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/infra/diag.h>
55 #include <cyg/io/mxcmci_host.h>
56 #include <cyg/io/mxcmci_core.h>
57 #include <cyg/io/mxcmci_mmc.h>
58 #include <cyg/hal/hal_soc.h>
59 #include <cyg/io/mxc_mmc.h>
61 static cyg_uint32 csd_get_value(void *csd, cyg_uint32 start_bit,
64 #define MMCSD_INIT_DELAY 64
66 cyg_uint32 Card_rca = 0x1; /* Relative Card Address */
67 card_ident Card_identification; /* Card Identification Data */
68 card_type Card_type; /* Card Type */
69 cyg_uint32 MMC_Spec_vers = 0x1; /* Spec vers used for MMC */
70 card_specific_data csd; /* Global variable for Card Specific Data */
71 cyg_uint32 Card_capacity_size = 0; /* Card capacity size */
72 cyg_uint32 CCC = 0; /* Card Command Class */
74 int HighCapacityCard = 0;
76 /*==========================================================================
78 ==========================================================================*/
80 cyg_uint32 mxcmci_init(cyg_uint32 bus_width, cyg_uint32 base_address)
82 cyg_uint32 init_status = FAIL;
84 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to init base address...\n",
86 /* initialize Interface Controller */
87 host_init(base_address);
88 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to software reset...\n",
91 /* Software Reset to Interface Controller */
92 host_reset(ESDHC_ONE_BIT_SUPPORT, ESDHC_LITTLE_ENDIAN_MODE);
93 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to set identification freq...\n",
96 /* Enable Identification Frequency */
97 host_cfg_clock(IDENTIFICATION_FREQ);
99 /* Add delay of 2 msec, let mmc/sd card to initialize */
100 hal_delay_us(2 * 1000);
102 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to software resetto card...\n",
105 //diag_printf("SW Reset...\n");
106 /* Issue Software Reset to card */
107 if (mxcmci_software_reset())
110 //diag_printf("Check Card...\n");
112 /* Check if the card is SD Memory Card */
113 if (!sd_voltage_validation()) {
114 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to verify SD card...\n",
116 /* Call SD Initialization Function */
117 init_status = sd_init(bus_width);
119 ((csd.csd3 & CSD_STRUCT_MSK) ? SD_CSD_2_0 : SD_CSD_1_0);
121 /* Card Command Class */
122 CCC = csd_get_value(&csd, 84, 95);
124 flash_dprintf(FLASH_DEBUG_MAX, "%s:try to verify MMC card...\n",
126 /* Check if the card is MMC Memory Card */
127 if (!mmc_voltage_validation()) {
129 /* Call MMC Initialization Function */
130 init_status = mmc_init(bus_width);
132 Card_type = ((csd.csd3 & CSD_STRUCT_MSK) >> CSD_STRUCT_SHIFT) + SD_CSD_2_0;
133 MMC_Spec_vers = (csd.csd3 & MMC_CSD_SPEC_VERS_MASK) >> MMC_CSD_SPEC_VERS_SHIFT;
134 /* Card Command Class */
135 CCC = csd_get_value(&csd, 84, 95);
142 /*==========================================================================
143 FUNCTION: static cyg_uint32 card_get_csd (void)
145 this function will read MMC/SD CSD register and store in the global Variable.
159 Detailed Description:
160 1.Send CMD9 to get CSD value of MMC/SD Card.
161 2.Extract CSD value from CMDRSP0,CMDRSP1,CMDRSP2,CMDRSP3 registers.
162 ==============================================================================*/
163 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");
198 static cyg_uint32 csd_get_value(void *csd, cyg_uint32 start_bit,
201 cyg_uint32 index = (start_bit / 32);
202 cyg_uint32 end_index = (end_bit / 32);
203 cyg_uint32 offset = (start_bit - 8) % 32;
204 cyg_uint32 end_offset = (end_bit - 8) % 32;
207 cyg_uint32 *pcsd = csd;
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),
239 cyg_uint32 card_get_capacity_size(void)
241 cyg_uint32 capacity = 0;
242 cyg_uint32 c_size, c_size_mult, blk_len;
244 if (!csd.csd0 && !csd.csd1 && !csd.csd2 && !csd.csd3)
245 flash_dprintf(FLASH_DEBUG_MAX,
246 "WARNINGS:mxcmci_init should be done first!\n");
253 c_size = csd_get_value((void*)&csd, 62, 73);
254 c_size_mult = csd_get_value(&csd, 47, 49);
255 blk_len = csd_get_value(&csd, 80, 83);
256 capacity = (c_size + 1) << (c_size_mult + 2 + blk_len - 10);
259 //blk_len = csd_get_value(&csd, 80, 83);
260 c_size = csd_get_value(&csd, 48, 69);
261 capacity = (c_size + 1) * 512; /* block length is fixed to 512B */
268 /* check whether the card is high capacity card */
269 if(capacity>2*1024*1024)
270 HighCapacityCard = 1;
272 HighCapacityCard = 0;
277 cyg_uint32 mxcmci_data_read(cyg_uint32 *dest_ptr, cyg_uint32 len,
280 cyg_uint32 read_status = FAIL;
282 read_status = mmc_data_read(dest_ptr, len, offset);
290 cyg_uint32 mxcmci_software_reset(void)
293 cyg_uint32 response = FAIL;
295 /*Configure CMD0 for MMC/SD card */
296 /*CMD0 doesnt expect any response */
297 mxcmci_cmd_config(&cmd, CMD0, NO_ARG, READ, RESPONSE_NONE,
298 DATA_PRESENT_NONE, DISABLE, DISABLE);
300 /*Issue CMD0 to MMC/SD card to put in active state */
301 if (host_send_cmd(&cmd) != FAIL) {
304 diag_printf("Card SW Reset Failed.\n");
310 cyg_uint32 mxcmci_get_cid(void)
314 cyg_uint32 cid_request = FAIL;
315 command_response_t response;
317 /* Configure CMD2 for card */
318 /* No Argument is expected for CMD2 */
319 mxcmci_cmd_config(&cmd, CMD2, NO_ARG, READ, RESPONSE_136,
320 DATA_PRESENT_NONE, ENABLE, DISABLE);
322 /* Issue CMD2 to card to determine CID contents */
323 if (host_send_cmd(&cmd) == FAIL) {
325 diag_printf("Send CMD2 Failed.\n");
327 /* Read Command response */
328 response.format = RESPONSE_136;
329 host_read_response(&response);
331 /* Assign CID values to mmc_cid structures */
332 Card_identification.cid0 = response.cmd_rsp0;
333 Card_identification.cid1 = response.cmd_rsp1;
334 Card_identification.cid2 = response.cmd_rsp2;
335 Card_identification.cid3 = response.cmd_rsp3;
337 /* Assign cid_request as SUCCESS */
338 cid_request = SUCCESS;
341 flash_dprintf(FLASH_DEBUG_MAX, "%s:CID=%X:%X:%X:%X\n", __FUNCTION__,
342 Card_identification.cid0, Card_identification.cid1,
343 Card_identification.cid2, Card_identification.cid3);
347 cyg_uint32 mxcmci_trans_prepare(void)
350 cyg_uint32 card_state = 0;
351 cyg_uint32 transfer_status = 0;
352 command_response_t response;
353 cyg_uint32 card_address = (Card_rca << RCA_SHIFT);
355 /* Configure CMD7 for MMC card */
356 /* 16bit card address is expected as Argument */
357 mxcmci_cmd_config(&cmd, CMD7, card_address, READ, RESPONSE_48,
358 DATA_PRESENT_NONE, ENABLE, ENABLE);
360 /* Sending the card from stand-by to transfer state */
361 if (host_send_cmd(&cmd) == FAIL) {
362 transfer_status = FAIL;
363 diag_printf("Send CMD7 Failed.\n");
366 /* Configure CMD13 to read status of the card becuase CMD7 has R1b response */
367 mxcmci_cmd_config(&cmd, CMD13, card_address, READ, RESPONSE_48,
368 DATA_PRESENT_NONE, ENABLE, ENABLE);
370 if (host_send_cmd(&cmd) == FAIL) {
371 transfer_status = FAIL;
372 diag_printf("Send CMD13 Failed.\n");
374 /* Read Command response */
375 response.format = RESPONSE_48;
376 host_read_response(&response);
378 card_state = CURR_CARD_STATE(response.cmd_rsp0);
380 if (card_state == TRAN) {
381 transfer_status = SUCCESS;
384 diag_printf("card_state: 0x%x\n", card_state);
385 transfer_status = FAIL;
391 return transfer_status;
394 cyg_uint32 mxcmci_trans_status(void)
397 cyg_uint32 card_state = 0;
398 cyg_uint32 transfer_status = 0;
399 command_response_t response;
400 cyg_uint32 card_address = (Card_rca << RCA_SHIFT);
402 /* Configure CMD13 to read status of the card becuase CMD7 has R1b response */
403 mxcmci_cmd_config(&cmd, CMD13, card_address, READ, RESPONSE_48,
404 DATA_PRESENT_NONE, ENABLE, ENABLE);
406 if (host_send_cmd(&cmd) == FAIL) {
407 diag_printf("Fail, CMD13\n");
408 transfer_status = FAIL;
412 /* Read Command response */
413 response.format = RESPONSE_48;
414 host_read_response(&response);
416 card_state = CURR_CARD_STATE(response.cmd_rsp0);
418 if (card_state == TRAN) {
419 transfer_status = SUCCESS;
420 //diag_printf("card_state: 0x%x\n", card_state);
424 //diag_printf("card_state: 0x%x\n", card_state);
425 transfer_status = FAIL;
428 return transfer_status;
431 void mxcmci_cmd_config(command_t *cmd_config, cyg_uint32 index,
432 cyg_uint32 argument, xfer_type_t transfer,
433 response_format_t format, data_present_select data,
434 crc_check_enable crc, cmdindex_check_enable cmdindex)
438 /* Assign cmd to cmd_config */
441 /* Configure Command index */
442 cmd->command = index;
444 /* Configure Command Argument */
447 /* Configure Data transfer type */
448 cmd->data_transfer = transfer;
450 /* Configure Response Format */
451 cmd->response_format = format;
453 /* Configure Data Present Select */
454 cmd->data_present = data;
456 /* Configiure CRC check Enable */
457 cmd->crc_check = crc;
459 /* Configure Command index check enable */
460 cmd->cmdindex_check = cmdindex;
462 /* if multi-block is used */
463 if (CMD18 == index || CMD25 == index) {
464 /* Configure Block count enable */
465 cmd->block_count_enable_check = ENABLE;
466 /* Configure Multi single block select */
467 cmd->multi_single_block = MULTIPLE;
469 /* Configure Block count enable */
470 cmd->block_count_enable_check = DISABLE;
472 /* Configure Multi single block select */
473 cmd->multi_single_block = SINGLE;