Hi Bin 2018-04-06 10:30 GMT+02:00 Christian Gmeiner <christian.gmei...@gmail.com>: > Hi Bin > > 2018-04-06 9:47 GMT+02:00 Bin Meng <bmeng...@gmail.com>: >> Hi Christian, >> >> On Fri, Apr 6, 2018 at 2:55 PM, Christian Gmeiner >> <christian.gmei...@gmail.com> wrote: >>> Hi >>> >>> I tried my luck on the u-boot irc channel but nobody cared so I am >>> asking this here again. >>> Does cpu_get_count(..) return the number of physical CPUs or the >>> number of logical CPUs? >>> >>> I am currently preparing a patch set which adds >>> arch/x86/cpu/queensbay/cpu.c and there I need >>> to specify a struct cpu_ops with a function called get_count(). But >>> what must I return (physical vs. logical CPU count)? >>> >> >> It's logical CPUs, say you have one physical CPU, each with >> dual-threads, so get_count() returns 2. >> > > Good to know. I am looking into an issue where vxworks 7 intel gen is not able > to detect the correct amount of physical and logical CPUs (on a blob > UEFI-Bios). > I compared the new platform with an older queensbay based one the there are > some > discrepancies. As vx7 makes use of a handful of BIOS tables I thought I start > at > the root (get_count()) and move up. So as a result of this that means that the > MP table has one "Processor Entry" per logical CPU - or? I tired to get that > information for the spec but failed. > >> But Intel CrownBay already supports SMP in U-Boot. What patch are you >> working on? > > I am out of office today and do not have access to my wip git rep :( > But I needed > to set some speed frequency registers.. but can tell you more on Monday. >
Okay.. yeah I need to configure speed: https://hastebin.com/toqihobali.cpp So the end result is to get all BIOS tables standard conform and vx7 should be happy - I hope. -- greets -- Christian Gmeiner, MSc https://christian-gmeiner.info _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
