| Line 65... |
Line 65... |
// or keep it at the original speed
|
// or keep it at the original speed
|
// tPP = 1200 * MICROSECONDS,
|
// tPP = 1200 * MICROSECONDS,
|
// tSE = 1500 * MILLISECONDS;
|
// tSE = 1500 * MILLISECONDS;
|
*/
|
*/
|
static const unsigned
|
static const unsigned
|
CCS = 0; // 0: SDSC card, 1: SDHC or SDXC card
|
CCS = 1; // 0: SDSC card, 1: SDHC or SDXC card
|
|
|
SDSPISIM::SDSPISIM(void) {
|
SDSPISIM::SDSPISIM(void) {
|
m_dev = NULL;
|
m_dev = NULL;
|
m_last_sck = 1;
|
m_last_sck = 1;
|
m_block_address = (CCS==1);
|
m_block_address = (CCS==1);
|
| Line 114... |
Line 114... |
|
|
// m_write_count = 0;
|
// m_write_count = 0;
|
// m_ireg = m_oreg = 0;
|
// m_ireg = m_oreg = 0;
|
// m_sreg = 0x01c;
|
// m_sreg = 0x01c;
|
// m_creg = 0x001; // Iinitial creg on delivery
|
// m_creg = 0x001; // Iinitial creg on delivery
|
|
|
|
//
|
|
m_reading_data = false;
|
|
m_have_token = false;
|
}
|
}
|
|
|
void SDSPISIM::load(const char *fname) {
|
void SDSPISIM::load(const char *fname) {
|
m_dev = fopen(fname, "r+b");
|
m_dev = fopen(fname, "r+b");
|
|
|
| Line 126... |
Line 130... |
fseek(m_dev, 0l, SEEK_END);
|
fseek(m_dev, 0l, SEEK_END);
|
devln = ftell(m_dev);
|
devln = ftell(m_dev);
|
fseek(m_dev, 0l, SEEK_SET);
|
fseek(m_dev, 0l, SEEK_SET);
|
|
|
m_devblocks = devln>>9;
|
m_devblocks = devln>>9;
|
|
|
|
printf("SDCARD: NBLOCKS = %ld\n", m_devblocks);
|
}
|
}
|
}
|
}
|
|
|
int SDSPISIM::operator()(const int csn, const int sck, const int mosi) {
|
int SDSPISIM::operator()(const int csn, const int sck, const int mosi) {
|
// Keep track of a timer to determine when page program and erase
|
// Keep track of a timer to determine when page program and erase
|
| Line 185... |
Line 191... |
printf("(bitpos=%d,dat_in=%02x)\n", m_bitpos&7, m_dat_in&0x0ff);
|
printf("(bitpos=%d,dat_in=%02x)\n", m_bitpos&7, m_dat_in&0x0ff);
|
|
|
if ((m_bitpos&7)==0) {
|
if ((m_bitpos&7)==0) {
|
printf("SDSPI--RX BYTE %02x\n", m_dat_in&0x0ff);
|
printf("SDSPI--RX BYTE %02x\n", m_dat_in&0x0ff);
|
m_dat_out = 0xff;
|
m_dat_out = 0xff;
|
if (m_cmdidx < 6) {
|
if (m_reading_data) {
|
|
if (m_have_token) {
|
|
m_block_buf[m_rxloc++] = m_dat_in;
|
|
printf("SDSPI: WR[%3d] = %02x\n", m_rxloc-1,
|
|
m_dat_in&0x0ff);
|
|
if (m_rxloc >= 512+2) {
|
|
unsigned crc, rxcrc;
|
|
crc = blockcrc(512, m_block_buf);
|
|
rxcrc = ((m_block_buf[512]&0x0ff)<<8)
|
|
|(m_block_buf[513]&0x0ff);
|
|
|
|
printf("LEN = %d\n", m_rxloc);
|
|
printf("CHECKING CRC: (rx) %04x =? %04x (calc)\n",
|
|
crc, rxcrc);
|
|
m_reading_data = false;
|
|
m_have_token = false;
|
|
if (rxcrc == crc)
|
|
m_dat_out = 5;
|
|
else {
|
|
m_dat_out = 0x0b;
|
|
assert(rxcrc == crc);
|
|
}
|
|
}
|
|
} else {
|
|
if ((m_dat_in&0x0ff) == 0x0fe) {
|
|
printf("SDSPI: TOKEN!!\n");
|
|
m_have_token = true;
|
|
m_rxloc = 0;
|
|
} else printf("SDSPI: waiting on token\n");
|
|
}
|
|
} else if (m_cmdidx < 6) {
|
printf("SDSPI: CMDIDX = %d\n", m_cmdidx);
|
printf("SDSPI: CMDIDX = %d\n", m_cmdidx);
|
// All commands *must* start with a 01... pair of bits.
|
// All commands *must* start with a 01... pair of bits.
|
if (m_cmdidx == 0)
|
if (m_cmdidx == 0)
|
assert((m_dat_in&0xc0)==0x40);
|
assert((m_dat_in&0xc0)==0x40);
|
|
|
| Line 230... |
Line 266... |
m_host_supports_high_capacity = (m_cmdbuf[1]&0x40)?1:0;
|
m_host_supports_high_capacity = (m_cmdbuf[1]&0x40)?1:0;
|
m_reset_state = (m_powerup_busy)?
|
m_reset_state = (m_powerup_busy)?
|
SDSPI_RCVD_ACMD41
|
SDSPI_RCVD_ACMD41
|
:SDSPI_RESET_COMPLETE;
|
:SDSPI_RESET_COMPLETE;
|
break;
|
break;
|
|
case 51: // ACMD51
|
|
m_block_buf[0] = 0x0fe;
|
|
for(int j=0; j<8; j++)
|
|
m_block_buf[j+1] = m_csd[j];
|
|
m_blklen = 8;
|
|
add_block_crc(m_blklen, m_block_buf);
|
|
|
|
m_blkdly = 0;
|
|
m_blkidx = 0;
|
|
m_dat_out = 0;
|
|
break;
|
case 13: // ACMD13
|
case 13: // ACMD13
|
case 22: // ACMD22
|
case 22: // ACMD22
|
case 23: // ACMD23
|
case 23: // ACMD23
|
case 42: // ACMD42
|
case 42: // ACMD42
|
case 51: // ACMD51
|
|
default: // Unimplemented command!
|
default: // Unimplemented command!
|
m_rspbuf[0] = 0x04;
|
m_rspbuf[0] = 0x04;
|
m_rspdly = 4;
|
m_rspdly = 4;
|
fprintf(stderr, "SDSPI ERR: Alt command ACMD%d not implemented!\n", m_cmdbuf[0]&0x03f);
|
fprintf(stderr, "SDSPI ERR: Alt command ACMD%d not implemented!\n", m_cmdbuf[0]&0x03f);
|
assert(0 && "Not Implemented");
|
assert(0 && "Not Implemented");
|
| Line 319... |
Line 365... |
case 17: // CMD17 -- READ_SINGLE_BLOCK
|
case 17: // CMD17 -- READ_SINGLE_BLOCK
|
assert(m_reset_state == SDSPI_IN_OPERATION);
|
assert(m_reset_state == SDSPI_IN_OPERATION);
|
m_rspbuf[0] = 0x00;
|
m_rspbuf[0] = 0x00;
|
memset(m_block_buf, 0x0ff, SDSPI_MAXBLKLEN);
|
memset(m_block_buf, 0x0ff, SDSPI_MAXBLKLEN);
|
if (m_dev) {
|
if (m_dev) {
|
|
printf("Reading from block %08x of %08lx\n", arg, m_devblocks);
|
if (m_block_address) {
|
if (m_block_address) {
|
assert(arg < m_devblocks);
|
assert(arg < m_devblocks);
|
fseek(m_dev, arg<<9, SEEK_SET);
|
fseek(m_dev, arg<<9, SEEK_SET);
|
} else {
|
} else {
|
assert(arg < m_devblocks<<9);
|
assert(arg < m_devblocks<<9);
|
fseek(m_dev, arg, SEEK_SET);
|
fseek(m_dev, arg, SEEK_SET);
|
}
|
}
|
} m_block_buf[0] = 0x0fe;
|
} m_block_buf[0] = 0x0fe;
|
m_blklen = (1<<m_csd[5]);
|
m_blklen = 512; // (1<<m_csd[5]);
|
if (m_dev)
|
if (m_dev)
|
fread(&m_block_buf[1], m_blklen, 1, m_dev);
|
fread(&m_block_buf[1], m_blklen, 1, m_dev);
|
else
|
else
|
memset(&m_block_buf[1], 0, m_blklen);
|
memset(&m_block_buf[1], 0, m_blklen);
|
add_block_crc(m_blklen, m_block_buf);
|
add_block_crc(m_blklen, m_block_buf);
|
|
|
m_blkdly = 60;
|
m_blkdly = 60;
|
m_blkidx = 0;
|
m_blkidx = 0;
|
break;
|
break;
|
|
case 24: // CMD24 -- WRITE_BLOCK
|
|
m_reading_data = true;
|
|
m_have_token = false;
|
|
m_dat_out = 0;
|
|
break;
|
case 55: // CMD55 -- APP_CMD
|
case 55: // CMD55 -- APP_CMD
|
m_rspbuf[0] = 0x00;
|
m_rspbuf[0] = 0x00;
|
m_rspdly = 2;
|
m_rspdly = 2;
|
m_altcmd_flag = true;
|
m_altcmd_flag = true;
|
break;
|
break;
|
| Line 360... |
Line 412... |
break;
|
break;
|
case 6: // CMD6 -- SWITCH_FUNC
|
case 6: // CMD6 -- SWITCH_FUNC
|
case 12: // CMD12 -- STOP_TRANSMISSION (!impl)
|
case 12: // CMD12 -- STOP_TRANSMISSION (!impl)
|
case 16: // CMD16 -- SET_BLOCKLEN
|
case 16: // CMD16 -- SET_BLOCKLEN
|
case 18: // CMD18 -- READ_MULTIPLE_BLOCK
|
case 18: // CMD18 -- READ_MULTIPLE_BLOCK
|
case 24: // CMD24 -- WRITE_BLOCK
|
|
case 25: // CMD25 -- WRITE_MULTIPLE_BLOCK
|
case 25: // CMD25 -- WRITE_MULTIPLE_BLOCK
|
case 27: // CMD27 -- PROGRAM_CSD
|
case 27: // CMD27 -- PROGRAM_CSD
|
case 32: // CMD32 -- ERASE_WR_BLK_START_ADDR
|
case 32: // CMD32 -- ERASE_WR_BLK_START_ADDR
|
case 33: // CMD33 -- ERASE_WR_BLK_END_ADDR
|
case 33: // CMD33 -- ERASE_WR_BLK_END_ADDR
|
case 38: // CMD38 -- ERASE
|
case 38: // CMD38 -- ERASE
|
| Line 429... |
Line 480... |
unsigned fill = cmdcrc(5, buf);
|
unsigned fill = cmdcrc(5, buf);
|
printf("SDSPI: CRC-CHECK, should have a CRC of %02x\n", fill);
|
printf("SDSPI: CRC-CHECK, should have a CRC of %02x\n", fill);
|
return (fill == (buf[5]&0x0ff));
|
return (fill == (buf[5]&0x0ff));
|
}
|
}
|
|
|
void SDSPISIM::add_block_crc(int len, char *buf) const {
|
unsigned SDSPISIM::blockcrc(int len, char *buf) const {
|
unsigned int fill = 0, taps = 0x121;
|
unsigned int fill = 0, taps = 0x1021;
|
|
bool dbg = (len == 512);
|
|
|
for(int i=1; i<=len; i++) {
|
for(int i=0; i<len; i++) {
|
fill ^= (buf[i] << 8);
|
if (dbg) { printf("BUF[%3d] = %02x\n", i, buf[i]&0x0ff); }
|
|
fill ^= ((buf[i]&0x0ff) << 8);
|
for(int j=0; j<8; j++) {
|
for(int j=0; j<8; j++) {
|
if (fill&0x8000)
|
if (fill&0x8000)
|
fill = (fill<<1)^taps;
|
fill = (fill<<1)^taps;
|
else
|
else
|
fill <<= 1;
|
fill <<= 1;
|
}
|
}
|
}
|
}
|
|
|
|
fill &= 0x0ffff;
|
|
if (dbg) { printf("BLOCKCRC(%d,??) = %04x\n", len, fill); }
|
|
return fill;
|
|
}
|
|
|
|
void SDSPISIM::add_block_crc(int len, char *buf) const {
|
|
unsigned fill = blockcrc(len, &buf[1]);
|
|
|
buf[len+1] = (fill >> 8)&0x0ff;
|
buf[len+1] = (fill >> 8)&0x0ff;
|
buf[len+2] = (fill )&0x0ff;
|
buf[len+2] = (fill )&0x0ff;
|
}
|
}
|
|
|
|
|
No newline at end of file
|
No newline at end of file
|
