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CPU1: failed to come online

Altera_Forum
Honored Contributor II
4,346 Views

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 ?
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Altera_Forum
Honored Contributor II
1,515 Views

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

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Altera_Forum
Honored Contributor II
1,515 Views

 

--- 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.
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Altera_Forum
Honored Contributor II
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check out for the key word "cpu1", be sure not to change the kernel version(in case if you rebuild your self). 

 

http://rocketboards.org/foswiki/view/documentation/gsrdv151devicetreegenerator
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Altera_Forum
Honored Contributor II
1,515 Views

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

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Altera_Forum
Honored Contributor II
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Preloader will leave cpu1 in default state / power on state which is in reset.  

cpu1 will be brought out by Linux from Linux.
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Altera_Forum
Honored Contributor II
1,515 Views

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

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Altera_Forum
Honored Contributor II
1,515 Views

 

--- 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..
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