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/*
* Copyright © 2013 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef _AO_SDCARD_H_
#define _AO_SDCARD_H_
uint8_t
ao_sdcard_read_block(uint32_t block, uint8_t *data);
uint8_t
ao_sdcard_write_block(uint32_t block, uint8_t *data);
void
ao_sdcard_init(void);
/* Commands */
#define SDCARD_GO_IDLE_STATE 0
#define SDCARD_SEND_OP_COND 1
#define SDCARD_SEND_IF_COND 8
#define SDCARD_SEND_CSD 9
#define SDCARD_SEND_CID 10
#define SDCARD_SEND_STATUS 13
#define SDCARD_SET_BLOCKLEN 16
#define SDCARD_READ_BLOCK 17
#define SDCARD_WRITE_BLOCK 24
#define SDCARD_WRITE_MULTIPLE_BLOCK 25
#define SDCARD_ERASE_WR_BLK_START 32
#define SDCARD_ERASE_WR_BLK_END 33
#define SDCARD_ERASE 38
#define SDCARD_APP_CMD 55
#define SDCARD_READ_OCR 58
/* App commands */
#define SDCARD_APP_SET_WR_BLK_ERASE_COUNT 23
#define SDCARD_APP_SEND_OP_COMD 41
/* Status */
#define SDCARD_STATUS_READY_STATE 0x00
#define SDCARD_STATUS_IDLE_STATE 0x01
#define SDCARD_STATUS_ERASE_RESET 0x02
#define SDCARD_STATUS_ILLEGAL_COMMAND 0x04
#define SDCARD_STATUS_COM_CRC_ERROR 0x08
#define SDCARD_STATUS_ERASE_SEQ_ERROR 0x10
#define SDCARD_STATUS_ADDRESS_ERROR 0x20
#define SDCARD_STATUS_PARAMETER_ERROR 0x40
#define SDCARD_STATUS_TIMEOUT 0xff
#define SDCARD_DATA_START_BLOCK 0xfe
#define SDCARD_STOP_TRAN_TOKEN 0xfd
#define SDCARD_WRITE_MULTIPLE_TOKEN 0xfc
#define SDCARD_DATA_RES_MASK 0x1f
#define SDCARD_DATA_RES_ACCEPTED 0x05
#define SDCARD_CMD_TIMEOUT AO_MS_TO_TICKS(20)
#define SDCARD_BUSY_TIMEOUT AO_MS_TO_TICKS(20)
#define SDCARD_BLOCK_TIMEOUT AO_MS_TO_TICKS(200)
#define SDCARD_IDLE_RETRY 10
#define SDCARD_OP_COND_RETRY 10
enum ao_sdtype {
ao_sdtype_unknown,
ao_sdtype_mmc3,
ao_sdtype_sd1,
ao_sdtype_sd2byte,
ao_sdtype_sd2block,
};
#endif /* _AO_SDCARD_H_ */
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