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MV's avatar
MV
Icon for Occasional Contributor rankOccasional Contributor
3 years ago
Solved

Verify BSP settings

I am developing a system using Cyclone V under Linux OS. Up to now I was focused on rebuilding of the kernel and device tree. The device tree that is loaded contains the HPS peripherals I am looking...
  • MV's avatar
    MV
    3 years ago

    Got that one resolved!
    I decided to re-build bootloader and tried to follow the GSRD v14.0 - Generating and Compiling the Preloader
    When I copied the binary to my uSD card the system didn't boot - likely some of the important details like partition type etc. I went back to my previous scripts that use mainline u-boot (branch v2019.07).
    After some searching how the BSP specific information gets included into the u-boot-with-spl_DE0.sfp u-boot binary I discovered in the u-boot build tree the file

    board/terasic/de0-nano-soc/qts/pinmux_config.h

    I edited desired "...USEFPGA" values to "1"

        abbreviated ...
            1, /* UART1USEFPGA */
	0, /* CAN1USEFPGA */
	0, /* USB1USEFPGA */
	0, /* I2C3USEFPGA */
	1, /* I2C2USEFPGA */
    ...

    rebuilt the u-boot, placed on my uSD card and the previously failing kernel with corresponding drivers and device tree started to work as expected.
    Hoping this may help someone else.
    Martin

tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi Martin


Glad that you able to get the uboot to boot from SD Card.

There is a much easire method of doing it available here in the link below:

https://www.rocketboards.org/foswiki/Documentation/BuildingBootloaderCycloneVAndArria10#Cyclone_V_SoC_45_Boot_from_SD_Card


Regarding the question that you have. Please find my respond below:


Is there a way to verify that the resource (such as "serial1") is actually enabled from within a running OS?

Once booted you could check the device under the "/dev" directory in the Linux OS.


Can one enable a HPS module during run-time or is the bootloader the only place?

The HPS module needs to be enabled during the bootloader.