core0 local reset behavior

Are you sure you are doing local reset seems like it is a system reset. Also i beleive you have 3 seperate threads. Can we just follow up on one and if you can summarize in one thread that will be great.

Thanks,

Arun.

Also please let me know what prcess you are usin to trigger the reset through PCIe.

thanks,

arun.

Sorry about the multiple threads.  I'll stick to this one from now on.  As mentioned on the other thread, I believe that I am doing a local reset, however, since I have not set DSP_BOOT_ADDRx register, the register still contains the boot-rom entry address.  

To trigger the reset through PCIe, I do the following (pseudo-code):

#define PSC_REGISTERS 0x02350000
#define MDCTL_CORE0_OFFSET 0xA3C
#define MDCTL_LRST_BITMASK 0x00000100

reset_core(int core_num) {

   reg_addr = PSC_REGISTERS + MDCTL_CORE0_OFFSET + (0x4 * core_num);

   reg = readRegister(reg_addr);

   writeRegister(reg_addr, reg & ~MDCTL_LRST_BITMASK);

   msleep(1);

   writeRegister(reg_addr, reg | MDCTL_LRST_BITMASK);

}

so basically asserting the local reset bit in the core's MDCTL register, waiting a millisecond, then de-asserting the local reset bit.  Is there anything else I should be doing?

Hi Arun,

So now that I know about the role of the DSP_BOOT_ADDRx registers,  I have another question:

What is the relationship between the DSP_BOOT_ADDRx register and the BOOT MAGIC address (0x87fffc)?  What I mean is, if you take a look at the pcie bootloader 'hello world' example ( at mcsdk_2_00_07_19/tools/boot_loader/examples/pcie/pcieboot_helloworld/src/pcieboot_helloworld.c ),

I believe that it starts cores 1-7 executing by writing to the BOOT MAGIC address, and then triggering an inter-core interrupt via writing to IPCGR(x).  Receiving this interrupt somehow causes the core which was executing an IDLE instruction to examine the BOOT MAGIC address and then start executing from that entry point.  It seems like the code could almost equivalently set DSP_BOOT_ADDRx, and then issued a local reset.  

Could you explain why there are these two mechanisms, and when you would use one vs the other?

Thanks,

Joel

Excellent.  Thanks Arun!