From 0f2b3442fb850626d50a9d7e533c9f859ef15e6a Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 5 Jul 2016 15:03:55 +1000 Subject: powerpc: Don't test for machine type in smp_setup_cpu_maps() The subsequent test for RTAS along with the LPAR test are sufficient Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/setup-common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/kernel/setup-common.c') diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 8ca79b7503d8..2a3564caafd3 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -494,7 +494,7 @@ void __init smp_setup_cpu_maps(void) * On pSeries LPAR, we need to know how many cpus * could possibly be added to this partition. */ - if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR) && + if (firmware_has_feature(FW_FEATURE_LPAR) && (dn = of_find_node_by_path("/rtas"))) { int num_addr_cell, num_size_cell, maxcpus; const __be32 *ireg; -- cgit v1.2.3 From 84b62c72faa197a5c9b75ee93527add31695fb32 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 5 Jul 2016 15:03:59 +1000 Subject: powerpc: Ensure that ppc_md is empty before probing for machine type Anything in there will be overwritten, so it helps catching nasty bugs if we check that it's indeed full of NULL's before we do so. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/setup-common.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch/powerpc/kernel/setup-common.c') diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 2a3564caafd3..b8ee1c867ee3 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -575,6 +575,7 @@ void probe_machine(void) { extern struct machdep_calls __machine_desc_start; extern struct machdep_calls __machine_desc_end; + unsigned int i; /* * Iterate all ppc_md structures until we find the proper @@ -582,6 +583,17 @@ void probe_machine(void) */ DBG("Probing machine type ...\n"); + /* + * Check ppc_md is empty, if not we have a bug, ie, we setup an + * entry before probe_machine() which will be overwritten + */ + for (i = 0; i < (sizeof(ppc_md) / sizeof(void *)); i++) { + if (((void **)&ppc_md)[i]) { + printk(KERN_ERR "Entry %d in ppc_md non empty before" + " machine probe !\n", i); + } + } + for (machine_id = &__machine_desc_start; machine_id < &__machine_desc_end; machine_id++) { -- cgit v1.2.3 From f7b9ebb79e90b19bf6a2cb805a536258437fc3fa Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 5 Jul 2016 15:04:12 +1000 Subject: powerpc: Re-order setup_panic() Do it right after probe_machine() since it's about testing ppc_md, and put the test in the common code. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/setup-common.c | 2 ++ arch/powerpc/kernel/setup_32.c | 5 ++--- arch/powerpc/kernel/setup_64.c | 5 ++--- 3 files changed, 6 insertions(+), 6 deletions(-) (limited to 'arch/powerpc/kernel/setup-common.c') diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index b8ee1c867ee3..ca9255e3b763 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -688,6 +688,8 @@ static struct notifier_block ppc_panic_block = { void __init setup_panic(void) { + if (!ppc_md.panic) + return; atomic_notifier_chain_register(&panic_notifier_list, &ppc_panic_block); } diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 58674b602149..6247a3a4fd4b 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -277,6 +277,8 @@ void __init setup_arch(char **cmdline_p) probe_machine(); + setup_panic(); + setup_power_save(); find_legacy_serial_ports(); @@ -288,9 +290,6 @@ void __init setup_arch(char **cmdline_p) xmon_setup(); - if (ppc_md.panic) - setup_panic(); - init_mm.start_code = (unsigned long)_stext; init_mm.end_code = (unsigned long) _etext; init_mm.end_data = (unsigned long) _edata; diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 3fd59bca06f7..f55c25dff02c 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -649,6 +649,8 @@ void __init setup_arch(char **cmdline_p) /* 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 @@ -696,9 +698,6 @@ void __init setup_arch(char **cmdline_p) */ reserve_hugetlb_gpages(); - if (ppc_md.panic) - setup_panic(); - klp_init_thread_info(&init_thread_info); init_mm.start_code = (unsigned long)_stext; -- cgit v1.2.3 From b1923caa6e641f3d0a93b5d045aef67ded5aef67 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 5 Jul 2016 15:07:51 +1000 Subject: powerpc: Merge 32-bit and 64-bit setup_arch() There is little enough differences now. mpe: Add a/p/k/setup.h to contain the prototypes and empty versions of functions we need, rather than using weak functions. Add a few other empty versions to avoid as many #ifdefs as possible in the code. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/rtas.h | 3 +- arch/powerpc/include/asm/smp.h | 9 +- arch/powerpc/kernel/setup-common.c | 173 ++++++++++++++++++++++++++++++++++++ arch/powerpc/kernel/setup.h | 58 ++++++++++++ arch/powerpc/kernel/setup_32.c | 65 +------------- arch/powerpc/kernel/setup_64.c | 175 ++----------------------------------- 6 files changed, 250 insertions(+), 233 deletions(-) create mode 100644 arch/powerpc/kernel/setup.h (limited to 'arch/powerpc/kernel/setup-common.c') 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 #include #include +#include #include #include #include @@ -61,6 +62,12 @@ #include #include #include +#include +#include +#include +#include + +#include "setup.h" #ifdef DEBUG #include @@ -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 #include #include -#include #include #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 #include #include -#include #include #include @@ -64,12 +63,10 @@ #include #include #include -#include #include -#include -#include #include #include +#include #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 () -- cgit v1.2.3