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Altera_Forum's avatar
Altera_Forum
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10 years ago

CPU1: failed to come online

Hi,

I'm faced with Soc bootloading issue when generating the preloader:

Context:

- Tools: QUARTUS_VERSION 15.0.0

- HW: Cyclone V - 5CSXFC6D6F31C6

- SW: boot from MMC

Before:

- A design works fine with two cores activated.

Action:

- From the working design, Preloader is been re-generated using bsp-editor.

Now:

- cpu0 activated, cpu1 failed to come online.

Question: how to activate cpu1 ?

7 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    Hi, did you added in the cpu start address from the DTS generation?

  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    --- Quote Start ---

    Hi, did you added in the cpu start address from the DTS generation?

    --- Quote End ---

    in "soc_system.dts" file:

    hps_sysmgr: sysmgr@0xffd08000 {

    compatible = "altr,sys-mgr-14.0", "altr,sys-mgr", "syscon";

    reg = < 0xFFD08000 0x00004000 >;

    cpu1-start-addr = < 4291854532 >; /* embeddedsw.dts.params.cpu1-start-addr type NUMBER */

    }; //end sysmgr@0xffd08000 (hps_sysmgr)

    dtc file has not replaced into mmc: it is the same before and after preloader re-generation.
  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    DeviceTree file (dtc) and kernel image (zImage) have not been changed. The only change made on the SD card is preloader.

  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    Preloader will leave cpu1 in default state / power on state which is in reset.

    cpu1 will be brought out by Linux from Linux.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    That's probably right. But I don't manage to understand why regenerating preloader prevents linux to brought out cpu1.

  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    --- Quote Start ---

    DeviceTree file (dtc) and kernel image (zImage) have not been changed. The only change made on the SD card is preloader.

    --- Quote End ---

    hi, to enable the cpu1, you maybe need to enable this in device tree, and not the preloader. Maybe you can explain alittle more what are your ACTIONS did..