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Diffstat (limited to 'include/libnds/nds/card.h')
| -rw-r--r-- | include/libnds/nds/card.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/include/libnds/nds/card.h b/include/libnds/nds/card.h new file mode 100644 index 0000000000..7e82b2f693 --- /dev/null +++ b/include/libnds/nds/card.h @@ -0,0 +1,125 @@ +/*--------------------------------------------------------------------------------- + Copyright (C) 2005 + Michael Noland (joat) + Jason Rogers (dovoto) + Dave Murphy (WinterMute) + + 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_CARD_INCLUDE +#define NDS_CARD_INCLUDE + + +#include "jtypes.h" + +// Card bus +#define CARD_CR1 (*(vuint16*)0x040001A0) +#define CARD_CR1H (*(vuint8*)0x040001A1) +#define CARD_EEPDATA (*(vuint8*)0x040001A2) +#define CARD_CR2 (*(vuint32*)0x040001A4) +#define CARD_COMMAND ((vuint8*)0x040001A8) + +#define CARD_DATA_RD (*(vuint32*)0x04100010) + +#define CARD_1B0 (*(vuint32*)0x040001B0) +#define CARD_1B4 (*(vuint32*)0x040001B4) +#define CARD_1B8 (*(vuint16*)0x040001B8) +#define CARD_1BA (*(vuint16*)0x040001BA) + + +#define CARD_CR1_ENABLE 0x80 // in byte 1, i.e. 0x8000 +#define CARD_CR1_IRQ 0x40 // in byte 1, i.e. 0x4000 + + +// CARD_CR2 register: + +#define CARD_ACTIVATE (1<<31) // when writing, get the ball rolling +// 1<<30 +#define CARD_nRESET (1<<29) // value on the /reset pin (1 = high out, not a reset state, 0 = low out = in reset) +#define CARD_28 (1<<28) // when writing +#define CARD_27 (1<<27) // when writing +#define CARD_26 (1<<26) +#define CARD_22 (1<<22) +#define CARD_19 (1<<19) +#define CARD_ENCRYPTED (1<<14) // when writing, this command should be encrypted +#define CARD_13 (1<<13) // when writing +#define CARD_4 (1<<4) // when writing + +// 3 bits in b10..b8 indicate something +// read bits +#define CARD_BUSY (1<<31) // when reading, still expecting incomming data? +#define CARD_DATA_READY (1<<23) // when reading, CARD_DATA_RD or CARD_DATA has another word of data and is good to go + + +#ifdef __cplusplus +extern "C" { +#endif + + +void cardWriteCommand(const uint8 * command); + +void cardPolledTransfer(uint32 flags, uint32 * destination, uint32 length, const uint8 * command); +void cardStartTransfer(const uint8 * command, uint32 * destination, int channel, uint32 flags); +uint32 cardWriteAndRead(const uint8 * command, uint32 flags); + +// These commands require the cart to not be initialized yet, which may mean the user +// needs to eject and reinsert the cart or they will return random data. +void cardRead00(uint32 address, uint32 * destination, uint32 length, uint32 flags); +void cardReadHeader(uint8 * header); +int cardReadID(uint32 flags); + +// Reads from the EEPROM +void cardReadEeprom(uint32 address, uint8 *data, uint32 length, uint32 addrtype); + +// Writes to the EEPROM. TYPE 3 EEPROM must be erased first (I think?) +void cardWriteEeprom(uint32 address, uint8 *data, uint32 length, uint32 addrtype); + +// Returns the ID of the EEPROM chip? Doesn't work well, most chips give ff,ff +// i = 0 or 1 +uint8 cardEepromReadID(uint8 i); + +// Sends a command to the EEPROM +uint8 cardEepromCommand(uint8 command, uint32 address); + +/* + * -1:no card or no EEPROM + * 0:unknown PassMe? + * 1:TYPE 1 4Kbit(512Byte) EEPROM + * 2:TYPE 2 64Kbit(8KByte)or 512kbit(64Kbyte) EEPROM + * 3:TYPE 3 2Mbit(256KByte) FLASH MEMORY (some rare 4Mbit and 8Mbit chips also) + */ +int cardEepromGetType(void); + +// Returns the size in bytes of EEPROM +uint32 cardEepromGetSize(void); + +// Erases the entire chip. TYPE 3 chips MUST be erased before writing to them. (I think?) +void cardEepromChipErase(void); + +// Erases a single sector of the TYPE 3 chip +void cardEepromSectorErase(uint32 address); + +#ifdef __cplusplus +} +#endif + + +#endif + |