diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/cputable.c | 43 | ||||
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 110 | ||||
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_32.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/setup.c | 2 | ||||
| -rw-r--r-- | arch/ppc/kernel/setup.c | 2 |
7 files changed, 119 insertions, 45 deletions
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 992121b2d26..911ac442f44 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -277,10 +277,45 @@ static struct cpu_spec cpu_specs[] = { .oprofile_mmcra_sipr = MMCRA_SIPR, .platform = "power5+", }, + { /* POWER6 in P5+ mode; 2.04-compliant processor */ + .pvr_mask = 0xffffffff, + .pvr_value = 0x0f000001, + .cpu_name = "POWER5+", + .cpu_features = CPU_FTRS_POWER5, + .cpu_user_features = COMMON_USER_POWER5_PLUS, + .icache_bsize = 128, + .dcache_bsize = 128, + .num_pmcs = 6, + .oprofile_cpu_type = "ppc64/power6", + .oprofile_type = PPC_OPROFILE_POWER4, + .oprofile_mmcra_sihv = POWER6_MMCRA_SIHV, + .oprofile_mmcra_sipr = POWER6_MMCRA_SIPR, + .oprofile_mmcra_clear = POWER6_MMCRA_THRM | + POWER6_MMCRA_OTHER, + .platform = "power5+", + }, { /* Power6 */ .pvr_mask = 0xffff0000, .pvr_value = 0x003e0000, - .cpu_name = "POWER6", + .cpu_name = "POWER6 (raw)", + .cpu_features = CPU_FTRS_POWER6, + .cpu_user_features = COMMON_USER_POWER6 | + PPC_FEATURE_POWER6_EXT, + .icache_bsize = 128, + .dcache_bsize = 128, + .num_pmcs = 6, + .oprofile_cpu_type = "ppc64/power6", + .oprofile_type = PPC_OPROFILE_POWER4, + .oprofile_mmcra_sihv = POWER6_MMCRA_SIHV, + .oprofile_mmcra_sipr = POWER6_MMCRA_SIPR, + .oprofile_mmcra_clear = POWER6_MMCRA_THRM | + POWER6_MMCRA_OTHER, + .platform = "power6x", + }, + { /* 2.05-compliant processor, i.e. Power6 "architected" mode */ + .pvr_mask = 0xffffffff, + .pvr_value = 0x0f000002, + .cpu_name = "POWER6 (architected)", .cpu_features = CPU_FTRS_POWER6, .cpu_user_features = COMMON_USER_POWER6, .icache_bsize = 128, @@ -1173,19 +1208,15 @@ static struct cpu_spec cpu_specs[] = { #endif /* CONFIG_PPC32 */ }; -struct cpu_spec *identify_cpu(unsigned long offset) +struct cpu_spec *identify_cpu(unsigned long offset, unsigned int pvr) { struct cpu_spec *s = cpu_specs; struct cpu_spec **cur = &cur_cpu_spec; - unsigned int pvr = mfspr(SPRN_PVR); int i; s = PTRRELOC(s); cur = PTRRELOC(cur); - if (*cur != NULL) - return PTRRELOC(*cur); - for (i = 0; i < ARRAY_SIZE(cpu_specs); i++,s++) if ((pvr & s->pvr_mask) == s->pvr_value) { *cur = cpu_specs + i; diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 16d29d16b96..c18dbe77fdc 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -538,35 +538,31 @@ static struct ibm_pa_feature { {CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0}, }; -static void __init check_cpu_pa_features(unsigned long node) +static void __init scan_features(unsigned long node, unsigned char *ftrs, + unsigned long tablelen, + struct ibm_pa_feature *fp, + unsigned long ft_size) { - unsigned char *pa_ftrs; - unsigned long len, tablelen, i, bit; - - pa_ftrs = of_get_flat_dt_prop(node, "ibm,pa-features", &tablelen); - if (pa_ftrs == NULL) - return; + unsigned long i, len, bit; /* find descriptor with type == 0 */ for (;;) { if (tablelen < 3) return; - len = 2 + pa_ftrs[0]; + len = 2 + ftrs[0]; if (tablelen < len) return; /* descriptor 0 not found */ - if (pa_ftrs[1] == 0) + if (ftrs[1] == 0) break; tablelen -= len; - pa_ftrs += len; + ftrs += len; } /* loop over bits we know about */ - for (i = 0; i < ARRAY_SIZE(ibm_pa_features); ++i) { - struct ibm_pa_feature *fp = &ibm_pa_features[i]; - - if (fp->pabyte >= pa_ftrs[0]) + for (i = 0; i < ft_size; ++i, ++fp) { + if (fp->pabyte >= ftrs[0]) continue; - bit = (pa_ftrs[2 + fp->pabyte] >> (7 - fp->pabit)) & 1; + bit = (ftrs[2 + fp->pabyte] >> (7 - fp->pabit)) & 1; if (bit ^ fp->invert) { cur_cpu_spec->cpu_features |= fp->cpu_features; cur_cpu_spec->cpu_user_features |= fp->cpu_user_ftrs; @@ -577,16 +573,59 @@ static void __init check_cpu_pa_features(unsigned long node) } } +static void __init check_cpu_pa_features(unsigned long node) +{ + unsigned char *pa_ftrs; + unsigned long tablelen; + + pa_ftrs = of_get_flat_dt_prop(node, "ibm,pa-features", &tablelen); + if (pa_ftrs == NULL) + return; + + scan_features(node, pa_ftrs, tablelen, + ibm_pa_features, ARRAY_SIZE(ibm_pa_features)); +} + +static struct feature_property { + const char *name; + u32 min_value; + unsigned long cpu_feature; + unsigned long cpu_user_ftr; +} feature_properties[] __initdata = { +#ifdef CONFIG_ALTIVEC + {"altivec", 0, CPU_FTR_ALTIVEC, PPC_FEATURE_HAS_ALTIVEC}, + {"ibm,vmx", 1, CPU_FTR_ALTIVEC, PPC_FEATURE_HAS_ALTIVEC}, +#endif /* CONFIG_ALTIVEC */ +#ifdef CONFIG_PPC64 + {"ibm,dfp", 1, 0, PPC_FEATURE_HAS_DFP}, + {"ibm,purr", 1, CPU_FTR_PURR, 0}, + {"ibm,spurr", 1, CPU_FTR_SPURR, 0}, +#endif /* CONFIG_PPC64 */ +}; + +static void __init check_cpu_feature_properties(unsigned long node) +{ + unsigned long i; + struct feature_property *fp = feature_properties; + const u32 *prop; + + for (i = 0; i < ARRAY_SIZE(feature_properties); ++i, ++fp) { + prop = of_get_flat_dt_prop(node, fp->name, NULL); + if (prop && *prop >= fp->min_value) { + cur_cpu_spec->cpu_features |= fp->cpu_feature; + cur_cpu_spec->cpu_user_features |= fp->cpu_user_ftr; + } + } +} + static int __init early_init_dt_scan_cpus(unsigned long node, const char *uname, int depth, void *data) { static int logical_cpuid = 0; char *type = of_get_flat_dt_prop(node, "device_type", NULL); -#ifdef CONFIG_ALTIVEC - u32 *prop; -#endif - u32 *intserv; + const u32 *prop; + const u32 *intserv; int i, nthreads; unsigned long len; int found = 0; @@ -643,24 +682,27 @@ static int __init early_init_dt_scan_cpus(unsigned long node, intserv[i]); boot_cpuid = logical_cpuid; set_hard_smp_processor_id(boot_cpuid, intserv[i]); - } -#ifdef CONFIG_ALTIVEC - /* Check if we have a VMX and eventually update CPU features */ - prop = (u32 *)of_get_flat_dt_prop(node, "ibm,vmx", NULL); - if (prop && (*prop) > 0) { - cur_cpu_spec->cpu_features |= CPU_FTR_ALTIVEC; - cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC; - } - - /* Same goes for Apple's "altivec" property */ - prop = (u32 *)of_get_flat_dt_prop(node, "altivec", NULL); - if (prop) { - cur_cpu_spec->cpu_features |= CPU_FTR_ALTIVEC; - cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC; + /* + * PAPR defines "logical" PVR values for cpus that + * meet various levels of the architecture: + * 0x0f000001 Architecture version 2.04 + * 0x0f000002 Architecture version 2.05 + * If the cpu-version property in the cpu node contains + * such a value, we call identify_cpu again with the + * logical PVR value in order to use the cpu feature + * bits appropriate for the architecture level. + * + * A POWER6 partition in "POWER6 architected" mode + * uses the 0x0f000002 PVR value; in POWER5+ mode + * it uses 0x0f000001. + */ + prop = of_get_flat_dt_prop(node, "cpu-version", NULL); + if (prop && (*prop & 0xff000000) == 0x0f000000) + identify_cpu(0, *prop); } -#endif /* CONFIG_ALTIVEC */ + check_cpu_feature_properties(node); check_cpu_pa_features(node); #ifdef CONFIG_PPC_PSERIES diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 8671eb634a9..396109a537c 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -627,6 +627,7 @@ static void __init early_cmdline_parse(void) /* Option vector 3: processor options supported */ #define OV3_FP 0x80 /* floating point */ #define OV3_VMX 0x40 /* VMX/Altivec */ +#define OV3_DFP 0x20 /* decimal FP */ /* Option vector 5: PAPR/OF options supported */ #define OV5_LPAR 0x80 /* logical partitioning supported */ @@ -668,7 +669,7 @@ static unsigned char ibm_architecture_vec[] = { /* option vector 3: processor options supported */ 3 - 2, /* length */ 0, /* don't ignore, don't halt */ - OV3_FP | OV3_VMX, + OV3_FP | OV3_VMX | OV3_DFP, /* option vector 4: IBM PAPR implementation */ 2 - 2, /* length */ diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 04df53a3c86..61c65d19ef0 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -97,7 +97,7 @@ unsigned long __init early_init(unsigned long dt_ptr) * Identify the CPU type and fix up code sections * that depend on which cpu we have. */ - spec = identify_cpu(offset); + spec = identify_cpu(offset, mfspr(SPRN_PVR)); do_feature_fixups(spec->cpu_features, PTRRELOC(&__start___ftr_fixup), diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index f602a53b1b7..3733de30e84 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -171,7 +171,7 @@ void __init setup_paca(int cpu) void __init early_setup(unsigned long dt_ptr) { /* Identify CPU type */ - identify_cpu(0); + identify_cpu(0, mfspr(SPRN_PVR)); /* Assume we're on cpu 0 for now. Don't write to the paca yet! */ setup_paca(0); diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index 0f39bdbbf91..1796644ec7d 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -677,7 +677,7 @@ void * __init iSeries_early_setup(void) /* Identify CPU type. This is done again by the common code later * on but calling this function multiple times is fine. */ - identify_cpu(0); + identify_cpu(0, mfspr(SPRN_PVR)); powerpc_firmware_features |= FW_FEATURE_ISERIES; powerpc_firmware_features |= FW_FEATURE_LPAR; diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c index 27faeca2c7a..3c506af1988 100644 --- a/arch/ppc/kernel/setup.c +++ b/arch/ppc/kernel/setup.c @@ -313,7 +313,7 @@ early_init(int r3, int r4, int r5) * Identify the CPU type and fix up code sections * that depend on which cpu we have. */ - spec = identify_cpu(offset); + spec = identify_cpu(offset, mfspr(SPRN_PVR)); do_feature_fixups(spec->cpu_features, PTRRELOC(&__start___ftr_fixup), PTRRELOC(&__stop___ftr_fixup)); |