Thanks Victor! This doesn't bode well.
I'm trying to debug a Chrome on armv8 build. Chrome loaded into gdb with symbols is well over 1 Gig of memory. With everything else running (as in my X env) things die pretty early due to lack of RAM to allocate. Given this is all in the sim, I just don't see adding swap storage as a viable option. What would life be if we didn't have to face fun little things like this ? :-) On Thu, Feb 6, 2014 at 5:57 PM, Victor Kamensky <victor.kamen...@linaro.org> wrote: > Interesting question. > > I think on model side it is controlled by 'bp.dram_size' > parameter (set it with -C option): > > [kamensky@kamensky-w530 fastmodels]$ > ./FVP_Base_AEMv8A-AEMv8A/models/Linux64_GCC-4.1/FVP_Base_AEMv8A-AEMv8A > --list-params | grep dram_size > bp.dram_size=0x4 # (int , > init-time) default = '0x4' : Size of main memory in gigabytes (2, 4 > or 8) : [0x2..0x8] > > However when I tried it, it did not have any > effect, and even if list-params help claims that default > is 4Gb, my Linux kernel sees only 2Gb. > > I think the next issue is some setting in uefi > loader: uefi creates memory regions list that is > passed to the kernel. I see in uefi: > > ./ArmPlatformPkg/ArmVExpressPkg/ArmVExpress-FVP-AArch64.dsc > > # System Memory (2GB) > gArmTokenSpaceGuid.PcdSystemMemoryBase|0x80000000 > gArmTokenSpaceGuid.PcdSystemMemorySize|0x80000000 > > and I cannot set it much bigger because PcdSystemMemorySize > is defined as UINT32 in ./ArmPkg/ArmPkg.dec like this: > > # System Memory (DRAM): These PCDs define the region of in-built system > memory > # Some platforms can get DRAM extensions, these additional regions > will be declared > # to UEFI by ArmPLatformPlib > gArmTokenSpaceGuid.PcdSystemMemoryBase|0|UINT32|0x00000029 > gArmTokenSpaceGuid.PcdSystemMemorySize|0|UINT32|0x0000002A > > At this point I don't see where/how to change ArmPLatformPlib get > more memory available to Linux. > > Thanks, > Victor > > On 6 February 2014 13:35, Tom Gall <tom.g...@linaro.org> wrote: >> Is there a way to set how much memory an armv8 box will get when >> running in the model? >> >> I'll really like to avoid setting up swap :-) >> >> Thanks! >> >> -- >> Regards, >> Tom >> >> "Where's the kaboom!? There was supposed to be an earth-shattering >> kaboom!" Marvin Martian >> Tech Lead, Graphics Working Group | Linaro.org │ Open source software >> for ARM SoCs >> w) tom.gall att linaro.org >> h) tom_gall att mac.com >> >> _______________________________________________ >> linaro-dev mailing list >> linaro-dev@lists.linaro.org >> http://lists.linaro.org/mailman/listinfo/linaro-dev -- Regards, Tom "Where's the kaboom!? There was supposed to be an earth-shattering kaboom!" Marvin Martian Tech Lead, Graphics Working Group | Linaro.org │ Open source software for ARM SoCs w) tom.gall att linaro.org h) tom_gall att mac.com _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
