Hi Thomas, On 10 June 2015 at 12:38, Beaman, Thomas <thomas.bea...@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: s...@google.com [mailto:s...@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.bea...@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: s...@google.com [mailto:s...@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.bea...@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 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot