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Diffstat (limited to 'include/grub/i386/pc/memory.h')
| -rw-r--r-- | include/grub/i386/pc/memory.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/include/grub/i386/pc/memory.h b/include/grub/i386/pc/memory.h new file mode 100644 index 0000000..401c837 --- /dev/null +++ b/include/grub/i386/pc/memory.h @@ -0,0 +1,97 @@ +/* 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_MACHINE_HEADER +#define GRUB_MEMORY_MACHINE_HEADER 1 + +#include <grub/symbol.h> +#ifndef ASM_FILE +#include <grub/types.h> +#include <grub/err.h> +#include <grub/memory.h> +#endif + +#include <grub/i386/memory.h> + +#include <grub/offsets.h> + +/* The scratch buffer used in real mode code. */ +#define GRUB_MEMORY_MACHINE_SCRATCH_ADDR 0x68000 +#define GRUB_MEMORY_MACHINE_SCRATCH_SEG (GRUB_MEMORY_MACHINE_SCRATCH_ADDR >> 4) +#define GRUB_MEMORY_MACHINE_SCRATCH_SIZE 0x10000 + +/* The real mode stack. */ +#define GRUB_MEMORY_MACHINE_REAL_STACK (0x2000 - 0x10) + +/* The size of the protect mode stack. */ +#define GRUB_MEMORY_MACHINE_PROT_STACK_SIZE 0x8000 + +/* The protected mode stack. */ +#define GRUB_MEMORY_MACHINE_PROT_STACK \ + (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + GRUB_MEMORY_MACHINE_SCRATCH_SIZE \ + + GRUB_MEMORY_MACHINE_PROT_STACK_SIZE - 0x10) + +/* The memory area where GRUB uses its own purpose. This part is not added + into free memory for dynamic allocations. */ +#define GRUB_MEMORY_MACHINE_RESERVED_START \ + GRUB_MEMORY_MACHINE_SCRATCH_ADDR +#define GRUB_MEMORY_MACHINE_RESERVED_END \ + (GRUB_MEMORY_MACHINE_PROT_STACK + 0x10) + +/* The area where GRUB is decompressed at early startup. */ +#define GRUB_MEMORY_MACHINE_DECOMPRESSION_ADDR 0x100000 + +/* The address of a partition table passed to another boot loader. */ +#define GRUB_MEMORY_MACHINE_PART_TABLE_ADDR 0x7be + +/* The address where another boot loader is loaded. */ +#define GRUB_MEMORY_MACHINE_BOOT_LOADER_ADDR 0x7c00 + +/* The code segment of the protected mode. */ +#define GRUB_MEMORY_MACHINE_PROT_MODE_CSEG 0x8 + +/* The data segment of the protected mode. */ +#define GRUB_MEMORY_MACHINE_PROT_MODE_DSEG 0x10 + +/* The code segment of the pseudo real mode. */ +#define GRUB_MEMORY_MACHINE_PSEUDO_REAL_CSEG 0x18 + +/* The data segment of the pseudo real mode. */ +#define GRUB_MEMORY_MACHINE_PSEUDO_REAL_DSEG 0x20 + +#define GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR 0x400 + +#ifndef ASM_FILE + +/* See http://heim.ifi.uio.no/~stanisls/helppc/bios_data_area.html for a + description of the BIOS Data Area layout. */ +struct grub_machine_bios_data_area +{ + grub_uint8_t unused1[0x17]; + grub_uint8_t keyboard_flag_lower; /* 0x17 */ + grub_uint8_t unused2[0xf0 - 0x18]; +}; + +grub_err_t grub_machine_mmap_register (grub_uint64_t start, grub_uint64_t size, + int type, int handle); +grub_err_t grub_machine_mmap_unregister (int handle); + +#endif + +#endif /* ! GRUB_MEMORY_MACHINE_HEADER */ |