diff options
Diffstat (limited to 'arch/powerpc/kernel/prom.c')
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 64 |
1 files changed, 34 insertions, 30 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index e74fa12afc8..48aeb55faae 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -68,6 +68,7 @@ int __initdata iommu_force_on; unsigned long tce_alloc_start, tce_alloc_end; u64 ppc64_rma_size; #endif +static phys_addr_t first_memblock_size; static int __init early_parse_mem(char *p) { @@ -123,18 +124,19 @@ static void __init move_device_tree(void) */ static struct ibm_pa_feature { unsigned long cpu_features; /* CPU_FTR_xxx bit */ + unsigned long mmu_features; /* MMU_FTR_xxx bit */ unsigned int cpu_user_ftrs; /* PPC_FEATURE_xxx bit */ unsigned char pabyte; /* byte number in ibm,pa-features */ unsigned char pabit; /* bit number (big-endian) */ unsigned char invert; /* if 1, pa bit set => clear feature */ } ibm_pa_features[] __initdata = { - {0, PPC_FEATURE_HAS_MMU, 0, 0, 0}, - {0, PPC_FEATURE_HAS_FPU, 0, 1, 0}, - {CPU_FTR_SLB, 0, 0, 2, 0}, - {CPU_FTR_CTRL, 0, 0, 3, 0}, - {CPU_FTR_NOEXECUTE, 0, 0, 6, 0}, - {CPU_FTR_NODSISRALIGN, 0, 1, 1, 1}, - {CPU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0}, + {0, 0, PPC_FEATURE_HAS_MMU, 0, 0, 0}, + {0, 0, PPC_FEATURE_HAS_FPU, 0, 1, 0}, + {0, MMU_FTR_SLB, 0, 0, 2, 0}, + {CPU_FTR_CTRL, 0, 0, 0, 3, 0}, + {CPU_FTR_NOEXECUTE, 0, 0, 0, 6, 0}, + {CPU_FTR_NODSISRALIGN, 0, 0, 1, 1, 1}, + {0, MMU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0}, {CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0}, }; @@ -166,9 +168,11 @@ static void __init scan_features(unsigned long node, unsigned char *ftrs, if (bit ^ fp->invert) { cur_cpu_spec->cpu_features |= fp->cpu_features; cur_cpu_spec->cpu_user_features |= fp->cpu_user_ftrs; + cur_cpu_spec->mmu_features |= fp->mmu_features; } else { cur_cpu_spec->cpu_features &= ~fp->cpu_features; cur_cpu_spec->cpu_user_features &= ~fp->cpu_user_ftrs; + cur_cpu_spec->mmu_features &= ~fp->mmu_features; } } } @@ -268,13 +272,13 @@ 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); const u32 *prop; const u32 *intserv; int i, nthreads; unsigned long len; - int found = 0; + int found = -1; + int found_thread = 0; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) @@ -298,11 +302,10 @@ static int __init early_init_dt_scan_cpus(unsigned long node, * version 2 of the kexec param format adds the phys cpuid of * booted proc. */ - if (initial_boot_params && initial_boot_params->version >= 2) { - if (intserv[i] == - initial_boot_params->boot_cpuid_phys) { - found = 1; - break; + if (initial_boot_params->version >= 2) { + if (intserv[i] == initial_boot_params->boot_cpuid_phys) { + found = boot_cpu_count; + found_thread = i; } } else { /* @@ -311,23 +314,20 @@ static int __init early_init_dt_scan_cpus(unsigned long node, * off secondary threads. */ if (of_get_flat_dt_prop(node, - "linux,boot-cpu", NULL) != NULL) { - found = 1; - break; - } + "linux,boot-cpu", NULL) != NULL) + found = boot_cpu_count; } - #ifdef CONFIG_SMP /* logical cpu id is always 0 on UP kernels */ - logical_cpuid++; + boot_cpu_count++; #endif } - if (found) { - DBG("boot cpu: logical %d physical %d\n", logical_cpuid, - intserv[i]); - boot_cpuid = logical_cpuid; - set_hard_smp_processor_id(boot_cpuid, intserv[i]); + if (found >= 0) { + DBG("boot cpu: logical %d physical %d\n", found, + intserv[found_thread]); + boot_cpuid = found; + set_hard_smp_processor_id(found, intserv[found_thread]); /* * PAPR defines "logical" PVR values for cpus that @@ -509,11 +509,14 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size) size = 0x80000000ul - base; } #endif - - /* First MEMBLOCK added, do some special initializations */ - if (memstart_addr == ~(phys_addr_t)0) - setup_initial_memory_limit(base, size); - memstart_addr = min((u64)memstart_addr, base); + /* Keep track of the beginning of memory -and- the size of + * the very first block in the device-tree as it represents + * the RMA on ppc64 server + */ + if (base < memstart_addr) { + memstart_addr = base; + first_memblock_size = size; + } /* Add the chunk to the MEMBLOCK list */ memblock_add(base, size); @@ -698,6 +701,7 @@ void __init early_init_devtree(void *params) of_scan_flat_dt(early_init_dt_scan_root, NULL); of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL); + setup_initial_memory_limit(memstart_addr, first_memblock_size); /* Save command line for /proc/cmdline and then parse parameters */ strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE); |