From 5b83683f32b113d07edfb67a33ce389fc624423d Mon Sep 17 00:00:00 2001 From: "Huang, Ying" Date: Wed, 30 Jan 2008 13:31:19 +0100 Subject: x86: EFI runtime service support 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 ( 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 Signed-off-by: Huang Ying Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/bootparam.h | 5 ++-- include/asm-x86/efi.h | 70 +++++++++++++++++++++++++++++++++++++++++++++ include/asm-x86/fixmap_64.h | 3 ++ 3 files changed, 76 insertions(+), 2 deletions(-) create mode 100644 include/asm-x86/efi.h (limited to 'include/asm-x86') diff --git a/include/asm-x86/bootparam.h b/include/asm-x86/bootparam.h index 19f3ddf2df4b..51151356840f 100644 --- a/include/asm-x86/bootparam.h +++ b/include/asm-x86/bootparam.h @@ -54,13 +54,14 @@ struct sys_desc_table { }; struct efi_info { - __u32 _pad1; + __u32 efi_loader_signature; __u32 efi_systab; __u32 efi_memdesc_size; __u32 efi_memdesc_version; __u32 efi_memmap; __u32 efi_memmap_size; - __u32 _pad2[2]; + __u32 efi_systab_hi; + __u32 efi_memmap_hi; }; /* The so-called "zeropage" */ diff --git a/include/asm-x86/efi.h b/include/asm-x86/efi.h new file mode 100644 index 000000000000..1459d3d58653 --- /dev/null +++ b/include/asm-x86/efi.h @@ -0,0 +1,70 @@ +#ifndef _ASM_X86_EFI_H +#define _ASM_X86_EFI_H + +#ifdef CONFIG_X86_32 +#else /* !CONFIG_X86_32 */ + +#define MAX_EFI_IO_PAGES 100 + +extern u64 efi_call0(void *fp); +extern u64 efi_call1(void *fp, u64 arg1); +extern u64 efi_call2(void *fp, u64 arg1, u64 arg2); +extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3); +extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4); +extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3, + u64 arg4, u64 arg5); +extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3, + u64 arg4, u64 arg5, u64 arg6); + +#define efi_call_phys0(f) \ + efi_call0((void *)(f)) +#define efi_call_phys1(f, a1) \ + efi_call1((void *)(f), (u64)(a1)) +#define efi_call_phys2(f, a1, a2) \ + efi_call2((void *)(f), (u64)(a1), (u64)(a2)) +#define efi_call_phys3(f, a1, a2, a3) \ + efi_call3((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3)) +#define efi_call_phys4(f, a1, a2, a3, a4) \ + efi_call4((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3), \ + (u64)(a4)) +#define efi_call_phys5(f, a1, a2, a3, a4, a5) \ + efi_call5((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3), \ + (u64)(a4), (u64)(a5)) +#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \ + efi_call6((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3), \ + (u64)(a4), (u64)(a5), (u64)(a6)) + +#define efi_call_virt0(f) \ + efi_call0((void *)(efi.systab->runtime->f)) +#define efi_call_virt1(f, a1) \ + efi_call1((void *)(efi.systab->runtime->f), (u64)(a1)) +#define efi_call_virt2(f, a1, a2) \ + efi_call2((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2)) +#define efi_call_virt3(f, a1, a2, a3) \ + efi_call3((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \ + (u64)(a3)) +#define efi_call_virt4(f, a1, a2, a3, a4) \ + efi_call4((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \ + (u64)(a3), (u64)(a4)) +#define efi_call_virt5(f, a1, a2, a3, a4, a5) \ + efi_call5((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \ + (u64)(a3), (u64)(a4), (u64)(a5)) +#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \ + efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \ + (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6)) + +#define efi_early_ioremap(addr, size) early_ioremap(addr, size) +#define efi_early_iounmap(vaddr, size) early_iounmap(vaddr, size) + +extern void *efi_ioremap(unsigned long offset, unsigned long size); + +extern int efi_time; + +#endif /* CONFIG_X86_32 */ + +extern void efi_reserve_bootmem(void); +extern void efi_call_phys_prelog(void); +extern void efi_call_phys_epilog(void); +extern void runtime_code_page_mkexec(void); + +#endif diff --git a/include/asm-x86/fixmap_64.h b/include/asm-x86/fixmap_64.h index cdfbe4a6ae6f..8f44782e5fe5 100644 --- a/include/asm-x86/fixmap_64.h +++ b/include/asm-x86/fixmap_64.h @@ -15,6 +15,7 @@ #include #include #include +#include /* * Here we define all the compile-time 'special' virtual @@ -41,6 +42,8 @@ enum fixed_addresses { FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */ FIX_IO_APIC_BASE_0, FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS-1, + FIX_EFI_IO_MAP_LAST_PAGE, + FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE+MAX_EFI_IO_PAGES-1, __end_of_fixed_addresses }; -- cgit v1.2.3