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kernel_map.h

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/*!     \file include/kernel/kernel_map.h
 *      \brief The memory map of the kernel.
 *      \author Andrea Righi <drizzt@inwind.it>
 *      \date Last update: 2003-11-05
 *      \note Copyright (&copy;) 2003 Andrea Righi
 */

#ifndef KERNEL_MAP_H
#define KERNEL_MAP_H

// --- Physical address space ----------------------------------------- //

//! Physiscal address of the kernel (don't touch!!!).
#define K_PHYS_ADDR     0x100000
//! Kernel Page Directory (don't touch!!!).
#define K_PDE           0x1000
//! Kernel Page Table for virtual space (don't touch!!!).
#define K_PTE           0x2000

//! DMA memory area start address (don't touch!!!).
#define DMA_MEMORY_START        0x3000
//! DMA memory area end address (don't touch!!!).
#define DMA_MEMORY_END          0x01000000

// --- V86-required address space ------------------------------------- //

//! BIOS Interrupt Vector Table (IVT) start address.
#define BIOS_IVT_START          0x00000000
//! BIOS Interrupt Vector Table (IVT) end address.
#define BIOS_IVT_END            0x00001000

//! Video Buffer area start address.
#define VIDEO_BUF_START         0x000A0000
//! Video Buffer area end address.
#define VIDEO_BUF_END           0x000C0000

//! ROM BIOS memory start address.
#define BIOS_ROM_START          0x000C0000
//! ROM BIOS memory end address.
#define BIOS_ROM_END            0x00100000

// --- Kernel virtual address space ----------------------------------- //

//! Kernel virtual start address.
//! \note Must be (PAGE_SIZE*1024) aligned!!!
#define K_VIR_START             0xC0000000

//! Kernel heap start address.
#define K_HEAP_START            0xD0000000
//! Kernel heap end address.
#define K_HEAP_END              0xE0000000

// --- Drivers memory area -------------------------------------------- //
#define D_MEM_START             0xE0000000
#define D_MEM_END               0xEF000000

//! Some physical memory (first 16MB of physical memory are mapped here)
//! start address.
#define PHYS_MEM_START          0xEF000000
//! Some physical memory (first 16MB of physical memory are mapped here)
//! end address.
#define PHYS_MEM_END            0xF0000000

//! Temporary memory area start address.
#define K_MEM_TEMP_START        0xF0000000
//! Temporary memory area end address.
#define K_MEM_TEMP_END          0xFFC00000

//! Page tables area start address.
#define PAGE_TABLE_MAP          (0xFFC00000)
//! Page tables area end address.
#define PAGE_DIR_MAP            (0xFFC00000 + (PAGE_TABLE_MAP / (1024)))

#endif

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