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powerpc/4xx: Extended DCR support v2

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This adds supports to the "extended" DCR addressing via the indirect
mfdcrx/mtdcrx instructions supported by some 4xx cores (440H6 and
later).

I enabled the feature for now only on AMCC 460 chips.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2008-12-18 19:13:22 +00:00
committed by Paul Mackerras
parent fecba96268
commit 6d2170be45
4 changed files with 65 additions and 17 deletions
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4
arch/powerpc/kernel/cputable.c
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@@ -1509,7 +1509,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
.pvr_mask = 0xffff0002,
.pvr_value = 0x13020002,
.cpu_name = "460EX",
.cpu_features = CPU_FTRS_44X,
.cpu_features = CPU_FTRS_440x6,
.cpu_user_features = COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
.icache_bsize = 32,
.dcache_bsize = 32,
@@ -1521,7 +1521,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
.pvr_mask = 0xffff0002,
.pvr_value = 0x13020000,
.cpu_name = "460GT",
.cpu_features = CPU_FTRS_44X,
.cpu_features = CPU_FTRS_440x6,
.cpu_user_features = COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
.icache_bsize = 32,
.dcache_bsize = 32,