From: Benjamin Herrenschmidt <b...@kernel.crashing.org>
There is little enough differences now.
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
[mpe: Add empty versions using #ifdef in setup.h rather than weak functions]
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
arch/powerpc/include/asm/kvm_ppc.h | 4 -
arch/powerpc/include/asm/rtas.h | 3 +-
arch/powerpc/include/asm/setup.h | 46 +++++++++-
arch/powerpc/kernel/setup-common.c | 169 +++++++++++++++++++++++++++++++++++
arch/powerpc/kernel/setup_32.c | 65 +-------------
arch/powerpc/kernel/setup_64.c | 178 ++-----------------------------------
6 files changed, 228 insertions(+), 237 deletions(-)
v2: Add empty versions using #ifdef in setup.h rather than weak functions.
diff --git a/arch/powerpc/include/asm/kvm_ppc.h
b/arch/powerpc/include/asm/kvm_ppc.h
index 2544edabe7f3..bad829aae794 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -395,7 +395,6 @@ void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
struct openpic;
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
-extern void kvm_cma_reserve(void) __init;
static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
{
paca[cpu].kvm_hstate.xics_phys = addr;
@@ -425,9 +424,6 @@ extern void kvm_hv_vm_deactivated(void);
extern bool kvm_hv_mode_active(void);
#else
-static inline void __init kvm_cma_reserve(void)
-{}
-
static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
{}
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/setup.h b/arch/powerpc/include/asm/setup.h
index 654d64c9f3ac..3d171fd315c0 100644
--- a/arch/powerpc/include/asm/setup.h
+++ b/arch/powerpc/include/asm/setup.h
@@ -19,6 +19,9 @@ extern unsigned long reloc_offset(void);
extern unsigned long add_reloc_offset(unsigned long);
extern void reloc_got2(unsigned long);
+extern void initialize_cache_info(void);
+extern void irqstack_early_init(void);
+
#define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x)))
void check_for_initrd(void);
@@ -38,7 +41,48 @@ static inline void pseries_big_endian_exceptions(void) {}
static inline void pseries_little_endian_exceptions(void) {}
#endif /* CONFIG_PPC_PSERIES */
+#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);
+void smp_release_cpus(void);
+#else
+static inline void emergency_stack_init(void) { };
+static inline void smp_release_cpus(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 __init kvm_cma_reserve(void);
+#else
+static inline void kvm_cma_reserve(void) { };
+#endif
+
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_POWERPC_SETUP_H */
-
diff --git a/arch/powerpc/kernel/setup-common.c
b/arch/powerpc/kernel/setup-common.c
index ca9255e3b763..c6eda53d18c5 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 +62,10 @@
#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>
#ifdef DEBUG
#include <asm/udbg.h>
@@ -758,3 +763,167 @@ 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
+ */
+ smp_release_cpus();
+
+ /* Print various info about the machine that gave 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_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 a4d603c62bdf..c16d5f32ec1f 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>
+#include <asm/livepatch.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 */
@@ -407,7 +398,7 @@ 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;
@@ -479,38 +470,6 @@ 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
@@ -532,7 +491,7 @@ 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;
@@ -552,7 +511,7 @@ 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;
@@ -574,8 +533,6 @@ 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
/*
@@ -583,7 +540,7 @@ 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;
@@ -614,125 +571,6 @@ 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 gave 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 ()
--
2.7.4
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
