| /* |
| * (C) Copyright 2003 |
| * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <config.h> |
| #include <common.h> |
| #include <mmc.h> |
| #include <asm/errno.h> |
| #include <asm/arch/hardware.h> |
| #include <part.h> |
| |
| #ifdef CONFIG_MMC |
| |
| extern int fat_register_device(block_dev_desc_t * dev_desc, int part_no); |
| |
| static block_dev_desc_t mmc_dev; |
| |
| block_dev_desc_t *mmc_get_dev(int dev) |
| { |
| return ((block_dev_desc_t *) & mmc_dev); |
| } |
| |
| /* |
| * FIXME needs to read cid and csd info to determine block size |
| * and other parameters |
| */ |
| static uchar mmc_buf[MMC_BLOCK_SIZE]; |
| static uchar spec_ver; |
| static int mmc_ready = 0; |
| static int wide = 0; |
| |
| static uint32_t * |
| /****************************************************/ |
| mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat) |
| /****************************************************/ |
| { |
| static uint32_t resp[4], a, b, c; |
| ulong status; |
| int i; |
| |
| debug("mmc_cmd %u 0x%04x 0x%04x 0x%04x\n", cmd, argh, argl, |
| cmdat | wide); |
| MMC_STRPCL = MMC_STRPCL_STOP_CLK; |
| MMC_I_MASK = ~MMC_I_MASK_CLK_IS_OFF; |
| while (!(MMC_I_REG & MMC_I_REG_CLK_IS_OFF)) ; |
| MMC_CMD = cmd; |
| MMC_ARGH = argh; |
| MMC_ARGL = argl; |
| MMC_CMDAT = cmdat | wide; |
| MMC_I_MASK = ~MMC_I_MASK_END_CMD_RES; |
| MMC_STRPCL = MMC_STRPCL_START_CLK; |
| while (!(MMC_I_REG & MMC_I_REG_END_CMD_RES)) ; |
| |
| status = MMC_STAT; |
| debug("MMC status 0x%08x\n", status); |
| if (status & MMC_STAT_TIME_OUT_RESPONSE) { |
| return 0; |
| } |
| |
| /* Linux says: |
| * Did I mention this is Sick. We always need to |
| * discard the upper 8 bits of the first 16-bit word. |
| */ |
| a = (MMC_RES & 0xffff); |
| for (i = 0; i < 4; i++) { |
| b = (MMC_RES & 0xffff); |
| c = (MMC_RES & 0xffff); |
| resp[i] = (a << 24) | (b << 8) | (c >> 8); |
| a = c; |
| debug("MMC resp[%d] = %#08x\n", i, resp[i]); |
| } |
| |
| return resp; |
| } |
| |
| int |
| /****************************************************/ |
| mmc_block_read(uchar * dst, ulong src, ulong len) |
| /****************************************************/ |
| { |
| ushort argh, argl; |
| ulong status; |
| |
| if (len == 0) { |
| return 0; |
| } |
| |
| debug("mmc_block_rd dst %lx src %lx len %d\n", (ulong) dst, src, len); |
| |
| argh = len >> 16; |
| argl = len & 0xffff; |
| |
| /* set block len */ |
| mmc_cmd(MMC_CMD_SET_BLOCKLEN, argh, argl, MMC_CMDAT_R1); |
| |
| /* send read command */ |
| argh = src >> 16; |
| argl = src & 0xffff; |
| MMC_STRPCL = MMC_STRPCL_STOP_CLK; |
| MMC_RDTO = 0xffff; |
| MMC_NOB = 1; |
| MMC_BLKLEN = len; |
| mmc_cmd(MMC_CMD_READ_SINGLE_BLOCK, argh, argl, |
| MMC_CMDAT_R1 | MMC_CMDAT_READ | MMC_CMDAT_BLOCK | |
| MMC_CMDAT_DATA_EN); |
| |
| MMC_I_MASK = ~MMC_I_MASK_RXFIFO_RD_REQ; |
| while (len) { |
| if (MMC_I_REG & MMC_I_REG_RXFIFO_RD_REQ) { |
| #ifdef CONFIG_PXA27X |
| int i; |
| for (i = min(len, 32); i; i--) { |
| *dst++ = *((volatile uchar *)&MMC_RXFIFO); |
| len--; |
| } |
| #else |
| *dst++ = MMC_RXFIFO; |
| len--; |
| #endif |
| } |
| status = MMC_STAT; |
| if (status & MMC_STAT_ERRORS) { |
| printf("MMC_STAT error %lx\n", status); |
| return -1; |
| } |
| } |
| MMC_I_MASK = ~MMC_I_MASK_DATA_TRAN_DONE; |
| while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE)) ; |
| status = MMC_STAT; |
| if (status & MMC_STAT_ERRORS) { |
| printf("MMC_STAT error %lx\n", status); |
| return -1; |
| } |
| return 0; |
| } |
| |
| int |
| /****************************************************/ |
| mmc_block_write(ulong dst, uchar * src, int len) |
| /****************************************************/ |
| { |
| ushort argh, argl; |
| ulong status; |
| |
| if (len == 0) { |
| return 0; |
| } |
| |
| debug("mmc_block_wr dst %lx src %lx len %d\n", dst, (ulong) src, len); |
| |
| argh = len >> 16; |
| argl = len & 0xffff; |
| |
| /* set block len */ |
| mmc_cmd(MMC_CMD_SET_BLOCKLEN, argh, argl, MMC_CMDAT_R1); |
| |
| /* send write command */ |
| argh = dst >> 16; |
| argl = dst & 0xffff; |
| MMC_STRPCL = MMC_STRPCL_STOP_CLK; |
| MMC_NOB = 1; |
| MMC_BLKLEN = len; |
| mmc_cmd(MMC_CMD_WRITE_BLOCK, argh, argl, |
| MMC_CMDAT_R1 | MMC_CMDAT_WRITE | MMC_CMDAT_BLOCK | |
| MMC_CMDAT_DATA_EN); |
| |
| MMC_I_MASK = ~MMC_I_MASK_TXFIFO_WR_REQ; |
| while (len) { |
| if (MMC_I_REG & MMC_I_REG_TXFIFO_WR_REQ) { |
| int i, bytes = min(32, len); |
| |
| for (i = 0; i < bytes; i++) { |
| MMC_TXFIFO = *src++; |
| } |
| if (bytes < 32) { |
| MMC_PRTBUF = MMC_PRTBUF_BUF_PART_FULL; |
| } |
| len -= bytes; |
| } |
| status = MMC_STAT; |
| if (status & MMC_STAT_ERRORS) { |
| printf("MMC_STAT error %lx\n", status); |
| return -1; |
| } |
| } |
| MMC_I_MASK = ~MMC_I_MASK_DATA_TRAN_DONE; |
| while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE)) ; |
| MMC_I_MASK = ~MMC_I_MASK_PRG_DONE; |
| while (!(MMC_I_REG & MMC_I_REG_PRG_DONE)) ; |
| status = MMC_STAT; |
| if (status & MMC_STAT_ERRORS) { |
| printf("MMC_STAT error %lx\n", status); |
| return -1; |
| } |
| return 0; |
| } |
| |
| int |
| /****************************************************/ |
| mmc_read(ulong src, uchar * dst, int size) |
| /****************************************************/ |
| { |
| ulong end, part_start, part_end, part_len, aligned_start, aligned_end; |
| ulong mmc_block_size, mmc_block_address; |
| |
| if (size == 0) { |
| return 0; |
| } |
| |
| if (!mmc_ready) { |
| printf("Please initial the MMC first\n"); |
| return -1; |
| } |
| |
| mmc_block_size = MMC_BLOCK_SIZE; |
| mmc_block_address = ~(mmc_block_size - 1); |
| |
| src -= CONFIG_SYS_MMC_BASE; |
| end = src + size; |
| part_start = ~mmc_block_address & src; |
| part_end = ~mmc_block_address & end; |
| aligned_start = mmc_block_address & src; |
| aligned_end = mmc_block_address & end; |
| |
| /* all block aligned accesses */ |
| debug |
| ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if (part_start) { |
| part_len = mmc_block_size - part_start; |
| debug |
| ("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < |
| 0) { |
| return -1; |
| } |
| memcpy(dst, mmc_buf + part_start, part_len); |
| dst += part_len; |
| src += part_len; |
| } |
| debug |
| ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| for (; src < aligned_end; src += mmc_block_size, dst += mmc_block_size) { |
| debug |
| ("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if ((mmc_block_read((uchar *) (dst), src, mmc_block_size)) < 0) { |
| return -1; |
| } |
| } |
| debug |
| ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if (part_end && src < end) { |
| debug |
| ("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) { |
| return -1; |
| } |
| memcpy(dst, mmc_buf, part_end); |
| } |
| return 0; |
| } |
| |
| int |
| /****************************************************/ |
| mmc_write(uchar * src, ulong dst, int size) |
| /****************************************************/ |
| { |
| ulong end, part_start, part_end, part_len, aligned_start, aligned_end; |
| ulong mmc_block_size, mmc_block_address; |
| |
| if (size == 0) { |
| return 0; |
| } |
| |
| if (!mmc_ready) { |
| printf("Please initial the MMC first\n"); |
| return -1; |
| } |
| |
| mmc_block_size = MMC_BLOCK_SIZE; |
| mmc_block_address = ~(mmc_block_size - 1); |
| |
| dst -= CONFIG_SYS_MMC_BASE; |
| end = dst + size; |
| part_start = ~mmc_block_address & dst; |
| part_end = ~mmc_block_address & end; |
| aligned_start = mmc_block_address & dst; |
| aligned_end = mmc_block_address & end; |
| |
| /* all block aligned accesses */ |
| debug |
| ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if (part_start) { |
| part_len = mmc_block_size - part_start; |
| debug |
| ("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| (ulong) src, dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < |
| 0) { |
| return -1; |
| } |
| memcpy(mmc_buf + part_start, src, part_len); |
| if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) < |
| 0) { |
| return -1; |
| } |
| dst += part_len; |
| src += part_len; |
| } |
| debug |
| ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| for (; dst < aligned_end; src += mmc_block_size, dst += mmc_block_size) { |
| debug |
| ("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if ((mmc_block_write(dst, (uchar *) src, mmc_block_size)) < 0) { |
| return -1; |
| } |
| } |
| debug |
| ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if (part_end && dst < end) { |
| debug |
| ("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", |
| src, (ulong) dst, end, part_start, part_end, aligned_start, |
| aligned_end); |
| if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) { |
| return -1; |
| } |
| memcpy(mmc_buf, src, part_end); |
| if ((mmc_block_write(aligned_end, mmc_buf, mmc_block_size)) < 0) { |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| ulong |
| /****************************************************/ |
| mmc_bread(int dev_num, ulong blknr, lbaint_t blkcnt, void *dst) |
| /****************************************************/ |
| { |
| int mmc_block_size = MMC_BLOCK_SIZE; |
| ulong src = blknr * mmc_block_size + CONFIG_SYS_MMC_BASE; |
| |
| mmc_read(src, (uchar *) dst, blkcnt * mmc_block_size); |
| return blkcnt; |
| } |
| |
| #ifdef __GNUC__ |
| #define likely(x) __builtin_expect(!!(x), 1) |
| #define unlikely(x) __builtin_expect(!!(x), 0) |
| #else |
| #define likely(x) (x) |
| #define unlikely(x) (x) |
| #endif |
| |
| #define UNSTUFF_BITS(resp,start,size) \ |
| ({ \ |
| const int __size = size; \ |
| const uint32_t __mask = (__size < 32 ? 1 << __size : 0) - 1; \ |
| const int32_t __off = 3 - ((start) / 32); \ |
| const int32_t __shft = (start) & 31; \ |
| uint32_t __res; \ |
| \ |
| __res = resp[__off] >> __shft; \ |
| if (__size + __shft > 32) \ |
| __res |= resp[__off-1] << ((32 - __shft) % 32); \ |
| __res & __mask; \ |
| }) |
| |
| /* |
| * Given the decoded CSD structure, decode the raw CID to our CID structure. |
| */ |
| static void mmc_decode_cid(uint32_t * resp) |
| { |
| if (IF_TYPE_SD == mmc_dev.if_type) { |
| /* |
| * SD doesn't currently have a version field so we will |
| * have to assume we can parse this. |
| */ |
| sprintf((char *)mmc_dev.vendor, |
| "Man %02x OEM %c%c \"%c%c%c%c%c\" Date %02u/%04u", |
| UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp, 112, 8), |
| UNSTUFF_BITS(resp, 104, 8), UNSTUFF_BITS(resp, 96, 8), |
| UNSTUFF_BITS(resp, 88, 8), UNSTUFF_BITS(resp, 80, 8), |
| UNSTUFF_BITS(resp, 72, 8), UNSTUFF_BITS(resp, 64, 8), |
| UNSTUFF_BITS(resp, 8, 4), UNSTUFF_BITS(resp, 12, |
| 8) + 2000); |
| sprintf((char *)mmc_dev.revision, "%d.%d", |
| UNSTUFF_BITS(resp, 60, 4), UNSTUFF_BITS(resp, 56, 4)); |
| sprintf((char *)mmc_dev.product, "%u", |
| UNSTUFF_BITS(resp, 24, 32)); |
| } else { |
| /* |
| * The selection of the format here is based upon published |
| * specs from sandisk and from what people have reported. |
| */ |
| switch (spec_ver) { |
| case 0: /* MMC v1.0 - v1.2 */ |
| case 1: /* MMC v1.4 */ |
| sprintf((char *)mmc_dev.vendor, |
| "Man %02x%02x%02x \"%c%c%c%c%c%c%c\" Date %02u/%04u", |
| UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp, |
| 112, |
| 8), |
| UNSTUFF_BITS(resp, 104, 8), UNSTUFF_BITS(resp, |
| 96, 8), |
| UNSTUFF_BITS(resp, 88, 8), UNSTUFF_BITS(resp, |
| 80, 8), |
| UNSTUFF_BITS(resp, 72, 8), UNSTUFF_BITS(resp, |
| 64, 8), |
| UNSTUFF_BITS(resp, 56, 8), UNSTUFF_BITS(resp, |
| 48, 8), |
| UNSTUFF_BITS(resp, 12, 4), UNSTUFF_BITS(resp, 8, |
| 4) + |
| 1997); |
| sprintf((char *)mmc_dev.revision, "%d.%d", |
| UNSTUFF_BITS(resp, 44, 4), UNSTUFF_BITS(resp, |
| 40, 4)); |
| sprintf((char *)mmc_dev.product, "%u", |
| UNSTUFF_BITS(resp, 16, 24)); |
| break; |
| |
| case 2: /* MMC v2.0 - v2.2 */ |
| case 3: /* MMC v3.1 - v3.3 */ |
| case 4: /* MMC v4 */ |
| sprintf((char *)mmc_dev.vendor, |
| "Man %02x OEM %04x \"%c%c%c%c%c%c\" Date %02u/%04u", |
| UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp, |
| 104, |
| 16), |
| UNSTUFF_BITS(resp, 96, 8), UNSTUFF_BITS(resp, |
| 88, 8), |
| UNSTUFF_BITS(resp, 80, 8), UNSTUFF_BITS(resp, |
| 72, 8), |
| UNSTUFF_BITS(resp, 64, 8), UNSTUFF_BITS(resp, |
| 56, 8), |
| UNSTUFF_BITS(resp, 12, 4), UNSTUFF_BITS(resp, 8, |
| 4) + |
| 1997); |
| sprintf((char *)mmc_dev.product, "%u", |
| UNSTUFF_BITS(resp, 16, 32)); |
| sprintf((char *)mmc_dev.revision, "N/A"); |
| break; |
| |
| default: |
| printf("MMC card has unknown MMCA version %d\n", |
| spec_ver); |
| break; |
| } |
| } |
| printf("%s card.\nVendor: %s\nProduct: %s\nRevision: %s\n", |
| (IF_TYPE_SD == mmc_dev.if_type) ? "SD" : "MMC", mmc_dev.vendor, |
| mmc_dev.product, mmc_dev.revision); |
| } |
| |
| /* |
| * Given a 128-bit response, decode to our card CSD structure. |
| */ |
| static void mmc_decode_csd(uint32_t * resp) |
| { |
| unsigned int mult, csd_struct; |
| |
| if (IF_TYPE_SD == mmc_dev.if_type) { |
| csd_struct = UNSTUFF_BITS(resp, 126, 2); |
| if (csd_struct != 0) { |
| printf("SD: unrecognised CSD structure version %d\n", |
| csd_struct); |
| return; |
| } |
| } else { |
| /* |
| * We only understand CSD structure v1.1 and v1.2. |
| * v1.2 has extra information in bits 15, 11 and 10. |
| */ |
| csd_struct = UNSTUFF_BITS(resp, 126, 2); |
| if (csd_struct != 1 && csd_struct != 2) { |
| printf("MMC: unrecognised CSD structure version %d\n", |
| csd_struct); |
| return; |
| } |
| |
| spec_ver = UNSTUFF_BITS(resp, 122, 4); |
| mmc_dev.if_type = IF_TYPE_MMC; |
| } |
| |
| mult = 1 << (UNSTUFF_BITS(resp, 47, 3) + 2); |
| mmc_dev.lba = (1 + UNSTUFF_BITS(resp, 62, 12)) * mult; |
| mmc_dev.blksz = 1 << UNSTUFF_BITS(resp, 80, 4); |
| |
| /* FIXME: The following just makes assumes that's the partition type -- should really read it */ |
| mmc_dev.part_type = PART_TYPE_DOS; |
| mmc_dev.dev = 0; |
| mmc_dev.lun = 0; |
| mmc_dev.type = DEV_TYPE_HARDDISK; |
| mmc_dev.removable = 0; |
| mmc_dev.block_read = mmc_bread; |
| |
| printf("Detected: %lu blocks of %lu bytes (%luMB) ", |
| mmc_dev.lba, |
| mmc_dev.blksz, |
| mmc_dev.lba * mmc_dev.blksz / (1024 * 1024)); |
| } |
| |
| int |
| /****************************************************/ |
| mmc_init(int verbose) |
| /****************************************************/ |
| { |
| int retries, rc = -ENODEV; |
| uint32_t cid_resp[4]; |
| uint32_t *resp; |
| uint16_t rca = 0; |
| |
| /* Reset device interface type */ |
| mmc_dev.if_type = IF_TYPE_UNKNOWN; |
| |
| #if defined (CONFIG_LUBBOCK) || (defined (CONFIG_GUMSTIX) && !defined(CONFIG_PXA27X)) |
| set_GPIO_mode(GPIO6_MMCCLK_MD); |
| set_GPIO_mode(GPIO8_MMCCS0_MD); |
| #endif |
| CKEN |= CKEN12_MMC; /* enable MMC unit clock */ |
| |
| MMC_CLKRT = MMC_CLKRT_0_3125MHZ; |
| MMC_RESTO = MMC_RES_TO_MAX; |
| MMC_SPI = MMC_SPI_DISABLE; |
| |
| /* reset */ |
| mmc_cmd(MMC_CMD_GO_IDLE_STATE, 0, 0, MMC_CMDAT_INIT | MMC_CMDAT_R0); |
| udelay(200000); |
| retries = 3; |
| while (retries--) { |
| resp = mmc_cmd(MMC_CMD_APP_CMD, 0, 0, MMC_CMDAT_R1); |
| if (!(resp[0] & 0x00000020)) { /* Card does not support APP_CMD */ |
| debug("Card does not support APP_CMD\n"); |
| break; |
| } |
| |
| /* Select 3.2-3.3V and 3.3-3.4V */ |
| resp = mmc_cmd(SD_CMD_APP_SEND_OP_COND, 0x0030, 0x0000, |
| MMC_CMDAT_R3 | (retries < 2 ? 0 |
| : MMC_CMDAT_INIT)); |
| if (resp[0] & 0x80000000) { |
| mmc_dev.if_type = IF_TYPE_SD; |
| debug("Detected SD card\n"); |
| break; |
| } |
| #ifdef CONFIG_PXA27X |
| udelay(10000); |
| #else |
| udelay(200000); |
| #endif |
| } |
| |
| if (retries <= 0 || !(IF_TYPE_SD == mmc_dev.if_type)) { |
| debug("Failed to detect SD Card, trying MMC\n"); |
| resp = |
| mmc_cmd(MMC_CMD_SEND_OP_COND, 0x00ff, 0x8000, MMC_CMDAT_R3); |
| |
| retries = 10; |
| while (retries-- && resp && !(resp[0] & 0x80000000)) { |
| #ifdef CONFIG_PXA27X |
| udelay(10000); |
| #else |
| udelay(200000); |
| #endif |
| resp = |
| mmc_cmd(MMC_CMD_SEND_OP_COND, 0x00ff, 0x8000, |
| MMC_CMDAT_R3); |
| } |
| } |
| |
| /* try to get card id */ |
| resp = |
| mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, 0, MMC_CMDAT_R2 | MMC_CMDAT_BUSY); |
| if (resp) { |
| memcpy(cid_resp, resp, sizeof(cid_resp)); |
| |
| /* MMC exists, get CSD too */ |
| resp = mmc_cmd(MMC_CMD_SET_RELATIVE_ADDR, 0, 0, MMC_CMDAT_R1); |
| if (IF_TYPE_SD == mmc_dev.if_type) |
| rca = ((resp[0] & 0xffff0000) >> 16); |
| resp = mmc_cmd(MMC_CMD_SEND_CSD, rca, 0, MMC_CMDAT_R2); |
| if (resp) { |
| mmc_decode_csd(resp); |
| rc = 0; |
| mmc_ready = 1; |
| } |
| |
| mmc_decode_cid(cid_resp); |
| } |
| |
| MMC_CLKRT = 0; /* 20 MHz */ |
| resp = mmc_cmd(MMC_CMD_SELECT_CARD, rca, 0, MMC_CMDAT_R1); |
| |
| #ifdef CONFIG_PXA27X |
| if (IF_TYPE_SD == mmc_dev.if_type) { |
| resp = mmc_cmd(MMC_CMD_APP_CMD, rca, 0, MMC_CMDAT_R1); |
| resp = mmc_cmd(SD_CMD_APP_SET_BUS_WIDTH, 0, 2, MMC_CMDAT_R1); |
| wide = MMC_CMDAT_SD_4DAT; |
| } |
| #endif |
| |
| fat_register_device(&mmc_dev, 1); /* partitions start counting with 1 */ |
| |
| return rc; |
| } |
| |
| int mmc_ident(block_dev_desc_t * dev) |
| { |
| return 0; |
| } |
| |
| int mmc2info(ulong addr) |
| { |
| if (addr >= CONFIG_SYS_MMC_BASE |
| && addr < CONFIG_SYS_MMC_BASE + (mmc_dev.lba * mmc_dev.blksz)) { |
| return 1; |
| } |
| return 0; |
| } |
| |
| #endif /* CONFIG_MMC */ |
