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powerpc/476: define specific cpu table entry DD2 core 

The DD2 core still has some unstability.  Define CPU_FTR_476_DD2 to
enable workarounds in later patches.

This is based on an earlier, unreleased patch for DD1 by Ben Herrenschmidt.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This commit is contained in:
Dave Kleikamp 2011-01-26 06:17:58 +00:00 committed by Josh Boyer
parent 8960f7ff50
commit c48d0dbaac
2 changed files with 20 additions and 5 deletions
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3
arch/powerpc/include/asm/cputable.h
View File

@ -154,6 +154,7 @@ extern const char *powerpc_base_platform;
#define CPU_FTR_NAP_DISABLE_L2_PR ASM_CONST(0x0000000000002000)
#define CPU_FTR_DUAL_PLL_750FX ASM_CONST(0x0000000000004000)
#define CPU_FTR_NO_DPM ASM_CONST(0x0000000000008000)
#define CPU_FTR_476_DD2 ASM_CONST(0x0000000000010000)
#define CPU_FTR_NEED_COHERENT ASM_CONST(0x0000000000020000)
#define CPU_FTR_NO_BTIC ASM_CONST(0x0000000000040000)
#define CPU_FTR_NODSISRALIGN ASM_CONST(0x0000000000100000)
@ -465,7 +466,7 @@ enum {
CPU_FTRS_44X | CPU_FTRS_440x6 |
#endif
#ifdef CONFIG_PPC_47x
CPU_FTRS_47X |
CPU_FTRS_47X | CPU_FTR_476_DD2 |
#endif
#ifdef CONFIG_E200
CPU_FTRS_E200 |

22
arch/powerpc/kernel/cputable.c
View File

@ -1834,11 +1834,11 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check = machine_check_440A,
.platform = "ppc440",
},
{ /* 476 core */
.pvr_mask = 0xffff0000,
.pvr_value = 0x11a50000,
{ /* 476 DD2 core */
.pvr_mask = 0xffffffff,
.pvr_value = 0x11a52080,
.cpu_name = "476",
.cpu_features = CPU_FTRS_47X,
.cpu_features = CPU_FTRS_47X | CPU_FTR_476_DD2,
.cpu_user_features = COMMON_USER_BOOKE |
PPC_FEATURE_HAS_FPU,
.mmu_features = MMU_FTR_TYPE_47x |
@ -1862,6 +1862,20 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check = machine_check_47x,
.platform = "ppc470",
},
{ /* 476 others */
.pvr_mask = 0xffff0000,
.pvr_value = 0x11a50000,
.cpu_name = "476",
.cpu_features = CPU_FTRS_47X,
.cpu_user_features = COMMON_USER_BOOKE |
PPC_FEATURE_HAS_FPU,
.mmu_features = MMU_FTR_TYPE_47x |
MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL,
.icache_bsize = 32,
.dcache_bsize = 128,
.machine_check = machine_check_47x,
.platform = "ppc470",
},
{ /* default match */
.pvr_mask = 0x00000000,
.pvr_value = 0x00000000,