diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/kexec.h | 5 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/cputable.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/cpu_setup_power.c | 8 | ||||
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 1 |
5 files changed, 27 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/kexec.h b/arch/powerpc/include/asm/book3s/64/kexec.h index d4b9d476ecba..df37a76c1e9f 100644 --- a/arch/powerpc/include/asm/book3s/64/kexec.h +++ b/arch/powerpc/include/asm/book3s/64/kexec.h @@ -21,6 +21,11 @@ static inline void reset_sprs(void) plpar_set_ciabr(0); } + if (cpu_has_feature(CPU_FTR_ARCH_31)) { + mtspr(SPRN_DEXCR, 0); + mtspr(SPRN_HASHKEYR, 0); + } + /* Do we need isync()? We are going via a kexec reset */ isync(); } diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 757dbded11dc..443a9d482b15 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -192,6 +192,7 @@ static inline void cpu_feature_keys_init(void) { } #define CPU_FTR_P9_RADIX_PREFETCH_BUG LONG_ASM_CONST(0x0002000000000000) #define CPU_FTR_ARCH_31 LONG_ASM_CONST(0x0004000000000000) #define CPU_FTR_DAWR1 LONG_ASM_CONST(0x0008000000000000) +#define CPU_FTR_DEXCR_NPHIE LONG_ASM_CONST(0x0010000000000000) #ifndef __ASSEMBLY__ @@ -451,7 +452,8 @@ static inline void cpu_feature_keys_init(void) { } CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \ CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_ARCH_207S | \ CPU_FTR_ARCH_300 | CPU_FTR_ARCH_31 | \ - CPU_FTR_DAWR | CPU_FTR_DAWR1) + CPU_FTR_DAWR | CPU_FTR_DAWR1 | \ + CPU_FTR_DEXCR_NPHIE) #define CPU_FTRS_CELL (CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 6372e5f55ef0..bb0121222ee3 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -382,7 +382,17 @@ #define SPRN_HIOR 0x137 /* 970 Hypervisor interrupt offset */ #define SPRN_RMOR 0x138 /* Real mode offset register */ #define SPRN_HRMOR 0x139 /* Real mode offset register */ +#define SPRN_HDEXCR_RO 0x1C7 /* Hypervisor DEXCR (non-privileged, readonly) */ +#define SPRN_HASHKEYR 0x1D4 /* Non-privileged hashst/hashchk key register */ +#define SPRN_HDEXCR 0x1D7 /* Hypervisor dynamic execution control register */ +#define SPRN_DEXCR_RO 0x32C /* DEXCR (non-privileged, readonly) */ #define SPRN_ASDR 0x330 /* Access segment descriptor register */ +#define SPRN_DEXCR 0x33C /* Dynamic execution control register */ +#define DEXCR_PR_SBHE 0x80000000UL /* 0: Speculative Branch Hint Enable */ +#define DEXCR_PR_IBRTPD 0x10000000UL /* 3: Indirect Branch Recurrent Target Prediction Disable */ +#define DEXCR_PR_SRAPD 0x08000000UL /* 4: Subroutine Return Address Prediction Disable */ +#define DEXCR_PR_NPHIE 0x04000000UL /* 5: Non-Privileged Hash Instruction Enable */ +#define DEXCR_INIT DEXCR_PR_NPHIE /* Fixed DEXCR value to initialise all CPUs with */ #define SPRN_IC 0x350 /* Virtual Instruction Count */ #define SPRN_VTB 0x351 /* Virtual Time Base */ #define SPRN_LDBAR 0x352 /* LD Base Address Register */ diff --git a/arch/powerpc/kernel/cpu_setup_power.c b/arch/powerpc/kernel/cpu_setup_power.c index 097c033668f0..98bd4e6c1770 100644 --- a/arch/powerpc/kernel/cpu_setup_power.c +++ b/arch/powerpc/kernel/cpu_setup_power.c @@ -126,6 +126,12 @@ static void init_PMU_ISA31(void) mtspr(SPRN_MMCR0, MMCR0_FC | MMCR0_PMCCEXT); } +static void init_DEXCR(void) +{ + mtspr(SPRN_DEXCR, DEXCR_INIT); + mtspr(SPRN_HASHKEYR, 0); +} + /* * Note that we can be called twice of pseudo-PVRs. * The parameter offset is not used. @@ -241,6 +247,7 @@ void __setup_cpu_power10(unsigned long offset, struct cpu_spec *t) init_FSCR_power10(); init_PMU(); init_PMU_ISA31(); + init_DEXCR(); if (!init_hvmode_206(t)) return; @@ -263,6 +270,7 @@ void __restore_cpu_power10(void) init_FSCR_power10(); init_PMU(); init_PMU_ISA31(); + init_DEXCR(); msr = mfmsr(); if (!(msr & MSR_HV)) diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 9d9ee4e9e1a1..0b5878c3125b 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -182,6 +182,7 @@ static struct ibm_feature ibm_pa_features[] __initdata = { .cpu_user_ftrs2 = PPC_FEATURE2_HTM_COMP | PPC_FEATURE2_HTM_NOSC_COMP }, { .pabyte = 64, .pabit = 0, .cpu_features = CPU_FTR_DAWR1 }, + { .pabyte = 68, .pabit = 5, .cpu_features = CPU_FTR_DEXCR_NPHIE }, }; /* |