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_2 (SD_VERSION_SD | 0x20)
34 #define SD_VERSION_1_0 (SD_VERSION_SD | 0x10)
35 #define SD_VERSION_1_10 (SD_VERSION_SD | 0x1a)
36 #define MMC_VERSION_MMC 0x10000
37 #define MMC_VERSION_UNKNOWN (MMC_VERSION_MMC)
38 #define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x12)
39 #define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x14)
40 #define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x22)
41 #define MMC_VERSION_3 (MMC_VERSION_MMC | 0x30)
42 #define MMC_VERSION_4 (MMC_VERSION_MMC | 0x40)
44 #define MMC_MODE_HS 0x001
45 #define MMC_MODE_HS_52MHz 0x010
46 #define MMC_MODE_4BIT 0x100
47 #define MMC_MODE_8BIT 0x200
48 #define MMC_MODE_SPI 0x400
49 #define MMC_MODE_HC 0x800
51 #define MMC_MODE_MASK_WIDTH_BITS (MMC_MODE_4BIT | MMC_MODE_8BIT)
52 #define MMC_MODE_WIDTH_BITS_SHIFT 8
54 #define SD_DATA_4BIT 0x00040000
56 #define IS_SD(x) (x->version & SD_VERSION_SD)
58 #define MMC_DATA_READ 1
59 #define MMC_DATA_WRITE 2
61 #define NO_CARD_ERR -16 /* No SD/MMC card inserted */
62 #define UNUSABLE_ERR -17 /* Unusable Card */
63 #define COMM_ERR -18 /* Communications Error */
66 #define MMC_CMD_GO_IDLE_STATE 0
67 #define MMC_CMD_SEND_OP_COND 1
68 #define MMC_CMD_ALL_SEND_CID 2
69 #define MMC_CMD_SET_RELATIVE_ADDR 3
70 #define MMC_CMD_SET_DSR 4
71 #define MMC_CMD_SWITCH 6
72 #define MMC_CMD_SELECT_CARD 7
73 #define MMC_CMD_SEND_EXT_CSD 8
74 #define MMC_CMD_SEND_CSD 9
75 #define MMC_CMD_SEND_CID 10
76 #define MMC_CMD_STOP_TRANSMISSION 12
77 #define MMC_CMD_SEND_STATUS 13
78 #define MMC_CMD_SET_BLOCKLEN 16
79 #define MMC_CMD_READ_SINGLE_BLOCK 17
80 #define MMC_CMD_READ_MULTIPLE_BLOCK 18
81 #define MMC_CMD_WRITE_SINGLE_BLOCK 24
82 #define MMC_CMD_WRITE_MULTIPLE_BLOCK 25
83 #define MMC_CMD_ERASE_GROUP_START 35
84 #define MMC_CMD_ERASE_GROUP_END 36
85 #define MMC_CMD_ERASE 38
86 #define MMC_CMD_APP_CMD 55
87 #define MMC_CMD_SPI_READ_OCR 58
88 #define MMC_CMD_SPI_CRC_ON_OFF 59
90 #define SD_CMD_SEND_RELATIVE_ADDR 3
91 #define SD_CMD_SWITCH_FUNC 6
92 #define SD_CMD_SEND_IF_COND 8
94 #define SD_CMD_APP_SET_BUS_WIDTH 6
95 #define SD_CMD_ERASE_WR_BLK_START 32
96 #define SD_CMD_ERASE_WR_BLK_END 33
97 #define SD_CMD_APP_SEND_OP_COND 41
98 #define SD_CMD_APP_SEND_SCR 51
100 /* SCR definitions in different words */
101 #define SD_HIGHSPEED_BUSY 0x00020000
102 #define SD_HIGHSPEED_SUPPORTED 0x00020000
104 #define MMC_HS_TIMING 0x00000100
105 #define MMC_HS_52MHZ 0x2
107 #define OCR_BUSY 0x80000000
108 #define OCR_HCS 0x40000000
109 #define OCR_VOLTAGE_MASK 0x007FFF80
110 #define OCR_ACCESS_MODE 0x60000000
112 #define SECURE_ERASE 0x80000000
114 #define MMC_STATUS_MASK (~0x0206BF7F)
115 #define MMC_STATUS_RDY_FOR_DATA (1 << 8)
116 #define MMC_STATUS_CURR_STATE (0xf << 9)
117 #define MMC_STATUS_ERROR (1 << 19)
119 #define MMC_STATE_PRG (7 << 9)
121 #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
122 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
123 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
124 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
125 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
126 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
127 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
128 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
129 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
130 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
131 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
132 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
133 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
134 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
135 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
136 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
137 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
139 #define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
140 #define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits in EXT_CSD byte
141 addressed by index which are
143 #define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits in EXT_CSD byte
144 addressed by index, which are
146 #define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target byte to value */
148 #define SD_SWITCH_CHECK 0
149 #define SD_SWITCH_SWITCH 1
154 #define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */
155 #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
156 #define EXT_CSD_PART_CONF 179 /* R/W */
157 #define EXT_CSD_BUS_WIDTH 183 /* R/W */
158 #define EXT_CSD_HS_TIMING 185 /* R/W */
159 #define EXT_CSD_REV 192 /* RO */
160 #define EXT_CSD_CARD_TYPE 196 /* RO */
161 #define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
162 #define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */
165 * EXT_CSD field definitions
168 #define EXT_CSD_CMD_SET_NORMAL (1 << 0)
169 #define EXT_CSD_CMD_SET_SECURE (1 << 1)
170 #define EXT_CSD_CMD_SET_CPSECURE (1 << 2)
172 #define EXT_CSD_CARD_TYPE_26 (1 << 0) /* Card can run at 26MHz */
173 #define EXT_CSD_CARD_TYPE_52 (1 << 1) /* Card can run at 52MHz */
175 #define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
176 #define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
177 #define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
179 #define R1_ILLEGAL_COMMAND (1 << 22)
180 #define R1_APP_CMD (1 << 5)
182 #define MMC_RSP_PRESENT (1 << 0)
183 #define MMC_RSP_136 (1 << 1) /* 136 bit response */
184 #define MMC_RSP_CRC (1 << 2) /* expect valid crc */
185 #define MMC_RSP_BUSY (1 << 3) /* card may send busy */
186 #define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
188 #define MMC_RSP_NONE (0)
189 #define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
190 #define MMC_RSP_R1b (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \
192 #define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
193 #define MMC_RSP_R3 (MMC_RSP_PRESENT)
194 #define MMC_RSP_R4 (MMC_RSP_PRESENT)
195 #define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
196 #define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
197 #define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
199 #define MMCPART_NOAVAILABLE (0xff)
200 #define PART_ACCESS_MASK (0x7)
201 #define PART_SUPPORT (0x1)
223 const char *src; /* src buffers don't get written to */
231 struct list_head link;
256 block_dev_desc_t block_dev;
257 int (*send_cmd)(struct mmc *mmc,
258 struct mmc_cmd *cmd, struct mmc_data *data);
259 void (*set_ios)(struct mmc *mmc);
260 int (*init)(struct mmc *mmc);
261 int (*getcd)(struct mmc *mmc);
265 int mmc_register(struct mmc *mmc);
266 int mmc_initialize(bd_t *bis);
267 int mmc_init(struct mmc *mmc);
268 int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
269 void mmc_set_clock(struct mmc *mmc, uint clock);
270 struct mmc *find_mmc_device(int dev_num);
271 int mmc_set_dev(int dev_num);
272 void print_mmc_devices(char separator);
273 int get_mmc_num(void);
274 int board_mmc_getcd(struct mmc *mmc);
275 int mmc_switch_part(int dev_num, unsigned int part_num);
276 int mmc_getcd(struct mmc *mmc);
277 void spl_mmc_load(void) __noreturn;
279 #ifdef CONFIG_GENERIC_MMC
280 #define mmc_host_is_spi(mmc) ((mmc)->host_caps & MMC_MODE_SPI)
281 struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode);
283 int mmc_legacy_init(int verbose);