1 /*
2 * Copyright (c) 2015-2020, Renesas Electronics Corporation. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <common/debug.h>
8
9 #include "emmc_config.h"
10 #include "emmc_def.h"
11 #include "emmc_hal.h"
12 #include "emmc_registers.h"
13 #include "emmc_std.h"
14
15 static const uint32_t cmd_reg_hw[EMMC_CMD_MAX + 1] = {
16 0x00000000, /* CMD0 */
17 0x00000701, /* CMD1 */
18 0x00000002, /* CMD2 */
19 0x00000003, /* CMD3 */
20 0x00000004, /* CMD4 */
21 0x00000505, /* CMD5 */
22 0x00000406, /* CMD6 */
23 0x00000007, /* CMD7 */
24 0x00001C08, /* CMD8 */
25 0x00000009, /* CMD9 */
26 0x0000000A, /* CMD10 */
27 0x00000000, /* reserved */
28 0x0000000C, /* CMD12 */
29 0x0000000D, /* CMD13 */
30 0x00001C0E, /* CMD14 */
31 0x0000000F, /* CMD15 */
32 0x00000010, /* CMD16 */
33 0x00000011, /* CMD17 */
34 0x00007C12, /* CMD18 */
35 0x00000C13, /* CMD19 */
36 0x00000000,
37 0x00001C15, /* CMD21 */
38 0x00000000,
39 0x00000017, /* CMD23 */
40 0x00000018, /* CMD24 */
41 0x00006C19, /* CMD25 */
42 0x00000C1A, /* CMD26 */
43 0x0000001B, /* CMD27 */
44 0x0000001C, /* CMD28 */
45 0x0000001D, /* CMD29 */
46 0x0000001E, /* CMD30 */
47 0x00001C1F, /* CMD31 */
48 0x00000000,
49 0x00000000,
50 0x00000000,
51 0x00000423, /* CMD35 */
52 0x00000424, /* CMD36 */
53 0x00000000,
54 0x00000026, /* CMD38 */
55 0x00000427, /* CMD39 */
56 0x00000428, /* CMD40(send cmd) */
57 0x00000000,
58 0x0000002A, /* CMD42 */
59 0x00000000,
60 0x00000000,
61 0x00000000,
62 0x00000000,
63 0x00000000,
64 0x00000000,
65 0x00000C31,
66 0x00000000,
67 0x00000000,
68 0x00000000,
69 0x00007C35,
70 0x00006C36,
71 0x00000037, /* CMD55 */
72 0x00000038, /* CMD56(Read) */
73 0x00000000,
74 0x00000000,
75 0x00000000,
76 0x00000000
77 };
78
emmc_bit_field(uint8_t * data,uint32_t top,uint32_t bottom)79 uint32_t emmc_bit_field(uint8_t *data, uint32_t top, uint32_t bottom)
80 {
81 uint32_t value;
82
83 uint32_t index_top = (uint32_t) (15 - (top >> 3));
84 uint32_t index_bottom = (uint32_t) (15 - (bottom >> 3));
85
86 if (index_top == index_bottom) {
87 value = data[index_top];
88 } else if ((index_top + 1) == index_bottom) {
89 value =
90 (uint32_t) ((data[index_top] << 8) | data[index_bottom]);
91 } else if ((index_top + 2) == index_bottom) {
92 value =
93 (uint32_t) ((data[index_top] << 16) |
94 (data[index_top + 1] << 8) | data[index_top +
95 2]);
96 } else {
97 value =
98 (uint32_t) ((data[index_top] << 24) |
99 (data[index_top + 1] << 16) |
100 (data[index_top + 2] << 8) |
101 data[index_top + 3]);
102 }
103
104 value = ((value >> (bottom & 0x07)) & ((1 << (top - bottom + 1)) - 1));
105
106 return value;
107 }
108
emmc_write_error_info(uint16_t func_no,EMMC_ERROR_CODE error_code)109 void emmc_write_error_info(uint16_t func_no, EMMC_ERROR_CODE error_code)
110 {
111
112 mmc_drv_obj.error_info.num = func_no;
113 mmc_drv_obj.error_info.code = (uint16_t) error_code;
114
115 ERROR("BL2: emmc err:func_no=0x%x code=0x%x\n", func_no, error_code);
116 }
117
emmc_write_error_info_func_no(uint16_t func_no)118 void emmc_write_error_info_func_no(uint16_t func_no)
119 {
120
121 mmc_drv_obj.error_info.num = func_no;
122
123 ERROR("BL2: emmc err:func_no=0x%x\n", func_no);
124 }
125
emmc_make_nontrans_cmd(HAL_MEMCARD_COMMAND cmd,uint32_t arg)126 void emmc_make_nontrans_cmd(HAL_MEMCARD_COMMAND cmd, uint32_t arg)
127 {
128 /* command information */
129 mmc_drv_obj.cmd_info.cmd = cmd;
130 mmc_drv_obj.cmd_info.arg = arg;
131 mmc_drv_obj.cmd_info.dir = HAL_MEMCARD_READ;
132 mmc_drv_obj.cmd_info.hw =
133 cmd_reg_hw[cmd & HAL_MEMCARD_COMMAND_INDEX_MASK];
134
135 /* clear data transfer information */
136 mmc_drv_obj.trans_size = 0;
137 mmc_drv_obj.remain_size = 0;
138 mmc_drv_obj.buff_address_virtual = NULL;
139 mmc_drv_obj.buff_address_physical = NULL;
140
141 /* response information */
142 mmc_drv_obj.response_length = 6;
143
144 switch (mmc_drv_obj.cmd_info.cmd & HAL_MEMCARD_RESPONSE_TYPE_MASK) {
145 case HAL_MEMCARD_RESPONSE_NONE:
146 mmc_drv_obj.response = (uint32_t *) mmc_drv_obj.response_data;
147 mmc_drv_obj.response_length = 0;
148 break;
149 case HAL_MEMCARD_RESPONSE_R1:
150 mmc_drv_obj.response = &mmc_drv_obj.r1_card_status;
151 break;
152 case HAL_MEMCARD_RESPONSE_R1b:
153 mmc_drv_obj.cmd_info.hw |= BIT10; /* bit10 = R1 busy bit */
154 mmc_drv_obj.response = &mmc_drv_obj.r1_card_status;
155 break;
156 case HAL_MEMCARD_RESPONSE_R2:
157 mmc_drv_obj.response = (uint32_t *) mmc_drv_obj.response_data;
158 mmc_drv_obj.response_length = 17;
159 break;
160 case HAL_MEMCARD_RESPONSE_R3:
161 mmc_drv_obj.response = &mmc_drv_obj.r3_ocr;
162 break;
163 case HAL_MEMCARD_RESPONSE_R4:
164 mmc_drv_obj.response = &mmc_drv_obj.r4_resp;
165 break;
166 case HAL_MEMCARD_RESPONSE_R5:
167 mmc_drv_obj.response = &mmc_drv_obj.r5_resp;
168 break;
169 default:
170 mmc_drv_obj.response = (uint32_t *) mmc_drv_obj.response_data;
171 break;
172 }
173 }
174
emmc_make_trans_cmd(HAL_MEMCARD_COMMAND cmd,uint32_t arg,uint32_t * buff_address_virtual,uint32_t len,HAL_MEMCARD_OPERATION dir,HAL_MEMCARD_DATA_TRANSFER_MODE transfer_mode)175 void emmc_make_trans_cmd(HAL_MEMCARD_COMMAND cmd, uint32_t arg,
176 uint32_t *buff_address_virtual,
177 uint32_t len,
178 HAL_MEMCARD_OPERATION dir,
179 HAL_MEMCARD_DATA_TRANSFER_MODE transfer_mode)
180 {
181 emmc_make_nontrans_cmd(cmd, arg); /* update common information */
182
183 /* for data transfer command */
184 mmc_drv_obj.cmd_info.dir = dir;
185 mmc_drv_obj.buff_address_virtual = buff_address_virtual;
186 mmc_drv_obj.buff_address_physical = buff_address_virtual;
187 mmc_drv_obj.trans_size = len;
188 mmc_drv_obj.remain_size = len;
189 mmc_drv_obj.transfer_mode = transfer_mode;
190 }
191
emmc_send_idle_cmd(uint32_t arg)192 EMMC_ERROR_CODE emmc_send_idle_cmd(uint32_t arg)
193 {
194 EMMC_ERROR_CODE result;
195 uint32_t freq;
196
197 /* initialize state */
198 mmc_drv_obj.mount = FALSE;
199 mmc_drv_obj.selected = FALSE;
200 mmc_drv_obj.during_transfer = FALSE;
201 mmc_drv_obj.during_cmd_processing = FALSE;
202 mmc_drv_obj.during_dma_transfer = FALSE;
203 mmc_drv_obj.dma_error_flag = FALSE;
204 mmc_drv_obj.force_terminate = FALSE;
205 mmc_drv_obj.state_machine_blocking = FALSE;
206
207 mmc_drv_obj.bus_width = HAL_MEMCARD_DATA_WIDTH_1_BIT;
208 mmc_drv_obj.max_freq = MMC_20MHZ; /* 20MHz */
209 mmc_drv_obj.current_state = EMMC_R1_STATE_IDLE;
210
211 /* CMD0 (MMC clock is current frequency. if Data transfer mode, 20MHz or higher.) */
212 emmc_make_nontrans_cmd(CMD0_GO_IDLE_STATE, arg); /* CMD0 */
213 result = emmc_exec_cmd(EMMC_R1_ERROR_MASK, mmc_drv_obj.response);
214 if (result != EMMC_SUCCESS) {
215 return result;
216 }
217
218 /* change MMC clock(400KHz) */
219 freq = MMC_400KHZ;
220 result = emmc_set_request_mmc_clock(&freq);
221 if (result != EMMC_SUCCESS) {
222 return result;
223 }
224
225 return EMMC_SUCCESS;
226 }
227