3 * Texas Instruments, <www.ti.com>
4 * Syed Mohammed Khasim <khasim@ti.com>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation's version 2 of
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 #include <asm/arch/mmc.h>
35 const unsigned short mmc_transspeed_val[15][4] = {
36 {CLKD(10, 1), CLKD(10, 10), CLKD(10, 100), CLKD(10, 1000)},
37 {CLKD(12, 1), CLKD(12, 10), CLKD(12, 100), CLKD(12, 1000)},
38 {CLKD(13, 1), CLKD(13, 10), CLKD(13, 100), CLKD(13, 1000)},
39 {CLKD(15, 1), CLKD(15, 10), CLKD(15, 100), CLKD(15, 1000)},
40 {CLKD(20, 1), CLKD(20, 10), CLKD(20, 100), CLKD(20, 1000)},
41 {CLKD(26, 1), CLKD(26, 10), CLKD(26, 100), CLKD(26, 1000)},
42 {CLKD(30, 1), CLKD(30, 10), CLKD(30, 100), CLKD(30, 1000)},
43 {CLKD(35, 1), CLKD(35, 10), CLKD(35, 100), CLKD(35, 1000)},
44 {CLKD(40, 1), CLKD(40, 10), CLKD(40, 100), CLKD(40, 1000)},
45 {CLKD(45, 1), CLKD(45, 10), CLKD(45, 100), CLKD(45, 1000)},
46 {CLKD(52, 1), CLKD(52, 10), CLKD(52, 100), CLKD(52, 1000)},
47 {CLKD(55, 1), CLKD(55, 10), CLKD(55, 100), CLKD(55, 1000)},
48 {CLKD(60, 1), CLKD(60, 10), CLKD(60, 100), CLKD(60, 1000)},
49 {CLKD(70, 1), CLKD(70, 10), CLKD(70, 100), CLKD(70, 1000)},
50 {CLKD(80, 1), CLKD(80, 10), CLKD(80, 100), CLKD(80, 1000)}
53 mmc_card_data cur_card_data;
54 static block_dev_desc_t mmc_blk_dev;
55 static hsmmc_t *mmc_base = (hsmmc_t *)OMAP_HSMMC_BASE;
57 block_dev_desc_t *mmc_get_dev(int dev)
59 return (block_dev_desc_t *) &mmc_blk_dev;
62 unsigned char mmc_board_init(void)
64 t2_t *t2_base = (t2_t *)T2_BASE;
66 twl4030_power_mmc_init();
68 writel(readl(&t2_base->pbias_lite) | PBIASLITEPWRDNZ1 |
69 PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
70 &t2_base->pbias_lite);
72 writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
78 void mmc_init_stream(void)
80 writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
82 writel(MMC_CMD0, &mmc_base->cmd);
83 while (!(readl(&mmc_base->stat) & CC_MASK));
85 writel(CC_MASK, &mmc_base->stat);
87 writel(MMC_CMD0, &mmc_base->cmd);
88 while (!(readl(&mmc_base->stat) & CC_MASK));
90 writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
93 unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div)
97 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
98 (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
102 val = MMC_INIT_SEQ_CLK / 2;
105 val = MMC_400kHz_CLK;
113 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
114 (val << CLKD_OFFSET) | ICE_OSCILLATE);
116 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY);
118 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
122 unsigned char mmc_init_setup(void)
124 unsigned int reg_val;
128 writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
129 &mmc_base->sysconfig);
130 while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0);
132 writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
133 while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0);
135 writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl);
136 writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP,
139 reg_val = readl(&mmc_base->con) & RESERVED_MASK;
141 writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
142 MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
143 HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
145 mmc_clock_config(CLK_INITSEQ, 0);
146 writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
148 writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE |
149 IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC,
156 unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg,
157 unsigned int *response)
159 unsigned int mmc_stat;
161 while ((readl(&mmc_base->pstate) & DATI_MASK) == DATI_CMDDIS);
163 writel(BLEN_512BYTESLEN | NBLK_STPCNT, &mmc_base->blk);
164 writel(0xFFFFFFFF, &mmc_base->stat);
165 writel(arg, &mmc_base->arg);
166 writel(cmd | CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
167 MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE,
172 mmc_stat = readl(&mmc_base->stat);
173 } while (mmc_stat == 0);
175 if ((mmc_stat & ERRI_MASK) != 0)
176 return (unsigned char) mmc_stat;
178 if (mmc_stat & CC_MASK) {
179 writel(CC_MASK, &mmc_base->stat);
180 response[0] = readl(&mmc_base->rsp10);
181 if ((cmd & RSP_TYPE_MASK) == RSP_TYPE_LGHT136) {
182 response[1] = readl(&mmc_base->rsp32);
183 response[2] = readl(&mmc_base->rsp54);
184 response[3] = readl(&mmc_base->rsp76);
192 unsigned char mmc_read_data(unsigned int *output_buf)
194 unsigned int mmc_stat;
195 unsigned int read_count = 0;
202 mmc_stat = readl(&mmc_base->stat);
203 } while (mmc_stat == 0);
205 if ((mmc_stat & ERRI_MASK) != 0)
206 return (unsigned char) mmc_stat;
208 if (mmc_stat & BRR_MASK) {
211 writel(readl(&mmc_base->stat) | BRR_MASK,
213 for (k = 0; k < MMCSD_SECTOR_SIZE / 4; k++) {
214 *output_buf = readl(&mmc_base->data);
220 if (mmc_stat & BWR_MASK)
221 writel(readl(&mmc_base->stat) | BWR_MASK,
224 if (mmc_stat & TC_MASK) {
225 writel(readl(&mmc_base->stat) | TC_MASK,
233 unsigned char mmc_detect_card(mmc_card_data *mmc_card_cur)
236 unsigned int argument = 0;
237 unsigned int ocr_value, ocr_recvd, ret_cmd41, hcs_val;
238 unsigned int resp[4];
239 unsigned short retry_cnt = 2000;
241 /* Set to Initialization Clock */
242 err = mmc_clock_config(CLK_400KHZ, 0);
246 mmc_card_cur->RCA = MMC_RELATIVE_CARD_ADDRESS;
247 argument = 0x00000000;
249 ocr_value = (0x1FF << 15);
250 err = mmc_send_cmd(MMC_CMD0, argument, resp);
254 argument = SD_CMD8_CHECK_PATTERN | SD_CMD8_2_7_3_6_V_RANGE;
255 err = mmc_send_cmd(MMC_SDCMD8, argument, resp);
256 hcs_val = (err == 1) ?
257 MMC_OCR_REG_HOST_CAPACITY_SUPPORT_SECTOR :
258 MMC_OCR_REG_HOST_CAPACITY_SUPPORT_BYTE;
260 argument = 0x0000 << 16;
261 err = mmc_send_cmd(MMC_CMD55, argument, resp);
263 mmc_card_cur->card_type = SD_CARD;
264 ocr_value |= hcs_val;
265 ret_cmd41 = MMC_ACMD41;
267 mmc_card_cur->card_type = MMC_CARD;
268 ocr_value |= MMC_OCR_REG_ACCESS_MODE_SECTOR;
269 ret_cmd41 = MMC_CMD1;
270 writel(readl(&mmc_base->con) & ~OD, &mmc_base->con);
271 writel(readl(&mmc_base->con) | OPENDRAIN, &mmc_base->con);
274 argument = ocr_value;
275 err = mmc_send_cmd(ret_cmd41, argument, resp);
279 ocr_recvd = ((mmc_resp_r3 *) resp)->ocr;
281 while (!(ocr_recvd & (0x1 << 31)) && (retry_cnt > 0)) {
283 if (mmc_card_cur->card_type == SD_CARD) {
284 argument = 0x0000 << 16;
285 err = mmc_send_cmd(MMC_CMD55, argument, resp);
288 argument = ocr_value;
289 err = mmc_send_cmd(ret_cmd41, argument, resp);
292 ocr_recvd = ((mmc_resp_r3 *) resp)->ocr;
295 if (!(ocr_recvd & (0x1 << 31)))
298 if (mmc_card_cur->card_type == MMC_CARD) {
299 if ((ocr_recvd & MMC_OCR_REG_ACCESS_MODE_MASK) ==
300 MMC_OCR_REG_ACCESS_MODE_SECTOR) {
301 mmc_card_cur->mode = SECTOR_MODE;
303 mmc_card_cur->mode = BYTE_MODE;
306 ocr_recvd &= ~MMC_OCR_REG_ACCESS_MODE_MASK;
308 if ((ocr_recvd & MMC_OCR_REG_HOST_CAPACITY_SUPPORT_MASK)
309 == MMC_OCR_REG_HOST_CAPACITY_SUPPORT_SECTOR) {
310 mmc_card_cur->mode = SECTOR_MODE;
312 mmc_card_cur->mode = BYTE_MODE;
314 ocr_recvd &= ~MMC_OCR_REG_HOST_CAPACITY_SUPPORT_MASK;
317 ocr_recvd &= ~(0x1 << 31);
318 if (!(ocr_recvd & ocr_value))
321 err = mmc_send_cmd(MMC_CMD2, argument, resp);
325 if (mmc_card_cur->card_type == MMC_CARD) {
326 argument = mmc_card_cur->RCA << 16;
327 err = mmc_send_cmd(MMC_CMD3, argument, resp);
331 argument = 0x00000000;
332 err = mmc_send_cmd(MMC_SDCMD3, argument, resp);
336 mmc_card_cur->RCA = ((mmc_resp_r6 *) resp)->newpublishedrca;
339 writel(readl(&mmc_base->con) & ~OD, &mmc_base->con);
340 writel(readl(&mmc_base->con) | NOOPENDRAIN, &mmc_base->con);
344 unsigned char mmc_read_cardsize(mmc_card_data *mmc_dev_data,
345 mmc_csd_reg_t *cur_csd)
347 mmc_extended_csd_reg_t ext_csd;
348 unsigned int size, count, blk_len, blk_no, card_size, argument;
350 unsigned int resp[4];
352 if (mmc_dev_data->mode == SECTOR_MODE) {
353 if (mmc_dev_data->card_type == SD_CARD) {
355 (((mmc_sd2_csd_reg_t *) cur_csd)->
356 c_size_lsb & MMC_SD2_CSD_C_SIZE_LSB_MASK) |
357 ((((mmc_sd2_csd_reg_t *) cur_csd)->
358 c_size_msb & MMC_SD2_CSD_C_SIZE_MSB_MASK)
359 << MMC_SD2_CSD_C_SIZE_MSB_OFFSET);
360 mmc_dev_data->size = card_size * 1024;
361 if (mmc_dev_data->size == 0)
364 argument = 0x00000000;
365 err = mmc_send_cmd(MMC_CMD8, argument, resp);
368 err = mmc_read_data((unsigned int *) &ext_csd);
371 mmc_dev_data->size = ext_csd.sectorcount;
373 if (mmc_dev_data->size == 0)
374 mmc_dev_data->size = 8388608;
377 if (cur_csd->c_size_mult >= 8)
380 if (cur_csd->read_bl_len >= 12)
384 count = 1 << (cur_csd->c_size_mult + 2);
385 card_size = (cur_csd->c_size_lsb & MMC_CSD_C_SIZE_LSB_MASK) |
386 ((cur_csd->c_size_msb & MMC_CSD_C_SIZE_MSB_MASK)
387 << MMC_CSD_C_SIZE_MSB_OFFSET);
388 blk_no = (card_size + 1) * count;
389 blk_len = 1 << cur_csd->read_bl_len;
390 size = blk_no * blk_len;
391 mmc_dev_data->size = size / MMCSD_SECTOR_SIZE;
392 if (mmc_dev_data->size == 0)
398 unsigned char omap_mmc_read_sect(unsigned int start_sec, unsigned int num_bytes,
399 mmc_card_data *mmc_c,
400 unsigned long *output_buf)
403 unsigned int argument;
404 unsigned int resp[4];
405 unsigned int num_sec_val =
406 (num_bytes + (MMCSD_SECTOR_SIZE - 1)) / MMCSD_SECTOR_SIZE;
407 unsigned int sec_inc_val;
409 if (num_sec_val == 0)
412 if (mmc_c->mode == SECTOR_MODE) {
413 argument = start_sec;
416 argument = start_sec * MMCSD_SECTOR_SIZE;
417 sec_inc_val = MMCSD_SECTOR_SIZE;
420 while (num_sec_val) {
421 err = mmc_send_cmd(MMC_CMD17, argument, resp);
425 err = mmc_read_data((unsigned int *) output_buf);
429 output_buf += (MMCSD_SECTOR_SIZE / 4);
430 argument += sec_inc_val;
436 unsigned char configure_mmc(mmc_card_data *mmc_card_cur)
438 unsigned char ret_val;
439 unsigned int argument;
440 unsigned int resp[4];
441 unsigned int trans_clk, trans_fact, trans_unit, retries = 2;
442 mmc_csd_reg_t Card_CSD;
443 unsigned char trans_speed;
445 ret_val = mmc_init_setup();
451 ret_val = mmc_detect_card(mmc_card_cur);
453 } while ((retries > 0) && (ret_val != 1));
455 argument = mmc_card_cur->RCA << 16;
456 ret_val = mmc_send_cmd(MMC_CMD9, argument, resp);
460 ((unsigned int *) &Card_CSD)[3] = resp[3];
461 ((unsigned int *) &Card_CSD)[2] = resp[2];
462 ((unsigned int *) &Card_CSD)[1] = resp[1];
463 ((unsigned int *) &Card_CSD)[0] = resp[0];
465 if (mmc_card_cur->card_type == MMC_CARD)
466 mmc_card_cur->version = Card_CSD.spec_vers;
468 trans_speed = Card_CSD.tran_speed;
470 ret_val = mmc_send_cmd(MMC_CMD4, MMC_DSR_DEFAULT << 16, resp);
474 trans_unit = trans_speed & MMC_CSD_TRAN_SPEED_UNIT_MASK;
475 trans_fact = trans_speed & MMC_CSD_TRAN_SPEED_FACTOR_MASK;
477 if (trans_unit > MMC_CSD_TRAN_SPEED_UNIT_100MHZ)
480 if ((trans_fact < MMC_CSD_TRAN_SPEED_FACTOR_1_0) ||
481 (trans_fact > MMC_CSD_TRAN_SPEED_FACTOR_8_0))
487 trans_clk = mmc_transspeed_val[trans_fact - 1][trans_unit] * 2;
488 ret_val = mmc_clock_config(CLK_MISC, trans_clk);
493 argument = mmc_card_cur->RCA << 16;
494 ret_val = mmc_send_cmd(MMC_CMD7_SELECT, argument, resp);
498 /* Configure the block length to 512 bytes */
499 argument = MMCSD_SECTOR_SIZE;
500 ret_val = mmc_send_cmd(MMC_CMD16, argument, resp);
504 /* get the card size in sectors */
505 ret_val = mmc_read_cardsize(mmc_card_cur, &Card_CSD);
511 unsigned long mmc_bread(int dev_num, unsigned long blknr, lbaint_t blkcnt,
514 omap_mmc_read_sect(blknr, (blkcnt * MMCSD_SECTOR_SIZE), &cur_card_data,
515 (unsigned long *) dst);
519 int mmc_legacy_init(int verbose)
521 if (configure_mmc(&cur_card_data) != 1)
524 mmc_blk_dev.if_type = IF_TYPE_MMC;
525 mmc_blk_dev.part_type = PART_TYPE_DOS;
528 mmc_blk_dev.type = 0;
530 /* FIXME fill in the correct size (is set to 32MByte) */
531 mmc_blk_dev.blksz = MMCSD_SECTOR_SIZE;
532 mmc_blk_dev.lba = 0x10000;
533 mmc_blk_dev.removable = 0;
534 mmc_blk_dev.block_read = mmc_bread;
536 fat_register_device(&mmc_blk_dev, 1);