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/* memory.h - describe the memory map */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_MEMORY_CPU_HEADER
#define GRUB_MEMORY_CPU_HEADER 1
#define PAGE_SHIFT 12
/* The flag for protected mode. */
#define GRUB_MEMORY_CPU_CR0_PE_ON 0x1
#define GRUB_MEMORY_CPU_CR4_PAE_ON 0x00000020
#define GRUB_MEMORY_CPU_CR4_PSE_ON 0x00000010
#define GRUB_MEMORY_CPU_CR0_PAGING_ON 0x80000000
#define GRUB_MEMORY_CPU_AMD64_MSR 0xc0000080
#define GRUB_MEMORY_CPU_AMD64_MSR_ON 0x00000100
#define GRUB_MEMORY_MACHINE_UPPER_START 0x100000 /* 1 MiB */
#define GRUB_MEMORY_MACHINE_LOWER_SIZE GRUB_MEMORY_MACHINE_UPPER_START
/* Some PTE definitions. */
#define GRUB_PAGE_PRESENT 0x00000001
#define GRUB_PAGE_RW 0x00000002
#define GRUB_PAGE_USER 0x00000004
#ifndef ASM_FILE
#define GRUB_MMAP_MALLOC_LOW 1
#include <grub/types.h>
struct grub_e820_mmap_entry
{
grub_uint64_t addr;
grub_uint64_t len;
grub_uint32_t type;
} GRUB_PACKED;
grub_uint64_t grub_mmap_get_upper (void);
grub_uint64_t grub_mmap_get_lower (void);
grub_uint64_t grub_mmap_get_post64 (void);
typedef grub_addr_t grub_phys_addr_t;
static inline grub_phys_addr_t
grub_vtop (void *a)
{
return (grub_phys_addr_t) a;
}
static inline void *
grub_map_memory (grub_phys_addr_t a, grub_size_t size __attribute__ ((unused)))
{
return (void *) a;
}
static inline void
grub_unmap_memory (void *a __attribute__ ((unused)),
grub_size_t size __attribute__ ((unused)))
{
}
#endif
#endif /* ! GRUB_MEMORY_CPU_HEADER */
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