From 3d1d662ef423adf6947a37e230f4d7e8ed7c9544 Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Sat, 17 Nov 2007 04:29:56 +1100 Subject: [PATCH] [POWERPC] 4xx: Use virtual PVR value to init FPU on arch/ppc 440EP This fixes arch/ppc 440EP platforms to setup the FPU correctly. A virtual PVR is used, as 440GR platforms share an identical hardware PVR value and do not have an FPU. Signed-off-by: Josh Boyer --- arch/ppc/kernel/setup.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c index aac88c2f3d..5255bd80aa 100644 --- a/arch/ppc/kernel/setup.c +++ b/arch/ppc/kernel/setup.c @@ -312,7 +312,14 @@ early_init(int r3, int r4, int r5) * Identify the CPU type and fix up code sections * that depend on which cpu we have. */ +#if defined(CONFIG_440EP) && defined(CONFIG_PPC_FPU) + /* We pass the virtual PVR here for 440EP as 440EP and 440GR have + * identical PVRs and there is no reliable way to check for the FPU + */ + spec = identify_cpu(offset, (mfspr(SPRN_PVR) | 0x8)); +#else spec = identify_cpu(offset, mfspr(SPRN_PVR)); +#endif do_feature_fixups(spec->cpu_features, PTRRELOC(&__start___ftr_fixup), PTRRELOC(&__stop___ftr_fixup)); -- 2.39.5