/*---------------------------------------------------------------------------------
$Id$
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<address_end && i<maxblocks; i++, address++) {
CARD_EEPDATA = *data++;
EepromWaitBusy();
}
CARD_CR1 = /*MODE*/0x40;
// wait programming 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) ?
EepromWaitBusy();
CARD_CR1 = /*MODE*/0x40;
}
}
// Chip Erase : clear FLASH MEMORY (TYPE 3 ONLY)
//---------------------------------------------------------------------------------
void cardEepromChipErase(void) {
//---------------------------------------------------------------------------------
int sz;
sz=cardEepromGetSize();
cardEepromSectorErase(0x00000);
cardEepromSectorErase(0x10000);
cardEepromSectorErase(0x20000);
cardEepromSectorErase(0x30000);
if(sz==512*1024)
{
cardEepromSectorErase(0x40000);
cardEepromSectorErase(0x50000);
cardEepromSectorErase(0x60000);
cardEepromSectorErase(0x70000);
}
}
// COMMAND Sec.erase 0xD8
void cardEepromSectorErase(uint32 address)
{
// set WEL (Write Enable Latch)
CARD_CR1 = /*E*/0x8000 | /*SEL*/0x2000 | /*MODE*/0x40;
CARD_EEPDATA = 0x06;
EepromWaitBusy();
CARD_CR1 = /*MODE*/0x40;
// SectorErase 0xD8
CARD_CR1 = /*E*/0x8000 | /*SEL*/0x2000 | /*MODE*/0x40;
CARD_EEPDATA = 0xD8;
EepromWaitBusy();
CARD_EEPDATA = (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;
}
