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TMS320F28377D: I'm having trouble understanding the device boot sequence for CPU2.

Andrea Cortiana
Prodigy 10 points

Part Number: TMS320F28377D

Hello,

I don't fully understand how the flash boot sequence works for starting CPU2.

When I manually launch both CPU1 and CPU2 in sequence from CCS, the system functions correctly. However, upon a board reset and automatic boot, only CPU1 boots successfully. CPU2 appears to remain in a wait state.

In CPU1 I give the following command after all initializations:

    Device_bootCPU2(C1C2_BROM_BOOTMODE_BOOT_FROM_FLASH);
 
In CPU2 I do the following:

    IpcRegs.IPCBOOTSTS = C2_BOOTROM_BOOTSTS_SYSTEM_READY;

    WaitForIpcFlag(31);

    AckIpcFlag(0);
    AckIpcFlag(31);

    IpcRegs.IPCBOOTSTS = C2_BOOTROM_BOOTSTS_C2TOC1_IGNORE;
I've reviewed similar threads on the E2E Forum, but I'm still unclear on the correct process to follow.
 
Thanks.
  • 0
    Prodigy 10 points

    I've resolved the issue.
    CPU2 was actually starting, but it didn't get for some reason the IPC Flag 31 in Stand Alone mode, so it was waiting in WaitForIpcFlag(31);
     

        Device_bootCPU2(C1C2_BROM_BOOTMODE_BOOT_FROM_FLASH);
        DELAY_US(10000);
        SendIpcFlag(31);
    This worked for me.