x86: rename setup_32.c to setup.c

and let 64 bit use that instead of setup_64.c

[ mingo@elte.hu ]

x86: build fix

fix:

arch/x86/kernel/setup.c: In function ‘setup_arch':
arch/x86/kernel/setup.c:561: error: implicit declaration of function ‘efi_reserve_early'

and:

arch/x86/kernel/setup.c:766: error: implicit declaration of function 'init_cpu_to_node'

and:

arch/x86/kernel/setup.c:676: warning: operation on 'max_pfn_mapped' may be undefined

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 672 insertions, 0 deletions

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
new file mode 100644
index 000000000000..222d7038f2fd
--- /dev/null
+++ b/arch/x86/kernel/setup.c
@@ -0,0 +1,672 @@
+/*
+ *  Copyright (C) 1995  Linus Torvalds
+ *
+ *  Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
+ *
+ *  Memory region support
+ *      David Parsons <orc@pell.chi.il.us>, July-August 1999
+ *
+ *  Added E820 sanitization routine (removes overlapping memory regions);
+ *  Brian Moyle <bmoyle@mvista.com>, February 2001
+ *
+ * Moved CPU detection code to cpu/${cpu}.c
+ *    Patrick Mochel <mochel@osdl.org>, March 2002
+ *
+ *  Provisions for empty E820 memory regions (reported by certain BIOSes).
+ *  Alex Achenbach <xela@slit.de>, December 2002.
+ *
+ */
+
+/*
+ * This file handles the architecture-dependent parts of initialization
+ */
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/mmzone.h>
+#include <linux/screen_info.h>
+#include <linux/ioport.h>
+#include <linux/acpi.h>
+#include <linux/apm_bios.h>
+#include <linux/initrd.h>
+#include <linux/bootmem.h>
+#include <linux/seq_file.h>
+#include <linux/console.h>
+#include <linux/mca.h>
+#include <linux/root_dev.h>
+#include <linux/highmem.h>
+#include <linux/module.h>
+#include <linux/efi.h>
+#include <linux/init.h>
+#include <linux/edd.h>
+#include <linux/iscsi_ibft.h>
+#include <linux/nodemask.h>
+#include <linux/kexec.h>
+#include <linux/dmi.h>
+#include <linux/pfn.h>
+#include <linux/pci.h>
+#include <asm/pci-direct.h>
+#include <linux/init_ohci1394_dma.h>
+#include <linux/kvm_para.h>
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/user.h>
+#include <linux/delay.h>
+#include <linux/highmem.h>
+
+#include <linux/kallsyms.h>
+#include <linux/edd.h>
+#include <linux/iscsi_ibft.h>
+#include <linux/kexec.h>
+#include <linux/cpufreq.h>
+#include <linux/dma-mapping.h>
+#include <linux/ctype.h>
+#include <linux/uaccess.h>
+
+#include <linux/percpu.h>
+#include <linux/crash_dump.h>
+
+#include <video/edid.h>
+
+#include <asm/mtrr.h>
+#include <asm/apic.h>
+#include <asm/e820.h>
+#include <asm/mpspec.h>
+#include <asm/setup.h>
+#include <asm/arch_hooks.h>
+#include <asm/efi.h>
+#include <asm/sections.h>
+#include <asm/dmi.h>
+#include <asm/io_apic.h>
+#include <asm/ist.h>
+#include <asm/vmi.h>
+#include <setup_arch.h>
+#include <asm/bios_ebda.h>
+#include <asm/cacheflush.h>
+#include <asm/processor.h>
+#include <asm/bugs.h>
+
+#include <asm/system.h>
+#include <asm/vsyscall.h>
+#include <asm/smp.h>
+#include <asm/desc.h>
+#include <asm/dma.h>
+#include <asm/gart.h>
+#include <asm/mmu_context.h>
+#include <asm/proto.h>
+
+#include <mach_apic.h>
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define ARCH_SETUP
+#endif
+
+#include <asm/percpu.h>
+#include <asm/sections.h>
+#include <asm/topology.h>
+#include <asm/apicdef.h>
+#ifdef CONFIG_X86_64
+#include <asm/numa_64.h>
+#endif
+#ifdef CONFIG_X86_32
+#include <asm/highmem.h>
+#endif
+
+/* This value is set up by the early boot code to point to the value
+   immediately after the boot time page tables.  It contains a *physical*
+   address, and must not be in the .bss segment! */
+unsigned long init_pg_tables_start __initdata = ~0UL;
+unsigned long init_pg_tables_end __initdata = ~0UL;
+
+/*
+ * Machine setup..
+ */
+static struct resource data_resource = {
+        .name   = "Kernel data",
+        .start  = 0,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+static struct resource code_resource = {
+        .name   = "Kernel code",
+        .start  = 0,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+static struct resource bss_resource = {
+        .name   = "Kernel bss",
+        .start  = 0,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+
+#ifdef CONFIG_X86_32
+static struct resource video_ram_resource = {
+        .name   = "Video RAM area",
+        .start  = 0xa0000,
+        .end    = 0xbffff,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+/* cpu data as detected by the assembly code in head.S */
+struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1};
+/* common cpu data for all cpus */
+struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1};
+EXPORT_SYMBOL(boot_cpu_data);
+static void set_mca_bus(int x)
+{
+#ifdef CONFIG_MCA
+        MCA_bus = x;
+#endif
+}
+
+unsigned int def_to_bigsmp;
+
+/* for MCA, but anyone else can use it if they want */
+unsigned int machine_id;
+unsigned int machine_submodel_id;
+unsigned int BIOS_revision;
+
+struct apm_info apm_info;
+EXPORT_SYMBOL(apm_info);
+
+#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
+        defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
+struct ist_info ist_info;
+EXPORT_SYMBOL(ist_info);
+#else
+struct ist_info ist_info;
+#endif
+
+#else
+struct cpuinfo_x86 boot_cpu_data __read_mostly;
+EXPORT_SYMBOL(boot_cpu_data);
+#endif
+
+
+#if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
+unsigned long mmu_cr4_features;
+#else
+unsigned long mmu_cr4_features = X86_CR4_PAE;
+#endif
+
+/* Boot loader ID as an integer, for the benefit of proc_dointvec */
+int bootloader_type;
+
+/*
+ * Early DMI memory
+ */
+int dmi_alloc_index;
+char dmi_alloc_data[DMI_MAX_DATA];
+
+/*
+ * Setup options
+ */
+struct screen_info screen_info;
+EXPORT_SYMBOL(screen_info);
+struct edid_info edid_info;
+EXPORT_SYMBOL_GPL(edid_info);
+
+extern int root_mountflags;
+
+unsigned long saved_video_mode;
+
+#define RAMDISK_IMAGE_START_MASK        0x07FF
+#define RAMDISK_PROMPT_FLAG             0x8000
+#define RAMDISK_LOAD_FLAG               0x4000
+
+static char __initdata command_line[COMMAND_LINE_SIZE];
+
+#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
+struct edd edd;
+#ifdef CONFIG_EDD_MODULE
+EXPORT_SYMBOL(edd);
+#endif
+/**
+ * copy_edd() - Copy the BIOS EDD information
+ *              from boot_params into a safe place.
+ *
+ */
+static inline void copy_edd(void)
+{
+     memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer,
+            sizeof(edd.mbr_signature));
+     memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info));
+     edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries;
+     edd.edd_info_nr = boot_params.eddbuf_entries;
+}
+#else
+static inline void copy_edd(void)
+{
+}
+#endif
+
+#ifdef CONFIG_BLK_DEV_INITRD
+
+#ifdef CONFIG_X86_32
+
+#define MAX_MAP_CHUNK   (NR_FIX_BTMAPS << PAGE_SHIFT)
+static void __init relocate_initrd(void)
+{
+
+        u64 ramdisk_image = boot_params.hdr.ramdisk_image;
+        u64 ramdisk_size  = boot_params.hdr.ramdisk_size;
+        u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
+        u64 ramdisk_here;
+        unsigned long slop, clen, mapaddr;
+        char *p, *q;
+
+        /* We need to move the initrd down into lowmem */
+        ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size,
+                                         PAGE_SIZE);
+
+        if (ramdisk_here == -1ULL)
+                panic("Cannot find place for new RAMDISK of size %lld\n",
+                         ramdisk_size);
+
+        /* Note: this includes all the lowmem currently occupied by
+           the initrd, we rely on that fact to keep the data intact. */
+        reserve_early(ramdisk_here, ramdisk_here + ramdisk_size,
+                         "NEW RAMDISK");
+        initrd_start = ramdisk_here + PAGE_OFFSET;
+        initrd_end   = initrd_start + ramdisk_size;
+        printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n",
+                         ramdisk_here, ramdisk_here + ramdisk_size);
+
+        q = (char *)initrd_start;
+
+        /* Copy any lowmem portion of the initrd */
+        if (ramdisk_image < end_of_lowmem) {
+                clen = end_of_lowmem - ramdisk_image;
+                p = (char *)__va(ramdisk_image);
+                memcpy(q, p, clen);
+                q += clen;
+                ramdisk_image += clen;
+                ramdisk_size  -= clen;
+        }
+
+        /* Copy the highmem portion of the initrd */
+        while (ramdisk_size) {
+                slop = ramdisk_image & ~PAGE_MASK;
+                clen = ramdisk_size;
+                if (clen > MAX_MAP_CHUNK-slop)
+                        clen = MAX_MAP_CHUNK-slop;
+                mapaddr = ramdisk_image & PAGE_MASK;
+                p = early_ioremap(mapaddr, clen+slop);
+                memcpy(q, p+slop, clen);
+                early_iounmap(p, clen+slop);
+                q += clen;
+                ramdisk_image += clen;
+                ramdisk_size  -= clen;
+        }
+        /* high pages is not converted by early_res_to_bootmem */
+        ramdisk_image = boot_params.hdr.ramdisk_image;
+        ramdisk_size  = boot_params.hdr.ramdisk_size;
+        printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to"
+                " %08llx - %08llx\n",
+                ramdisk_image, ramdisk_image + ramdisk_size - 1,
+                ramdisk_here, ramdisk_here + ramdisk_size - 1);
+}
+#endif
+
+static void __init reserve_initrd(void)
+{
+        u64 ramdisk_image = boot_params.hdr.ramdisk_image;
+        u64 ramdisk_size  = boot_params.hdr.ramdisk_size;
+        u64 ramdisk_end   = ramdisk_image + ramdisk_size;
+        u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
+
+        if (!boot_params.hdr.type_of_loader ||
+            !ramdisk_image || !ramdisk_size)
+                return;         /* No initrd provided by bootloader */
+
+        initrd_start = 0;
+
+        if (ramdisk_size >= (end_of_lowmem>>1)) {
+                free_early(ramdisk_image, ramdisk_end);
+                printk(KERN_ERR "initrd too large to handle, "
+                       "disabling initrd\n");
+                return;
+        }
+
+        printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image,
+                        ramdisk_end);
+
+
+        if (ramdisk_end <= end_of_lowmem) {
+                /* All in lowmem, easy case */
+                /*
+                 * don't need to reserve again, already reserved early
+                 * in i386_start_kernel
+                 */
+                initrd_start = ramdisk_image + PAGE_OFFSET;
+                initrd_end = initrd_start + ramdisk_size;
+                return;
+        }
+
+#ifdef CONFIG_X86_32
+        relocate_initrd();
+#else
+        printk(KERN_ERR "initrd extends beyond end of memory "
+               "(0x%08llx > 0x%08llx)\ndisabling initrd\n",
+               ramdisk_end, end_of_lowmem);
+        initrd_start = 0;
+#endif
+        free_early(ramdisk_image, ramdisk_end);
+}
+#else
+static void __init reserve_initrd(void)
+{
+}
+#endif /* CONFIG_BLK_DEV_INITRD */
+
+/*
+ * Determine if we were loaded by an EFI loader.  If so, then we have also been
+ * passed the efi memmap, systab, etc., so we should use these data structures
+ * for initialization.  Note, the efi init code path is determined by the
+ * global efi_enabled. This allows the same kernel image to be used on existing
+ * systems (with a traditional BIOS) as well as on EFI systems.
+ */
+/*
+ * setup_arch - architecture-specific boot-time initializations
+ *
+ * Note: On x86_64, fixmaps are ready for use even before this is called.
+ */
+
+void __init setup_arch(char **cmdline_p)
+{
+#ifdef CONFIG_X86_32
+        memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
+        pre_setup_arch_hook();
+        early_cpu_init();
+        early_ioremap_init();
+        reserve_setup_data();
+#else
+        printk(KERN_INFO "Command line: %s\n", boot_command_line);
+#endif
+
+        ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev);
+        screen_info = boot_params.screen_info;
+        edid_info = boot_params.edid_info;
+#ifdef CONFIG_X86_32
+        apm_info.bios = boot_params.apm_bios_info;
+        ist_info = boot_params.ist_info;
+        if (boot_params.sys_desc_table.length != 0) {
+                set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2);
+                machine_id = boot_params.sys_desc_table.table[0];
+                machine_submodel_id = boot_params.sys_desc_table.table[1];
+                BIOS_revision = boot_params.sys_desc_table.table[2];
+        }
+#endif
+        saved_video_mode = boot_params.hdr.vid_mode;
+        bootloader_type = boot_params.hdr.type_of_loader;
+
+#ifdef CONFIG_BLK_DEV_RAM
+        rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK;
+        rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0);
+        rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0);
+#endif
+#ifdef CONFIG_EFI
+        if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
+#ifdef CONFIG_X86_32
+                     "EL32",
+#else
+                     "EL64",
+#endif
+         4)) {
+                efi_enabled = 1;
+                efi_reserve_early();
+        }
+#endif
+
+        ARCH_SETUP
+
+        setup_memory_map();
+        copy_edd();
+
+        if (!boot_params.hdr.root_flags)
+                root_mountflags &= ~MS_RDONLY;
+        init_mm.start_code = (unsigned long) _text;
+        init_mm.end_code = (unsigned long) _etext;
+        init_mm.end_data = (unsigned long) _edata;
+#ifdef CONFIG_X86_32
+        init_mm.brk = init_pg_tables_end + PAGE_OFFSET;
+#else
+        init_mm.brk = (unsigned long) &_end;
+#endif
+
+        code_resource.start = virt_to_phys(_text);
+        code_resource.end = virt_to_phys(_etext)-1;
+        data_resource.start = virt_to_phys(_etext);
+        data_resource.end = virt_to_phys(_edata)-1;
+        bss_resource.start = virt_to_phys(&__bss_start);
+        bss_resource.end = virt_to_phys(&__bss_stop)-1;
+
+#ifdef CONFIG_X86_64
+        early_cpu_init();
+#endif
+        strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
+        *cmdline_p = command_line;
+
+        parse_setup_data();
+
+        parse_early_param();
+
+        if (acpi_mps_check()) {
+#ifdef CONFIG_X86_LOCAL_APIC
+#ifdef CONFIG_X86_32
+                enable_local_apic = -1;
+#else
+                disable_apic = 1;
+#endif
+#endif
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
+        }
+
+        finish_e820_parsing();
+
+#ifdef CONFIG_X86_32
+        probe_roms();
+#else
+# ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
+        if (init_ohci1394_dma_early)
+                init_ohci1394_dma_on_all_controllers();
+# endif
+#endif
+
+        /* after parse_early_param, so could debug it */
+        insert_resource(&iomem_resource, &code_resource);
+        insert_resource(&iomem_resource, &data_resource);
+        insert_resource(&iomem_resource, &bss_resource);
+
+        if (efi_enabled)
+                efi_init();
+
+#ifdef CONFIG_X86_32
+        if (ppro_with_ram_bug()) {
+                e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
+                                  E820_RESERVED);
+                sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+                printk(KERN_INFO "fixed physical RAM map:\n");
+                e820_print_map("bad_ppro");
+        }
+#else
+        early_gart_iommu_check();
+#endif
+
+        e820_register_active_regions(0, 0, -1UL);
+        /*
+         * partially used pages are not usable - thus
+         * we are rounding upwards:
+         */
+        max_pfn = e820_end_of_ram();
+
+        /* preallocate 4k for mptable mpc */
+        early_reserve_e820_mpc_new();
+        /* update e820 for memory not covered by WB MTRRs */
+        mtrr_bp_init();
+        if (mtrr_trim_uncached_memory(max_pfn)) {
+                remove_all_active_ranges();
+                e820_register_active_regions(0, 0, -1UL);
+                max_pfn = e820_end_of_ram();
+        }
+
+#ifdef CONFIG_X86_32
+        /* max_low_pfn get updated here */
+        find_low_pfn_range();
+#else
+        num_physpages = max_pfn;
+
+        check_efer();
+
+        /* How many end-of-memory variables you have, grandma! */
+        /* need this before calling reserve_initrd */
+        max_low_pfn = max_pfn;
+        high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
+#endif
+
+        /* max_pfn_mapped is updated here */
+        max_pfn_mapped = init_memory_mapping(0, (max_low_pfn << PAGE_SHIFT));
+
+        reserve_initrd();
+
+#ifdef CONFIG_X86_64
+        vsmp_init();
+#endif
+
+        dmi_scan_machine();
+
+        io_delay_init();
+
+        /*
+         * Parse the ACPI tables for possible boot-time SMP configuration.
+         */
+        acpi_boot_table_init();
+
+#ifdef CONFIG_X86_64
+        /* Remove active ranges so rediscovery with NUMA-awareness happens */
+        remove_all_active_ranges();
+#endif
+
+#ifdef CONFIG_ACPI_NUMA
+        /*
+         * Parse SRAT to discover nodes.
+         */
+        acpi_numa_init();
+#endif
+
+        initmem_init(0, max_pfn);
+
+#ifdef CONFIG_X86_64
+        dma32_reserve_bootmem();
+#endif
+
+#ifdef CONFIG_ACPI_SLEEP
+        /*
+         * Reserve low memory region for sleep support.
+         */
+        acpi_reserve_bootmem();
+#endif
+#if defined(CONFIG_X86_FIND_SMP_CONFIG) && defined(CONFIG_X86_32) || \
+    defined(CONFIG_X86_MPPARSE) && defined(CONFIG_X86_64)
+        /*
+         * Find and reserve possible boot-time SMP configuration:
+         */
+        find_smp_config();
+#endif
+        reserve_crashkernel();
+
+        reserve_ibft_region();
+
+#ifdef CONFIG_KVM_CLOCK
+        kvmclock_init();
+#endif
+
+#if defined(CONFIG_VMI) && defined(CONFIG_X86_32)
+        /*
+         * Must be after max_low_pfn is determined, and before kernel
+         * pagetables are setup.
+         */
+        vmi_init();
+#endif
+
+        paging_init();
+
+#ifdef CONFIG_X86_64
+        map_vsyscall();
+#endif
+
+        /*
+         * NOTE: On x86-32, only from this point on, fixmaps are ready for use.
+         */
+
+#if defined(CONFIG_PROVIDE_OHCI1394_DMA_INIT) && defined(CONFIG_X86_32)
+        if (init_ohci1394_dma_early)
+                init_ohci1394_dma_on_all_controllers();
+#endif
+
+#ifdef CONFIG_X86_GENERICARCH
+        generic_apic_probe();
+#endif
+
+        early_quirks();
+
+        /*
+         * Read APIC and some other early information from ACPI tables.
+         */
+        acpi_boot_init();
+
+#ifdef CONFIG_X86_64
+        init_cpu_to_node();
+#endif
+
+#if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS)
+        /*
+         * get boot-time SMP configuration:
+         */
+        if (smp_found_config)
+                get_smp_config();
+#endif
+
+#ifdef CONFIG_X86_64
+        init_apic_mappings();
+        ioapic_init_mappings();
+#else
+# if defined(CONFIG_SMP) && defined(CONFIG_X86_PC)
+        if (def_to_bigsmp)
+                printk(KERN_WARNING "More than 8 CPUs detected and "
+                        "CONFIG_X86_PC cannot handle it.\nUse "
+                        "CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
+# endif
+#endif
+        kvm_guest_init();
+
+        e820_reserve_resources();
+        e820_mark_nosave_regions(max_low_pfn);
+
+#ifdef CONFIG_X86_32
+        request_resource(&iomem_resource, &video_ram_resource);
+#endif
+        reserve_standard_io_resources();
+
+        e820_setup_gap();
+
+#ifdef CONFIG_VT
+#if defined(CONFIG_VGA_CONSOLE)
+        if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
+                conswitchp = &vga_con;
+#elif defined(CONFIG_DUMMY_CONSOLE)
+        conswitchp = &dummy_con;
+#endif
+#endif
+}
+