forked from Minki/linux
x86: merge 64bit setup_arch into setup_32
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu
Ingo Molnar
parent
46d671b525
commit
76934ed4b3
@ -372,26 +372,38 @@ static void __init reserve_initrd(void)
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* global efi_enabled. This allows the same kernel image to be used on existing
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* systems (with a traditional BIOS) as well as on EFI systems.
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*/
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/*
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* setup_arch - architecture-specific boot-time initializations
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*
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* Note: On x86_64, fixmaps are ready for use even before this 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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#ifdef CONFIG_X86_32
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memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
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pre_setup_arch_hook();
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early_cpu_init();
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early_ioremap_init();
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reserve_setup_data();
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#else
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printk(KERN_INFO "Command line: %s\n", boot_command_line);
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#endif
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ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev);
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screen_info = boot_params.screen_info;
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edid_info = boot_params.edid_info;
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#ifdef CONFIG_X86_32
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apm_info.bios = boot_params.apm_bios_info;
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ist_info = boot_params.ist_info;
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saved_video_mode = boot_params.hdr.vid_mode;
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if( boot_params.sys_desc_table.length != 0 ) {
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if (boot_params.sys_desc_table.length != 0) {
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set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2);
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machine_id = boot_params.sys_desc_table.table[0];
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machine_submodel_id = boot_params.sys_desc_table.table[1];
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BIOS_revision = boot_params.sys_desc_table.table[2];
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}
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#endif
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saved_video_mode = boot_params.hdr.vid_mode;
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bootloader_type = boot_params.hdr.type_of_loader;
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#ifdef CONFIG_BLK_DEV_RAM
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@ -401,7 +413,12 @@ void __init setup_arch(char **cmdline_p)
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#endif
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#ifdef CONFIG_EFI
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if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
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"EL32", 4)) {
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#ifdef CONFIG_X86_32
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"EL32",
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#else
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"EL64",
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#endif
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4)) {
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efi_enabled = 1;
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efi_reserve_early();
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}
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@ -417,7 +434,11 @@ void __init setup_arch(char **cmdline_p)
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init_mm.start_code = (unsigned long) _text;
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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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#ifdef CONFIG_X86_32
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init_mm.brk = init_pg_tables_end + PAGE_OFFSET;
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#else
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init_mm.brk = (unsigned long) &_end;
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#endif
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code_resource.start = virt_to_phys(_text);
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code_resource.end = virt_to_phys(_etext)-1;
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@ -426,6 +447,9 @@ void __init setup_arch(char **cmdline_p)
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bss_resource.start = virt_to_phys(&__bss_start);
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bss_resource.end = virt_to_phys(&__bss_stop)-1;
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#ifdef CONFIG_X86_64
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early_cpu_init();
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#endif
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strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
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*cmdline_p = command_line;
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@ -433,16 +457,27 @@ void __init setup_arch(char **cmdline_p)
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parse_early_param();
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if (acpi_mps_check()){
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if (acpi_mps_check()) {
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#ifdef CONFIG_X86_LOCAL_APIC
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#ifdef CONFIG_X86_32
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enable_local_apic = -1;
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#else
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disable_apic = 1;
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#endif
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#endif
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clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
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}
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finish_e820_parsing();
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#ifdef CONFIG_X86_32
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probe_roms();
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#else
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# ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
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if (init_ohci1394_dma_early)
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init_ohci1394_dma_on_all_controllers();
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# endif
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#endif
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/* after parse_early_param, so could debug it */
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insert_resource(&iomem_resource, &code_resource);
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@ -452,6 +487,7 @@ void __init setup_arch(char **cmdline_p)
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if (efi_enabled)
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efi_init();
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#ifdef CONFIG_X86_32
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if (ppro_with_ram_bug()) {
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e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
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E820_RESERVED);
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@ -459,6 +495,9 @@ void __init setup_arch(char **cmdline_p)
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printk(KERN_INFO "fixed physical RAM map:\n");
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e820_print_map("bad_ppro");
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}
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#else
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early_gart_iommu_check();
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#endif
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e820_register_active_regions(0, 0, -1UL);
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/*
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@ -477,14 +516,32 @@ void __init setup_arch(char **cmdline_p)
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max_pfn = e820_end_of_ram();
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}
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#ifdef CONFIG_X86_32
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/* max_low_pfn get updated here */
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find_low_pfn_range();
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#else
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num_physpages = max_pfn;
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check_efer();
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/* How many end-of-memory variables you have, grandma! */
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/* need this before calling reserve_initrd */
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max_low_pfn = max_pfn;
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high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
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#endif
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/* max_pfn_mapped is updated here */
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#ifdef CONFIG_X86_64
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max_pfn_mapped =
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#endif
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max_pfn_mapped = init_memory_mapping(0, (max_low_pfn << PAGE_SHIFT));
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reserve_initrd();
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#ifdef CONFIG_X86_64
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vsmp_init();
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#endif
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dmi_scan_machine();
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io_delay_init();
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@ -494,6 +551,11 @@ void __init setup_arch(char **cmdline_p)
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*/
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acpi_boot_table_init();
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#ifdef CONFIG_X86_64
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/* Remove active ranges so rediscovery with NUMA-awareness happens */
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remove_all_active_ranges();
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#endif
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#ifdef CONFIG_ACPI_NUMA
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/*
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* Parse SRAT to discover nodes.
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@ -503,13 +565,18 @@ void __init setup_arch(char **cmdline_p)
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initmem_init(0, max_pfn);
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#ifdef CONFIG_X86_64
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dma32_reserve_bootmem();
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#endif
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#ifdef CONFIG_ACPI_SLEEP
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/*
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* Reserve low memory region for sleep support.
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*/
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acpi_reserve_bootmem();
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#endif
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#ifdef CONFIG_X86_FIND_SMP_CONFIG
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#if defined(CONFIG_X86_FIND_SMP_CONFIG) && defined(CONFIG_X86_32) || \
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defined(CONFIG_X86_MPPARSE) && defined(CONFIG_X86_64)
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/*
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* Find and reserve possible boot-time SMP configuration:
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*/
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@ -523,7 +590,7 @@ void __init setup_arch(char **cmdline_p)
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kvmclock_init();
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#endif
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#ifdef CONFIG_VMI
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#if defined(CONFIG_VMI) && defined(CONFIG_X86_32)
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/*
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* Must be after max_low_pfn is determined, and before kernel
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* pagetables are setup.
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@ -533,11 +600,15 @@ void __init setup_arch(char **cmdline_p)
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paging_init();
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#ifdef CONFIG_X86_64
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map_vsyscall();
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#endif
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/*
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* NOTE: On x86-32, only from this point on, fixmaps are ready for use.
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*/
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#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
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#if defined(CONFIG_PROVIDE_OHCI1394_DMA_INIT) && defined(CONFIG_X86_32)
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if (init_ohci1394_dma_early)
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init_ohci1394_dma_on_all_controllers();
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#endif
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@ -553,6 +624,10 @@ void __init setup_arch(char **cmdline_p)
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*/
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acpi_boot_init();
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#ifdef CONFIG_X86_64
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init_cpu_to_node();
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#endif
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#if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS)
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/*
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* get boot-time SMP configuration:
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@ -560,18 +635,26 @@ void __init setup_arch(char **cmdline_p)
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if (smp_found_config)
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get_smp_config();
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#endif
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#if defined(CONFIG_SMP) && defined(CONFIG_X86_PC)
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#ifdef CONFIG_X86_64
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init_apic_mappings();
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ioapic_init_mappings();
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#else
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# if defined(CONFIG_SMP) && defined(CONFIG_X86_PC)
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if (def_to_bigsmp)
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printk(KERN_WARNING "More than 8 CPUs detected and "
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"CONFIG_X86_PC cannot handle it.\nUse "
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"CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
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# endif
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#endif
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kvm_guest_init();
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e820_reserve_resources();
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e820_mark_nosave_regions(max_low_pfn);
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#ifdef CONFIG_X86_32
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request_resource(&iomem_resource, &video_ram_resource);
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#endif
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reserve_standard_io_resources();
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e820_setup_gap();
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