mirror of
https://github.com/parasyte/alt64
synced 2024-12-12 02:32:16 -05:00
712 lines
16 KiB
C
712 lines
16 KiB
C
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#include <console.h>
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#include "disk.h"
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#include "mem.h"
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#include "everdrive.h"
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#include "errors.h"
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#include "sys.h"
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#include "usb.h"
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#define CMD0 0x40 // software reset
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#define CMD1 0x41 // brings card out of idle state
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#define CMD8 0x48 // Reserved
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#define CMD12 0x4C // stop transmission on multiple block read
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#define CMD17 0x51 // read single block
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#define CMD18 0x52 // read multiple block
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#define CMD58 0x7A // reads the OCR register
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#define CMD55 0x77
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#define CMD41 0x69
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#define CMD24 0x58 // writes a single block
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#define CMD25 0x59 // writes a multi block
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#define ACMD41 0x69
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#define ACMD6 0x46
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#define SD_V2 2
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#define SD_HC 1
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#define CMD2 0x42 //read cid
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#define CMD3 0x43 //read rca
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#define CMD7 0x47
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#define CMD9 0x49
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#define CMD6 0x46
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#define R1 1
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#define R2 2
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#define R3 3
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#define R6 6
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#define R7 7
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u8 card_type;
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u8 sd_resp_buff[18];
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u32 disk_interface;
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unsigned int diskCrc7(unsigned char *buff, unsigned int len);
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void diskCrc16SD(u8 *data, u16 *crc_out, u16 len);
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u8 diskGetRespTypeSD(u8 cmd);
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u8 diskCmdSD(u8 cmd, u32 arg);
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u8 diskInitSD();
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u8 diskReadSD(u32 saddr, void *buff, u16 slen);
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u8 diskWriteSD(u32 saddr, u8 *buff, u16 slen);
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u8 diskStopRwSD();
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u8 diskCmdSPI(u8 cmd, u32 arg);
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u8 diskInitSPI();
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u8 diskReadSPI(u32 saddr, void *buff, u16 slen);
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u8 diskWriteSPI(u32 saddr, u8 *buff, u16 slen);
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const u16 sd_crc16_table[] = {
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0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
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0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
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0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
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0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
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0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
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0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
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0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
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0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
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0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
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0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
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0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
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0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
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0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
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0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
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0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
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0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
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0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
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0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
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0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
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0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
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0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
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0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
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0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
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0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
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0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
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0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
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0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
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0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
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0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
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0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
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0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
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0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
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};
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void diskSetInterface(u32 interface) {
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disk_interface = interface;
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}
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u8 diskGetInterface() {
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return disk_interface;
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}
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u8 diskInit() {
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if (disk_interface == DISK_IFACE_SD) {
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return diskInitSD();
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} else {
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return diskInitSPI();
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}
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}
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u8 diskRead(u32 saddr, void *buff, u16 slen) {
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if (disk_interface == DISK_IFACE_SD) {
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return diskReadSD(saddr, buff, slen);
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} else {
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return diskReadSPI(saddr, buff, slen);
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}
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}
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u8 diskWrite(u32 saddr, u8 *buff, u16 slen) {
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if (disk_interface == DISK_IFACE_SD) {
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return diskWriteSD(saddr, buff, slen);
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} else {
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return diskWriteSPI(saddr, buff, slen);
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}
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}
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void diskCrc16SD(u8 *data, u16 *crc_out, u16 len) {
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///u16 len = 512;
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u16 i, tmp1, u;
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u8 dat[4];
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u8 dat_tmp;
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u16 crc_buff[4];
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for (i = 0; i < 4; i++)crc_buff[i] = 0;
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for (i = 0; i < 4; i++)crc_out[i] = 0;
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//u16 dptr = 0;
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while (len) {
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len -= 4;
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for (i = 0; i < 4; i++)dat[i] = 0;
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for (u = 0; u < 4; u++) {
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dat_tmp = data[3 - u];
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//dat_tmp = 0xff;
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for (i = 0; i < 4; i++) {
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dat[i] >>= 1;
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dat[i] |= (dat_tmp & 1) << 7;
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dat_tmp >>= 1;
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}
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for (i = 0; i < 4; i++) {
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dat[i] >>= 1;
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dat[i] |= (dat_tmp & 1) << 7;
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dat_tmp >>= 1;
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}
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}
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data += 4;
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for (u = 0; u < 4; u++) {
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tmp1 = crc_buff[u];
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crc_buff[u] = sd_crc16_table[(tmp1 >> 8) ^ dat[u]];
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crc_buff[u] = crc_buff[u] ^ (tmp1 << 8);
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}
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}
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for (i = 0; i < 4 * 16; i++) {
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crc_out[3 - i / 16] >>= 1;
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crc_out[3 - i / 16] |= (crc_buff[i % 4] & 1) << 15;
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crc_buff[i % 4] >>= 1;
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}
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}
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unsigned int diskCrc7(unsigned char *buff, unsigned int len) {
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unsigned int a, crc = 0;
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while (len--) {
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crc ^= *buff++;
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a = 8;
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do {
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crc <<= 1;
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if (crc & (1 << 8)) crc ^= 0x12;
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} while (--a);
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}
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return (crc & 0xfe);
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}
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u8 diskGetRespTypeSD(u8 cmd) {
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switch (cmd) {
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case CMD3:
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return R6;
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case CMD8:
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return R7;
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case CMD2:
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case CMD9:
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return R2;
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case CMD58:
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case CMD41:
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return R3;
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default: return R1;
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}
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}
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u8 diskCmdSD(u8 cmd, u32 arg) {
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u8 resp_type = diskGetRespTypeSD(cmd);
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u8 p = 0;
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u8 buff[6];
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volatile u8 resp;
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volatile u32 i = 0;
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u8 resp_len = resp_type == R2 ? 17 : 6;
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u8 crc;
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buff[p++] = cmd;
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buff[p++] = (arg >> 24);
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buff[p++] = (arg >> 16);
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buff[p++] = (arg >> 8);
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buff[p++] = (arg >> 0);
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crc = diskCrc7(buff, 5) | 1;
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evd_SDcmdWriteMode(0);
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mem_spi(0xff);
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mem_spi(cmd);
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mem_spi(arg >> 24);
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mem_spi(arg >> 16);
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mem_spi(arg >> 8);
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mem_spi(arg);
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mem_spi(crc);
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evd_SDcmdReadMode(1);
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i = 0;
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resp = 0xff;
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while ((resp & 192) != 0) {
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resp = mem_spi(resp);
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if (i++ == WAIT)return SD_CMD_TIMEOUT;
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}
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evd_SDcmdReadMode(0);
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sd_resp_buff[0] = resp;
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for (i = 1; i < resp_len; i++) {
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sd_resp_buff[i] = mem_spi(0xff);
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}
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if (resp_type != R3) {
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if (resp_type == R2) {
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crc = diskCrc7(sd_resp_buff + 1, resp_len - 2) | 1;
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} else {
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crc = diskCrc7(sd_resp_buff, resp_len - 1) | 1;
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}
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if (crc != sd_resp_buff[resp_len - 1])return SD_CMD_CRC_ERROR;
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}
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return 0;
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}
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u8 diskInitSD() {
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u16 i;
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volatile u8 resp = 0;
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u32 rca;
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u32 wait_len = WAIT;
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card_type = 0;
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evd_enableSDMode();
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memSpiSSOff();
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memSpiSetSpeed(SPI_SPEED_INIT);
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evd_SDcmdWriteMode(0);
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for (i = 0; i < 40; i++)mem_spi(0xff);
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resp = diskCmdSD(CMD0, 0x1aa);
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for (i = 0; i < 40; i++)mem_spi(0xff);
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resp = diskCmdSD(CMD8, 0x1aa);
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if (resp != 0 && resp != SD_CMD_TIMEOUT) {
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return SD_INIT_ERROR + 0;
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}
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if (resp == 0)card_type |= SD_V2;
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if (card_type == SD_V2) {
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for (i = 0; i < wait_len; i++) {
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resp = diskCmdSD(CMD55, 0);
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if (resp)return SD_INIT_ERROR + 1;
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if ((sd_resp_buff[3] & 1) != 1)continue;
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resp = diskCmdSD(CMD41, 0x40300000);
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if ((sd_resp_buff[1] & 128) == 0)continue;
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break;
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}
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} else {
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i = 0;
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do {
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resp = diskCmdSD(CMD55, 0);
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if (resp)return SD_INIT_ERROR + 2;
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resp = diskCmdSD(CMD41, 0x40300000);
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if (resp)return SD_INIT_ERROR + 3;
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} while (sd_resp_buff[1] < 1 && i++ < wait_len);
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}
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if (i == wait_len)return SD_INIT_ERROR + 4;
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if ((sd_resp_buff[1] & 64) && card_type != 0)card_type |= SD_HC;
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resp = diskCmdSD(CMD2, 0);
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if (resp)return SD_INIT_ERROR + 5;
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resp = diskCmdSD(CMD3, 0);
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if (resp)return SD_INIT_ERROR + 6;
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resp = diskCmdSD(CMD7, 0);
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//if (resp)return resp;
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rca = (sd_resp_buff[1] << 24) | (sd_resp_buff[2] << 16) | (sd_resp_buff[3] << 8) | (sd_resp_buff[4] << 0);
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resp = diskCmdSD(CMD9, rca); //get csd
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if (resp)return SD_INIT_ERROR + 7;
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resp = diskCmdSD(CMD7, rca);
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if (resp)return SD_INIT_ERROR + 8;
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resp = diskCmdSD(CMD55, rca);
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if (resp)return SD_INIT_ERROR + 9;
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resp = diskCmdSD(CMD6, 2);
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if (resp)return SD_INIT_ERROR + 10;
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memSpiSetSpeed(SPI_SPEED_25);
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return 0;
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}
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u8 diskReadSD(u32 saddr, void *buff, u16 slen) {
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u8 resp;
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if (!(card_type & 1))saddr *= 512;
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resp = diskCmdSD(CMD18, saddr);
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if (resp)return DISK_ERR_RD1;
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resp = memSpiRead(buff, slen);
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if (resp)return resp;
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//console_printf("drd: %0X\n", saddr);
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resp = diskStopRwSD();
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return resp;
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}
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u8 diskStopRwSD() {
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u8 resp;
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u16 i;
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resp = diskCmdSD(CMD12, 0);
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if (resp)return DISK_ERR_CLOSE_RW1;
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evd_SDdatReadMode(0);
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mem_spi(0xff);
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i = 65535;
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while (i--) {
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if (mem_spi(0xff) == 0xff)break;
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if (mem_spi(0xff) == 0xff)break;
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if (mem_spi(0xff) == 0xff)break;
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if (mem_spi(0xff) == 0xff)break;
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}
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if (i == 0)return DISK_ERR_CLOSE_RW2;
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return 0;
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}
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u8 diskWriteSD(u32 saddr, u8 *buff, u16 slen) {
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u8 resp;
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u16 crc16[5];
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u16 i;
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u16 u;
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u8 ram_buff[512];
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u8 *buff_ptr;
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if (!(card_type & 1))saddr *= 512;
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resp = diskCmdSD(CMD25, saddr);
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if (resp)return DISK_ERR_WR1;
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evd_SDdatWriteMode(0);
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while (slen--) {
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if ((u32) buff >= ROM_ADDR && (u32) buff < ROM_END_ADDR) {
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dma_read_s(ram_buff, (u32) buff, 512);
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buff_ptr = ram_buff;
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} else {
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buff_ptr = buff;
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}
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diskCrc16SD(buff_ptr, crc16, 512);
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evd_SDdatWriteMode(0);
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mem_spi(0xff);
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mem_spi(0xf0);
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memSpiWrite(buff_ptr);
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for (i = 0; i < 4; i++) {
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mem_spi(crc16[i] >> 8);
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mem_spi(crc16[i] & 0xff);
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}
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buff += 512;
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evd_SDdatWriteMode(1);
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mem_spi(0xff);
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evd_SDdatReadMode(1);
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i = 1024;
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while ((mem_spi(0xff) & 1) != 0 && i-- != 0);
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if (i == 0)return DISK_WR_SB_TOUT;
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resp = 0;
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for (i = 0; i < 3; i++) {
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resp <<= 1;
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u = mem_spi(0xff);
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resp |= u & 1;
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}
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resp &= 7;
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if (resp != 0x02) {
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//console_printf("error blia: %0X\n", resp);
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// joyWait();
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if (resp == 5)return DISK_ERR_WR_CRC;
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return DISK_ERR_WRX;
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}
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evd_SDdatReadMode(0);
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mem_spi(0xff);
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i = 65535;
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while (i--) {
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if (mem_spi(0xff) == 0xff)break;
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if (mem_spi(0xff) == 0xff)break;
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}
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if (i == 0)return DISK_ERR_WR2;
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}
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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;
|
|
}
|