diff options
| -rw-r--r-- | arch/powerpc/include/asm/rtas.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/smp.h | 9 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup-common.c | 173 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup.h | 58 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_32.c | 65 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 175 |
6 files changed, 250 insertions, 233 deletions
diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index fa3e3c4367bd..9c23baa10b81 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -351,7 +351,6 @@ extern bool rtas_indicator_present(int token, int *maxindex); extern int rtas_set_indicator(int indicator, int index, int new_value); extern int rtas_set_indicator_fast(int indicator, int index, int new_value); extern void rtas_progress(char *s, unsigned short hex); -extern void rtas_initialize(void); extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); extern int rtas_online_cpus_mask(cpumask_var_t cpus); @@ -460,9 +459,11 @@ static inline int page_is_rtas_user_buf(unsigned long pfn) /* Not the best place to put pSeries_coalesce_init, will be fixed when we * move some of the rtas suspend-me stuff to pseries */ extern void pSeries_coalesce_init(void); +void rtas_initialize(void); #else static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;} static inline void pSeries_coalesce_init(void) { } +static inline void rtas_initialize(void) { }; #endif extern int call_rtas(const char *, int, int, unsigned long *, ...); diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h index e1afd4c4f695..0d02c11dc331 100644 --- a/arch/powerpc/include/asm/smp.h +++ b/arch/powerpc/include/asm/smp.h @@ -160,9 +160,6 @@ static inline void set_hard_smp_processor_id(int cpu, int phys) { paca[cpu].hw_cpu_id = phys; } - -extern void smp_release_cpus(void); - #else /* 32-bit */ #ifndef CONFIG_SMP @@ -179,6 +176,12 @@ static inline void set_hard_smp_processor_id(int cpu, int phys) #endif /* !CONFIG_SMP */ #endif /* !CONFIG_PPC64 */ +#if defined(CONFIG_PPC64) && (defined(CONFIG_SMP) || defined(CONFIG_KEXEC)) +extern void smp_release_cpus(void); +#else +static inline void smp_release_cpus(void) { }; +#endif + extern int smt_enabled_at_boot; extern void smp_mpic_probe(void); diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index ca9255e3b763..714b4ba7ab86 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -35,6 +35,7 @@ #include <linux/percpu.h> #include <linux/memblock.h> #include <linux/of_platform.h> +#include <linux/hugetlb.h> #include <asm/io.h> #include <asm/paca.h> #include <asm/prom.h> @@ -61,6 +62,12 @@ #include <asm/cputhreads.h> #include <mm/mmu_decl.h> #include <asm/fadump.h> +#include <asm/udbg.h> +#include <asm/hugetlb.h> +#include <asm/livepatch.h> +#include <asm/mmu_context.h> + +#include "setup.h" #ifdef DEBUG #include <asm/udbg.h> @@ -758,3 +765,169 @@ void arch_setup_pdev_archdata(struct platform_device *pdev) pdev->dev.dma_mask = &pdev->archdata.dma_mask; set_dma_ops(&pdev->dev, &dma_direct_ops); } + +static __init void print_system_info(void) +{ + pr_info("-----------------------------------------------------\n"); +#ifdef CONFIG_PPC_STD_MMU_64 + pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size); +#endif +#ifdef CONFIG_PPC_STD_MMU_32 + pr_info("Hash_size = 0x%lx\n", Hash_size); +#endif + pr_info("phys_mem_size = 0x%llx\n", + (unsigned long long)memblock_phys_mem_size()); + + pr_info("dcache_bsize = 0x%x\n", dcache_bsize); + pr_info("icache_bsize = 0x%x\n", icache_bsize); + if (ucache_bsize != 0) + pr_info("ucache_bsize = 0x%x\n", ucache_bsize); + + pr_info("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features); + pr_info(" possible = 0x%016lx\n", + (unsigned long)CPU_FTRS_POSSIBLE); + pr_info(" always = 0x%016lx\n", + (unsigned long)CPU_FTRS_ALWAYS); + pr_info("cpu_user_features = 0x%08x 0x%08x\n", + cur_cpu_spec->cpu_user_features, + cur_cpu_spec->cpu_user_features2); + pr_info("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features); +#ifdef CONFIG_PPC64 + pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features); +#endif + +#ifdef CONFIG_PPC_STD_MMU_64 + if (htab_address) + pr_info("htab_address = 0x%p\n", htab_address); + if (htab_hash_mask) + pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask); +#endif +#ifdef CONFIG_PPC_STD_MMU_32 + if (Hash) + pr_info("Hash = 0x%p\n", Hash); + if (Hash_mask) + pr_info("Hash_mask = 0x%lx\n", Hash_mask); +#endif + + if (PHYSICAL_START > 0) + pr_info("physical_start = 0x%llx\n", + (unsigned long long)PHYSICAL_START); + pr_info("-----------------------------------------------------\n"); +} + +/* + * Called into from start_kernel this initializes memblock, which is used + * to manage page allocation until mem_init is called. + */ +void __init setup_arch(char **cmdline_p) +{ + *cmdline_p = boot_command_line; + + /* Set a half-reasonable default so udelay does something sensible */ + loops_per_jiffy = 500000000 / HZ; + + /* Unflatten the device-tree passed by prom_init or kexec */ + unflatten_device_tree(); + + /* + * Initialize cache line/block info from device-tree (on ppc64) or + * just cputable (on ppc32). + */ + initialize_cache_info(); + + /* Initialize RTAS if available. */ + rtas_initialize(); + + /* Check if we have an initrd provided via the device-tree. */ + check_for_initrd(); + + /* Probe the machine type, establish ppc_md. */ + probe_machine(); + + /* Setup panic notifier if requested by the platform. */ + setup_panic(); + + /* + * Configure ppc_md.power_save (ppc32 only, 64-bit machines do + * it from their respective probe() function. + */ + setup_power_save(); + + /* Discover standard serial ports. */ + find_legacy_serial_ports(); + + /* Register early console with the printk subsystem. */ + register_early_udbg_console(); + + /* Setup the various CPU maps based on the device-tree. */ + smp_setup_cpu_maps(); + + /* Initialize xmon. */ + xmon_setup(); + + /* Check the SMT related command line arguments (ppc64). */ + check_smt_enabled(); + + /* On BookE, setup per-core TLB data structures. */ + setup_tlb_core_data(); + + /* + * Release secondary cpus out of their spinloops at 0x60 now that + * we can map physical -> logical CPU ids. + * + * Freescale Book3e parts spin in a loop provided by firmware, + * so smp_release_cpus() does nothing for them. + */ +#ifdef CONFIG_SMP + smp_release_cpus(); +#endif + + /* Print various info about the machine that has been gathered so far. */ + print_system_info(); + + /* Reserve large chunks of memory for use by CMA for KVM. */ + kvm_cma_reserve(); + + /* + * Reserve any gigantic pages requested on the command line. + * memblock needs to have been initialized by the time this is + * called since this will reserve memory. + */ + reserve_hugetlb_gpages(); + + klp_init_thread_info(&init_thread_info); + + init_mm.start_code = (unsigned long)_stext; + init_mm.end_code = (unsigned long) _etext; + init_mm.end_data = (unsigned long) _edata; + init_mm.brk = klimit; +#ifdef CONFIG_PPC_64K_PAGES + init_mm.context.pte_frag = NULL; +#endif +#ifdef CONFIG_SPAPR_TCE_IOMMU + mm_iommu_init(&init_mm.context); +#endif + irqstack_early_init(); + exc_lvl_early_init(); + emergency_stack_init(); + + initmem_init(); + +#ifdef CONFIG_DUMMY_CONSOLE + conswitchp = &dummy_con; +#endif + if (ppc_md.setup_arch) + ppc_md.setup_arch(); + + paging_init(); + + /* Initialize the MMU context management stuff. */ + mmu_context_init(); + +#ifdef CONFIG_PPC64 + /* Interrupt code needs to be 64K-aligned. */ + if ((unsigned long)_stext & 0xffff) + panic("Kernelbase not 64K-aligned (0x%lx)!\n", + (unsigned long)_stext); +#endif +} diff --git a/arch/powerpc/kernel/setup.h b/arch/powerpc/kernel/setup.h new file mode 100644 index 000000000000..cfba134b3024 --- /dev/null +++ b/arch/powerpc/kernel/setup.h @@ -0,0 +1,58 @@ +/* + * Prototypes for functions that are shared between setup_(32|64|common).c + * + * Copyright 2016 Michael Ellerman, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef __ARCH_POWERPC_KERNEL_SETUP_H +#define __ARCH_POWERPC_KERNEL_SETUP_H + +void initialize_cache_info(void); +void irqstack_early_init(void); + +#ifdef CONFIG_PPC32 +void setup_power_save(void); +#else +static inline void setup_power_save(void) { }; +#endif + +#if defined(CONFIG_PPC64) && defined(CONFIG_SMP) +void check_smt_enabled(void); +#else +static inline void check_smt_enabled(void) { }; +#endif + +#if defined(CONFIG_PPC_BOOK3E) && defined(CONFIG_SMP) +void setup_tlb_core_data(void); +#else +static inline void setup_tlb_core_data(void) { }; +#endif + +#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_BOOKE) || defined(CONFIG_40x) +void exc_lvl_early_init(void); +#else +static inline void exc_lvl_early_init(void) { }; +#endif + +#ifdef CONFIG_PPC64 +void emergency_stack_init(void); +#else +static inline void emergency_stack_init(void) { }; +#endif + +/* + * Having this in kvm_ppc.h makes include dependencies too + * tricky to solve for setup-common.c so have it here. + */ +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE +void kvm_cma_reserve(void); +#else +static inline void kvm_cma_reserve(void) { }; +#endif + +#endif /* __ARCH_POWERPC_KERNEL_SETUP_H */ diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 6247a3a4fd4b..00f57754407e 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -36,7 +36,6 @@ #include <asm/time.h> #include <asm/serial.h> #include <asm/udbg.h> -#include <asm/mmu_context.h> #include <asm/code-patching.h> #define DBG(fmt...) @@ -191,7 +190,7 @@ int __init ppc_init(void) arch_initcall(ppc_init); -static void __init irqstack_early_init(void) +void __init irqstack_early_init(void) { unsigned int i; @@ -206,7 +205,7 @@ static void __init irqstack_early_init(void) } #if defined(CONFIG_BOOKE) || defined(CONFIG_40x) -static void __init exc_lvl_early_init(void) +void __init exc_lvl_early_init(void) { unsigned int i, hw_cpu; @@ -229,11 +228,9 @@ static void __init exc_lvl_early_init(void) #endif } } -#else -#define exc_lvl_early_init() #endif -static void setup_power_save(void) +void __init setup_power_save(void) { #ifdef CONFIG_6xx if (cpu_has_feature(CPU_FTR_CAN_DOZE) || @@ -248,7 +245,7 @@ static void setup_power_save(void) #endif } -static __init void initialize_cache_info(void) +__init void initialize_cache_info(void) { /* * Set cache line size based on type of cpu as a default. @@ -261,57 +258,3 @@ static __init void initialize_cache_info(void) if (cpu_has_feature(CPU_FTR_UNIFIED_ID_CACHE)) ucache_bsize = icache_bsize = dcache_bsize; } - - -/* Warning, IO base is not yet inited */ -void __init setup_arch(char **cmdline_p) -{ - *cmdline_p = boot_command_line; - - /* so udelay does something sensible, assume <= 1000 bogomips */ - loops_per_jiffy = 500000000 / HZ; - - unflatten_device_tree(); - initialize_cache_info(); - check_for_initrd(); - - probe_machine(); - - setup_panic(); - - setup_power_save(); - - find_legacy_serial_ports(); - - /* Register early console */ - register_early_udbg_console(); - - smp_setup_cpu_maps(); - - xmon_setup(); - - init_mm.start_code = (unsigned long)_stext; - init_mm.end_code = (unsigned long) _etext; - init_mm.end_data = (unsigned long) _edata; - init_mm.brk = klimit; - - exc_lvl_early_init(); - - irqstack_early_init(); - - initmem_init(); - if ( ppc_md.progress ) ppc_md.progress("setup_arch: initmem", 0x3eab); - -#ifdef CONFIG_DUMMY_CONSOLE - conswitchp = &dummy_con; -#endif - - if (ppc_md.setup_arch) - ppc_md.setup_arch(); - if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab); - - paging_init(); - - /* Initialize the MMU context management stuff */ - mmu_context_init(); -} diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index fba96ada3012..d8216aed22b7 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -35,7 +35,6 @@ #include <linux/pci.h> #include <linux/lockdep.h> #include <linux/memblock.h> -#include <linux/hugetlb.h> #include <linux/memory.h> #include <linux/nmi.h> @@ -64,12 +63,10 @@ #include <asm/xmon.h> #include <asm/udbg.h> #include <asm/kexec.h> -#include <asm/mmu_context.h> #include <asm/code-patching.h> -#include <asm/kvm_ppc.h> -#include <asm/hugetlb.h> #include <asm/livepatch.h> #include <asm/opal.h> +#include <asm/cputhreads.h> #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) @@ -100,7 +97,7 @@ int icache_bsize; int ucache_bsize; #if defined(CONFIG_PPC_BOOK3E) && defined(CONFIG_SMP) -static void setup_tlb_core_data(void) +void __init setup_tlb_core_data(void) { int cpu; @@ -133,10 +130,6 @@ static void setup_tlb_core_data(void) } } } -#else -static void setup_tlb_core_data(void) -{ -} #endif #ifdef CONFIG_SMP @@ -144,7 +137,7 @@ static void setup_tlb_core_data(void) static char *smt_enabled_cmdline; /* Look for ibm,smt-enabled OF option */ -static void check_smt_enabled(void) +void __init check_smt_enabled(void) { struct device_node *dn; const char *smt_option; @@ -193,8 +186,6 @@ static int __init early_smt_enabled(char *p) } early_param("smt-enabled", early_smt_enabled); -#else -#define check_smt_enabled() #endif /* CONFIG_SMP */ /** Fix up paca fields required for the boot cpu */ @@ -408,7 +399,7 @@ void smp_release_cpus(void) * cache informations about the CPU that will be used by cache flush * routines and/or provided to userland */ -static void __init initialize_cache_info(void) +void __init initialize_cache_info(void) { struct device_node *np; unsigned long num_cpus = 0; @@ -480,38 +471,6 @@ static void __init initialize_cache_info(void) DBG(" <- initialize_cache_info()\n"); } -static __init void print_system_info(void) -{ - pr_info("-----------------------------------------------------\n"); - pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size); - pr_info("phys_mem_size = 0x%llx\n", memblock_phys_mem_size()); - - if (ppc64_caches.dline_size != 0x80) - pr_info("dcache_line_size = 0x%x\n", ppc64_caches.dline_size); - if (ppc64_caches.iline_size != 0x80) - pr_info("icache_line_size = 0x%x\n", ppc64_caches.iline_size); - - pr_info("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features); - pr_info(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE); - pr_info(" always = 0x%016lx\n", CPU_FTRS_ALWAYS); - pr_info("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features, - cur_cpu_spec->cpu_user_features2); - pr_info("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features); - pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features); - -#ifdef CONFIG_PPC_STD_MMU_64 - if (htab_address) - pr_info("htab_address = 0x%p\n", htab_address); - - pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask); -#endif - - if (PHYSICAL_START > 0) - pr_info("physical_start = 0x%llx\n", - (unsigned long long)PHYSICAL_START); - pr_info("-----------------------------------------------------\n"); -} - /* This returns the limit below which memory accesses to the linear * mapping are guarnateed not to cause a TLB or SLB miss. This is * used to allocate interrupt or emergency stacks for which our @@ -533,7 +492,7 @@ static __init u64 safe_stack_limit(void) #endif } -static void __init irqstack_early_init(void) +void __init irqstack_early_init(void) { u64 limit = safe_stack_limit(); unsigned int i; @@ -553,7 +512,7 @@ static void __init irqstack_early_init(void) } #ifdef CONFIG_PPC_BOOK3E -static void __init exc_lvl_early_init(void) +void __init exc_lvl_early_init(void) { unsigned int i; unsigned long sp; @@ -575,8 +534,6 @@ static void __init exc_lvl_early_init(void) if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC)) patch_exception(0x040, exc_debug_debug_book3e); } -#else -#define exc_lvl_early_init() #endif /* @@ -584,7 +541,7 @@ static void __init exc_lvl_early_init(void) * early in SMP boots before relocation is enabled. Exclusive emergency * stack for machine checks. */ -static void __init emergency_stack_init(void) +void __init emergency_stack_init(void) { u64 limit; unsigned int i; @@ -615,124 +572,6 @@ static void __init emergency_stack_init(void) } } -/* - * Called into from start_kernel this initializes memblock, which is used - * to manage page allocation until mem_init is called. - */ -void __init setup_arch(char **cmdline_p) -{ - *cmdline_p = boot_command_line; - - /* - * Unflatten the device-tree passed by prom_init or kexec - */ - unflatten_device_tree(); - - /* - * Fill the ppc64_caches & systemcfg structures with informations - * retrieved from the device-tree. - */ - initialize_cache_info(); - -#ifdef CONFIG_PPC_RTAS - /* - * Initialize RTAS if available - */ - rtas_initialize(); -#endif /* CONFIG_PPC_RTAS */ - - /* - * Check if we have an initrd provided via the device-tree - */ - check_for_initrd(); - - /* Probe the machine type */ - probe_machine(); - - setup_panic(); - - /* - * We can discover serial ports now since the above did setup the - * hash table management for us, thus ioremap works. We do that early - * so that further code can be debugged - */ - find_legacy_serial_ports(); - - /* - * Register early console - */ - register_early_udbg_console(); - - smp_setup_cpu_maps(); - - /* - * Initialize xmon - */ - xmon_setup(); - - check_smt_enabled(); - setup_tlb_core_data(); - - /* - * Freescale Book3e parts spin in a loop provided by firmware, - * so smp_release_cpus() does nothing for them - */ -#if defined(CONFIG_SMP) - /* - * Release secondary cpus out of their spinloops at 0x60 now that - * we can map physical -> logical CPU ids - */ - smp_release_cpus(); -#endif - - /* Print various info about the machine that has been gathered so far. */ - print_system_info(); - - /* Reserve large chunks of memory for use by CMA for KVM */ - kvm_cma_reserve(); - - /* - * Reserve any gigantic pages requested on the command line. - * memblock needs to have been initialized by the time this is - * called since this will reserve memory. - */ - reserve_hugetlb_gpages(); - - klp_init_thread_info(&init_thread_info); - - init_mm.start_code = (unsigned long)_stext; - init_mm.end_code = (unsigned long) _etext; - init_mm.end_data = (unsigned long) _edata; - init_mm.brk = klimit; -#ifdef CONFIG_PPC_64K_PAGES - init_mm.context.pte_frag = NULL; -#endif -#ifdef CONFIG_SPAPR_TCE_IOMMU - mm_iommu_init(&init_mm.context); -#endif - irqstack_early_init(); - exc_lvl_early_init(); - emergency_stack_init(); - - initmem_init(); - -#ifdef CONFIG_DUMMY_CONSOLE - conswitchp = &dummy_con; -#endif - if (ppc_md.setup_arch) - ppc_md.setup_arch(); - - paging_init(); - - /* Initialize the MMU context management stuff */ - mmu_context_init(); - - /* Interrupt code needs to be 64K-aligned */ - if ((unsigned long)_stext & 0xffff) - panic("Kernelbase not 64K-aligned (0x%lx)!\n", - (unsigned long)_stext); -} - #ifdef CONFIG_SMP #define PCPU_DYN_SIZE () |