on FPGA side. The issue is my board (cyclone V soc dev kit) has only one uart to Jtag yet I need to monitor the FPGA and HPS at the same ...
Jeet14's avatar
Jeet14
Icon for Frequent Contributor rankFrequent Contributor
2 years ago

Hi,


Yes, preloader-mkimage.bin is generated from u-boot-spl file.

For .axf to .bin you can use mkimage utility or

In eclipse, the post-build steps (under Build Steps tab in the C/C++ Build Settings):

fromelf --bincombined ${ProjName}.axf --output=${ProjName}.bin


Please find below link to compile the SPL and preloader for baremetal application.

https://www.rocketboards.org/foswiki/Documentation/PreloaderUbootCustomization131


We also have AN709, where it is explain for booting from SD card-Custom partition & FAT partition.


Let me know if you have any query on this.


Regards

Tiwari



CAlex's avatar
CAlex
Icon for Contributor rankContributor
2 years ago

Hi,

Sorry I didnt explain my confusion clearly,

I'm now using SOC EDS 20.1 and cycloneV soc, so BSP-editor is not working any more.

Your resource is for 13.1 or earilier if Im correct.

according to :

Building Bootloader for Cyclone V and Arria 10 | Documentation | RocketBoards.org

"

For Cyclone V SoC and Arria V SoC, the handoff information created by Quartus compilation comes in several formats: C source code, XML and binary files. Bsp-editor takes this information and turns it into source code which is used to build U-Boot. For older versions of SoC EDS, the user could set various U-Boot parameters in bsp-editor. For the current version of SoC EDS, they have no effect.

"

So I have to set the Uboot myself.

According to AN709, which is 1.5.2. Booting from SD/MMC – Custom Partition (intel.com) I posted in my updates.

"

  1. Make sure to select the following options:
    • Check the option spl.boot.BOOT_FROM_SDMMC
    • Uncheck the other boot options (spl.boot.BOOT_FROM_RAM, spl.boot.BOOT_FROM_QSPI, spl.boot.BOOT_FROM_NAND)
      Note: spl.boot.SDMMC_NEXT_BOOT_IMAGE = 0x40000. This is the location where the bare-metal application image is stored.
    • Check the option spl.boot.SDRAM_SCRUBBING and spl.boot.SDRAM_SCRUB_REMAIN_REGION. This zeroes out the SDRAM, preventing any ECC errors to occur during bare-metal program execution.
    • Uncheck the option spl.boot.WATCHDOG_ENABLE. This is because we are not kicking the watchdog in our bare-metal application.
  2. Compile the Preloader. This creates the file preloader-mkpimage.bin.

"

I need to know how to set these settings in Uboot.

Now I didnt find the location to set:

spl.boot.SDMMC_NEXT_BOOT_IMAGE = 0x40000.

spl.boot.SDRAM_SCRUBBING

spl.boot.SDRAM_SCRUB_REMAIN_REGION

And I didnt know the mkimage -a xxxxx meaning as well.

reguards.