diff options
Diffstat (limited to 'arch/x86/kernel/setup_64.c')
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 8dd110d93e7..90b8bb4748b 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -30,6 +30,7 @@ #include <linux/crash_dump.h> #include <linux/root_dev.h> #include <linux/pci.h> +#include <linux/efi.h> #include <linux/acpi.h> #include <linux/kallsyms.h> #include <linux/edd.h> @@ -299,6 +300,11 @@ void __init setup_arch(char **cmdline_p) 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, + "EL64", 4)) + efi_enabled = 1; +#endif ARCH_SETUP @@ -341,6 +347,8 @@ void __init setup_arch(char **cmdline_p) discover_ebda(); init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT)); + if (efi_enabled) + efi_init(); dmi_scan_machine(); @@ -414,6 +422,12 @@ void __init setup_arch(char **cmdline_p) */ acpi_reserve_bootmem(); #endif + + if (efi_enabled) { + efi_map_memmap(); + efi_reserve_bootmem(); + } + /* * Find and reserve possible boot-time SMP configuration: */ @@ -479,7 +493,8 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_VT #if defined(CONFIG_VGA_CONSOLE) - conswitchp = &vga_con; + if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) + conswitchp = &vga_con; #elif defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif |