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 -----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