5b83683f32
This patch adds basic runtime services support for EFI x86_64 system. The main file of the patch is the addition of efi_64.c for x86_64. This file is modeled after the EFI IA32 avatar. EFI runtime services initialization are implemented in efi_64.c. Some x86_64 specifics are worth noting here. On x86_64, parameters passed to EFI firmware services need to follow the EFI calling convention. For this purpose, a set of functions named efi_call<x> (<x> is the number of parameters) are implemented. EFI function calls are wrapped before calling the firmware service. The duplicated code between efi_32.c and efi_64.c is placed in efi.c to remove them from efi_32.c. Signed-off-by: Chandramouli Narayanan <mouli@linux.intel.com> Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
#ifndef _ASM_X86_EFI_H
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#define _ASM_X86_EFI_H
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#ifdef CONFIG_X86_32
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#else /* !CONFIG_X86_32 */
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#define MAX_EFI_IO_PAGES 100
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extern u64 efi_call0(void *fp);
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extern u64 efi_call1(void *fp, u64 arg1);
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extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
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extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3);
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extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4);
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extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3,
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u64 arg4, u64 arg5);
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extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
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u64 arg4, u64 arg5, u64 arg6);
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#define efi_call_phys0(f) \
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efi_call0((void *)(f))
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#define efi_call_phys1(f, a1) \
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efi_call1((void *)(f), (u64)(a1))
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#define efi_call_phys2(f, a1, a2) \
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efi_call2((void *)(f), (u64)(a1), (u64)(a2))
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#define efi_call_phys3(f, a1, a2, a3) \
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efi_call3((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3))
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#define efi_call_phys4(f, a1, a2, a3, a4) \
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efi_call4((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3), \
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(u64)(a4))
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#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
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efi_call5((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3), \
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(u64)(a4), (u64)(a5))
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#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
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efi_call6((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3), \
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(u64)(a4), (u64)(a5), (u64)(a6))
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#define efi_call_virt0(f) \
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efi_call0((void *)(efi.systab->runtime->f))
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#define efi_call_virt1(f, a1) \
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efi_call1((void *)(efi.systab->runtime->f), (u64)(a1))
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#define efi_call_virt2(f, a1, a2) \
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efi_call2((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2))
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#define efi_call_virt3(f, a1, a2, a3) \
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efi_call3((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
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(u64)(a3))
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#define efi_call_virt4(f, a1, a2, a3, a4) \
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efi_call4((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
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(u64)(a3), (u64)(a4))
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#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
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efi_call5((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
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(u64)(a3), (u64)(a4), (u64)(a5))
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#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
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efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
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(u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
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#define efi_early_ioremap(addr, size) early_ioremap(addr, size)
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#define efi_early_iounmap(vaddr, size) early_iounmap(vaddr, size)
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extern void *efi_ioremap(unsigned long offset, unsigned long size);
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extern int efi_time;
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#endif /* CONFIG_X86_32 */
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extern void efi_reserve_bootmem(void);
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extern void efi_call_phys_prelog(void);
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extern void efi_call_phys_epilog(void);
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extern void runtime_code_page_mkexec(void);
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#endif
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