memory_map.h

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// Copyright (c) 2014, 임경현 (dlarudgus20)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
//   list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef MEMORY_MAP_H_
#define MEMORY_MAP_H_

// 참조: misc/docs/memory_map.txt
// 이곳의 address는 특별한 언급이 없는 한 전부 logical address입니다.

#define MINIMAL_REQUIRE_MEMORY 0x02000000 // 32MB

#define KERNEL_BASE_ADDRESS 0xfe000000

#define KERNEL_PHY_BASE_ADDR 0x00100000

#define KERNEL_PAGE_DIR_NUM 0x3f8

#define KERNEL_PAGE_DIR_ENT_COUNT (0x400 - KERNEL_PAGE_DIR_NUM)

#define PAGE_DIRECTORY_ADDRESS 0xfe200000

#define PAGE_TABLE_ADDRESS 0xfe201000

#define PAGE_TABLE_OF_SHARED_MEMORY 0xbf800

#define PAGE_TABLE_ADDR_OF_SHARED_MEMORY (PAGE_TABLE_ADDRESS + PAGE_TABLE_OF_SHARED_MEMORY * 4)

#define GDT_TABLE_ADDRESS 0xfe601000

#define IDT_TABLE_ADDRESS 0xfe611000

#define TASKSTRUCT_ADDRESS 0xfe611800

#define COSHELL_TASK_STACK_TOP 0xfe780000

#define IDLE_TASK_STACK_TOP 0xfe800000


#define DYN_MEMORY_START_ADDRESS 0x00100000

#define IOMAP_MEMORY_START_ADDRESS 0xbf800000

#define DYN_MEMORY_METADATA_ADDR 0xfffcf000

#define DYN_MEMORY_PHYSICAL_ADDRESS 0x00900000


static inline uint32_t ckDynMemLogicalToPhysical(uint32_t address)
{
    return address - DYN_MEMORY_START_ADDRESS + DYN_MEMORY_PHYSICAL_ADDRESS;
}
static inline uint32_t ckDynMemPhysicalToLogical(uint32_t address)
{
    return address + DYN_MEMORY_START_ADDRESS - DYN_MEMORY_PHYSICAL_ADDRESS;
}

#endif /* MEMORY_MAP_H_ */