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/* 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
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