2 * Copyright 2008,2010 Freescale Semiconductor, Inc
5 * Based (loosely) on the Linux code
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <linux/list.h>
30 #include <linux/compiler.h>
32 #define SD_VERSION_SD 0x20000
33 #define SD_VERSION_3 (SD_VERSION_SD | 0x300)
34 #define SD_VERSION_2 (SD_VERSION_SD | 0x200)
35 #define SD_VERSION_1_0 (SD_VERSION_SD | 0x100)
36 #define SD_VERSION_1_10 (SD_VERSION_SD | 0x10a)
37 #define MMC_VERSION_MMC 0x10000
38 #define MMC_VERSION_UNKNOWN (MMC_VERSION_MMC)
39 #define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x102)
40 #define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x104)
41 #define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x202)
42 #define MMC_VERSION_3 (MMC_VERSION_MMC | 0x300)
43 #define MMC_VERSION_4 (MMC_VERSION_MMC | 0x400)
44 #define MMC_VERSION_4_1 (MMC_VERSION_MMC | 0x401)
45 #define MMC_VERSION_4_2 (MMC_VERSION_MMC | 0x402)
46 #define MMC_VERSION_4_3 (MMC_VERSION_MMC | 0x403)
47 #define MMC_VERSION_4_41 (MMC_VERSION_MMC | 0x429)
48 #define MMC_VERSION_4_5 (MMC_VERSION_MMC | 0x405)
50 #define MMC_MODE_HS 0x001
51 #define MMC_MODE_HS_52MHz 0x010
52 #define MMC_MODE_4BIT 0x100
53 #define MMC_MODE_8BIT 0x200
54 #define MMC_MODE_SPI 0x400
55 #define MMC_MODE_HC 0x800
57 #define MMC_MODE_MASK_WIDTH_BITS (MMC_MODE_4BIT | MMC_MODE_8BIT)
58 #define MMC_MODE_WIDTH_BITS_SHIFT 8
60 #define SD_DATA_4BIT 0x00040000
62 #define IS_SD(x) (x->version & SD_VERSION_SD)
64 #define MMC_DATA_READ 1
65 #define MMC_DATA_WRITE 2
67 #define NO_CARD_ERR -16 /* No SD/MMC card inserted */
68 #define UNUSABLE_ERR -17 /* Unusable Card */
69 #define COMM_ERR -18 /* Communications Error */
71 #define IN_PROGRESS -20 /* operation is in progress */
73 #define MMC_CMD_GO_IDLE_STATE 0
74 #define MMC_CMD_SEND_OP_COND 1
75 #define MMC_CMD_ALL_SEND_CID 2
76 #define MMC_CMD_SET_RELATIVE_ADDR 3
77 #define MMC_CMD_SET_DSR 4
78 #define MMC_CMD_SWITCH 6
79 #define MMC_CMD_SELECT_CARD 7
80 #define MMC_CMD_SEND_EXT_CSD 8
81 #define MMC_CMD_SEND_CSD 9
82 #define MMC_CMD_SEND_CID 10
83 #define MMC_CMD_STOP_TRANSMISSION 12
84 #define MMC_CMD_SEND_STATUS 13
85 #define MMC_CMD_SET_BLOCKLEN 16
86 #define MMC_CMD_READ_SINGLE_BLOCK 17
87 #define MMC_CMD_READ_MULTIPLE_BLOCK 18
88 #define MMC_CMD_WRITE_SINGLE_BLOCK 24
89 #define MMC_CMD_WRITE_MULTIPLE_BLOCK 25
90 #define MMC_CMD_ERASE_GROUP_START 35
91 #define MMC_CMD_ERASE_GROUP_END 36
92 #define MMC_CMD_ERASE 38
93 #define MMC_CMD_APP_CMD 55
94 #define MMC_CMD_SPI_READ_OCR 58
95 #define MMC_CMD_SPI_CRC_ON_OFF 59
97 #define SD_CMD_SEND_RELATIVE_ADDR 3
98 #define SD_CMD_SWITCH_FUNC 6
99 #define SD_CMD_SEND_IF_COND 8
101 #define SD_CMD_APP_SET_BUS_WIDTH 6
102 #define SD_CMD_ERASE_WR_BLK_START 32
103 #define SD_CMD_ERASE_WR_BLK_END 33
104 #define SD_CMD_APP_SEND_OP_COND 41
105 #define SD_CMD_APP_SEND_SCR 51
107 /* SCR definitions in different words */
108 #define SD_HIGHSPEED_BUSY 0x00020000
109 #define SD_HIGHSPEED_SUPPORTED 0x00020000
111 #define MMC_HS_TIMING 0x00000100
112 #define MMC_HS_52MHZ 0x2
114 #define OCR_BUSY 0x80000000
115 #define OCR_HCS 0x40000000
116 #define OCR_VOLTAGE_MASK 0x007FFF80
117 #define OCR_ACCESS_MODE 0x60000000
119 #define SECURE_ERASE 0x80000000
121 #define MMC_STATUS_MASK (~0x0206BF7F)
122 #define MMC_STATUS_RDY_FOR_DATA (1 << 8)
123 #define MMC_STATUS_CURR_STATE (0xf << 9)
124 #define MMC_STATUS_ERROR (1 << 19)
126 #define MMC_STATE_PRG (7 << 9)
128 #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
129 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
130 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
131 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
132 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
133 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
134 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
135 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
136 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
137 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
138 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
139 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
140 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
141 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
142 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
143 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
144 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
146 #define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
147 #define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits in EXT_CSD byte
148 addressed by index which are
150 #define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits in EXT_CSD byte
151 addressed by index, which are
153 #define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target byte to value */
155 #define SD_SWITCH_CHECK 0
156 #define SD_SWITCH_SWITCH 1
161 #define EXT_CSD_GP_SIZE_MULT 143 /* R/W */
162 #define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */
163 #define EXT_CSD_RPMB_MULT 168 /* RO */
164 #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
165 #define EXT_CSD_PART_CONF 179 /* R/W */
166 #define EXT_CSD_BUS_WIDTH 183 /* R/W */
167 #define EXT_CSD_HS_TIMING 185 /* R/W */
168 #define EXT_CSD_REV 192 /* RO */
169 #define EXT_CSD_CARD_TYPE 196 /* RO */
170 #define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
171 #define EXT_CSD_HC_WP_GRP_SIZE 221 /* RO */
172 #define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */
173 #define EXT_CSD_BOOT_MULT 226 /* RO */
176 * EXT_CSD field definitions
179 #define EXT_CSD_CMD_SET_NORMAL (1 << 0)
180 #define EXT_CSD_CMD_SET_SECURE (1 << 1)
181 #define EXT_CSD_CMD_SET_CPSECURE (1 << 2)
183 #define EXT_CSD_CARD_TYPE_26 (1 << 0) /* Card can run at 26MHz */
184 #define EXT_CSD_CARD_TYPE_52 (1 << 1) /* Card can run at 52MHz */
186 #define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
187 #define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
188 #define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
190 #define R1_ILLEGAL_COMMAND (1 << 22)
191 #define R1_APP_CMD (1 << 5)
193 #define MMC_RSP_PRESENT (1 << 0)
194 #define MMC_RSP_136 (1 << 1) /* 136 bit response */
195 #define MMC_RSP_CRC (1 << 2) /* expect valid crc */
196 #define MMC_RSP_BUSY (1 << 3) /* card may send busy */
197 #define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
199 #define MMC_RSP_NONE (0)
200 #define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
201 #define MMC_RSP_R1b (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \
203 #define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
204 #define MMC_RSP_R3 (MMC_RSP_PRESENT)
205 #define MMC_RSP_R4 (MMC_RSP_PRESENT)
206 #define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
207 #define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
208 #define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
210 #define MMCPART_NOAVAILABLE (0xff)
211 #define PART_ACCESS_MASK (0x7)
212 #define PART_SUPPORT (0x1)
214 /* Maximum block size for MMC */
215 #define MMC_MAX_BLOCK_LEN 512
236 const char *src; /* src buffers don't get written to */
244 struct list_head link;
273 block_dev_desc_t block_dev;
274 int (*send_cmd)(struct mmc *mmc,
275 struct mmc_cmd *cmd, struct mmc_data *data);
276 void (*set_ios)(struct mmc *mmc);
277 int (*init)(struct mmc *mmc);
278 int (*getcd)(struct mmc *mmc);
279 int (*getwp)(struct mmc *mmc);
281 char op_cond_pending; /* 1 if we are waiting on an op_cond command */
282 char init_in_progress; /* 1 if we have done mmc_start_init() */
283 char preinit; /* start init as early as possible */
284 uint op_cond_response; /* the response byte from the last op_cond */
287 int mmc_register(struct mmc *mmc);
288 int mmc_initialize(bd_t *bis);
289 int mmc_init(struct mmc *mmc);
290 int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
291 void mmc_set_clock(struct mmc *mmc, uint clock);
292 struct mmc *find_mmc_device(int dev_num);
293 int mmc_set_dev(int dev_num);
294 void print_mmc_devices(char separator);
295 int get_mmc_num(void);
296 int board_mmc_getcd(struct mmc *mmc);
297 int mmc_switch_part(int dev_num, unsigned int part_num);
298 int mmc_getcd(struct mmc *mmc);
299 int mmc_getwp(struct mmc *mmc);
300 void spl_mmc_load(void) __noreturn;
303 * Start device initialization and return immediately; it does not block on
304 * polling OCR (operation condition register) status. Then you should call
305 * mmc_init, which would block on polling OCR status and complete the device
308 * @param mmc Pointer to a MMC device struct
309 * @return 0 on success, IN_PROGRESS on waiting for OCR status, <0 on error.
311 int mmc_start_init(struct mmc *mmc);
314 * Set preinit flag of mmc device.
316 * This will cause the device to be pre-inited during mmc_initialize(),
317 * which may save boot time if the device is not accessed until later.
318 * Some eMMC devices take 200-300ms to init, but unfortunately they
319 * must be sent a series of commands to even get them to start preparing
322 * @param mmc Pointer to a MMC device struct
323 * @param preinit preinit flag value
325 void mmc_set_preinit(struct mmc *mmc, int preinit);
327 #ifdef CONFIG_GENERIC_MMC
328 #define mmc_host_is_spi(mmc) ((mmc)->host_caps & MMC_MODE_SPI)
329 struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode);
331 int mmc_legacy_init(int verbose);