Hi Tom,
On Thu, Jun 11, 2015 at 11:02 PM, Beaman, Thomas Thomas.Beaman@xerox.com wrote:
Hi Simon,
I have enclosed both kernel boot files
Thanks, Tom
Please stop top-posting.
-----Original Message----- From: sjg@google.com [mailto:sjg@google.com] On Behalf Of Simon Glass Sent: Wednesday, June 10, 2015 9:15 PM To: Beaman, Thomas Cc: u-boot@lists.denx.de Subject: Re: MinnowBoard Max uboot
Hi Thomas,
On 10 June 2015 at 12:38, Beaman, Thomas Thomas.Beaman@xerox.com wrote:
Hi Simon,
I have just picked up u-boot-2015.07-rc2 with your support for multiple CPUs on the minnowboard max. I can see using the uboot cpu list command that both CPUs now show up. But the kernel does not see 2 CPUs in /proc/cpuinfo. If I boot the same kernel using an EFI BIOS I do see 2 CPUs in /proc/cpuinfo. Is there some uboot to kernel hand off I do not have configured properly ? I am not sure how the number of CPUs gets transferred from the boot to the kernel.
Thanks for any input you may have. Tom
=> cpu list 0: cpu@0 Intel(R) Atom(TM) CPU E3825 @ 1.33GHz 1: cpu@1 Intel(R) Atom(TM) CPU E3825 @ 1.33GHz
## minnow max when booted from uboot 2015-07.rc2 root@atom_230:~# cat /proc/cpuinfo | grep processor processor : 0
## minnow max when booted from BIOS root@atom_230:~# cat /proc/cpuinfo | grep processor processor : 0 processor : 1
Do you have the output from the kernel boot please?
Regards, Simon
-----Original Message----- From: sjg@google.com [mailto:sjg@google.com] On Behalf Of Simon Glass Sent: Tuesday, March 10, 2015 1:21 PM To: Beaman, Thomas Cc: u-boot@lists.denx.de; Bin Meng; gabriel huau Subject: Re: MinnowBoard Max uboot
Hi Tom,
On 10 March 2015 at 05:24, Beaman, Thomas Thomas.Beaman@xerox.com wrote:
Hi Simon,
Do you know what will be the timeframe of when someone may be able to look at this in more detail. I will be able to help test any updates if needed
I will take a look once I have things lined up for the next release, likely mid April.
Regards, Simon
Thanks, Tom
-----Original Message----- From: sjg@google.com [mailto:sjg@google.com] On Behalf Of Simon Glass Sent: Monday, March 09, 2015 11:49 AM To: Beaman, Thomas Cc: u-boot@lists.denx.de; Bin Meng; gabriel huau Subject: Re: MinnowBoard Max uboot
+Bin and Gabriel
Hi Tom,
On 9 March 2015 at 08:08, Beaman, Thomas Thomas.Beaman@xerox.com wrote:
Hi Simon,
I see you have put support for the MinnowBoard Max in the u-boot mainline. Thanks this is a very useful addition. I have been able to follow your readme and build a working bare metal uboot. Using the built uboot I can load and bring up a Linux Kernel.
What I noticed from the running kernel is that only one of the two cores on the E3825 is running. In the power PC uboots I usually see a section for the multiple cores in the .dts file. My questions is how do I get both CPUs running on this board. Is it a uboot .dts file setup that will enable this, or is something in the kernel start up that does this.
As a test I boot the same kernel using the EFI BIOS on the minnow board and both CPUs are running.
Any suggestions or comments you have would be welcomed.
My guess is that the LAPIC CPU start-up is missing. It isn't 100% clear what the FSP does and does not do, but perhaps it does not do that.
I did make something of a start on this with ivybridge but it isn't complete, and it seems to be needed here.
Regards, Simon
I've checked your kernel log, and it turns out that you did not turn on CONFIG_SFI in your kernel build. Please make sure CONFIG_SFI=y to build the kernel and have a try.
Regards, Bin