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Commit 3d1d662e authored by Josh Boyer's avatar Josh Boyer
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[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: default avatarJosh Boyer <jwboyer@linux.vnet.ibm.com>
parent b8b799a4

arch/ppc/kernel/setup.c

+7 −0
Original line number Diff line number Diff line
@@ -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));