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From: | Mark Cave-Ayland |
Subject: | Re: [Qemu-devel] [Qemu-ppc] Is FW_CFG_PPC_CPUFREQ deprecated? |
Date: | Sat, 20 Apr 2013 11:50:00 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:10.0.12) Gecko/20130116 Icedove/10.0.12 |
On 19/04/13 16:31, Alexander Graf wrote:
Hi everyone, Has FW_CFG_PPC_CPUFREQ been removed from QEMU for some reason? I noticed that the value always comes back as 0 in OpenBIOS, and it looks as if the FW_CFG_PPC_CPUFREQ constant (FW_CFG_ARCH_LOCAL + 0x4) has been removed from hw/ppc.h?In fact, it simply never got introduced :)
Yes - I see now from the archives that there was disagreement as to how to obtain the CPU frequency to pass to OpenBIOS, and while the FW_CFG_PPC_CPUFREQ value was removed from the final QEMU commit, it still remains in the related OpenBIOS commit.
Well at least it explains why when booting an PPC OS in QEMU/OpenBIOS all the CPU speeds appear as 0MHz ;)
ATB, Mark.
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