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9862b24121
Add grub_relocator64_efi relocator. It will be used on EFI 64-bit platforms when multiboot2 compatible image requests MULTIBOOT_TAG_TYPE_EFI_BS. Relocator will set lower parts of %rax and %rbx accordingly to multiboot2 specification. On the other hand processor mode, just before jumping into loaded image, will be set accordingly to Unified Extensible Firmware Interface Specification, Version 2.4 Errata B, section 2.3.4, x64 Platforms, boot services. This way loaded image will be able to use EFI boot services without any issues. Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_RELOCATOR_CPU_HEADER
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#define GRUB_RELOCATOR_CPU_HEADER 1
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#include <grub/types.h>
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#include <grub/err.h>
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#include <grub/relocator.h>
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struct grub_relocator32_state
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{
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grub_uint32_t esp;
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grub_uint32_t ebp;
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grub_uint32_t eax;
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grub_uint32_t ebx;
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grub_uint32_t ecx;
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grub_uint32_t edx;
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grub_uint32_t eip;
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grub_uint32_t esi;
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grub_uint32_t edi;
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};
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struct grub_relocator16_state
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{
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grub_uint16_t cs;
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grub_uint16_t ds;
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grub_uint16_t es;
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grub_uint16_t fs;
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grub_uint16_t gs;
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grub_uint16_t ss;
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grub_uint16_t sp;
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grub_uint16_t ip;
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grub_uint32_t ebx;
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grub_uint32_t edx;
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grub_uint32_t esi;
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grub_uint32_t ebp;
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int a20;
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};
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struct grub_relocator64_state
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{
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grub_uint64_t rsp;
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grub_uint64_t rax;
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grub_uint64_t rbx;
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grub_uint64_t rcx;
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grub_uint64_t rdx;
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grub_uint64_t rip;
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grub_uint64_t rsi;
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grub_addr_t cr3;
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};
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#ifdef GRUB_MACHINE_EFI
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#ifdef __x86_64__
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struct grub_relocator64_efi_state
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{
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grub_uint64_t rax;
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grub_uint64_t rbx;
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grub_uint64_t rcx;
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grub_uint64_t rdx;
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grub_uint64_t rip;
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grub_uint64_t rsi;
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};
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#endif
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#endif
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grub_err_t grub_relocator16_boot (struct grub_relocator *rel,
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struct grub_relocator16_state state);
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grub_err_t grub_relocator32_boot (struct grub_relocator *rel,
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struct grub_relocator32_state state,
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int avoid_efi_bootservices);
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grub_err_t grub_relocator64_boot (struct grub_relocator *rel,
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struct grub_relocator64_state state,
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grub_addr_t min_addr, grub_addr_t max_addr);
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#ifdef GRUB_MACHINE_EFI
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#ifdef __x86_64__
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grub_err_t grub_relocator64_efi_boot (struct grub_relocator *rel,
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struct grub_relocator64_efi_state state);
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#endif
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#endif
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#endif /* ! GRUB_RELOCATOR_CPU_HEADER */
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