/*--------------------------------------------------------------------------------- $Id$ 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. ---------------------------------------------------------------------------------*/ #include "nds/card.h" #include "nds/dma.h" #include "nds/memory.h" //--------------------------------------------------------------------------------- void cardWriteCommand(const uint8 * command) { //--------------------------------------------------------------------------------- int index; CARD_CR1H = CARD_CR1_ENABLE | CARD_CR1_IRQ; for (index = 0; index < 8; index++) { CARD_COMMAND[7-index] = command[index]; } } //--------------------------------------------------------------------------------- void cardPolledTransfer(uint32 flags, uint32 * destination, uint32 length, const uint8 * command) { //--------------------------------------------------------------------------------- u32 data;; cardWriteCommand(command); CARD_CR2 = flags; uint32 * target = destination + length; do { // Read data if available if (CARD_CR2 & CARD_DATA_READY) { data=CARD_DATA_RD; if (destination < target) *destination = data; destination++; } } while (CARD_CR2 & CARD_BUSY); } //--------------------------------------------------------------------------------- void cardStartTransfer(const uint8 * command, uint32 * destination, int channel, uint32 flags) { //--------------------------------------------------------------------------------- cardWriteCommand(command); // Set up a DMA channel to transfer a word every time the card makes one DMA_SRC(channel) = (uint32)&CARD_DATA_RD; DMA_DEST(channel) = (uint32)destination; DMA_CR(channel) = DMA_ENABLE | DMA_START_CARD | DMA_32_BIT | DMA_REPEAT | DMA_SRC_FIX | 0x0001;; CARD_CR2 = flags; } //--------------------------------------------------------------------------------- uint32 cardWriteAndRead(const uint8 * command, uint32 flags) { //--------------------------------------------------------------------------------- cardWriteCommand(command); CARD_CR2 = flags | CARD_ACTIVATE | CARD_nRESET | 0x07000000; while (!(CARD_CR2 & CARD_DATA_READY)) ; return CARD_DATA_RD; } //--------------------------------------------------------------------------------- void cardRead00(uint32 address, uint32 * destination, uint32 length, uint32 flags) { //---------------------------------------------------------------------------------f uint8 command[8]; command[7] = 0; command[6] = (address >> 24) & 0xff; command[5] = (address >> 16) & 0xff; command[4] = (address >> 8) & 0xff; command[3] = address & 0xff; command[2] = 0; command[1] = 0; command[0] = 0; cardPolledTransfer(flags, destination, length, command); } //--------------------------------------------------------------------------------- void cardReadHeader(uint8 * header) { //--------------------------------------------------------------------------------- cardRead00(0, (uint32 *)header, 512, 0xA93F1FFF); } //--------------------------------------------------------------------------------- int cardReadID(uint32 flags) { //--------------------------------------------------------------------------------- uint8 command[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90}; return cardWriteAndRead(command, flags); } //--------------------------------------------------------------------------------- static inline void EepromWaitBusy(void) { //--------------------------------------------------------------------------------- while (CARD_CR1 & /*BUSY*/0x80); } //--------------------------------------------------------------------------------- uint8 cardEepromReadID(uint8 i) { //--------------------------------------------------------------------------------- return cardEepromCommand(/*READID*/0xAB, i&1); } //--------------------------------------------------------------------------------- uint8 cardEepromCommand(uint8 command, uint32 address) { //--------------------------------------------------------------------------------- uint8 retval; int k; CARD_CR1 = /*E*/0x8000 | /*SEL*/0x2000 | /*MODE*/0x40; CARD_CR1 = 0xFFFF; CARD_EEPDATA = command; EepromWaitBusy(); CARD_EEPDATA = (address >> 16) & 0xFF; EepromWaitBusy(); CARD_EEPDATA = (address >> 8) & 0xFF; EepromWaitBusy(); CARD_EEPDATA = (address) & 0xFF; EepromWaitBusy(); for(k=0;k<256;k++) { retval = CARD_EEPDATA; if(retval!=0xFF) break; EepromWaitBusy(); } CARD_CR1 = /*MODE*/0x40; return retval; } //--------------------------------------------------------------------------------- int cardEepromGetType(void) //--------------------------------------------------------------------------------- { uint8 c00; uint8 c05; uint8 c9f; uint8 c03; #ifdef ARM9 sysSetBusOwners(BUS_OWNER_ARM9, BUS_OWNER_ARM9); #endif c03=cardEepromCommand(0x03,0); c05=cardEepromCommand(0x05,0); c9f=cardEepromCommand(0x9f,0); c00=cardEepromCommand(0x00,0); if((c00==0x00) && (c9f==0x00)) return 0; // PassMe? if((c00==0xff) && (c05==0xff) && (c9f==0xff))return -1; if((c00==0xff) && (c05 & 0xFD) == 0xF0 && (c9f==0xff))return 1; if((c00==0xff) && (c05 & 0xFD) == 0x00 && (c9f==0xff))return 2; if((c00==0xff) && (c05 & 0xFD) == 0x00 && (c9f==0x00))return 3; if((c00==0xff) && (c05 & 0xFD) == 0x00 && (c9f==0x12))return 3; // NEW TYPE 3 if((c00==0xff) && (c05 & 0xFD) == 0x00 && (c9f==0x13))return 3; // NEW TYPE 3+ 4Mbit if((c00==0xff) && (c05 & 0xFD) == 0x00 && (c9f==0x14))return 3; // NEW TYPE 3++ 8Mbit MK4-FLASH Memory return 0; } //--------------------------------------------------------------------------------- uint32 cardEepromGetSize() { //--------------------------------------------------------------------------------- int type = cardEepromGetType(); if(type == -1) return 0; if(type == 0) return 8192; if(type == 1) return 512; if(type == 2) { static const uint32 offset0 = (8*1024-1); // 8KB static const uint32 offset1 = (2*8*1024-1); // 16KB u8 buf1; // +0k data read -> write u8 buf2; // +8k data read -> read u8 buf3; // +0k ~data write u8 buf4; // +8k data new comp buf2 cardReadEeprom(offset0,&buf1,1,type); cardReadEeprom(offset1,&buf2,1,type); buf3=~buf1; cardWriteEeprom(offset0,&buf3,1,type); cardReadEeprom (offset1,&buf4,1,type); cardWriteEeprom(offset0,&buf1,1,type); if(buf4!=buf2) // +8k return 8*1024; // 8KB(64kbit) else return 64*1024; // 64KB(512kbit) } if(type == 3) { uint8 c9f; c9f=cardEepromCommand(0x9f,0); if(c9f==0x14) return 1024*1024; // NEW TYPE 3++ 8Mbit(1024KByte) if(c9f==0x13) return 512*1024; // NEW TYPE 3+ 4Mbit(512KByte) return 256*1024; // TYPE 3 2Mbit(256KByte) } return 0; } //--------------------------------------------------------------------------------- void cardReadEeprom(uint32 address, uint8 *data, uint32 length, uint32 addrtype) { //--------------------------------------------------------------------------------- CARD_CR1 = /*E*/0x8000 | /*SEL*/0x2000 | /*MODE*/0x40; CARD_EEPDATA = 0x03 | ((addrtype == 1) ? address>>8<<3 : 0); EepromWaitBusy(); if (addrtype == 3) { CARD_EEPDATA = (address >> 16) & 0xFF; EepromWaitBusy(); } if (addrtype >= 2) { CARD_EEPDATA = (address >> 8) & 0xFF; EepromWaitBusy(); } CARD_EEPDATA = (address) & 0xFF; EepromWaitBusy(); while (length > 0) { CARD_EEPDATA = 0; EepromWaitBusy(); *data++ = CARD_EEPDATA; length--; } EepromWaitBusy(); CARD_CR1 = /*MODE*/0x40; } //--------------------------------------------------------------------------------- void cardWriteEeprom(uint32 address, uint8 *data, uint32 length, uint32 addrtype) { //--------------------------------------------------------------------------------- uint32 address_end = address + length; int i; int maxblocks = 32; if(addrtype == 1) maxblocks = 16; if(addrtype == 2) maxblocks = 32; if(addrtype == 3) maxblocks = 256; while (address < address_end) { // set WEL (Write Enable Latch) CARD_CR1 = /*E*/0x8000 | /*SEL*/0x2000 | /*MODE*/0x40; CARD_EEPDATA = 0x06; EepromWaitBusy(); CARD_CR1 = /*MODE*/0x40; // program maximum of 32 bytes CARD_CR1 = /*E*/0x8000 | /*SEL*/0x2000 | /*MODE*/0x40; if(addrtype == 1) { // WRITE COMMAND 0x02 + A8 << 3 CARD_EEPDATA = 0x02 | (address & BIT(8)) >> (8-3) ; EepromWaitBusy(); CARD_EEPDATA = address & 0xFF; EepromWaitBusy(); } else if(addrtype == 2) { CARD_EEPDATA = 0x02; EepromWaitBusy(); CARD_EEPDATA = address >> 8; EepromWaitBusy(); CARD_EEPDATA = address & 0xFF; EepromWaitBusy(); } else if(addrtype == 3) { CARD_EEPDATA = 0x02; EepromWaitBusy(); CARD_EEPDATA = (address >> 16) & 0xFF; EepromWaitBusy(); CARD_EEPDATA = (address >> 8) & 0xFF; EepromWaitBusy(); CARD_EEPDATA = address & 0xFF; EepromWaitBusy(); } for (i=0; address> 16) & 0xFF; EepromWaitBusy(); CARD_EEPDATA = (address >> 8) & 0xFF; EepromWaitBusy(); CARD_EEPDATA = address & 0xFF; EepromWaitBusy(); CARD_CR1 = /*MODE*/0x40; // wait erase to finish CARD_CR1 = /*E*/0x8000 | /*SEL*/0x2000 | /*MODE*/0x40; CARD_EEPDATA = 0x05; EepromWaitBusy(); do { CARD_EEPDATA = 0; EepromWaitBusy(); } while (CARD_EEPDATA & 0x01); // WIP (Write In Progress) ? CARD_CR1 = /*MODE*/0x40; }