DSTATUS disk_initialize (
BYTE drv /* Physical drive nmuber (0) */
)
{
UINT cmd, n;
DWORD resp[4];
BYTE ty;
if (drv) return STA_NOINIT; /* Supports only single drive */
if (Stat & STA_NODISK) return Stat; /* No card in the socket */
power_on(); /* Force socket power on */
MCI_CLOCK = 0x100 | (PCLK/MCLK_ID/2-1); /* Set MCICLK = MCLK_ID */
for (Timer[0] = 2; Timer[0]; );
LEDR_ON();
send_cmd(CMD0, 0, 0, NULL); /* Enter idle state */
CardRCA = 0;
/*---- Card is 'idle' state ----*/
Timer[0] = 1000; /* Initialization timeout of 1000 msec */
if (send_cmd(CMD8, 0x1AA, 1, resp) /* SDC Ver2 */
&& (resp[0] & 0xFFF) == 0x1AA) { /* The card can work at vdd range of 2.7-3.6V */
do { /* Wait while card is busy state (use ACMD41 with HCS bit) */
if (!Timer[0]) goto di_fail;
} while (!send_cmd(ACMD41, 0x40FF8000, 1, resp) || !(resp[0] & 0x80000000));
ty = (resp[0] & 0x40000000) ? CT_SD2 | CT_BLOCK : CT_SD2; /* Check CCS bit in the OCR */
}
else { /* SDC Ver1 or MMC */
if (send_cmd(ACMD41, 0x00FF8000, 1, resp)) {
ty = CT_SD1; cmd = ACMD41; /* ACMD41 is accepted -> SDC Ver1 */
} else {
ty = CT_MMC; cmd = CMD1; /* ACMD41 is rejected -> MMC */
}
do { /* Wait while card is busy state (use ACMD41 or CMD1) */
if (!Timer[0]) goto di_fail;
} while (!send_cmd(cmd, 0x00FF8000, 1, resp) || !(resp[0] & 0x80000000));
}
CardType = ty; /* Save card type */
bswap_cp(&CardInfo[32], resp); /* Save OCR */
/*---- Card is 'ready' state ----*/
if (!send_cmd(CMD2, 0, 2, resp)) goto di_fail; /* Enter ident state */
for (n = 0; n < 4; n++) bswap_cp(&CardInfo[n * 4 + 16], &resp[n]); /* Save CID */
/*---- Card is 'ident' state ----*/
if (ty & CT_SDC) { /* SDC: Get generated RCA and save it */
if (!send_cmd(CMD3, 0, 1, resp)) goto di_fail;
CardRCA = (WORD)(resp[0] >> 16);
} else { /* MMC: Assign RCA to the card */
if (!send_cmd(CMD3, 1 << 16, 1, resp)) goto di_fail;
static T_uezError SDCard_MS_MCI_Init(void *aWorkspace, TUInt32 aAddress)
{
T_MassStorage_SDCard_MCI_Workspace *p =
(T_MassStorage_SDCard_MCI_Workspace *)aWorkspace;
TUInt16 cmd;
TUInt32 n;
TUInt32 response[4];
TUInt8 type;
TUInt32 timeStart;
T_msSizeInfo si;
T_uezError error;
/* No card in the socket? */
if (p->iStat & STA_NODISK)
return UEZ_ERROR_DEVICE_NOT_FOUND;
// If already initialized, we are done!
if (p->iInitPerformed)
return UEZ_ERROR_NONE;
(*p->iMCI)->PowerOn(p->iMCI); /* Force socket power on */
(*p->iMCI)->SetClockRate(p->iMCI, SDCARD_MCI_RATE_FOR_ID_STATE, EFalse);
UEZTaskDelay(2);
(*p->iMCI)->SendCommand(p->iMCI, MCI_CMD0, 0, 0, NULL); /* Put the card into idle state */
p->iRCA = 0;
/*---- Card is 'idle' state ----*/
/* Initialization timeout of SDCARD_INIT_TIMEOUT msec */
// Timer[0] = 1000;
timeStart = UEZTickCounterGet();
if ((*p->iMCI)->SendCommand(p->iMCI, MCI_CMD8, 0x1AA, 1, response)
&& (response[0] & 0xFFF) == 0x1AA) {
/* Card is SDC Ver2 */
/* The card can work at vdd range of 2.7-3.6V */
/* Wait while card is busy state (use MCI_ACMD41 with HCS bit) */
do {
/* This loop will take a time. Insert task rotation here for multitask envilonment. */
UEZTaskDelay(1);
if (UEZTickCounterGetDelta(timeStart) >= SDCARD_INIT_TIMEOUT)
goto di_fail;
} while (!(*p->iMCI)->SendCommand(p->iMCI, MCI_ACMD41, 0x40FF8000, 1,
response) || !(response[0] & 0x80000000));
type = (response[0] & 0x40000000) ? CT_SD2 | CT_BLOCK : CT_SD2; /* Check CCS bit in the OCR */
} else {
/* Card is SDC Ver1 or MMC */
if ((*p->iMCI)->SendCommand(p->iMCI, MCI_ACMD41, 0x00FF8000, 1,
response)) {
type = CT_SD1;
cmd = MCI_ACMD41; /* MCI_ACMD41 is accepted -> SDC Ver1 */
} else {
type = CT_MMC;
cmd = MCI_CMD1; /* MCI_ACMD41 is rejected -> MMC */
}
/* Wait while card is busy state (use MCI_ACMD41 or MCI_CMD1) */
do {
/* This loop will take a time. Insert task rotation here for multitask envilonment. */
UEZTaskDelay(1);
if (UEZTickCounterGetDelta(timeStart) >= SDCARD_INIT_TIMEOUT)
goto di_fail;
} while (!(*p->iMCI)->SendCommand(p->iMCI, cmd, 0x00FF8000, 1, response)
|| !(response[0] & 0x80000000));
}
/* Save card type */
p->iCardType = type;
bswap_cp(&p->iCardInfo[32], response); /* Save OCR */
/*---- Card is 'ready' state ----*/
if (!(*p->iMCI)->SendCommand(p->iMCI, MCI_CMD2, 0, 2, response))
goto di_fail;
/* Enter ident state */
for (n = 0; n < 4; n++)
bswap_cp(&p->iCardInfo[n * 4 + 16], &response[n]); /* Save CID */
/*---- Card is 'ident' state ----*/
if (type & CT_SDC) {
/* SDC: Get generated RCA and save it */
if (!(*p->iMCI)->SendCommand(p->iMCI, MCI_CMD3, 0, 1, response))
goto di_fail;
p->iRCA = (TUInt16)(response[0] >> 16);
} else {
/* MMC: Assign RCA to the card */
if (!(*p->iMCI)->SendCommand(p->iMCI, MCI_CMD3, 1 << 16, 1, response))
DSTATUS disk_initialize (
BYTE drv /* Physical drive nmuber (0) */
)
{
// BYTE n, cmd, ty, ocr[4];
UINT cmd, n;
DWORD resp[4];
BYTE ty;
SDC_PRMS_T params;
if (!sdcard_init(¶ms)) {
return STA_NOINIT;
}
if (drv) return STA_NOINIT; /* Supports only single drive */
if (Stat & STA_NODISK) return Stat; /* No card in the socket */
power_on(); /* Force socket power on */
for (Timer1 = 2; Timer1; );
send_cmd(CMD0, 0, 0, NULL); /* Enter idle state */
CardRCA = 0;
Timer1 = 10;
while(Timer1);
/*---- Card is 'idle' state ----*/
Timer1 = 100; /* Initialization timeout of 1000 msec */
if (send_cmd(CMD8, 0x1AA, 1, resp) /* SDC Ver2 */
&& (resp[0] & 0xFFF) == 0x1AA) { /* The card can work at vdd range of 2.7-3.6V */
do { /* Wait while card is busy state (use ACMD41 with HCS bit) */
/* This loop will take a time. Insert wai_tsk(1) here for multitask envilonment. */
if (!Timer1) goto di_fail;
} while (!send_cmd(ACMD41, 0x40FF8000, 1, resp) || !(resp[0] & 0x80000000));
ty = (resp[0] & 0x40000000) ? CT_SD2|CT_BLOCK : CT_SD2; /* Check CCS bit in the OCR */
}
else { /* SDC Ver1 or MMC */
if (send_cmd(ACMD41, /*0x00FF8000*/0, 1, resp)) {
ty = CT_SD1; cmd = ACMD41; /* ACMD41 is accepted -> SDC Ver1 */
} else {
ty = CT_MMC; cmd = CMD1; /* ACMD41 is rejected -> MMC */
}
do { /* Wait while card is busy state (use ACMD41 or CMD1) */
/* This loop will take a time. Insert wai_tsk(1) here for multitask envilonment. */
if (!Timer1) {
Timer1 = Timer1;
goto di_fail;
}
} while (!send_cmd(cmd, 0x00FF8000, 1, resp) || !(resp[0] & 0x80000000));
}
CardType = ty; /* Save card type */
bswap_cp(&CardInfo[32], resp); /* Save OCR */
/*---- Card is 'ready' state ----*/
if (!send_cmd(CMD2, 0, 2, resp)) goto di_fail; /* Enter ident state */
for (n = 0; n < 4; n++) bswap_cp(&CardInfo[n * 4 + 16], &resp[n]); /* Save CID */
/*---- Card is 'ident' state ----*/
if (ty & CT_SDC) { /* SDC: Get generated RCA and save it */
if (!send_cmd(CMD3, 0, 1, resp)) goto di_fail;
CardRCA = (WORD)(resp[0] >> 16);
} else { /* MMC: Assign RCA to the card */
if (!send_cmd(CMD3, 1 << 16, 1, resp)) goto di_fail;
