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 <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt
Michael Ellerman
parent
009776baa1
commit
b1923caa6e
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@ -351,7 +351,6 @@ extern bool rtas_indicator_present(int token, int *maxindex);
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extern int rtas_set_indicator(int indicator, int index, int new_value);
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extern int rtas_set_indicator_fast(int indicator, int index, int new_value);
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extern void rtas_progress(char *s, unsigned short hex);
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extern void rtas_initialize(void);
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extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data);
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extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data);
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extern int rtas_online_cpus_mask(cpumask_var_t cpus);
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@ -460,9 +459,11 @@ static inline int page_is_rtas_user_buf(unsigned long pfn)
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/* Not the best place to put pSeries_coalesce_init, will be fixed when we
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* move some of the rtas suspend-me stuff to pseries */
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extern void pSeries_coalesce_init(void);
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void rtas_initialize(void);
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#else
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static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;}
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static inline void pSeries_coalesce_init(void) { }
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static inline void rtas_initialize(void) { };
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#endif
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extern int call_rtas(const char *, int, int, unsigned long *, ...);
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@ -160,9 +160,6 @@ static inline void set_hard_smp_processor_id(int cpu, int phys)
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{
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paca[cpu].hw_cpu_id = phys;
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}
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extern void smp_release_cpus(void);
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#else
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/* 32-bit */
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#ifndef CONFIG_SMP
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@ -179,6 +176,12 @@ static inline void set_hard_smp_processor_id(int cpu, int phys)
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#endif /* !CONFIG_SMP */
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#endif /* !CONFIG_PPC64 */
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#if defined(CONFIG_PPC64) && (defined(CONFIG_SMP) || defined(CONFIG_KEXEC))
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extern void smp_release_cpus(void);
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#else
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static inline void smp_release_cpus(void) { };
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#endif
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extern int smt_enabled_at_boot;
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extern void smp_mpic_probe(void);
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@ -35,6 +35,7 @@
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#include <linux/percpu.h>
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#include <linux/memblock.h>
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#include <linux/of_platform.h>
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#include <linux/hugetlb.h>
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#include <asm/io.h>
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#include <asm/paca.h>
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#include <asm/prom.h>
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@ -61,6 +62,12 @@
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#include <asm/cputhreads.h>
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#include <mm/mmu_decl.h>
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#include <asm/fadump.h>
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#include <asm/udbg.h>
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#include <asm/hugetlb.h>
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#include <asm/livepatch.h>
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#include <asm/mmu_context.h>
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#include "setup.h"
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#ifdef DEBUG
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#include <asm/udbg.h>
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@ -758,3 +765,169 @@ void arch_setup_pdev_archdata(struct platform_device *pdev)
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pdev->dev.dma_mask = &pdev->archdata.dma_mask;
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set_dma_ops(&pdev->dev, &dma_direct_ops);
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}
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static __init void print_system_info(void)
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{
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pr_info("-----------------------------------------------------\n");
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#ifdef CONFIG_PPC_STD_MMU_64
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pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size);
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#endif
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#ifdef CONFIG_PPC_STD_MMU_32
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pr_info("Hash_size = 0x%lx\n", Hash_size);
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#endif
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pr_info("phys_mem_size = 0x%llx\n",
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(unsigned long long)memblock_phys_mem_size());
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pr_info("dcache_bsize = 0x%x\n", dcache_bsize);
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pr_info("icache_bsize = 0x%x\n", icache_bsize);
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if (ucache_bsize != 0)
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pr_info("ucache_bsize = 0x%x\n", ucache_bsize);
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pr_info("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features);
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pr_info(" possible = 0x%016lx\n",
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(unsigned long)CPU_FTRS_POSSIBLE);
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pr_info(" always = 0x%016lx\n",
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(unsigned long)CPU_FTRS_ALWAYS);
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pr_info("cpu_user_features = 0x%08x 0x%08x\n",
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cur_cpu_spec->cpu_user_features,
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cur_cpu_spec->cpu_user_features2);
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pr_info("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features);
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#ifdef CONFIG_PPC64
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pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features);
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#endif
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#ifdef CONFIG_PPC_STD_MMU_64
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if (htab_address)
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pr_info("htab_address = 0x%p\n", htab_address);
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if (htab_hash_mask)
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pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask);
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#endif
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#ifdef CONFIG_PPC_STD_MMU_32
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if (Hash)
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pr_info("Hash = 0x%p\n", Hash);
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if (Hash_mask)
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pr_info("Hash_mask = 0x%lx\n", Hash_mask);
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#endif
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if (PHYSICAL_START > 0)
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pr_info("physical_start = 0x%llx\n",
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(unsigned long long)PHYSICAL_START);
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pr_info("-----------------------------------------------------\n");
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}
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/*
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* Called into from start_kernel this initializes memblock, which is used
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* to manage page allocation until mem_init is called.
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*/
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void __init setup_arch(char **cmdline_p)
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{
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*cmdline_p = boot_command_line;
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/* Set a half-reasonable default so udelay does something sensible */
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loops_per_jiffy = 500000000 / HZ;
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/* Unflatten the device-tree passed by prom_init or kexec */
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unflatten_device_tree();
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/*
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* Initialize cache line/block info from device-tree (on ppc64) or
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* just cputable (on ppc32).
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*/
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initialize_cache_info();
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/* Initialize RTAS if available. */
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rtas_initialize();
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/* Check if we have an initrd provided via the device-tree. */
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check_for_initrd();
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/* Probe the machine type, establish ppc_md. */
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probe_machine();
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/* Setup panic notifier if requested by the platform. */
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setup_panic();
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/*
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* Configure ppc_md.power_save (ppc32 only, 64-bit machines do
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* it from their respective probe() function.
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*/
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setup_power_save();
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/* Discover standard serial ports. */
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find_legacy_serial_ports();
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/* Register early console with the printk subsystem. */
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register_early_udbg_console();
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/* Setup the various CPU maps based on the device-tree. */
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smp_setup_cpu_maps();
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/* Initialize xmon. */
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xmon_setup();
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/* Check the SMT related command line arguments (ppc64). */
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check_smt_enabled();
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/* On BookE, setup per-core TLB data structures. */
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setup_tlb_core_data();
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/*
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* Release secondary cpus out of their spinloops at 0x60 now that
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* we can map physical -> logical CPU ids.
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*
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* Freescale Book3e parts spin in a loop provided by firmware,
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* so smp_release_cpus() does nothing for them.
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*/
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#ifdef CONFIG_SMP
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smp_release_cpus();
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#endif
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/* Print various info about the machine that has been gathered so far. */
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print_system_info();
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/* Reserve large chunks of memory for use by CMA for KVM. */
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kvm_cma_reserve();
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/*
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* Reserve any gigantic pages requested on the command line.
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* memblock needs to have been initialized by the time this is
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* called since this will reserve memory.
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*/
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reserve_hugetlb_gpages();
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klp_init_thread_info(&init_thread_info);
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init_mm.start_code = (unsigned long)_stext;
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init_mm.end_code = (unsigned long) _etext;
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init_mm.end_data = (unsigned long) _edata;
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init_mm.brk = klimit;
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#ifdef CONFIG_PPC_64K_PAGES
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init_mm.context.pte_frag = NULL;
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#endif
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#ifdef CONFIG_SPAPR_TCE_IOMMU
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mm_iommu_init(&init_mm.context);
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#endif
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irqstack_early_init();
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exc_lvl_early_init();
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emergency_stack_init();
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initmem_init();
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#ifdef CONFIG_DUMMY_CONSOLE
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conswitchp = &dummy_con;
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#endif
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if (ppc_md.setup_arch)
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ppc_md.setup_arch();
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paging_init();
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/* Initialize the MMU context management stuff. */
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mmu_context_init();
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#ifdef CONFIG_PPC64
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/* Interrupt code needs to be 64K-aligned. */
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if ((unsigned long)_stext & 0xffff)
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panic("Kernelbase not 64K-aligned (0x%lx)!\n",
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(unsigned long)_stext);
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#endif
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}
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@ -0,0 +1,58 @@
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/*
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* Prototypes for functions that are shared between setup_(32|64|common).c
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*
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* Copyright 2016 Michael Ellerman, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef __ARCH_POWERPC_KERNEL_SETUP_H
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#define __ARCH_POWERPC_KERNEL_SETUP_H
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void initialize_cache_info(void);
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void irqstack_early_init(void);
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#ifdef CONFIG_PPC32
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void setup_power_save(void);
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#else
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static inline void setup_power_save(void) { };
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#endif
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#if defined(CONFIG_PPC64) && defined(CONFIG_SMP)
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void check_smt_enabled(void);
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#else
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static inline void check_smt_enabled(void) { };
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#endif
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#if defined(CONFIG_PPC_BOOK3E) && defined(CONFIG_SMP)
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void setup_tlb_core_data(void);
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#else
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static inline void setup_tlb_core_data(void) { };
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#endif
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#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_BOOKE) || defined(CONFIG_40x)
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void exc_lvl_early_init(void);
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#else
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static inline void exc_lvl_early_init(void) { };
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#endif
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#ifdef CONFIG_PPC64
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void emergency_stack_init(void);
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#else
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static inline void emergency_stack_init(void) { };
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#endif
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/*
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* Having this in kvm_ppc.h makes include dependencies too
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* tricky to solve for setup-common.c so have it here.
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*/
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#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
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void kvm_cma_reserve(void);
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#else
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static inline void kvm_cma_reserve(void) { };
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#endif
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#endif /* __ARCH_POWERPC_KERNEL_SETUP_H */
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@ -36,7 +36,6 @@
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#include <asm/time.h>
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#include <asm/serial.h>
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#include <asm/udbg.h>
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#include <asm/mmu_context.h>
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#include <asm/code-patching.h>
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#define DBG(fmt...)
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@ -191,7 +190,7 @@ int __init ppc_init(void)
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arch_initcall(ppc_init);
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static void __init irqstack_early_init(void)
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void __init irqstack_early_init(void)
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{
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unsigned int i;
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@ -206,7 +205,7 @@ static void __init irqstack_early_init(void)
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}
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#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
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static void __init exc_lvl_early_init(void)
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void __init exc_lvl_early_init(void)
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{
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unsigned int i, hw_cpu;
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@ -229,11 +228,9 @@ static void __init exc_lvl_early_init(void)
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#endif
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}
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}
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#else
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#define exc_lvl_early_init()
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#endif
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static void setup_power_save(void)
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void __init setup_power_save(void)
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{
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#ifdef CONFIG_6xx
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if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
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@ -248,7 +245,7 @@ static void setup_power_save(void)
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#endif
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}
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static __init void initialize_cache_info(void)
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__init void initialize_cache_info(void)
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{
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/*
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* Set cache line size based on type of cpu as a default.
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@ -261,57 +258,3 @@ static __init void initialize_cache_info(void)
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if (cpu_has_feature(CPU_FTR_UNIFIED_ID_CACHE))
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ucache_bsize = icache_bsize = dcache_bsize;
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}
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/* Warning, IO base is not yet inited */
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void __init setup_arch(char **cmdline_p)
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{
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*cmdline_p = boot_command_line;
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/* so udelay does something sensible, assume <= 1000 bogomips */
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loops_per_jiffy = 500000000 / HZ;
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unflatten_device_tree();
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initialize_cache_info();
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check_for_initrd();
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probe_machine();
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setup_panic();
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setup_power_save();
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find_legacy_serial_ports();
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/* Register early console */
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register_early_udbg_console();
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smp_setup_cpu_maps();
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xmon_setup();
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init_mm.start_code = (unsigned long)_stext;
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init_mm.end_code = (unsigned long) _etext;
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init_mm.end_data = (unsigned long) _edata;
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init_mm.brk = klimit;
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exc_lvl_early_init();
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irqstack_early_init();
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initmem_init();
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if ( ppc_md.progress ) ppc_md.progress("setup_arch: initmem", 0x3eab);
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#ifdef CONFIG_DUMMY_CONSOLE
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conswitchp = &dummy_con;
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#endif
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if (ppc_md.setup_arch)
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ppc_md.setup_arch();
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if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
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paging_init();
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/* Initialize the MMU context management stuff */
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mmu_context_init();
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}
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@ -35,7 +35,6 @@
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#include <linux/pci.h>
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#include <linux/lockdep.h>
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#include <linux/memblock.h>
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#include <linux/hugetlb.h>
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#include <linux/memory.h>
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#include <linux/nmi.h>
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@ -64,12 +63,10 @@
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#include <asm/xmon.h>
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#include <asm/udbg.h>
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#include <asm/kexec.h>
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#include <asm/mmu_context.h>
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#include <asm/code-patching.h>
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#include <asm/kvm_ppc.h>
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#include <asm/hugetlb.h>
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#include <asm/livepatch.h>
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#include <asm/opal.h>
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#include <asm/cputhreads.h>
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#ifdef DEBUG
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#define DBG(fmt...) udbg_printf(fmt)
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@ -100,7 +97,7 @@ int icache_bsize;
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int ucache_bsize;
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#if defined(CONFIG_PPC_BOOK3E) && defined(CONFIG_SMP)
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static void setup_tlb_core_data(void)
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void __init setup_tlb_core_data(void)
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{
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int cpu;
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@ -133,10 +130,6 @@ static void setup_tlb_core_data(void)
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}
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}
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}
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#else
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static void setup_tlb_core_data(void)
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{
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}
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#endif
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#ifdef CONFIG_SMP
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@ -144,7 +137,7 @@ static void setup_tlb_core_data(void)
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static char *smt_enabled_cmdline;
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/* Look for ibm,smt-enabled OF option */
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static void check_smt_enabled(void)
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void __init check_smt_enabled(void)
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{
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struct device_node *dn;
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const char *smt_option;
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@ -193,8 +186,6 @@ static int __init early_smt_enabled(char *p)
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}
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early_param("smt-enabled", early_smt_enabled);
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#else
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#define check_smt_enabled()
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#endif /* CONFIG_SMP */
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||||
|
||||
/** 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 ()
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue