From 76934ed4b33b65096296d3e7b3c046fd020019fc Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Wed, 25 Jun 2008 17:52:35 -0700 Subject: [PATCH] x86: merge 64bit setup_arch into setup_32 Signed-off-by: Yinghai Lu Signed-off-by: Ingo Molnar --- arch/x86/kernel/setup_32.c | 99 +++++++++++++++++++++++++++++++++++--- 1 file changed, 91 insertions(+), 8 deletions(-) diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index 0b69483b0c3d..f3177bae300d 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c @@ -372,26 +372,38 @@ static void __init reserve_initrd(void) * 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; - saved_video_mode = boot_params.hdr.vid_mode; - if( boot_params.sys_desc_table.length != 0 ) { + 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 @@ -401,7 +413,12 @@ void __init setup_arch(char **cmdline_p) #endif #ifdef CONFIG_EFI if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, - "EL32", 4)) { +#ifdef CONFIG_X86_32 + "EL32", +#else + "EL64", +#endif + 4)) { efi_enabled = 1; efi_reserve_early(); } @@ -417,7 +434,11 @@ void __init setup_arch(char **cmdline_p) 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; @@ -426,6 +447,9 @@ void __init setup_arch(char **cmdline_p) 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; @@ -433,16 +457,27 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); - if (acpi_mps_check()){ + 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); @@ -452,6 +487,7 @@ void __init setup_arch(char **cmdline_p) if (efi_enabled) efi_init(); +#ifdef CONFIG_X86_32 if (ppro_with_ram_bug()) { e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, E820_RESERVED); @@ -459,6 +495,9 @@ void __init setup_arch(char **cmdline_p) 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); /* @@ -477,14 +516,32 @@ void __init setup_arch(char **cmdline_p) 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 */ +#ifdef CONFIG_X86_64 + max_pfn_mapped = +#endif 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(); @@ -494,6 +551,11 @@ void __init setup_arch(char **cmdline_p) */ 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. @@ -503,13 +565,18 @@ void __init setup_arch(char **cmdline_p) 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 -#ifdef CONFIG_X86_FIND_SMP_CONFIG +#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: */ @@ -523,7 +590,7 @@ void __init setup_arch(char **cmdline_p) kvmclock_init(); #endif -#ifdef CONFIG_VMI +#if defined(CONFIG_VMI) && defined(CONFIG_X86_32) /* * Must be after max_low_pfn is determined, and before kernel * pagetables are setup. @@ -533,11 +600,15 @@ void __init setup_arch(char **cmdline_p) paging_init(); +#ifdef CONFIG_X86_64 + map_vsyscall(); +#endif + /* * NOTE: On x86-32, only from this point on, fixmaps are ready for use. */ -#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT +#if defined(CONFIG_PROVIDE_OHCI1394_DMA_INIT) && defined(CONFIG_X86_32) if (init_ohci1394_dma_early) init_ohci1394_dma_on_all_controllers(); #endif @@ -553,6 +624,10 @@ void __init setup_arch(char **cmdline_p) */ 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: @@ -560,18 +635,26 @@ void __init setup_arch(char **cmdline_p) if (smp_found_config) get_smp_config(); #endif -#if defined(CONFIG_SMP) && defined(CONFIG_X86_PC) + +#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(); -- GitLab