diff options
Diffstat (limited to 'include/grub/i386/memory_raw.h')
| -rw-r--r-- | include/grub/i386/memory_raw.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/grub/i386/memory_raw.h b/include/grub/i386/memory_raw.h new file mode 100644 index 0000000..1292ba7 --- /dev/null +++ b/include/grub/i386/memory_raw.h @@ -0,0 +1,58 @@ +/* memory_raw.h - describe the memory map on qemu/coreboot/multiboot/pc */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2002,2007,2008,2009,2013 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_RAW_HEADER +#define GRUB_MEMORY_CPU_RAW_HEADER 1 + +/* 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 0x9000 + +/* 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 0xf000 + +/* 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 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 + +#endif |