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/*

 * Mock-up memory layout definitions for test purposes.

 *

 * Copyright (C) 2007 Bahadir Balban

 *

 */

#ifndef __BASICLAYOUT_H__

#define __BASICLAYOUT_H__

#ifndef __ASSEMBLY__

#include INC_GLUE(memory.h)

#endif

#include INC_PLAT(offsets.h)

#define RESERVED_AREA_START     0x0

#define RESERVED_AREA_END       0x00400000

#define RESERVED_AREA_SIZE      (RESERVED_AREA_END - RESERVED_AREA_START)

#define RESERVED_AREA_SECTIONS  (RESERVED_AREA_SIZE / ARM_SECTION_SIZE)

/* 0x00400000 */

#define USER_AREA_START         0x00400000

#define USER_AREA_END           0xF0000000

#define USER_AREA_SIZE          (USER_AREA_END - USER_AREA_START)

#define USER_AREA_SECTIONS      (USER_AREA_SIZE / ARM_SECTION_SIZE)

/* 0xf0000000 */

#define KERNEL_AREA_START       0xF0000000

#define KERNEL_AREA_END         0xF4000000

#define KERNEL_AREA_SIZE        (KERNEL_AREA_END - KERNEL_AREA_START)

#define KERNEL_AREA_SECTIONS    (KERNEL_AREA_SIZE / ARM_SECTION_SIZE)

/* Kernel offset is taken as virtual memory base */

#define VIRT_ADDR_BASE          KERNEL_AREA_START

/* 0xf4000000 */

#define UNCACHE_AREA_START      0xF4000000

#define UNCACHE_AREA_END        0xF8000000

#define UNCACHE_AREA_SIZE       (UNCACHE_AREA_END - UNCACHE_AREA_START)

#define UNCACHE_AREA_SECTIONS   (UNCACHE_AREA_SIZE / ARM_SECTION_SIZE)

/* The page tables are the main clients of uncached virtual memory */

#define PGTABLE_ADDR_BASE       UNCACHE_AREA_START

/* 0xf8000000 */

#define VAR_AREA_START          0xF8000000

#define VAR_AREA_END            0xF9000000

#define VAR_AREA_SIZE           (VAR_AREA_END - VAR_AREA_START)

#define VAR_AREA_SECTIONS       (VAR_AREA_SIZE / ARM_SECTION_SIZE)

/* 0xf9000000 */

#define IO_AREA_START           0xF9000000

#define IO_AREA_END             0xFF000000

#define IO_AREA_SIZE            (IO_AREA_END - IO_AREA_START)

#define IO_AREA_SECTIONS        (IO_AREA_SIZE / ARM_SECTION_SIZE)

/* 0xff000000 */

#define MISC_AREA_START         0xFF000000

#define MISC_AREA_END           0xFFF00000

#define MISC_AREA_SIZE          (MISC_AREA_END - MISC_AREA_START)

#define MISC_AREA_SECTIONS      (MISC_AREA_SIZE / ARM_SECTION_SIZE)

/* First page in MISC area is used for KIP/UTCB reference page */

#define USER_KIP_PAGE           MISC_AREA_START

/* 0xfff00000 */

#define EXCPT_AREA_START        0xFFF00000

#define EXCPT_AREA_END          (EXCPT_AREA_START + ARM_SECTION_SIZE)

#define EXCPT_AREA_SIZE         (EXCPT_AREA_END - EXCPT_AREA_START)

/* 1MB IO Areas in the Virtual Address space. Define more if needed */

#define IO_AREA0_VADDR          (IO_AREA_START + (ARM_SECTION_SIZE*0))

#define IO_AREA1_VADDR          (IO_AREA_START + (ARM_SECTION_SIZE*1))

#define IO_AREA2_VADDR          (IO_AREA_START + (ARM_SECTION_SIZE*2))

#define IO_AREA3_VADDR          (IO_AREA_START + (ARM_SECTION_SIZE*3))

#define IO_AREA4_VADDR          (IO_AREA_START + (ARM_SECTION_SIZE*4))

#define IO_AREA5_VADDR          (IO_AREA_START + (ARM_SECTION_SIZE*5))

#define IO_AREA6_VADDR          (IO_AREA_START + (ARM_SECTION_SIZE*6))

#define IO_AREA7_VADDR          (IO_AREA_START + (ARM_SECTION_SIZE*7))

/*

 * Address of start of arm_high_vector - exception handling code

 */

#define ARM_HIGH_VECTOR_VADDR   (EXCPT_AREA_START | 0x000f0000 )

#define ARM_SYSCALL_VECTOR      (0xffffff00)

/*

 * These offsets depend on where the platform defines its physical memory

 * and how the system defines the virtual memory regions in arm/basiclayout.h

 */

//#define       KERNEL_OFFSET           (VIRT_ADDR_BASE - PHYS_ADDR_BASE)

//#define       PGTABLE_OFFSET          (PGTABLE_ADDR_BASE - PGTABLE_PHYS_ADDR_BASE)

/* Use a more predictible offset by just changing the top nibble */

#define KERNEL_OFFSET           VIRT_ADDR_BASE

#define PGTABLE_OFFSET          PGTABLE_ADDR_BASE

/*

 * Convenience macros for converting between address types.

 */

#if defined(__KERNEL__)

#define phys_to_virt(addr)      ((unsigned int)addr)

#define phys_to_ptab(addr)      ((unsigned int)addr)

#define virt_to_phys(addr)      ((unsigned int)addr)

#define virt_to_ptab(addr)      (phys_to_ptab(virt_to_phys(addr)))

#endif

#endif /* __BASICLAYOUT_H__ */