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 <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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);
/* 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 *, ...);
{
paca[cpu].hw_cpu_id = phys;
}
-
-extern void smp_release_cpus(void);
-
#else
/* 32-bit */
#ifndef CONFIG_SMP
#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);
#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>
#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>
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
+}
--- /dev/null
+/*
+ * 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 */
#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...)
arch_initcall(ppc_init);
-static void __init irqstack_early_init(void)
+void __init irqstack_early_init(void)
{
unsigned int i;
}
#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;
#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) ||
#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.
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();
-}
#include <linux/pci.h>
#include <linux/lockdep.h>
#include <linux/memblock.h>
-#include <linux/hugetlb.h>
#include <linux/memory.h>
#include <linux/nmi.h>
#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)
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;
}
}
}
-#else
-static void setup_tlb_core_data(void)
-{
-}
#endif
#ifdef CONFIG_SMP
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;
}
early_param("smt-enabled", early_smt_enabled);
-#else
-#define check_smt_enabled()
#endif /* CONFIG_SMP */
/** Fix up paca fields required for the boot cpu */
* 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;
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
#endif
}
-static void __init irqstack_early_init(void)
+void __init irqstack_early_init(void)
{
u64 limit = safe_stack_limit();
unsigned int i;
}
#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;
if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC))
patch_exception(0x040, exc_debug_debug_book3e);
}
-#else
-#define exc_lvl_early_init()
#endif
/*
* 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;
}
}
-/*
- * 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 ()
projects / cascardo / linux.git / commitdiff