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alt64/disk.c
Jay Oster bb1e653309 Initial Commit: v0.186
2014-06-28 22:10:11 -07:00

712 lines
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C
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#include <console.h>
#include "disk.h"
#include "mem.h"
#include "everdrive.h"
#include "errors.h"
#include "sys.h"
#include "usb.h"
#define CMD0 0x40 // software reset
#define CMD1 0x41 // brings card out of idle state
#define CMD8 0x48 // Reserved
#define CMD12 0x4C // stop transmission on multiple block read
#define CMD17 0x51 // read single block
#define CMD18 0x52 // read multiple block
#define CMD58 0x7A // reads the OCR register
#define CMD55 0x77
#define CMD41 0x69
#define CMD24 0x58 // writes a single block
#define CMD25 0x59 // writes a multi block
#define ACMD41 0x69
#define ACMD6 0x46
#define SD_V2 2
#define SD_HC 1
#define CMD2 0x42 //read cid
#define CMD3 0x43 //read rca
#define CMD7 0x47
#define CMD9 0x49
#define CMD6 0x46
#define R1 1
#define R2 2
#define R3 3
#define R6 6
#define R7 7
u8 card_type;
u8 sd_resp_buff[18];
u32 disk_interface;
unsigned int diskCrc7(unsigned char *buff, unsigned int len);
void diskCrc16SD(u8 *data, u16 *crc_out, u16 len);
u8 diskGetRespTypeSD(u8 cmd);
u8 diskCmdSD(u8 cmd, u32 arg);
u8 diskInitSD();
u8 diskReadSD(u32 saddr, void *buff, u16 slen);
u8 diskWriteSD(u32 saddr, u8 *buff, u16 slen);
u8 diskStopRwSD();
u8 diskCmdSPI(u8 cmd, u32 arg);
u8 diskInitSPI();
u8 diskReadSPI(u32 saddr, void *buff, u16 slen);
u8 diskWriteSPI(u32 saddr, u8 *buff, u16 slen);
const u16 sd_crc16_table[] = {
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
};
void diskSetInterface(u32 interface) {
disk_interface = interface;
}
u8 diskGetInterface() {
return disk_interface;
}
u8 diskInit() {
if (disk_interface == DISK_IFACE_SD) {
return diskInitSD();
} else {
return diskInitSPI();
}
}
u8 diskRead(u32 saddr, void *buff, u16 slen) {
if (disk_interface == DISK_IFACE_SD) {
return diskReadSD(saddr, buff, slen);
} else {
return diskReadSPI(saddr, buff, slen);
}
}
u8 diskWrite(u32 saddr, u8 *buff, u16 slen) {
if (disk_interface == DISK_IFACE_SD) {
return diskWriteSD(saddr, buff, slen);
} else {
return diskWriteSPI(saddr, buff, slen);
}
}
void diskCrc16SD(u8 *data, u16 *crc_out, u16 len) {
///u16 len = 512;
u16 i, tmp1, u;
u8 dat[4];
u8 dat_tmp;
u16 crc_buff[4];
for (i = 0; i < 4; i++)crc_buff[i] = 0;
for (i = 0; i < 4; i++)crc_out[i] = 0;
//u16 dptr = 0;
while (len) {
len -= 4;
for (i = 0; i < 4; i++)dat[i] = 0;
for (u = 0; u < 4; u++) {
dat_tmp = data[3 - u];
//dat_tmp = 0xff;
for (i = 0; i < 4; i++) {
dat[i] >>= 1;
dat[i] |= (dat_tmp & 1) << 7;
dat_tmp >>= 1;
}
for (i = 0; i < 4; i++) {
dat[i] >>= 1;
dat[i] |= (dat_tmp & 1) << 7;
dat_tmp >>= 1;
}
}
data += 4;
for (u = 0; u < 4; u++) {
tmp1 = crc_buff[u];
crc_buff[u] = sd_crc16_table[(tmp1 >> 8) ^ dat[u]];
crc_buff[u] = crc_buff[u] ^ (tmp1 << 8);
}
}
for (i = 0; i < 4 * 16; i++) {
crc_out[3 - i / 16] >>= 1;
crc_out[3 - i / 16] |= (crc_buff[i % 4] & 1) << 15;
crc_buff[i % 4] >>= 1;
}
}
unsigned int diskCrc7(unsigned char *buff, unsigned int len) {
unsigned int a, crc = 0;
while (len--) {
crc ^= *buff++;
a = 8;
do {
crc <<= 1;
if (crc & (1 << 8)) crc ^= 0x12;
} while (--a);
}
return (crc & 0xfe);
}
u8 diskGetRespTypeSD(u8 cmd) {
switch (cmd) {
case CMD3:
return R6;
case CMD8:
return R7;
case CMD2:
case CMD9:
return R2;
case CMD58:
case CMD41:
return R3;
default: return R1;
}
}
u8 diskCmdSD(u8 cmd, u32 arg) {
u8 resp_type = diskGetRespTypeSD(cmd);
u8 p = 0;
u8 buff[6];
volatile u8 resp;
volatile u32 i = 0;
u8 resp_len = resp_type == R2 ? 17 : 6;
u8 crc;
buff[p++] = cmd;
buff[p++] = (arg >> 24);
buff[p++] = (arg >> 16);
buff[p++] = (arg >> 8);
buff[p++] = (arg >> 0);
crc = diskCrc7(buff, 5) | 1;
evd_SDcmdWriteMode(0);
mem_spi(0xff);
mem_spi(cmd);
mem_spi(arg >> 24);
mem_spi(arg >> 16);
mem_spi(arg >> 8);
mem_spi(arg);
mem_spi(crc);
evd_SDcmdReadMode(1);
i = 0;
resp = 0xff;
while ((resp & 192) != 0) {
resp = mem_spi(resp);
if (i++ == WAIT)return SD_CMD_TIMEOUT;
}
evd_SDcmdReadMode(0);
sd_resp_buff[0] = resp;
for (i = 1; i < resp_len; i++) {
sd_resp_buff[i] = mem_spi(0xff);
}
if (resp_type != R3) {
if (resp_type == R2) {
crc = diskCrc7(sd_resp_buff + 1, resp_len - 2) | 1;
} else {
crc = diskCrc7(sd_resp_buff, resp_len - 1) | 1;
}
if (crc != sd_resp_buff[resp_len - 1])return SD_CMD_CRC_ERROR;
}
return 0;
}
u8 diskInitSD() {
u16 i;
volatile u8 resp = 0;
u32 rca;
u32 wait_len = WAIT;
card_type = 0;
evd_enableSDMode();
memSpiSSOff();
memSpiSetSpeed(SPI_SPEED_INIT);
evd_SDcmdWriteMode(0);
for (i = 0; i < 40; i++)mem_spi(0xff);
resp = diskCmdSD(CMD0, 0x1aa);
for (i = 0; i < 40; i++)mem_spi(0xff);
resp = diskCmdSD(CMD8, 0x1aa);
if (resp != 0 && resp != SD_CMD_TIMEOUT) {
return SD_INIT_ERROR + 0;
}
if (resp == 0)card_type |= SD_V2;
if (card_type == SD_V2) {
for (i = 0; i < wait_len; i++) {
resp = diskCmdSD(CMD55, 0);
if (resp)return SD_INIT_ERROR + 1;
if ((sd_resp_buff[3] & 1) != 1)continue;
resp = diskCmdSD(CMD41, 0x40300000);
if ((sd_resp_buff[1] & 128) == 0)continue;
break;
}
} else {
i = 0;
do {
resp = diskCmdSD(CMD55, 0);
if (resp)return SD_INIT_ERROR + 2;
resp = diskCmdSD(CMD41, 0x40300000);
if (resp)return SD_INIT_ERROR + 3;
} while (sd_resp_buff[1] < 1 && i++ < wait_len);
}
if (i == wait_len)return SD_INIT_ERROR + 4;
if ((sd_resp_buff[1] & 64) && card_type != 0)card_type |= SD_HC;
resp = diskCmdSD(CMD2, 0);
if (resp)return SD_INIT_ERROR + 5;
resp = diskCmdSD(CMD3, 0);
if (resp)return SD_INIT_ERROR + 6;
resp = diskCmdSD(CMD7, 0);
//if (resp)return resp;
rca = (sd_resp_buff[1] << 24) | (sd_resp_buff[2] << 16) | (sd_resp_buff[3] << 8) | (sd_resp_buff[4] << 0);
resp = diskCmdSD(CMD9, rca); //get csd
if (resp)return SD_INIT_ERROR + 7;
resp = diskCmdSD(CMD7, rca);
if (resp)return SD_INIT_ERROR + 8;
resp = diskCmdSD(CMD55, rca);
if (resp)return SD_INIT_ERROR + 9;
resp = diskCmdSD(CMD6, 2);
if (resp)return SD_INIT_ERROR + 10;
memSpiSetSpeed(SPI_SPEED_25);
return 0;
}
u8 diskReadSD(u32 saddr, void *buff, u16 slen) {
u8 resp;
if (!(card_type & 1))saddr *= 512;
resp = diskCmdSD(CMD18, saddr);
if (resp)return DISK_ERR_RD1;
resp = memSpiRead(buff, slen);
if (resp)return resp;
//console_printf("drd: %0X\n", saddr);
resp = diskStopRwSD();
return resp;
}
u8 diskStopRwSD() {
u8 resp;
u16 i;
resp = diskCmdSD(CMD12, 0);
if (resp)return DISK_ERR_CLOSE_RW1;
evd_SDdatReadMode(0);
mem_spi(0xff);
i = 65535;
while (i--) {
if (mem_spi(0xff) == 0xff)break;
if (mem_spi(0xff) == 0xff)break;
if (mem_spi(0xff) == 0xff)break;
if (mem_spi(0xff) == 0xff)break;
}
if (i == 0)return DISK_ERR_CLOSE_RW2;
return 0;
}
u8 diskWriteSD(u32 saddr, u8 *buff, u16 slen) {
u8 resp;
u16 crc16[5];
u16 i;
u16 u;
u8 ram_buff[512];
u8 *buff_ptr;
if (!(card_type & 1))saddr *= 512;
resp = diskCmdSD(CMD25, saddr);
if (resp)return DISK_ERR_WR1;
evd_SDdatWriteMode(0);
while (slen--) {
if ((u32) buff >= ROM_ADDR && (u32) buff < ROM_END_ADDR) {
dma_read_s(ram_buff, (u32) buff, 512);
buff_ptr = ram_buff;
} else {
buff_ptr = buff;
}
diskCrc16SD(buff_ptr, crc16, 512);
evd_SDdatWriteMode(0);
mem_spi(0xff);
mem_spi(0xf0);
memSpiWrite(buff_ptr);
for (i = 0; i < 4; i++) {
mem_spi(crc16[i] >> 8);
mem_spi(crc16[i] & 0xff);
}
buff += 512;
evd_SDdatWriteMode(1);
mem_spi(0xff);
evd_SDdatReadMode(1);
i = 1024;
while ((mem_spi(0xff) & 1) != 0 && i-- != 0);
if (i == 0)return DISK_WR_SB_TOUT;
resp = 0;
for (i = 0; i < 3; i++) {
resp <<= 1;
u = mem_spi(0xff);
resp |= u & 1;
}
resp &= 7;
if (resp != 0x02) {
//console_printf("error blia: %0X\n", resp);
// joyWait();
if (resp == 5)return DISK_ERR_WR_CRC;
return DISK_ERR_WRX;
}
evd_SDdatReadMode(0);
mem_spi(0xff);
i = 65535;
while (i--) {
if (mem_spi(0xff) == 0xff)break;
if (mem_spi(0xff) == 0xff)break;
}
if (i == 0)return DISK_ERR_WR2;
}
resp = diskStopRwSD();
if (resp)return resp;
return 0;
}
u8 diskCmdSPI(u8 cmd, u32 arg) {
u8 crc;
u8 p = 0;
u8 buff[6];
buff[p++] = cmd;
buff[p++] = (arg >> 24);
buff[p++] = (arg >> 16);
buff[p++] = (arg >> 8);
buff[p++] = (arg >> 0);
crc = diskCrc7(buff, 5) | 1;
volatile u32 i = 0;
volatile u8 resp;
memSpiBusy();
memSpiSSOff();
memSpiSSOn();
//mem_spi(0x1);
mem_spi(0xff);
mem_spi(cmd);
mem_spi(arg >> 24);
mem_spi(arg >> 16);
mem_spi(arg >> 8);
mem_spi(arg);
mem_spi(crc);
mem_spi(0xff);
resp = mem_spi(0xff);
// memSpiSSOn();
while (resp == 0xff) {
resp = mem_spi(0xff);
if (i++ == WAIT)break;
}
memSpiSSOff();
return resp;
}
u8 diskInitSPI() {
u16 i;
u32 u;
volatile u8 resp = 0;
u8 cmd;
u32 wait_len = WAIT;
card_type = 0;
evd_enableSPIMode();
//return evd_mmcInit();
memSpiSetSpeed(SPI_SPEED_INIT);
for (u = 0; u < 4; u++) {
for (i = 0; i < 40; i++)mem_spi(0xff);
resp = diskCmdSPI(CMD0, 0);
if (resp == 1)break;
}
if (resp != 1) return DISK_ERR_INIT + 0;
//mmcCmdCrc(0x7b, 0, 0x91);
resp = diskCmdSPI(CMD8, 0x1aa);
for (i = 0; i < 5; i++)mem_spi(0xff);
if (resp == 0xff)return DISK_ERR_INIT + 1;
if (resp != 5)card_type |= SD_V2;
if (card_type == 2) {
for (i = 0; i < wait_len; i++) {
resp = diskCmdSPI(CMD55, 0xffff);
if (resp == 0xff)return DISK_ERR_INIT + 2;
if (resp != 1)continue;
resp = diskCmdSPI(CMD41, 0x40300000);
if (resp == 0xff)return DISK_ERR_INIT + 3;
if (resp != 0)continue;
break;
}
if (i == wait_len)return DISK_ERR_INIT + 4;
resp = diskCmdSPI(CMD58, 0);
if (resp == 0xff)return DISK_ERR_INIT + 5;
memSpiSSOn();
resp = mem_spi(0xff);
for (i = 0; i < 3; i++)mem_spi(0xff);
if ((resp & 0x40))card_type |= 1;
} else {
i = 0;
resp = diskCmdSPI(CMD55, 0);
if (resp == 0xff)return DISK_ERR_INIT + 6;
resp = diskCmdSPI(CMD41, 0);
if (resp == 0xff)return DISK_ERR_INIT + 7;
cmd = resp;
for (i = 0; i < wait_len; i++) {
if (resp < 1) {
resp = diskCmdSPI(CMD55, 0);
if (resp == 0xff)return DISK_ERR_INIT + 8;
if (resp != 1)continue;
resp = diskCmdSPI(CMD41, 0);
if (resp == 0xff)return DISK_ERR_INIT + 9;
if (resp != 0)continue;
} else {
resp = diskCmdSPI(CMD1, 0);
if (resp != 0)continue;
}
break;
}
if (i == wait_len)return DISK_ERR_INIT + 10;
}
memSpiSetSpeed(SPI_SPEED_25);
return 0;
}
u8 diskReadSPI(u32 saddr, void *buff, u16 slen) {
u8 resp;
if (!(card_type & 1))saddr *= 512;
resp = diskCmdSPI(CMD18, saddr);
if (resp != 0)return DISK_ERR_RD1;
memSpiSSOn();
resp = memSpiRead(buff, slen);
memSpiSSOff();
diskCmdSPI(CMD12, 0);
return resp;
}
u8 diskWriteSPI(u32 saddr, u8 *buff, u16 slen) {
u8 resp;
u16 i;
if (!(card_type & 1))saddr *= 512;
resp = diskCmdSPI(CMD25, saddr);
if (resp != 0)return DISK_ERR_WR1;
memSpiSSOn();
while (slen--) {
mem_spi(0xff);
mem_spi(0xff);
mem_spi(0xfc);
memSpiWrite(buff);
mem_spi(0xff);
mem_spi(0xff);
resp = mem_spi(0xff);
//resp = mem_spi(0xff);
buff += 512;
if ((resp & 0x1f) != 0x05) {
memSpiSSOff();
return DISK_ERR_WRX;
}
for (i = 0; i < 65535; i++) {
if (mem_spi(0xff) == 0xff)break;
if (mem_spi(0xff) == 0xff)break;
if (mem_spi(0xff) == 0xff)break;
if (mem_spi(0xff) == 0xff)break;
}
if (i == 65535) {
memSpiSSOff();
return DISK_ERR_WR2;
}
}
mem_spi(0xfd);
mem_spi(0xff);
for (i = 0; i < 65535; i++) {
if ((mem_spi(0xff) & 1) != 0)break;
if ((mem_spi(0xff) & 1) != 0)break;
if ((mem_spi(0xff) & 1) != 0)break;
if ((mem_spi(0xff) & 1) != 0)break;
}
memSpiSSOff();
if (i == 65535) return DISK_ERR_WR3;
return 0;
}
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