* 'master' of git://git.denx.de/u-boot-avr32: atmel_mci.h: remove outdated register macros doc/git-mailrc: add <me> to avr32 alias ATMEL: remove old atmel_mci driver ATMEL: use generic mmc frameworkmaster
Wolfgang Denk
13 years ago
commit
6e94125f9c
@ -1,533 +0,0 @@ |
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/*
|
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* Copyright (C) 2004-2006 Atmel Corporation |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include <common.h> |
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|
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#include <part.h> |
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#include <mmc.h> |
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#include <asm/io.h> |
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#include <asm/errno.h> |
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#include <asm/byteorder.h> |
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#include <asm/arch/clk.h> |
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#include <asm/arch/hardware.h> |
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|
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#include "atmel_mci.h" |
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|
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#ifdef DEBUG |
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#define pr_debug(fmt, args...) printf(fmt, ##args) |
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#else |
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#define pr_debug(...) do { } while(0) |
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#endif |
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|
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#ifndef CONFIG_SYS_MMC_CLK_OD |
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#define CONFIG_SYS_MMC_CLK_OD 150000 |
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#endif |
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|
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#ifndef CONFIG_SYS_MMC_CLK_PP |
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#define CONFIG_SYS_MMC_CLK_PP 5000000 |
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#endif |
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|
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#ifndef CONFIG_SYS_MMC_OP_COND |
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#define CONFIG_SYS_MMC_OP_COND 0x00100000 |
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#endif |
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|
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#define MMC_DEFAULT_BLKLEN 512 |
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#define MMC_DEFAULT_RCA 1 |
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|
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static unsigned int mmc_rca; |
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static int mmc_card_is_sd; |
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static block_dev_desc_t mmc_blkdev; |
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|
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block_dev_desc_t *mmc_get_dev(int dev) |
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{ |
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return &mmc_blkdev; |
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} |
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|
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static void mci_set_mode(unsigned long hz, unsigned long blklen) |
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{ |
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unsigned long bus_hz; |
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unsigned long clkdiv; |
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bus_hz = get_mci_clk_rate(); |
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clkdiv = (bus_hz / hz) / 2 - 1; |
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|
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pr_debug("mmc: setting clock %lu Hz, block size %lu\n", |
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hz, blklen); |
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|
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if (clkdiv & ~255UL) { |
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clkdiv = 255; |
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printf("mmc: clock %lu too low; setting CLKDIV to 255\n", |
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hz); |
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} |
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|
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blklen &= 0xfffc; |
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mmci_writel(MR, (MMCI_BF(CLKDIV, clkdiv) |
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| MMCI_BF(BLKLEN, blklen) |
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| MMCI_BIT(RDPROOF) |
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| MMCI_BIT(WRPROOF))); |
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} |
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|
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#define RESP_NO_CRC 1 |
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#define R1 MMCI_BF(RSPTYP, 1) |
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#define R2 MMCI_BF(RSPTYP, 2) |
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#define R3 (R1 | RESP_NO_CRC) |
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#define R6 R1 |
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#define NID MMCI_BF(MAXLAT, 0) |
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#define NCR MMCI_BF(MAXLAT, 1) |
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#define TRCMD_START MMCI_BF(TRCMD, 1) |
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#define TRDIR_READ MMCI_BF(TRDIR, 1) |
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#define TRTYP_BLOCK MMCI_BF(TRTYP, 0) |
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#define INIT_CMD MMCI_BF(SPCMD, 1) |
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#define OPEN_DRAIN MMCI_BF(OPDCMD, 1) |
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|
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#define ERROR_FLAGS (MMCI_BIT(DTOE) \ |
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| MMCI_BIT(RDIRE) \
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| MMCI_BIT(RENDE) \
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| MMCI_BIT(RINDE) \
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| MMCI_BIT(RTOE)) |
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static int |
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mmc_cmd(unsigned long cmd, unsigned long arg, |
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void *resp, unsigned long flags) |
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{ |
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unsigned long *response = resp; |
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int i, response_words = 0; |
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unsigned long error_flags; |
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u32 status; |
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pr_debug("mmc: CMD%lu 0x%lx (flags 0x%lx)\n", |
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cmd, arg, flags); |
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error_flags = ERROR_FLAGS; |
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if (!(flags & RESP_NO_CRC)) |
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error_flags |= MMCI_BIT(RCRCE); |
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flags &= ~MMCI_BF(CMDNB, ~0UL); |
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if (MMCI_BFEXT(RSPTYP, flags) == MMCI_RSPTYP_48_BIT_RESP) |
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response_words = 1; |
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else if (MMCI_BFEXT(RSPTYP, flags) == MMCI_RSPTYP_136_BIT_RESP) |
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response_words = 4; |
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mmci_writel(ARGR, arg); |
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mmci_writel(CMDR, cmd | flags); |
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do { |
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udelay(40); |
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status = mmci_readl(SR); |
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} while (!(status & MMCI_BIT(CMDRDY))); |
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pr_debug("mmc: status 0x%08x\n", status); |
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if (status & error_flags) { |
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printf("mmc: command %lu failed (status: 0x%08x)\n", |
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cmd, status); |
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return -EIO; |
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} |
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if (response_words) |
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pr_debug("mmc: response:"); |
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for (i = 0; i < response_words; i++) { |
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response[i] = mmci_readl(RSPR); |
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pr_debug(" %08lx", response[i]); |
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} |
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pr_debug("\n"); |
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return 0; |
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} |
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static int mmc_acmd(unsigned long cmd, unsigned long arg, |
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void *resp, unsigned long flags) |
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{ |
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unsigned long aresp[4]; |
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int ret; |
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/*
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* Seems like the APP_CMD part of an ACMD has 64 cycles max |
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* latency even though the ACMD part doesn't. This isn't |
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* entirely clear in the SD Card spec, but some cards refuse |
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* to work if we attempt to use 5 cycles max latency here... |
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*/ |
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ret = mmc_cmd(MMC_CMD_APP_CMD, 0, aresp, |
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R1 | NCR | (flags & OPEN_DRAIN)); |
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if (ret) |
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return ret; |
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if ((aresp[0] & (R1_ILLEGAL_COMMAND | R1_APP_CMD)) != R1_APP_CMD) |
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return -ENODEV; |
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ret = mmc_cmd(cmd, arg, resp, flags); |
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return ret; |
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} |
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static unsigned long |
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mmc_bread(int dev, unsigned long start, lbaint_t blkcnt, |
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void *buffer) |
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{ |
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int ret, i = 0; |
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unsigned long resp[4]; |
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unsigned long card_status, data; |
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unsigned long wordcount; |
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u32 *p = buffer; |
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u32 status; |
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if (blkcnt == 0) |
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return 0; |
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pr_debug("mmc_bread: dev %d, start %lx, blkcnt %lx\n", |
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dev, start, blkcnt); |
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/* Put the device into Transfer state */ |
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ret = mmc_cmd(MMC_CMD_SELECT_CARD, mmc_rca << 16, resp, R1 | NCR); |
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if (ret) goto out; |
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/* Set block length */ |
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ret = mmc_cmd(MMC_CMD_SET_BLOCKLEN, mmc_blkdev.blksz, resp, R1 | NCR); |
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if (ret) goto out; |
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pr_debug("MCI_DTOR = %08lx\n", mmci_readl(DTOR)); |
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for (i = 0; i < blkcnt; i++, start++) { |
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ret = mmc_cmd(MMC_CMD_READ_SINGLE_BLOCK, |
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start * mmc_blkdev.blksz, resp, |
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(R1 | NCR | TRCMD_START | TRDIR_READ |
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| TRTYP_BLOCK)); |
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if (ret) goto out; |
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ret = -EIO; |
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wordcount = 0; |
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do { |
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do { |
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status = mmci_readl(SR); |
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if (status & (ERROR_FLAGS | MMCI_BIT(OVRE))) |
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goto read_error; |
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} while (!(status & MMCI_BIT(RXRDY))); |
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if (status & MMCI_BIT(RXRDY)) { |
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data = mmci_readl(RDR); |
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/* pr_debug("%x\n", data); */ |
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*p++ = data; |
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wordcount++; |
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} |
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} while(wordcount < (mmc_blkdev.blksz / 4)); |
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pr_debug("mmc: read %u words, waiting for BLKE\n", wordcount); |
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do { |
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status = mmci_readl(SR); |
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} while (!(status & MMCI_BIT(BLKE))); |
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putc('.'); |
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} |
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out: |
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/* Put the device back into Standby state */ |
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mmc_cmd(MMC_CMD_SELECT_CARD, 0, resp, NCR); |
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return i; |
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read_error: |
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mmc_cmd(MMC_CMD_SEND_STATUS, mmc_rca << 16, &card_status, R1 | NCR); |
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printf("mmc: bread failed, status = %08x, card status = %08lx\n", |
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status, card_status); |
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goto out; |
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} |
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static void mmc_parse_cid(struct mmc_cid *cid, unsigned long *resp) |
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{ |
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cid->mid = resp[0] >> 24; |
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cid->oid = (resp[0] >> 8) & 0xffff; |
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cid->pnm[0] = resp[0]; |
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cid->pnm[1] = resp[1] >> 24; |
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cid->pnm[2] = resp[1] >> 16; |
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cid->pnm[3] = resp[1] >> 8; |
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cid->pnm[4] = resp[1]; |
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cid->pnm[5] = resp[2] >> 24; |
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cid->pnm[6] = 0; |
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cid->prv = resp[2] >> 16; |
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cid->psn = (resp[2] << 16) | (resp[3] >> 16); |
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cid->mdt = resp[3] >> 8; |
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} |
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static void sd_parse_cid(struct mmc_cid *cid, unsigned long *resp) |
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{ |
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cid->mid = resp[0] >> 24; |
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cid->oid = (resp[0] >> 8) & 0xffff; |
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cid->pnm[0] = resp[0]; |
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cid->pnm[1] = resp[1] >> 24; |
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cid->pnm[2] = resp[1] >> 16; |
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cid->pnm[3] = resp[1] >> 8; |
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cid->pnm[4] = resp[1]; |
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cid->pnm[5] = 0; |
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cid->pnm[6] = 0; |
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cid->prv = resp[2] >> 24; |
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cid->psn = (resp[2] << 8) | (resp[3] >> 24); |
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cid->mdt = (resp[3] >> 8) & 0x0fff; |
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} |
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static void mmc_dump_cid(const struct mmc_cid *cid) |
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{ |
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printf("Manufacturer ID: %02X\n", cid->mid); |
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printf("OEM/Application ID: %04X\n", cid->oid); |
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printf("Product name: %s\n", cid->pnm); |
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printf("Product Revision: %u.%u\n", |
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cid->prv >> 4, cid->prv & 0x0f); |
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printf("Product Serial Number: %lu\n", cid->psn); |
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printf("Manufacturing Date: %02u/%02u\n", |
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cid->mdt >> 4, cid->mdt & 0x0f); |
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} |
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static void mmc_dump_csd(const struct mmc_csd *csd) |
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{ |
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unsigned long *csd_raw = (unsigned long *)csd; |
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printf("CSD data: %08lx %08lx %08lx %08lx\n", |
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csd_raw[0], csd_raw[1], csd_raw[2], csd_raw[3]); |
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printf("CSD structure version: 1.%u\n", csd->csd_structure); |
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printf("MMC System Spec version: %u\n", csd->spec_vers); |
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printf("Card command classes: %03x\n", csd->ccc); |
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printf("Read block length: %u\n", 1 << csd->read_bl_len); |
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if (csd->read_bl_partial) |
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puts("Supports partial reads\n"); |
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else |
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puts("Does not support partial reads\n"); |
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printf("Write block length: %u\n", 1 << csd->write_bl_len); |
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if (csd->write_bl_partial) |
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puts("Supports partial writes\n"); |
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else |
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puts("Does not support partial writes\n"); |
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if (csd->wp_grp_enable) |
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printf("Supports group WP: %u\n", csd->wp_grp_size + 1); |
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else |
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puts("Does not support group WP\n"); |
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printf("Card capacity: %u bytes\n", |
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(csd->c_size + 1) * (1 << (csd->c_size_mult + 2)) * |
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(1 << csd->read_bl_len)); |
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printf("File format: %u/%u\n", |
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csd->file_format_grp, csd->file_format); |
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puts("Write protection: "); |
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if (csd->perm_write_protect) |
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puts(" permanent"); |
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if (csd->tmp_write_protect) |
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puts(" temporary"); |
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putc('\n'); |
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} |
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|
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static int mmc_idle_cards(void) |
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{ |
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int ret; |
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|
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/* Reset and initialize all cards */ |
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ret = mmc_cmd(MMC_CMD_GO_IDLE_STATE, 0, NULL, 0); |
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if (ret) |
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return ret; |
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|
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/* Keep the bus idle for 74 clock cycles */ |
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return mmc_cmd(0, 0, NULL, INIT_CMD); |
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} |
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|
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static int sd_init_card(struct mmc_cid *cid, int verbose) |
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{ |
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unsigned long resp[4]; |
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int i, ret = 0; |
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|
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mmc_idle_cards(); |
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for (i = 0; i < 1000; i++) { |
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ret = mmc_acmd(SD_CMD_APP_SEND_OP_COND, CONFIG_SYS_MMC_OP_COND, |
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resp, R3 | NID); |
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if (ret || (resp[0] & 0x80000000)) |
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break; |
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ret = -ETIMEDOUT; |
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} |
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|
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if (ret) |
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return ret; |
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|
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ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, R2 | NID); |
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if (ret) |
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return ret; |
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sd_parse_cid(cid, resp); |
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if (verbose) |
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mmc_dump_cid(cid); |
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|
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/* Get RCA of the card that responded */ |
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ret = mmc_cmd(SD_CMD_SEND_RELATIVE_ADDR, 0, resp, R6 | NCR); |
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if (ret) |
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return ret; |
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|
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mmc_rca = resp[0] >> 16; |
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if (verbose) |
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printf("SD Card detected (RCA %u)\n", mmc_rca); |
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mmc_card_is_sd = 1; |
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return 0; |
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} |
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|
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static int mmc_init_card(struct mmc_cid *cid, int verbose) |
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{ |
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unsigned long resp[4]; |
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int i, ret = 0; |
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|
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mmc_idle_cards(); |
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for (i = 0; i < 1000; i++) { |
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ret = mmc_cmd(MMC_CMD_SEND_OP_COND, CONFIG_SYS_MMC_OP_COND, resp, |
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R3 | NID | OPEN_DRAIN); |
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if (ret || (resp[0] & 0x80000000)) |
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break; |
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ret = -ETIMEDOUT; |
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} |
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|
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if (ret) |
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return ret; |
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|
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/* Get CID of all cards. FIXME: Support more than one card */ |
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ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, R2 | NID | OPEN_DRAIN); |
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if (ret) |
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return ret; |
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mmc_parse_cid(cid, resp); |
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if (verbose) |
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mmc_dump_cid(cid); |
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|
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/* Set Relative Address of the card that responded */ |
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ret = mmc_cmd(MMC_CMD_SET_RELATIVE_ADDR, mmc_rca << 16, resp, |
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R1 | NCR | OPEN_DRAIN); |
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return ret; |
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} |
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|
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static void mci_set_data_timeout(struct mmc_csd *csd) |
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{ |
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static const unsigned int dtomul_to_shift[] = { |
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0, 4, 7, 8, 10, 12, 16, 20, |
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}; |
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static const unsigned int taac_exp[] = { |
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1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, |
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}; |
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static const unsigned int taac_mant[] = { |
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0, 10, 12, 13, 15, 60, 25, 30, |
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35, 40, 45, 50, 55, 60, 70, 80, |
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}; |
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unsigned int timeout_ns, timeout_clks; |
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unsigned int e, m; |
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unsigned int dtocyc, dtomul; |
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unsigned int shift; |
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u32 dtor; |
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|
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e = csd->taac & 0x07; |
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m = (csd->taac >> 3) & 0x0f; |
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|
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timeout_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; |
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timeout_clks = csd->nsac * 100; |
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|
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timeout_clks += (((timeout_ns + 9) / 10) |
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* ((CONFIG_SYS_MMC_CLK_PP + 99999) / 100000) + 9999) / 10000; |
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if (!mmc_card_is_sd) |
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timeout_clks *= 10; |
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else |
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timeout_clks *= 100; |
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|
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dtocyc = timeout_clks; |
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dtomul = 0; |
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shift = 0; |
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while (dtocyc > 15 && dtomul < 8) { |
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dtomul++; |
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shift = dtomul_to_shift[dtomul]; |
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dtocyc = (timeout_clks + (1 << shift) - 1) >> shift; |
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} |
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|
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if (dtomul >= 8) { |
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dtomul = 7; |
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dtocyc = 15; |
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puts("Warning: Using maximum data timeout\n"); |
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} |
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|
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dtor = (MMCI_BF(DTOMUL, dtomul) |
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| MMCI_BF(DTOCYC, dtocyc)); |
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mmci_writel(DTOR, dtor); |
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|
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printf("mmc: Using %u cycles data timeout (DTOR=0x%x)\n", |
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dtocyc << shift, dtor); |
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} |
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|
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int mmc_legacy_init(int verbose) |
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{ |
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struct mmc_cid cid; |
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struct mmc_csd csd; |
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unsigned int max_blksz; |
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int ret; |
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|
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/* Initialize controller */ |
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mmci_writel(CR, MMCI_BIT(SWRST)); |
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mmci_writel(CR, MMCI_BIT(MCIEN)); |
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mmci_writel(DTOR, 0x5f); |
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mmci_writel(IDR, ~0UL); |
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mci_set_mode(CONFIG_SYS_MMC_CLK_OD, MMC_DEFAULT_BLKLEN); |
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|
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mmc_card_is_sd = 0; |
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|
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ret = sd_init_card(&cid, verbose); |
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if (ret) { |
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mmc_rca = MMC_DEFAULT_RCA; |
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ret = mmc_init_card(&cid, verbose); |
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} |
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if (ret) |
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return ret; |
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|
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/* Get CSD from the card */ |
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ret = mmc_cmd(MMC_CMD_SEND_CSD, mmc_rca << 16, &csd, R2 | NCR); |
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if (ret) |
||||
return ret; |
||||
if (verbose) |
||||
mmc_dump_csd(&csd); |
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|
||||
mci_set_data_timeout(&csd); |
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|
||||
/* Initialize the blockdev structure */ |
||||
mmc_blkdev.if_type = IF_TYPE_MMC; |
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mmc_blkdev.part_type = PART_TYPE_DOS; |
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mmc_blkdev.block_read = mmc_bread; |
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sprintf((char *)mmc_blkdev.vendor, |
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"Man %02x%04x Snr %08lx", |
||||
cid.mid, cid.oid, cid.psn); |
||||
strncpy((char *)mmc_blkdev.product, cid.pnm, |
||||
sizeof(mmc_blkdev.product)); |
||||
sprintf((char *)mmc_blkdev.revision, "%x %x", |
||||
cid.prv >> 4, cid.prv & 0x0f); |
||||
|
||||
/*
|
||||
* If we can't use 512 byte blocks, refuse to deal with the |
||||
* card. Tons of code elsewhere seems to depend on this. |
||||
*/ |
||||
max_blksz = 1 << csd.read_bl_len; |
||||
if (max_blksz < 512 || (max_blksz > 512 && !csd.read_bl_partial)) { |
||||
printf("Card does not support 512 byte reads, aborting.\n"); |
||||
return -ENODEV; |
||||
} |
||||
mmc_blkdev.blksz = 512; |
||||
mmc_blkdev.lba = (csd.c_size + 1) * (1 << (csd.c_size_mult + 2)); |
||||
|
||||
mci_set_mode(CONFIG_SYS_MMC_CLK_PP, mmc_blkdev.blksz); |
||||
|
||||
#if 0 |
||||
if (fat_register_device(&mmc_blkdev, 1)) |
||||
printf("Could not register MMC fat device\n"); |
||||
#else |
||||
init_part(&mmc_blkdev); |
||||
#endif |
||||
|
||||
return 0; |
||||
} |
||||
Loading…
Reference in new issue