1 // ==========================================================================
6 // MMC card driver for MXC platform
8 // ==========================================================================
9 //####ECOSGPLCOPYRIGHTBEGIN####
10 // -------------------------------------------
11 // This file is part of eCos, the Embedded Configurable Operating System.
12 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
14 // eCos is free software; you can redistribute it and/or modify it under
15 // the terms of the GNU General Public License as published by the Free
16 // Software Foundation; either version 2 or (at your option) any later version.
18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
23 // You should have received a copy of the GNU General Public License along
24 // with eCos; if not, write to the Free Software Foundation, Inc.,
25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
27 // As a special exception, if other files instantiate templates or use macros
28 // or inline functions from this file, or you compile this file and link it
29 // with other works to produce a work based on this file, this file does not
30 // by itself cause the resulting work to be covered by the GNU General Public
31 // License. However the source code for this file must still be made available
32 // in accordance with section (3) of the GNU General Public License.
34 // This exception does not invalidate any other reasons why a work based on
35 // this file might be covered by the GNU General Public License.
37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
38 // at http://sources.redhat.com/ecos/ecos-license/
39 // -------------------------------------------
40 //####ECOSGPLCOPYRIGHTEND####
41 //==========================================================================
42 //#####DESCRIPTIONBEGIN####
44 // Author(s): Lewis Liu <weizhi.liu@freescale.com>
45 // Contributors: Lewis Liu <weizhi.liu@freescale.com>
46 // Date: 2008-05-13 Initial version
50 //####DESCRIPTIONEND####
52 //==========================================================================
54 #include <cyg/io/mxcmci_host.h>
55 #include <cyg/io/mxcmci_core.h>
56 #include <cyg/io/mxcmci_mmc.h>
57 #include <cyg/hal/hal_soc.h>
58 #include <cyg/io/mxc_mmc.h>
60 static cyg_uint32 csd_get_value(cyg_uint32 * pcsd, cyg_uint32 start_bit,
63 #define MMCSD_INIT_DELAY 64
65 cyg_uint32 Card_rca = 0x1; /* Relative Card Address */
66 card_ident Card_identification; /* Card Identification Data */
67 card_type Card_type; /* Card Type */
68 cyg_uint32 MMC_Spec_vers = 0x1; /* Spec vers used for MMC */
69 card_specific_data csd; /* Global variable for Card Specific Data */
70 cyg_uint32 Card_capacity_size = 0; /*Card capacity size */
71 cyg_uint32 CCC = 0; /* Card Command Class */
73 int HighCapacityCard = 0;
75 /*==========================================================================
77 ==========================================================================*/
79 cyg_uint32 mxcmci_init(cyg_uint32 bus_width, cyg_uint32 base_address)
81 cyg_uint32 init_status = FAIL;
83 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to init base address...\n",
85 /* initialize Interface Controller */
86 host_init(base_address);
87 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to software reset...\n",
90 /* Software Reset to Interface Controller */
91 host_reset(ESDHC_ONE_BIT_SUPPORT, ESDHC_LITTLE_ENDIAN_MODE);
92 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to set identification freq...\n",
95 /* Enable Identification Frequency */
96 host_cfg_clock(IDENTIFICATION_FREQ);
98 /* Add delay of 2 msec, let mmc/sd card to initialize */
99 hal_delay_us(2 * 1000);
101 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to software resetto card...\n",
104 //diag_printf("SW Reset...\n");
105 /* Issue Software Reset to card */
106 if (mxcmci_software_reset())
109 //diag_printf("Check Card...\n");
111 /* Check if the card is SD Memory Card */
112 if (!sd_voltage_validation()) {
113 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to verify SD card...\n",
115 /* Call SD Initialization Function */
116 init_status = sd_init(bus_width);
118 ((csd.csd3 & CSD_STRUCT_MSK) ? SD_CSD_2_0 : SD_CSD_1_0);
120 /* Card Command Class */
121 CCC = csd_get_value(&csd, 84, 95);
123 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to verify MMC card...\n",
125 /* Check if the card is MMC Memory Card */
126 if (!mmc_voltage_validation()) {
128 /* Call MMC Initialization Function */
129 init_status = mmc_init(bus_width);
131 Card_type = ((csd.csd3 & CSD_STRUCT_MSK) >> CSD_STRUCT_SHIFT) + SD_CSD_2_0;
132 MMC_Spec_vers = (csd.csd3 & MMC_CSD_SPEC_VERS_MASK) >> MMC_CSD_SPEC_VERS_SHIFT;
133 /* Card Command Class */
134 CCC = csd_get_value(&csd, 84, 95);
141 /*==========================================================================
142 FUNCTION: static cyg_uint32 card_get_csd (void)
144 this function will read MMC/SD CSD register and store in the global Variable.
158 Detailed Description:
159 1.Send CMD9 to get CSD value of MMC/SD Card.
160 2.Extract CSD value from CMDRSP0,CMDRSP1,CMDRSP2,CMDRSP3 registers.
161 ==============================================================================*/
162 cyg_uint32 card_get_csd(void)
166 command_response_t response;
167 cyg_uint32 status = FAIL;
168 cyg_uint32 card_address = (Card_rca << RCA_SHIFT);
170 /* Configure CMD9 for MMC/SD card */
171 /* 16bit card address is expected as Argument */
172 mxcmci_cmd_config(&cmd, CMD9, card_address, READ, RESPONSE_136,
173 DATA_PRESENT_NONE, ENABLE, DISABLE);
175 /* Issue Command CMD9 to Extrace CSD register contents */
177 if (host_send_cmd(&cmd) != FAIL) {
178 /* Read Command response */
179 response.format = RESPONSE_136;
180 host_read_response(&response);
182 /* Assign Response to CSD Strcuture */
183 csd.csd0 = response.cmd_rsp0;
184 csd.csd1 = response.cmd_rsp1;
185 csd.csd2 = response.cmd_rsp2;
186 csd.csd3 = response.cmd_rsp3;
188 flash_dprintf(FLASH_DEBUG_MAX, "CSD:%x:%x:%x:%x\n", csd.csd0,
189 csd.csd1, csd.csd2, csd.csd3);
192 diag_printf("Get CSD Failed.\n");
199 static cyg_uint32 csd_get_value(cyg_uint32 * pcsd, cyg_uint32 start_bit,
202 cyg_uint32 index = (start_bit / 32);
203 cyg_uint32 end_index = (end_bit / 32);
204 cyg_uint32 offset = (start_bit - 8) % 32;
205 cyg_uint32 end_offset = (end_bit - 8) % 32;
208 //pcsd = &(csd.csd0);
209 flash_dprintf(FLASH_DEBUG_MAX,
210 "start_bit=%d, end_bit=%d, index=%d, end_index=%d, offset=%d\n",
211 start_bit, end_bit, index, end_index, offset);
213 if (index == end_index) {
214 flash_dprintf(FLASH_DEBUG_MAX, "onl1y in index register\n");
216 (*((cyg_uint32 *) ((cyg_uint32) pcsd + (index << 2)))) &
217 ((1 << (end_offset + 1)) - (1 << offset));
218 value = (value >> offset);
220 flash_dprintf(FLASH_DEBUG_MAX, "index and index+1 registers\n");
222 *((cyg_uint32 *) ((cyg_uint32) pcsd +
223 (index << 2))) & (0xFFFFFFFF -
225 value = (value >> offset);
226 temp = (1 << (offset + end_bit - start_bit - 31)) - 1;
228 (*((cyg_uint32 *) ((cyg_uint32) pcsd + (index + 1) * 4)) &
230 value += temp << (32 - offset);
233 flash_dprintf(FLASH_DEBUG_MAX, "%s:value=%x (CSD:%x:%x:%x:%x)\n",
234 __FUNCTION__, value, *pcsd, *(pcsd + 1), *(pcsd + 2),
240 cyg_uint32 card_get_capacity_size(void)
242 cyg_uint32 capacity = 0;
243 cyg_uint32 c_size, c_size_mult, blk_len;
245 if (!csd.csd0 && !csd.csd1 && !csd.csd2 && !csd.csd3)
246 flash_dprintf(FLASH_DEBUG_MAX,
247 "WARNINGS:mxcmci_init should be done first!\n");
254 c_size = csd_get_value(&csd, 62, 73);
255 c_size_mult = csd_get_value(&csd, 47, 49);
256 blk_len = csd_get_value(&csd, 80, 83);
257 capacity = (c_size + 1) << (c_size_mult + 2 + blk_len - 10);
260 //blk_len = csd_get_value(&csd, 80, 83);
261 c_size = csd_get_value(&csd, 48, 69);
262 capacity = (c_size + 1) * 512; /* block length is fixed to 512B */
269 /* check whether the card is high capacity card */
270 if(capacity>2*1024*1024)
271 HighCapacityCard = 1;
273 HighCapacityCard = 0;
279 cyg_uint32 mxcmci_data_read(cyg_uint32 * dest_ptr, cyg_uint32 len,
282 cyg_uint32 read_status = FAIL;
284 read_status = mmc_data_read(dest_ptr, len, offset);
293 cyg_uint32 mxcmci_software_reset(void)
296 cyg_uint32 response = FAIL;
298 /*Configure CMD0 for MMC/SD card */
299 /*CMD0 doesnt expect any response */
300 mxcmci_cmd_config(&cmd, CMD0, NO_ARG, READ, RESPONSE_NONE,
301 DATA_PRESENT_NONE, DISABLE, DISABLE);
303 /*Issue CMD0 to MMC/SD card to put in active state */
304 if (host_send_cmd(&cmd) != FAIL) {
307 diag_printf("Card SW Reset Failed.\n");
313 cyg_uint32 mxcmci_get_cid(void)
317 cyg_uint32 cid_request = FAIL;
318 command_response_t response;
320 /* Configure CMD2 for card */
321 /* No Argument is expected for CMD2 */
322 mxcmci_cmd_config(&cmd, CMD2, NO_ARG, READ, RESPONSE_136,
323 DATA_PRESENT_NONE, ENABLE, DISABLE);
325 /* Issue CMD2 to card to determine CID contents */
326 if (host_send_cmd(&cmd) == FAIL) {
328 diag_printf("Send CMD2 Failed.\n");
330 /* Read Command response */
331 response.format = RESPONSE_136;
332 host_read_response(&response);
334 /* Assign CID values to mmc_cid structures */
335 Card_identification.cid0 = response.cmd_rsp0;
336 Card_identification.cid1 = response.cmd_rsp1;
337 Card_identification.cid2 = response.cmd_rsp2;
338 Card_identification.cid3 = response.cmd_rsp3;
340 /* Assign cid_request as SUCCESS */
341 cid_request = SUCCESS;
344 flash_dprintf(FLASH_DEBUG_MAX, "%s:CID=%X:%X:%X:%X\n", __FUNCTION__,
345 Card_identification.cid0, Card_identification.cid1,
346 Card_identification.cid2, Card_identification.cid3);
350 cyg_uint32 mxcmci_trans_prepare(void)
353 cyg_uint32 card_state = 0;
354 cyg_uint32 transfer_status = 0;
355 command_response_t response;
356 cyg_uint32 card_address = (Card_rca << RCA_SHIFT);
358 /* Configure CMD7 for MMC card */
359 /* 16bit card address is expected as Argument */
360 mxcmci_cmd_config(&cmd, CMD7, card_address, READ, RESPONSE_48,
361 DATA_PRESENT_NONE, ENABLE, ENABLE);
363 /* Sending the card from stand-by to transfer state */
364 if (host_send_cmd(&cmd) == FAIL) {
365 transfer_status = FAIL;
366 diag_printf("Send CMD7 Failed.\n");
369 /* Configure CMD13 to read status of the card becuase CMD7 has R1b response */
370 mxcmci_cmd_config(&cmd, CMD13, card_address, READ, RESPONSE_48,
371 DATA_PRESENT_NONE, ENABLE, ENABLE);
373 if (host_send_cmd(&cmd) == FAIL) {
374 transfer_status = FAIL;
375 diag_printf("Send CMD13 Failed.\n");
377 /* Read Command response */
378 response.format = RESPONSE_48;
379 host_read_response(&response);
381 card_state = CURR_CARD_STATE(response.cmd_rsp0);
383 if (card_state == TRAN) {
384 transfer_status = SUCCESS;
387 diag_printf("card_state: 0x%x\n", card_state);
388 transfer_status = FAIL;
394 return transfer_status;
398 cyg_uint32 mxcmci_trans_status(void)
401 cyg_uint32 card_state = 0;
402 cyg_uint32 transfer_status = 0;
403 command_response_t response;
404 cyg_uint32 card_address = (Card_rca << RCA_SHIFT);
406 /* Configure CMD13 to read status of the card becuase CMD7 has R1b response */
407 mxcmci_cmd_config(&cmd, CMD13, card_address, READ, RESPONSE_48,
408 DATA_PRESENT_NONE, ENABLE, ENABLE);
410 if (host_send_cmd(&cmd) == FAIL) {
411 diag_printf("Fail, CMD13\n");
412 transfer_status = FAIL;
416 /* Read Command response */
417 response.format = RESPONSE_48;
418 host_read_response(&response);
420 card_state = CURR_CARD_STATE(response.cmd_rsp0);
422 if (card_state == TRAN) {
423 transfer_status = SUCCESS;
424 //diag_printf("card_state: 0x%x\n", card_state);
428 //diag_printf("card_state: 0x%x\n", card_state);
429 transfer_status = FAIL;
432 return transfer_status;
436 void mxcmci_cmd_config(command_t * cmd_config, cyg_uint32 index,
437 cyg_uint32 argument, xfer_type_t transfer,
438 response_format_t format, data_present_select data,
439 crc_check_enable crc, cmdindex_check_enable cmdindex)
444 /* Assign cmd to cmd_config */
447 /* Configure Command index */
448 cmd->command = index;
450 /* Configure Command Argument */
453 /* Configure Data transfer type */
454 cmd->data_transfer = transfer;
456 /* Configure Response Format */
457 cmd->response_format = format;
459 /* Configure Data Present Select */
460 cmd->data_present = data;
462 /* Configiure CRC check Enable */
463 cmd->crc_check = crc;
465 /*Configure Command index check enable */
466 cmd->cmdindex_check = cmdindex;
468 /* if multi-block is used */
469 if (CMD18 == index || CMD25 == index) {
470 /*Configure Block count enable */
471 cmd->block_count_enable_check = ENABLE;
472 /*Configure Multi single block select */
473 cmd->multi_single_block = MULTIPLE;
475 /*Configure Block count enable */
476 cmd->block_count_enable_check = DISABLE;
478 /*Configure Multi single block select */
479 cmd->multi_single_block = SINGLE;