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Diffstat (limited to 'include/libnds/nds/memory.h')
| -rw-r--r-- | include/libnds/nds/memory.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/include/libnds/nds/memory.h b/include/libnds/nds/memory.h new file mode 100644 index 0000000000..46864e50a7 --- /dev/null +++ b/include/libnds/nds/memory.h @@ -0,0 +1,229 @@ +/*--------------------------------------------------------------------------------- + + memory.h -- Declaration of memory regions + + + Copyright (C) 2005 Michael Noland (joat) and Jason Rogers (dovoto) + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any + damages arising from the use of this software. + + Permission is granted to anyone to use this software for any + purpose, including commercial applications, and to alter it and + redistribute it freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you + must not claim that you wrote the original software. If you use + this software in a product, an acknowledgment in the product + documentation would be appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and + must not be misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. + +---------------------------------------------------------------------------------*/ + +#ifndef NDS_MEMORY_INCLUDE +#define NDS_MEMORY_INCLUDE + + +#include "jtypes.h" + + +#ifdef ARM9 +#define REG_EXMEMCNT (*(vuint16*)0x04000204) +#else +#define REG_EXMEMSTAT (*(vuint16*)0x04000204) +#endif + +#define ARM7_MAIN_RAM_PRIORITY BIT(15) +#define ARM7_OWNS_CARD BIT(11) +#define ARM7_OWNS_ROM BIT(7) + + +// Protection register (write-once sadly) +#ifdef ARM7 +#define PROTECTION (*(vuint32*)0x04000308) +#endif + + +#define ALLRAM ((uint8*)0x00000000) + +#define MAINRAM8 ((uint8*)0x02000000) +#define MAINRAM16 ((uint16*)0x02000000) +#define MAINRAM32 ((uint32*)0x02000000) + +// fixme: shared RAM + +// GBA_BUS is volatile, while GBAROM is not +#define GBA_BUS ((vuint16 *)(0x08000000)) +#define GBAROM ((uint16*)0x08000000) + +#define SRAM ((uint8*)0x0A000000) + + +#ifdef ARM9 +#define PALETTE ((uint16*)0x05000000) +#define PALETTE_SUB ((uint16*)0x05000400) + +#define BG_PALETTE ((uint16*)0x05000000) +#define BG_PALETTE_SUB ((uint16*)0x05000400) + +#define SPRITE_PALETTE ((uint16*)0x05000200) +#define SPRITE_PALETTE_SUB ((uint16*)0x05000600) + +#define BG_GFX ((uint16*)0x6000000) +#define BG_GFX_SUB ((uint16*)0x6200000) +#define SPRITE_GFX ((uint16*)0x6400000) +#define SPRITE_GFX_SUB ((uint16*)0x6600000) + +#define VRAM_0 ((uint16*)0x6000000) +#define VRAM ((uint16*)0x6800000) +#define VRAM_A ((uint16*)0x6800000) +#define VRAM_B ((uint16*)0x6820000) +#define VRAM_C ((uint16*)0x6840000) +#define VRAM_D ((uint16*)0x6860000) +#define VRAM_E ((uint16*)0x6880000) +#define VRAM_F ((uint16*)0x6890000) +#define VRAM_G ((uint16*)0x6894000) +#define VRAM_H ((uint16*)0x6898000) +#define VRAM_I ((uint16*)0x68A0000) + +#define OAM ((uint16*)0x07000000) +#define OAM_SUB ((uint16*)0x07000400) +#endif + +#ifdef ARM7 +#define VRAM ((uint16*)0x06000000) +#endif + + +typedef struct sGBAHeader { + uint32 entryPoint; + uint8 logo[156]; + char title[0xC]; + char gamecode[0x4]; + uint16 makercode; + uint8 is96h; + uint8 unitcode; + uint8 devicecode; + uint8 unused[7]; + uint8 version; + uint8 complement; + uint16 checksum; +} __attribute__ ((__packed__)) tGBAHeader; + +#define GBA_HEADER (*(tGBAHeader *)0x08000000) + + +typedef struct sNDSHeader { + char gameTitle[12]; + char gameCode[4]; + char makercode[2]; + uint8 unitCode; + uint8 deviceType; // type of device in the game card + uint8 deviceSize; // device capacity (1<<n Mbit) + uint8 reserved1[9]; + uint8 romversion; + uint8 flags; // auto-boot flag + + uint32 arm9romSource; + uint32 arm9executeAddress; + uint32 arm9destination; + uint32 arm9binarySize; + + uint32 arm7romSource; + uint32 arm7executeAddress; + uint32 arm7destination; + uint32 arm7binarySize; + + uint32 filenameSource; + uint32 filenameSize; + uint32 fatSource; + uint32 fatSize; + + uint32 arm9overlaySource; + uint32 arm9overlaySize; + uint32 arm7overlaySource; + uint32 arm7overlaySize; + + uint32 cardControl13; // used in modes 1 and 3 + uint32 cardControlBF; // used in mode 2 + uint32 bannerOffset; + + uint16 secureCRC16; + + uint16 readTimeout; + + uint32 unknownRAM1; + uint32 unknownRAM2; + + uint32 bfPrime1; + uint32 bfPrime2; + uint32 romSize; + + uint32 headerSize; + uint32 zeros88[14]; + uint8 gbaLogo[156]; + uint16 logoCRC16; + uint16 headerCRC16; + + uint32 debugRomSource; + uint32 debugRomSize; + uint32 debugRomDestination; + uint32 offset_0x16C; + + uint8 zero[0x90]; +} __attribute__ ((__packed__)) tNDSHeader; + +#define NDSHeader (*(tNDSHeader *)0x027FFE00) + + +typedef struct sNDSBanner { + uint16 version; + uint16 crc; + uint8 reserved[28]; + uint8 icon[512]; + uint16 palette[16]; + uint16 titles[6][128]; +} __attribute__ ((__packed__)) tNDSBanner; + + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef ARM9 +#define BUS_OWNER_ARM9 true +#define BUS_OWNER_ARM7 false + +// Changes only the gba rom bus ownership +static inline void sysSetCartOwner(bool arm9) { + REG_EXMEMCNT = (REG_EXMEMCNT & ~ARM7_OWNS_ROM) | (arm9 ? 0 : ARM7_OWNS_ROM); +} +// Changes only the nds card bus ownership +static inline void sysSetCardOwner(bool arm9) { + REG_EXMEMCNT = (REG_EXMEMCNT & ~ARM7_OWNS_CARD) | (arm9 ? 0 : ARM7_OWNS_CARD); +} + +// Changes all bus ownerships +static inline void sysSetBusOwners(bool arm9rom, bool arm9card) { + uint16 pattern = REG_EXMEMCNT & ~(ARM7_OWNS_CARD|ARM7_OWNS_ROM); + pattern = pattern | (arm9card ? 0: ARM7_OWNS_CARD ) | + (arm9rom ? 0: ARM7_OWNS_ROM ); + REG_EXMEMCNT = pattern; +} + +#endif + + +#ifdef __cplusplus +} +#endif + + +#endif + |