diff options
| -rw-r--r-- | Documentation/kernel-parameters.txt | 2 | ||||
| -rw-r--r-- | Documentation/x86_64/boot-options.txt | 4 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 19 | ||||
| -rw-r--r-- | arch/x86/kernel/efi.c | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/efi_32.c | 25 | ||||
| -rw-r--r-- | arch/x86/kernel/efi_64.c | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_32.c | 6 |
7 files changed, 25 insertions, 45 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index b3f20beea41..e7910f8b4fc 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1169,6 +1169,8 @@ and is between 256 and 4096 characters. It is defined in the file nodisconnect [HW,SCSI,M68K] Disables SCSI disconnects. + noefi [X86-32,X86-64] Disable EFI runtime services support. + noexec [IA-64] noexec [X86-32,X86-64] diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt index 638bf46ca05..34abae4e944 100644 --- a/Documentation/x86_64/boot-options.txt +++ b/Documentation/x86_64/boot-options.txt @@ -306,8 +306,4 @@ Debugging newfallback: use new unwinder but fall back to old if it gets stuck (default) -EFI - - noefi Disable EFI support - Miscellaneous diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index d89b9452815..fa6fa52248d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -961,21 +961,18 @@ config MTRR config EFI def_bool n - prompt "Boot from EFI support" + prompt "EFI runtime service support" depends on ACPI ---help--- - This enables the kernel to boot on EFI platforms using - system configuration information passed to it from the firmware. - This also enables the kernel to use any EFI runtime services that are + This enables the kernel to use EFI runtime services that are available (such as the EFI variable services). - This option is only useful on systems that have EFI firmware - and will result in a kernel image that is ~8k larger. In addition, - you must use the latest ELILO loader available at - <http://elilo.sourceforge.net> in order to take advantage of - kernel initialization using EFI information (neither GRUB nor LILO know - anything about EFI). However, even with this option, the resultant - kernel should continue to boot on existing non-EFI platforms. + This option is only useful on systems that have EFI firmware. + In addition, you should use the latest ELILO loader available + at <http://elilo.sourceforge.net> in order to take advantage + of EFI runtime services. However, even with this option, the + resultant kernel should continue to boot on existing non-EFI + platforms. config IRQBALANCE def_bool y diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c index 0a61522e85c..2939b015c2e 100644 --- a/arch/x86/kernel/efi.c +++ b/arch/x86/kernel/efi.c @@ -55,6 +55,13 @@ struct efi_memory_map memmap; struct efi efi_phys __initdata; static efi_system_table_t efi_systab __initdata; +static int __init setup_noefi(char *arg) +{ + efi_enabled = 0; + return 0; +} +early_param("noefi", setup_noefi); + static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc) { return efi_call_virt2(get_time, tm, tc); diff --git a/arch/x86/kernel/efi_32.c b/arch/x86/kernel/efi_32.c index 30f93711628..afd2c3b039d 100644 --- a/arch/x86/kernel/efi_32.c +++ b/arch/x86/kernel/efi_32.c @@ -20,27 +20,15 @@ */ #include <linux/kernel.h> -#include <linux/init.h> -#include <linux/mm.h> #include <linux/types.h> -#include <linux/time.h> -#include <linux/spinlock.h> -#include <linux/bootmem.h> #include <linux/ioport.h> -#include <linux/module.h> #include <linux/efi.h> -#include <linux/kexec.h> -#include <asm/setup.h> #include <asm/io.h> #include <asm/page.h> #include <asm/pgtable.h> -#include <asm/processor.h> -#include <asm/desc.h> #include <asm/tlbflush.h> -#define PFX "EFI: " - /* * To make EFI call EFI runtime service in physical addressing mode we need * prelog/epilog before/after the invocation to disable interrupt, to @@ -49,16 +37,14 @@ */ static unsigned long efi_rt_eflags; -static DEFINE_SPINLOCK(efi_rt_lock); static pgd_t efi_bak_pg_dir_pointer[2]; -void efi_call_phys_prelog(void) __acquires(efi_rt_lock) +void efi_call_phys_prelog(void) { unsigned long cr4; unsigned long temp; struct desc_ptr gdt_descr; - spin_lock(&efi_rt_lock); local_irq_save(efi_rt_eflags); /* @@ -88,14 +74,14 @@ void efi_call_phys_prelog(void) __acquires(efi_rt_lock) /* * After the lock is released, the original page table is restored. */ - local_flush_tlb(); + __flush_tlb_all(); gdt_descr.address = __pa(get_cpu_gdt_table(0)); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr); } -void efi_call_phys_epilog(void) __releases(efi_rt_lock) +void efi_call_phys_epilog(void) { unsigned long cr4; struct desc_ptr gdt_descr; @@ -119,10 +105,9 @@ void efi_call_phys_epilog(void) __releases(efi_rt_lock) /* * After the lock is released, the original page table is restored. */ - local_flush_tlb(); + __flush_tlb_all(); local_irq_restore(efi_rt_eflags); - spin_unlock(&efi_rt_lock); } /* @@ -135,7 +120,7 @@ void __init efi_map_memmap(void) memmap.map = bt_ioremap((unsigned long) memmap.phys_map, (memmap.nr_map * memmap.desc_size)); if (memmap.map == NULL) - printk(KERN_ERR PFX "Could not remap the EFI memmap!\n"); + printk(KERN_ERR "Could not remap the EFI memmap!\n"); memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size); } diff --git a/arch/x86/kernel/efi_64.c b/arch/x86/kernel/efi_64.c index f2000dbc719..269de2e049a 100644 --- a/arch/x86/kernel/efi_64.c +++ b/arch/x86/kernel/efi_64.c @@ -40,13 +40,6 @@ static pgd_t save_pgd __initdata; static unsigned long efi_flags __initdata; -static int __init setup_noefi(char *arg) -{ - efi_enabled = 0; - return 0; -} -early_param("noefi", setup_noefi); - static void __init early_mapping_set_exec(unsigned long start, unsigned long end, int executable) diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index 2e805da337a..704550fdb84 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c @@ -648,9 +648,6 @@ void __init setup_arch(char **cmdline_p) printk(KERN_INFO "BIOS-provided physical RAM map:\n"); print_memory_map(memory_setup()); - if (efi_enabled) - efi_init(); - copy_edd(); if (!boot_params.hdr.root_flags) @@ -677,6 +674,9 @@ void __init setup_arch(char **cmdline_p) strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); *cmdline_p = command_line; + if (efi_enabled) + efi_init(); + max_low_pfn = setup_memory(); #ifdef CONFIG_VMI |