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![Stefano Babic](/assets/img/avatar_default.png)
Signed-off-by: Stefano Babic <sbabic@denx.de> Acked-by: Scott Wood <scottwood@freescale.com>
1394 lines
34 KiB
C
1394 lines
34 KiB
C
/*
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* Copyright 2004-2007 Freescale Semiconductor, Inc.
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* Copyright 2008 Sascha Hauer, kernel@pengutronix.de
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* Copyright 2009 Ilya Yanok, <yanok@emcraft.com>
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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
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <common.h>
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#include <nand.h>
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#include <linux/err.h>
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#include <asm/io.h>
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#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX35)
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#include <asm/arch/imx-regs.h>
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#endif
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#define DRIVER_NAME "mxc_nand"
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/*
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* TODO: Use same register defs here as nand_spl mxc nand driver.
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*/
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/*
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* Register map and bit definitions for the Freescale NAND Flash Controller
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* present in various i.MX devices.
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*
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* MX31 and MX27 have version 1 which has
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* 4 512 byte main buffers and
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* 4 16 byte spare buffers
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* to support up to 2K byte pagesize nand.
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* Reading or writing a 2K page requires 4 FDI/FDO cycles.
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*
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* MX25 has version 1.1 which has
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* 8 512 byte main buffers and
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* 8 64 byte spare buffers
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* to support up to 4K byte pagesize nand.
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* Reading or writing a 2K or 4K page requires only 1 FDI/FDO cycle.
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* Also some of registers are moved and/or changed meaning as seen below.
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*/
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#if defined(CONFIG_MX31) || defined(CONFIG_MX27)
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#define MXC_NFC_V1
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#elif defined(CONFIG_MX25) || defined(CONFIG_MX35)
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#define MXC_NFC_V1_1
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#else
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#warning "MXC NFC version not defined"
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#endif
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#if defined(MXC_NFC_V1)
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#define NAND_MXC_NR_BUFS 4
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#define NAND_MXC_SPARE_BUF_SIZE 16
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#define NAND_MXC_REG_OFFSET 0xe00
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#define is_mxc_nfc_11() 0
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#elif defined(MXC_NFC_V1_1)
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#define NAND_MXC_NR_BUFS 8
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#define NAND_MXC_SPARE_BUF_SIZE 64
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#define NAND_MXC_REG_OFFSET 0x1e00
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#define is_mxc_nfc_11() 1
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#else
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#error "define CONFIG_NAND_MXC_VXXX to use mtd mxc nand driver"
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#endif
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struct nfc_regs {
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uint8_t main_area[NAND_MXC_NR_BUFS][0x200];
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uint8_t spare_area[NAND_MXC_NR_BUFS][NAND_MXC_SPARE_BUF_SIZE];
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/*
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* reserved size is offset of nfc registers
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* minus total main and spare sizes
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*/
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uint8_t reserved1[NAND_MXC_REG_OFFSET
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- NAND_MXC_NR_BUFS * (512 + NAND_MXC_SPARE_BUF_SIZE)];
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#if defined(MXC_NFC_V1)
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uint16_t nfc_buf_size;
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uint16_t reserved2;
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uint16_t nfc_buf_addr;
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uint16_t nfc_flash_addr;
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uint16_t nfc_flash_cmd;
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uint16_t nfc_config;
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uint16_t nfc_ecc_status_result;
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uint16_t nfc_rsltmain_area;
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uint16_t nfc_rsltspare_area;
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uint16_t nfc_wrprot;
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uint16_t nfc_unlockstart_blkaddr;
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uint16_t nfc_unlockend_blkaddr;
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uint16_t nfc_nf_wrprst;
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uint16_t nfc_config1;
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uint16_t nfc_config2;
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#elif defined(MXC_NFC_V1_1)
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uint16_t reserved2[2];
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uint16_t nfc_buf_addr;
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uint16_t nfc_flash_addr;
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uint16_t nfc_flash_cmd;
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uint16_t nfc_config;
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uint16_t nfc_ecc_status_result;
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uint16_t nfc_ecc_status_result2;
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uint16_t nfc_spare_area_size;
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uint16_t nfc_wrprot;
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uint16_t reserved3[2];
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uint16_t nfc_nf_wrprst;
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uint16_t nfc_config1;
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uint16_t nfc_config2;
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uint16_t reserved4;
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uint16_t nfc_unlockstart_blkaddr;
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uint16_t nfc_unlockend_blkaddr;
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uint16_t nfc_unlockstart_blkaddr1;
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uint16_t nfc_unlockend_blkaddr1;
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uint16_t nfc_unlockstart_blkaddr2;
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uint16_t nfc_unlockend_blkaddr2;
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uint16_t nfc_unlockstart_blkaddr3;
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uint16_t nfc_unlockend_blkaddr3;
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#endif
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};
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/*
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* Set INT to 0, FCMD to 1, rest to 0 in NFC_CONFIG2 Register
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* for Command operation
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*/
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#define NFC_CMD 0x1
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/*
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* Set INT to 0, FADD to 1, rest to 0 in NFC_CONFIG2 Register
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* for Address operation
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*/
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#define NFC_ADDR 0x2
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/*
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* Set INT to 0, FDI to 1, rest to 0 in NFC_CONFIG2 Register
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* for Input operation
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*/
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#define NFC_INPUT 0x4
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/*
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* Set INT to 0, FDO to 001, rest to 0 in NFC_CONFIG2 Register
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* for Data Output operation
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*/
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#define NFC_OUTPUT 0x8
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/*
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* Set INT to 0, FD0 to 010, rest to 0 in NFC_CONFIG2 Register
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* for Read ID operation
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*/
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#define NFC_ID 0x10
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/*
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* Set INT to 0, FDO to 100, rest to 0 in NFC_CONFIG2 Register
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* for Read Status operation
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*/
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#define NFC_STATUS 0x20
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/*
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* Set INT to 1, rest to 0 in NFC_CONFIG2 Register for Read
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* Status operation
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*/
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#define NFC_INT 0x8000
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#ifdef MXC_NFC_V1_1
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#define NFC_4_8N_ECC (1 << 0)
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#else
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#define NFC_4_8N_ECC 0
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#endif
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#define NFC_SP_EN (1 << 2)
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#define NFC_ECC_EN (1 << 3)
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#define NFC_BIG (1 << 5)
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#define NFC_RST (1 << 6)
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#define NFC_CE (1 << 7)
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#define NFC_ONE_CYCLE (1 << 8)
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typedef enum {false, true} bool;
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struct mxc_nand_host {
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struct mtd_info mtd;
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struct nand_chip *nand;
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struct nfc_regs __iomem *regs;
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int spare_only;
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int status_request;
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int pagesize_2k;
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int clk_act;
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uint16_t col_addr;
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unsigned int page_addr;
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};
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static struct mxc_nand_host mxc_host;
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static struct mxc_nand_host *host = &mxc_host;
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/* Define delays in microsec for NAND device operations */
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#define TROP_US_DELAY 2000
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/* Macros to get byte and bit positions of ECC */
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#define COLPOS(x) ((x) >> 3)
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#define BITPOS(x) ((x) & 0xf)
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/* Define single bit Error positions in Main & Spare area */
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#define MAIN_SINGLEBIT_ERROR 0x4
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#define SPARE_SINGLEBIT_ERROR 0x1
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/* OOB placement block for use with hardware ecc generation */
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#if defined(MXC_NFC_V1)
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#ifndef CONFIG_SYS_NAND_LARGEPAGE
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static struct nand_ecclayout nand_hw_eccoob = {
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.eccbytes = 5,
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.eccpos = {6, 7, 8, 9, 10},
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.oobfree = { {0, 5}, {11, 5}, }
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};
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#else
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static struct nand_ecclayout nand_hw_eccoob2k = {
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.eccbytes = 20,
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.eccpos = {
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6, 7, 8, 9, 10,
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22, 23, 24, 25, 26,
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38, 39, 40, 41, 42,
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54, 55, 56, 57, 58,
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},
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.oobfree = { {2, 4}, {11, 11}, {27, 11}, {43, 11}, {59, 5} },
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};
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#endif
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#elif defined(MXC_NFC_V1_1)
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#ifndef CONFIG_SYS_NAND_LARGEPAGE
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static struct nand_ecclayout nand_hw_eccoob = {
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.eccbytes = 9,
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.eccpos = {7, 8, 9, 10, 11, 12, 13, 14, 15},
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.oobfree = { {2, 5} }
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};
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#else
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static struct nand_ecclayout nand_hw_eccoob2k = {
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.eccbytes = 36,
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.eccpos = {
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7, 8, 9, 10, 11, 12, 13, 14, 15,
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23, 24, 25, 26, 27, 28, 29, 30, 31,
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39, 40, 41, 42, 43, 44, 45, 46, 47,
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55, 56, 57, 58, 59, 60, 61, 62, 63,
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},
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.oobfree = { {2, 5}, {16, 7}, {32, 7}, {48, 7} },
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};
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#endif
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#endif
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#ifdef CONFIG_MX27
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static int is_16bit_nand(void)
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{
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struct system_control_regs *sc_regs =
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(struct system_control_regs *)IMX_SYSTEM_CTL_BASE;
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if (readl(&sc_regs->fmcr) & NF_16BIT_SEL)
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return 1;
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else
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return 0;
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}
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#elif defined(CONFIG_MX31)
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static int is_16bit_nand(void)
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{
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struct clock_control_regs *sc_regs =
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(struct clock_control_regs *)CCM_BASE;
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if (readl(&sc_regs->rcsr) & CCM_RCSR_NF16B)
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return 1;
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else
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return 0;
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}
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#elif defined(CONFIG_MX25) || defined(CONFIG_MX35)
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static int is_16bit_nand(void)
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{
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struct ccm_regs *ccm =
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(struct ccm_regs *)IMX_CCM_BASE;
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if (readl(&ccm->rcsr) & CCM_RCSR_NF_16BIT_SEL)
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return 1;
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else
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return 0;
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}
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#else
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#warning "8/16 bit NAND autodetection not supported"
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static int is_16bit_nand(void)
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{
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return 0;
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}
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#endif
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static uint32_t *mxc_nand_memcpy32(uint32_t *dest, uint32_t *source, size_t size)
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{
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uint32_t *d = dest;
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size >>= 2;
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while (size--)
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__raw_writel(__raw_readl(source++), d++);
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return dest;
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}
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/*
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* This function polls the NANDFC to wait for the basic operation to
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* complete by checking the INT bit of config2 register.
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*/
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static void wait_op_done(struct mxc_nand_host *host, int max_retries,
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uint16_t param)
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{
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uint32_t tmp;
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while (max_retries-- > 0) {
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if (readw(&host->regs->nfc_config2) & NFC_INT) {
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tmp = readw(&host->regs->nfc_config2);
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tmp &= ~NFC_INT;
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writew(tmp, &host->regs->nfc_config2);
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break;
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}
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udelay(1);
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}
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if (max_retries < 0) {
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MTDDEBUG(MTD_DEBUG_LEVEL0, "%s(%d): INT not set\n",
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__func__, param);
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}
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}
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/*
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* This function issues the specified command to the NAND device and
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* waits for completion.
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*/
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static void send_cmd(struct mxc_nand_host *host, uint16_t cmd)
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{
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MTDDEBUG(MTD_DEBUG_LEVEL3, "send_cmd(host, 0x%x)\n", cmd);
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writew(cmd, &host->regs->nfc_flash_cmd);
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writew(NFC_CMD, &host->regs->nfc_config2);
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/* Wait for operation to complete */
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wait_op_done(host, TROP_US_DELAY, cmd);
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}
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/*
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* This function sends an address (or partial address) to the
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* NAND device. The address is used to select the source/destination for
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* a NAND command.
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*/
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static void send_addr(struct mxc_nand_host *host, uint16_t addr)
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{
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MTDDEBUG(MTD_DEBUG_LEVEL3, "send_addr(host, 0x%x)\n", addr);
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writew(addr, &host->regs->nfc_flash_addr);
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writew(NFC_ADDR, &host->regs->nfc_config2);
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/* Wait for operation to complete */
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wait_op_done(host, TROP_US_DELAY, addr);
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}
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/*
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* This function requests the NANDFC to initate the transfer
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* of data currently in the NANDFC RAM buffer to the NAND device.
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*/
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static void send_prog_page(struct mxc_nand_host *host, uint8_t buf_id,
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int spare_only)
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{
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if (spare_only)
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MTDDEBUG(MTD_DEBUG_LEVEL1, "send_prog_page (%d)\n", spare_only);
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if (is_mxc_nfc_11()) {
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int i;
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/*
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* The controller copies the 64 bytes of spare data from
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* the first 16 bytes of each of the 4 64 byte spare buffers.
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* Copy the contiguous data starting in spare_area[0] to
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* the four spare area buffers.
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*/
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for (i = 1; i < 4; i++) {
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void __iomem *src = &host->regs->spare_area[0][i * 16];
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void __iomem *dst = &host->regs->spare_area[i][0];
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mxc_nand_memcpy32(dst, src, 16);
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}
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}
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writew(buf_id, &host->regs->nfc_buf_addr);
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/* Configure spare or page+spare access */
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if (!host->pagesize_2k) {
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uint16_t config1 = readw(&host->regs->nfc_config1);
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if (spare_only)
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config1 |= NFC_SP_EN;
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else
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config1 &= ~(NFC_SP_EN);
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writew(config1, &host->regs->nfc_config1);
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}
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writew(NFC_INPUT, &host->regs->nfc_config2);
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/* Wait for operation to complete */
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wait_op_done(host, TROP_US_DELAY, spare_only);
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}
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/*
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* Requests NANDFC to initated the transfer of data from the
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* NAND device into in the NANDFC ram buffer.
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*/
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static void send_read_page(struct mxc_nand_host *host, uint8_t buf_id,
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int spare_only)
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{
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MTDDEBUG(MTD_DEBUG_LEVEL3, "send_read_page (%d)\n", spare_only);
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writew(buf_id, &host->regs->nfc_buf_addr);
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/* Configure spare or page+spare access */
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if (!host->pagesize_2k) {
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uint32_t config1 = readw(&host->regs->nfc_config1);
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if (spare_only)
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config1 |= NFC_SP_EN;
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else
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config1 &= ~NFC_SP_EN;
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writew(config1, &host->regs->nfc_config1);
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}
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writew(NFC_OUTPUT, &host->regs->nfc_config2);
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/* Wait for operation to complete */
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wait_op_done(host, TROP_US_DELAY, spare_only);
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if (is_mxc_nfc_11()) {
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int i;
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/*
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* The controller copies the 64 bytes of spare data to
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* the first 16 bytes of each of the 4 spare buffers.
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* Make the data contiguous starting in spare_area[0].
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*/
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for (i = 1; i < 4; i++) {
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void __iomem *src = &host->regs->spare_area[i][0];
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void __iomem *dst = &host->regs->spare_area[0][i * 16];
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mxc_nand_memcpy32(dst, src, 16);
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}
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}
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}
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/* Request the NANDFC to perform a read of the NAND device ID. */
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static void send_read_id(struct mxc_nand_host *host)
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{
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uint16_t tmp;
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/* NANDFC buffer 0 is used for device ID output */
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writew(0x0, &host->regs->nfc_buf_addr);
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/* Read ID into main buffer */
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tmp = readw(&host->regs->nfc_config1);
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tmp &= ~NFC_SP_EN;
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writew(tmp, &host->regs->nfc_config1);
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writew(NFC_ID, &host->regs->nfc_config2);
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/* Wait for operation to complete */
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wait_op_done(host, TROP_US_DELAY, 0);
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}
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|
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/*
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* This function requests the NANDFC to perform a read of the
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* NAND device status and returns the current status.
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*/
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static uint16_t get_dev_status(struct mxc_nand_host *host)
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{
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void __iomem *main_buf = host->regs->main_area[1];
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uint32_t store;
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uint16_t ret, tmp;
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/* Issue status request to NAND device */
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/* store the main area1 first word, later do recovery */
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store = readl(main_buf);
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/* NANDFC buffer 1 is used for device status */
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writew(1, &host->regs->nfc_buf_addr);
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/* Read status into main buffer */
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tmp = readw(&host->regs->nfc_config1);
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tmp &= ~NFC_SP_EN;
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writew(tmp, &host->regs->nfc_config1);
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writew(NFC_STATUS, &host->regs->nfc_config2);
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|
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/* Wait for operation to complete */
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wait_op_done(host, TROP_US_DELAY, 0);
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/*
|
|
* Status is placed in first word of main buffer
|
|
* get status, then recovery area 1 data
|
|
*/
|
|
ret = readw(main_buf);
|
|
writel(store, main_buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* This function is used by upper layer to checks if device is ready */
|
|
static int mxc_nand_dev_ready(struct mtd_info *mtd)
|
|
{
|
|
/*
|
|
* NFC handles R/B internally. Therefore, this function
|
|
* always returns status as ready.
|
|
*/
|
|
return 1;
|
|
}
|
|
|
|
#ifdef CONFIG_MXC_NAND_HWECC
|
|
static void mxc_nand_enable_hwecc(struct mtd_info *mtd, int mode)
|
|
{
|
|
/*
|
|
* If HW ECC is enabled, we turn it on during init. There is
|
|
* no need to enable again here.
|
|
*/
|
|
}
|
|
|
|
#ifdef MXC_NFC_V1_1
|
|
static void _mxc_nand_enable_hwecc(struct mtd_info *mtd, int on)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
uint16_t tmp = readw(&host->regs->nfc_config1);
|
|
|
|
if (on)
|
|
tmp |= NFC_ECC_EN;
|
|
else
|
|
tmp &= ~NFC_ECC_EN;
|
|
writew(tmp, &host->regs->nfc_config1);
|
|
}
|
|
|
|
static int mxc_nand_read_oob_syndrome(struct mtd_info *mtd,
|
|
struct nand_chip *chip,
|
|
int page, int sndcmd)
|
|
{
|
|
struct mxc_nand_host *host = chip->priv;
|
|
uint8_t *buf = chip->oob_poi;
|
|
int length = mtd->oobsize;
|
|
int eccpitch = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
|
|
uint8_t *bufpoi = buf;
|
|
int i, toread;
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL0,
|
|
"%s: Reading OOB area of page %u to oob %p\n",
|
|
__FUNCTION__, host->page_addr, buf);
|
|
|
|
chip->cmdfunc(mtd, NAND_CMD_READOOB, mtd->writesize, page);
|
|
for (i = 0; i < chip->ecc.steps; i++) {
|
|
toread = min_t(int, length, chip->ecc.prepad);
|
|
if (toread) {
|
|
chip->read_buf(mtd, bufpoi, toread);
|
|
bufpoi += toread;
|
|
length -= toread;
|
|
}
|
|
bufpoi += chip->ecc.bytes;
|
|
host->col_addr += chip->ecc.bytes;
|
|
length -= chip->ecc.bytes;
|
|
|
|
toread = min_t(int, length, chip->ecc.postpad);
|
|
if (toread) {
|
|
chip->read_buf(mtd, bufpoi, toread);
|
|
bufpoi += toread;
|
|
length -= toread;
|
|
}
|
|
}
|
|
if (length > 0)
|
|
chip->read_buf(mtd, bufpoi, length);
|
|
|
|
_mxc_nand_enable_hwecc(mtd, 0);
|
|
chip->cmdfunc(mtd, NAND_CMD_READOOB,
|
|
mtd->writesize + chip->ecc.prepad, page);
|
|
bufpoi = buf + chip->ecc.prepad;
|
|
length = mtd->oobsize - chip->ecc.prepad;
|
|
for (i = 0; i < chip->ecc.steps; i++) {
|
|
toread = min_t(int, length, chip->ecc.bytes);
|
|
chip->read_buf(mtd, bufpoi, toread);
|
|
bufpoi += eccpitch;
|
|
length -= eccpitch;
|
|
host->col_addr += chip->ecc.postpad + chip->ecc.prepad;
|
|
}
|
|
_mxc_nand_enable_hwecc(mtd, 1);
|
|
return 1;
|
|
}
|
|
|
|
static int mxc_nand_read_page_raw_syndrome(struct mtd_info *mtd,
|
|
struct nand_chip *chip,
|
|
uint8_t *buf,
|
|
int page)
|
|
{
|
|
struct mxc_nand_host *host = chip->priv;
|
|
int eccsize = chip->ecc.size;
|
|
int eccbytes = chip->ecc.bytes;
|
|
int eccpitch = eccbytes + chip->ecc.prepad + chip->ecc.postpad;
|
|
uint8_t *oob = chip->oob_poi;
|
|
int steps, size;
|
|
int n;
|
|
|
|
_mxc_nand_enable_hwecc(mtd, 0);
|
|
chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, host->page_addr);
|
|
|
|
for (n = 0, steps = chip->ecc.steps; steps > 0; n++, steps--) {
|
|
host->col_addr = n * eccsize;
|
|
chip->read_buf(mtd, buf, eccsize);
|
|
buf += eccsize;
|
|
|
|
host->col_addr = mtd->writesize + n * eccpitch;
|
|
if (chip->ecc.prepad) {
|
|
chip->read_buf(mtd, oob, chip->ecc.prepad);
|
|
oob += chip->ecc.prepad;
|
|
}
|
|
|
|
chip->read_buf(mtd, oob, eccbytes);
|
|
oob += eccbytes;
|
|
|
|
if (chip->ecc.postpad) {
|
|
chip->read_buf(mtd, oob, chip->ecc.postpad);
|
|
oob += chip->ecc.postpad;
|
|
}
|
|
}
|
|
|
|
size = mtd->oobsize - (oob - chip->oob_poi);
|
|
if (size)
|
|
chip->read_buf(mtd, oob, size);
|
|
_mxc_nand_enable_hwecc(mtd, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mxc_nand_read_page_syndrome(struct mtd_info *mtd,
|
|
struct nand_chip *chip,
|
|
uint8_t *buf,
|
|
int page)
|
|
{
|
|
struct mxc_nand_host *host = chip->priv;
|
|
int n, eccsize = chip->ecc.size;
|
|
int eccbytes = chip->ecc.bytes;
|
|
int eccpitch = eccbytes + chip->ecc.prepad + chip->ecc.postpad;
|
|
int eccsteps = chip->ecc.steps;
|
|
uint8_t *p = buf;
|
|
uint8_t *oob = chip->oob_poi;
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL1, "Reading page %u to buf %p oob %p\n",
|
|
host->page_addr, buf, oob);
|
|
|
|
/* first read out the data area and the available portion of OOB */
|
|
for (n = 0; eccsteps; n++, eccsteps--, p += eccsize) {
|
|
int stat;
|
|
|
|
host->col_addr = n * eccsize;
|
|
|
|
chip->read_buf(mtd, p, eccsize);
|
|
|
|
host->col_addr = mtd->writesize + n * eccpitch;
|
|
|
|
if (chip->ecc.prepad) {
|
|
chip->read_buf(mtd, oob, chip->ecc.prepad);
|
|
oob += chip->ecc.prepad;
|
|
}
|
|
|
|
stat = chip->ecc.correct(mtd, p, oob, NULL);
|
|
|
|
if (stat < 0)
|
|
mtd->ecc_stats.failed++;
|
|
else
|
|
mtd->ecc_stats.corrected += stat;
|
|
oob += eccbytes;
|
|
|
|
if (chip->ecc.postpad) {
|
|
chip->read_buf(mtd, oob, chip->ecc.postpad);
|
|
oob += chip->ecc.postpad;
|
|
}
|
|
}
|
|
|
|
/* Calculate remaining oob bytes */
|
|
n = mtd->oobsize - (oob - chip->oob_poi);
|
|
if (n)
|
|
chip->read_buf(mtd, oob, n);
|
|
|
|
/* Then switch ECC off and read the OOB area to get the ECC code */
|
|
_mxc_nand_enable_hwecc(mtd, 0);
|
|
chip->cmdfunc(mtd, NAND_CMD_READOOB, mtd->writesize, host->page_addr);
|
|
eccsteps = chip->ecc.steps;
|
|
oob = chip->oob_poi + chip->ecc.prepad;
|
|
for (n = 0; eccsteps; n++, eccsteps--, p += eccsize) {
|
|
host->col_addr = mtd->writesize +
|
|
n * eccpitch +
|
|
chip->ecc.prepad;
|
|
chip->read_buf(mtd, oob, eccbytes);
|
|
oob += eccbytes + chip->ecc.postpad;
|
|
}
|
|
_mxc_nand_enable_hwecc(mtd, 1);
|
|
return 0;
|
|
}
|
|
|
|
static int mxc_nand_write_oob_syndrome(struct mtd_info *mtd,
|
|
struct nand_chip *chip, int page)
|
|
{
|
|
struct mxc_nand_host *host = chip->priv;
|
|
int eccpitch = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
|
|
int length = mtd->oobsize;
|
|
int i, len, status, steps = chip->ecc.steps;
|
|
const uint8_t *bufpoi = chip->oob_poi;
|
|
|
|
chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page);
|
|
for (i = 0; i < steps; i++) {
|
|
len = min_t(int, length, eccpitch);
|
|
|
|
chip->write_buf(mtd, bufpoi, len);
|
|
bufpoi += len;
|
|
length -= len;
|
|
host->col_addr += chip->ecc.prepad + chip->ecc.postpad;
|
|
}
|
|
if (length > 0)
|
|
chip->write_buf(mtd, bufpoi, length);
|
|
|
|
chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
|
|
status = chip->waitfunc(mtd, chip);
|
|
return status & NAND_STATUS_FAIL ? -EIO : 0;
|
|
}
|
|
|
|
static void mxc_nand_write_page_raw_syndrome(struct mtd_info *mtd,
|
|
struct nand_chip *chip,
|
|
const uint8_t *buf)
|
|
{
|
|
struct mxc_nand_host *host = chip->priv;
|
|
int eccsize = chip->ecc.size;
|
|
int eccbytes = chip->ecc.bytes;
|
|
int eccpitch = eccbytes + chip->ecc.prepad + chip->ecc.postpad;
|
|
uint8_t *oob = chip->oob_poi;
|
|
int steps, size;
|
|
int n;
|
|
|
|
for (n = 0, steps = chip->ecc.steps; steps > 0; n++, steps--) {
|
|
host->col_addr = n * eccsize;
|
|
chip->write_buf(mtd, buf, eccsize);
|
|
buf += eccsize;
|
|
|
|
host->col_addr = mtd->writesize + n * eccpitch;
|
|
|
|
if (chip->ecc.prepad) {
|
|
chip->write_buf(mtd, oob, chip->ecc.prepad);
|
|
oob += chip->ecc.prepad;
|
|
}
|
|
|
|
host->col_addr += eccbytes;
|
|
oob += eccbytes;
|
|
|
|
if (chip->ecc.postpad) {
|
|
chip->write_buf(mtd, oob, chip->ecc.postpad);
|
|
oob += chip->ecc.postpad;
|
|
}
|
|
}
|
|
|
|
size = mtd->oobsize - (oob - chip->oob_poi);
|
|
if (size)
|
|
chip->write_buf(mtd, oob, size);
|
|
}
|
|
|
|
static void mxc_nand_write_page_syndrome(struct mtd_info *mtd,
|
|
struct nand_chip *chip,
|
|
const uint8_t *buf)
|
|
{
|
|
struct mxc_nand_host *host = chip->priv;
|
|
int i, n, eccsize = chip->ecc.size;
|
|
int eccbytes = chip->ecc.bytes;
|
|
int eccpitch = eccbytes + chip->ecc.prepad + chip->ecc.postpad;
|
|
int eccsteps = chip->ecc.steps;
|
|
const uint8_t *p = buf;
|
|
uint8_t *oob = chip->oob_poi;
|
|
|
|
chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
|
|
|
|
for (i = n = 0;
|
|
eccsteps;
|
|
n++, eccsteps--, i += eccbytes, p += eccsize) {
|
|
host->col_addr = n * eccsize;
|
|
|
|
chip->write_buf(mtd, p, eccsize);
|
|
|
|
host->col_addr = mtd->writesize + n * eccpitch;
|
|
|
|
if (chip->ecc.prepad) {
|
|
chip->write_buf(mtd, oob, chip->ecc.prepad);
|
|
oob += chip->ecc.prepad;
|
|
}
|
|
|
|
chip->write_buf(mtd, oob, eccbytes);
|
|
oob += eccbytes;
|
|
|
|
if (chip->ecc.postpad) {
|
|
chip->write_buf(mtd, oob, chip->ecc.postpad);
|
|
oob += chip->ecc.postpad;
|
|
}
|
|
}
|
|
|
|
/* Calculate remaining oob bytes */
|
|
i = mtd->oobsize - (oob - chip->oob_poi);
|
|
if (i)
|
|
chip->write_buf(mtd, oob, i);
|
|
}
|
|
|
|
static int mxc_nand_correct_data(struct mtd_info *mtd, u_char *dat,
|
|
u_char *read_ecc, u_char *calc_ecc)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
uint16_t ecc_status = readw(&host->regs->nfc_ecc_status_result);
|
|
int subpages = mtd->writesize / nand_chip->subpagesize;
|
|
int pg2blk_shift = nand_chip->phys_erase_shift -
|
|
nand_chip->page_shift;
|
|
|
|
do {
|
|
if ((ecc_status & 0xf) > 4) {
|
|
static int last_bad = -1;
|
|
|
|
if (last_bad != host->page_addr >> pg2blk_shift) {
|
|
last_bad = host->page_addr >> pg2blk_shift;
|
|
printk(KERN_DEBUG
|
|
"MXC_NAND: HWECC uncorrectable ECC error"
|
|
" in block %u page %u subpage %d\n",
|
|
last_bad, host->page_addr,
|
|
mtd->writesize / nand_chip->subpagesize
|
|
- subpages);
|
|
}
|
|
return -1;
|
|
}
|
|
ecc_status >>= 4;
|
|
subpages--;
|
|
} while (subpages > 0);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define mxc_nand_read_page_syndrome NULL
|
|
#define mxc_nand_read_page_raw_syndrome NULL
|
|
#define mxc_nand_read_oob_syndrome NULL
|
|
#define mxc_nand_write_page_syndrome NULL
|
|
#define mxc_nand_write_page_raw_syndrome NULL
|
|
#define mxc_nand_write_oob_syndrome NULL
|
|
#define mxc_nfc_11_nand_correct_data NULL
|
|
|
|
static int mxc_nand_correct_data(struct mtd_info *mtd, u_char *dat,
|
|
u_char *read_ecc, u_char *calc_ecc)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
|
|
/*
|
|
* 1-Bit errors are automatically corrected in HW. No need for
|
|
* additional correction. 2-Bit errors cannot be corrected by
|
|
* HW ECC, so we need to return failure
|
|
*/
|
|
uint16_t ecc_status = readw(&host->regs->nfc_ecc_status_result);
|
|
|
|
if (((ecc_status & 0x3) == 2) || ((ecc_status >> 2) == 2)) {
|
|
MTDDEBUG(MTD_DEBUG_LEVEL0,
|
|
"MXC_NAND: HWECC uncorrectable 2-bit ECC error\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int mxc_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
|
|
u_char *ecc_code)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static u_char mxc_nand_read_byte(struct mtd_info *mtd)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
uint8_t ret = 0;
|
|
uint16_t col;
|
|
uint16_t __iomem *main_buf =
|
|
(uint16_t __iomem *)host->regs->main_area[0];
|
|
uint16_t __iomem *spare_buf =
|
|
(uint16_t __iomem *)host->regs->spare_area[0];
|
|
union {
|
|
uint16_t word;
|
|
uint8_t bytes[2];
|
|
} nfc_word;
|
|
|
|
/* Check for status request */
|
|
if (host->status_request)
|
|
return get_dev_status(host) & 0xFF;
|
|
|
|
/* Get column for 16-bit access */
|
|
col = host->col_addr >> 1;
|
|
|
|
/* If we are accessing the spare region */
|
|
if (host->spare_only)
|
|
nfc_word.word = readw(&spare_buf[col]);
|
|
else
|
|
nfc_word.word = readw(&main_buf[col]);
|
|
|
|
/* Pick upper/lower byte of word from RAM buffer */
|
|
ret = nfc_word.bytes[host->col_addr & 0x1];
|
|
|
|
/* Update saved column address */
|
|
if (nand_chip->options & NAND_BUSWIDTH_16)
|
|
host->col_addr += 2;
|
|
else
|
|
host->col_addr++;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static uint16_t mxc_nand_read_word(struct mtd_info *mtd)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
uint16_t col, ret;
|
|
uint16_t __iomem *p;
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL3,
|
|
"mxc_nand_read_word(col = %d)\n", host->col_addr);
|
|
|
|
col = host->col_addr;
|
|
/* Adjust saved column address */
|
|
if (col < mtd->writesize && host->spare_only)
|
|
col += mtd->writesize;
|
|
|
|
if (col < mtd->writesize) {
|
|
p = (uint16_t __iomem *)(host->regs->main_area[0] +
|
|
(col >> 1));
|
|
} else {
|
|
p = (uint16_t __iomem *)(host->regs->spare_area[0] +
|
|
((col - mtd->writesize) >> 1));
|
|
}
|
|
|
|
if (col & 1) {
|
|
union {
|
|
uint16_t word;
|
|
uint8_t bytes[2];
|
|
} nfc_word[3];
|
|
|
|
nfc_word[0].word = readw(p);
|
|
nfc_word[1].word = readw(p + 1);
|
|
|
|
nfc_word[2].bytes[0] = nfc_word[0].bytes[1];
|
|
nfc_word[2].bytes[1] = nfc_word[1].bytes[0];
|
|
|
|
ret = nfc_word[2].word;
|
|
} else {
|
|
ret = readw(p);
|
|
}
|
|
|
|
/* Update saved column address */
|
|
host->col_addr = col + 2;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Write data of length len to buffer buf. The data to be
|
|
* written on NAND Flash is first copied to RAMbuffer. After the Data Input
|
|
* Operation by the NFC, the data is written to NAND Flash
|
|
*/
|
|
static void mxc_nand_write_buf(struct mtd_info *mtd,
|
|
const u_char *buf, int len)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
int n, col, i = 0;
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL3,
|
|
"mxc_nand_write_buf(col = %d, len = %d)\n", host->col_addr,
|
|
len);
|
|
|
|
col = host->col_addr;
|
|
|
|
/* Adjust saved column address */
|
|
if (col < mtd->writesize && host->spare_only)
|
|
col += mtd->writesize;
|
|
|
|
n = mtd->writesize + mtd->oobsize - col;
|
|
n = min(len, n);
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL3,
|
|
"%s:%d: col = %d, n = %d\n", __func__, __LINE__, col, n);
|
|
|
|
while (n > 0) {
|
|
void __iomem *p;
|
|
|
|
if (col < mtd->writesize) {
|
|
p = host->regs->main_area[0] + (col & ~3);
|
|
} else {
|
|
p = host->regs->spare_area[0] -
|
|
mtd->writesize + (col & ~3);
|
|
}
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL3, "%s:%d: p = %p\n", __func__,
|
|
__LINE__, p);
|
|
|
|
if (((col | (unsigned long)&buf[i]) & 3) || n < 4) {
|
|
union {
|
|
uint32_t word;
|
|
uint8_t bytes[4];
|
|
} nfc_word;
|
|
|
|
nfc_word.word = readl(p);
|
|
nfc_word.bytes[col & 3] = buf[i++];
|
|
n--;
|
|
col++;
|
|
|
|
writel(nfc_word.word, p);
|
|
} else {
|
|
int m = mtd->writesize - col;
|
|
|
|
if (col >= mtd->writesize)
|
|
m += mtd->oobsize;
|
|
|
|
m = min(n, m) & ~3;
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL3,
|
|
"%s:%d: n = %d, m = %d, i = %d, col = %d\n",
|
|
__func__, __LINE__, n, m, i, col);
|
|
|
|
mxc_nand_memcpy32(p, (uint32_t *)&buf[i], m);
|
|
col += m;
|
|
i += m;
|
|
n -= m;
|
|
}
|
|
}
|
|
/* Update saved column address */
|
|
host->col_addr = col;
|
|
}
|
|
|
|
/*
|
|
* Read the data buffer from the NAND Flash. To read the data from NAND
|
|
* Flash first the data output cycle is initiated by the NFC, which copies
|
|
* the data to RAMbuffer. This data of length len is then copied to buffer buf.
|
|
*/
|
|
static void mxc_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
int n, col, i = 0;
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL3,
|
|
"mxc_nand_read_buf(col = %d, len = %d)\n", host->col_addr, len);
|
|
|
|
col = host->col_addr;
|
|
|
|
/* Adjust saved column address */
|
|
if (col < mtd->writesize && host->spare_only)
|
|
col += mtd->writesize;
|
|
|
|
n = mtd->writesize + mtd->oobsize - col;
|
|
n = min(len, n);
|
|
|
|
while (n > 0) {
|
|
void __iomem *p;
|
|
|
|
if (col < mtd->writesize) {
|
|
p = host->regs->main_area[0] + (col & ~3);
|
|
} else {
|
|
p = host->regs->spare_area[0] -
|
|
mtd->writesize + (col & ~3);
|
|
}
|
|
|
|
if (((col | (int)&buf[i]) & 3) || n < 4) {
|
|
union {
|
|
uint32_t word;
|
|
uint8_t bytes[4];
|
|
} nfc_word;
|
|
|
|
nfc_word.word = readl(p);
|
|
buf[i++] = nfc_word.bytes[col & 3];
|
|
n--;
|
|
col++;
|
|
} else {
|
|
int m = mtd->writesize - col;
|
|
|
|
if (col >= mtd->writesize)
|
|
m += mtd->oobsize;
|
|
|
|
m = min(n, m) & ~3;
|
|
mxc_nand_memcpy32((uint32_t *)&buf[i], p, m);
|
|
|
|
col += m;
|
|
i += m;
|
|
n -= m;
|
|
}
|
|
}
|
|
/* Update saved column address */
|
|
host->col_addr = col;
|
|
}
|
|
|
|
/*
|
|
* Used by the upper layer to verify the data in NAND Flash
|
|
* with the data in the buf.
|
|
*/
|
|
static int mxc_nand_verify_buf(struct mtd_info *mtd,
|
|
const u_char *buf, int len)
|
|
{
|
|
u_char tmp[256];
|
|
uint bsize;
|
|
|
|
while (len) {
|
|
bsize = min(len, 256);
|
|
mxc_nand_read_buf(mtd, tmp, bsize);
|
|
|
|
if (memcmp(buf, tmp, bsize))
|
|
return 1;
|
|
|
|
buf += bsize;
|
|
len -= bsize;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function is used by upper layer for select and
|
|
* deselect of the NAND chip
|
|
*/
|
|
static void mxc_nand_select_chip(struct mtd_info *mtd, int chip)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
|
|
switch (chip) {
|
|
case -1:
|
|
/* TODO: Disable the NFC clock */
|
|
if (host->clk_act)
|
|
host->clk_act = 0;
|
|
break;
|
|
case 0:
|
|
/* TODO: Enable the NFC clock */
|
|
if (!host->clk_act)
|
|
host->clk_act = 1;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Used by the upper layer to write command to NAND Flash for
|
|
* different operations to be carried out on NAND Flash
|
|
*/
|
|
void mxc_nand_command(struct mtd_info *mtd, unsigned command,
|
|
int column, int page_addr)
|
|
{
|
|
struct nand_chip *nand_chip = mtd->priv;
|
|
struct mxc_nand_host *host = nand_chip->priv;
|
|
|
|
MTDDEBUG(MTD_DEBUG_LEVEL3,
|
|
"mxc_nand_command (cmd = 0x%x, col = 0x%x, page = 0x%x)\n",
|
|
command, column, page_addr);
|
|
|
|
/* Reset command state information */
|
|
host->status_request = false;
|
|
|
|
/* Command pre-processing step */
|
|
switch (command) {
|
|
|
|
case NAND_CMD_STATUS:
|
|
host->col_addr = 0;
|
|
host->status_request = true;
|
|
break;
|
|
|
|
case NAND_CMD_READ0:
|
|
host->page_addr = page_addr;
|
|
host->col_addr = column;
|
|
host->spare_only = false;
|
|
break;
|
|
|
|
case NAND_CMD_READOOB:
|
|
host->col_addr = column;
|
|
host->spare_only = true;
|
|
if (host->pagesize_2k)
|
|
command = NAND_CMD_READ0; /* only READ0 is valid */
|
|
break;
|
|
|
|
case NAND_CMD_SEQIN:
|
|
if (column >= mtd->writesize) {
|
|
/*
|
|
* before sending SEQIN command for partial write,
|
|
* we need read one page out. FSL NFC does not support
|
|
* partial write. It alway send out 512+ecc+512+ecc ...
|
|
* for large page nand flash. But for small page nand
|
|
* flash, it does support SPARE ONLY operation.
|
|
*/
|
|
if (host->pagesize_2k) {
|
|
/* call ourself to read a page */
|
|
mxc_nand_command(mtd, NAND_CMD_READ0, 0,
|
|
page_addr);
|
|
}
|
|
|
|
host->col_addr = column - mtd->writesize;
|
|
host->spare_only = true;
|
|
|
|
/* Set program pointer to spare region */
|
|
if (!host->pagesize_2k)
|
|
send_cmd(host, NAND_CMD_READOOB);
|
|
} else {
|
|
host->spare_only = false;
|
|
host->col_addr = column;
|
|
|
|
/* Set program pointer to page start */
|
|
if (!host->pagesize_2k)
|
|
send_cmd(host, NAND_CMD_READ0);
|
|
}
|
|
break;
|
|
|
|
case NAND_CMD_PAGEPROG:
|
|
send_prog_page(host, 0, host->spare_only);
|
|
|
|
if (host->pagesize_2k && !is_mxc_nfc_11()) {
|
|
/* data in 4 areas datas */
|
|
send_prog_page(host, 1, host->spare_only);
|
|
send_prog_page(host, 2, host->spare_only);
|
|
send_prog_page(host, 3, host->spare_only);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
/* Write out the command to the device. */
|
|
send_cmd(host, command);
|
|
|
|
/* Write out column address, if necessary */
|
|
if (column != -1) {
|
|
/*
|
|
* MXC NANDFC can only perform full page+spare or
|
|
* spare-only read/write. When the upper layers
|
|
* layers perform a read/write buf operation,
|
|
* we will used the saved column adress to index into
|
|
* the full page.
|
|
*/
|
|
send_addr(host, 0);
|
|
if (host->pagesize_2k)
|
|
/* another col addr cycle for 2k page */
|
|
send_addr(host, 0);
|
|
}
|
|
|
|
/* Write out page address, if necessary */
|
|
if (page_addr != -1) {
|
|
u32 page_mask = nand_chip->pagemask;
|
|
do {
|
|
send_addr(host, page_addr & 0xFF);
|
|
page_addr >>= 8;
|
|
page_mask >>= 8;
|
|
} while (page_mask);
|
|
}
|
|
|
|
/* Command post-processing step */
|
|
switch (command) {
|
|
|
|
case NAND_CMD_RESET:
|
|
break;
|
|
|
|
case NAND_CMD_READOOB:
|
|
case NAND_CMD_READ0:
|
|
if (host->pagesize_2k) {
|
|
/* send read confirm command */
|
|
send_cmd(host, NAND_CMD_READSTART);
|
|
/* read for each AREA */
|
|
send_read_page(host, 0, host->spare_only);
|
|
if (!is_mxc_nfc_11()) {
|
|
send_read_page(host, 1, host->spare_only);
|
|
send_read_page(host, 2, host->spare_only);
|
|
send_read_page(host, 3, host->spare_only);
|
|
}
|
|
} else {
|
|
send_read_page(host, 0, host->spare_only);
|
|
}
|
|
break;
|
|
|
|
case NAND_CMD_READID:
|
|
host->col_addr = 0;
|
|
send_read_id(host);
|
|
break;
|
|
|
|
case NAND_CMD_PAGEPROG:
|
|
break;
|
|
|
|
case NAND_CMD_STATUS:
|
|
break;
|
|
|
|
case NAND_CMD_ERASE2:
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifdef MXC_NFC_V1_1
|
|
static void mxc_setup_config1(void)
|
|
{
|
|
uint16_t tmp;
|
|
|
|
tmp = readw(&host->regs->nfc_config1);
|
|
tmp |= NFC_ONE_CYCLE;
|
|
tmp |= NFC_4_8N_ECC;
|
|
writew(tmp, &host->regs->nfc_config1);
|
|
if (host->pagesize_2k)
|
|
writew(64/2, &host->regs->nfc_spare_area_size);
|
|
else
|
|
writew(16/2, &host->regs->nfc_spare_area_size);
|
|
}
|
|
#else
|
|
#define mxc_setup_config1()
|
|
#endif
|
|
|
|
int board_nand_init(struct nand_chip *this)
|
|
{
|
|
struct mtd_info *mtd;
|
|
uint16_t tmp;
|
|
int err = 0;
|
|
|
|
/* structures must be linked */
|
|
mtd = &host->mtd;
|
|
mtd->priv = this;
|
|
host->nand = this;
|
|
|
|
/* 5 us command delay time */
|
|
this->chip_delay = 5;
|
|
|
|
this->priv = host;
|
|
this->dev_ready = mxc_nand_dev_ready;
|
|
this->cmdfunc = mxc_nand_command;
|
|
this->select_chip = mxc_nand_select_chip;
|
|
this->read_byte = mxc_nand_read_byte;
|
|
this->read_word = mxc_nand_read_word;
|
|
this->write_buf = mxc_nand_write_buf;
|
|
this->read_buf = mxc_nand_read_buf;
|
|
this->verify_buf = mxc_nand_verify_buf;
|
|
|
|
host->regs = (struct nfc_regs __iomem *)CONFIG_MXC_NAND_REGS_BASE;
|
|
host->clk_act = 1;
|
|
|
|
#ifdef CONFIG_MXC_NAND_HWECC
|
|
this->ecc.calculate = mxc_nand_calculate_ecc;
|
|
this->ecc.hwctl = mxc_nand_enable_hwecc;
|
|
this->ecc.correct = mxc_nand_correct_data;
|
|
if (is_mxc_nfc_11()) {
|
|
this->ecc.mode = NAND_ECC_HW_SYNDROME;
|
|
this->ecc.read_page = mxc_nand_read_page_syndrome;
|
|
this->ecc.read_page_raw = mxc_nand_read_page_raw_syndrome;
|
|
this->ecc.read_oob = mxc_nand_read_oob_syndrome;
|
|
this->ecc.write_page = mxc_nand_write_page_syndrome;
|
|
this->ecc.write_page_raw = mxc_nand_write_page_raw_syndrome;
|
|
this->ecc.write_oob = mxc_nand_write_oob_syndrome;
|
|
this->ecc.bytes = 9;
|
|
this->ecc.prepad = 7;
|
|
} else {
|
|
this->ecc.mode = NAND_ECC_HW;
|
|
}
|
|
|
|
host->pagesize_2k = 0;
|
|
|
|
this->ecc.size = 512;
|
|
tmp = readw(&host->regs->nfc_config1);
|
|
tmp |= NFC_ECC_EN;
|
|
writew(tmp, &host->regs->nfc_config1);
|
|
#else
|
|
this->ecc.layout = &nand_soft_eccoob;
|
|
this->ecc.mode = NAND_ECC_SOFT;
|
|
tmp = readw(&host->regs->nfc_config1);
|
|
tmp &= ~NFC_ECC_EN;
|
|
writew(tmp, &host->regs->nfc_config1);
|
|
#endif
|
|
/* Reset NAND */
|
|
this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
|
|
|
|
/*
|
|
* preset operation
|
|
* Unlock the internal RAM Buffer
|
|
*/
|
|
writew(0x2, &host->regs->nfc_config);
|
|
|
|
/* Blocks to be unlocked */
|
|
writew(0x0, &host->regs->nfc_unlockstart_blkaddr);
|
|
writew(0x4000, &host->regs->nfc_unlockend_blkaddr);
|
|
|
|
/* Unlock Block Command for given address range */
|
|
writew(0x4, &host->regs->nfc_wrprot);
|
|
|
|
/* NAND bus width determines access funtions used by upper layer */
|
|
if (is_16bit_nand())
|
|
this->options |= NAND_BUSWIDTH_16;
|
|
|
|
#ifdef CONFIG_SYS_NAND_LARGEPAGE
|
|
host->pagesize_2k = 1;
|
|
this->ecc.layout = &nand_hw_eccoob2k;
|
|
#else
|
|
host->pagesize_2k = 0;
|
|
this->ecc.layout = &nand_hw_eccoob;
|
|
#endif
|
|
mxc_setup_config1();
|
|
return err;
|
|
}
|