diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 247 |
1 files changed, 51 insertions, 196 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 936186f..9a9260c 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -25,168 +25,23 @@ #if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX35) #include <asm/arch/imx-regs.h> #endif +#include <fsl_nfc.h> #define DRIVER_NAME "mxc_nand" -/* - * TODO: Use same register defs here as nand_spl mxc nand driver. - */ -/* - * Register map and bit definitions for the Freescale NAND Flash Controller - * present in various i.MX devices. - * - * MX31 and MX27 have version 1 which has - * 4 512 byte main buffers and - * 4 16 byte spare buffers - * to support up to 2K byte pagesize nand. - * Reading or writing a 2K page requires 4 FDI/FDO cycles. - * - * MX25 has version 1.1 which has - * 8 512 byte main buffers and - * 8 64 byte spare buffers - * to support up to 4K byte pagesize nand. - * Reading or writing a 2K or 4K page requires only 1 FDI/FDO cycle. - * Also some of registers are moved and/or changed meaning as seen below. - */ -#if defined(CONFIG_MX31) || defined(CONFIG_MX27) -#define MXC_NFC_V1 -#elif defined(CONFIG_MX25) || defined(CONFIG_MX35) -#define MXC_NFC_V1_1 -#else -#warning "MXC NFC version not defined" -#endif - -#if defined(MXC_NFC_V1) -#define NAND_MXC_NR_BUFS 4 -#define NAND_MXC_SPARE_BUF_SIZE 16 -#define NAND_MXC_REG_OFFSET 0xe00 -#define is_mxc_nfc_11() 0 -#elif defined(MXC_NFC_V1_1) -#define NAND_MXC_NR_BUFS 8 -#define NAND_MXC_SPARE_BUF_SIZE 64 -#define NAND_MXC_REG_OFFSET 0x1e00 -#define is_mxc_nfc_11() 1 -#else -#error "define CONFIG_NAND_MXC_VXXX to use mtd mxc nand driver" -#endif -struct nfc_regs { - uint8_t main_area[NAND_MXC_NR_BUFS][0x200]; - uint8_t spare_area[NAND_MXC_NR_BUFS][NAND_MXC_SPARE_BUF_SIZE]; - /* - * reserved size is offset of nfc registers - * minus total main and spare sizes - */ - uint8_t reserved1[NAND_MXC_REG_OFFSET - - NAND_MXC_NR_BUFS * (512 + NAND_MXC_SPARE_BUF_SIZE)]; -#if defined(MXC_NFC_V1) - uint16_t nfc_buf_size; - uint16_t reserved2; - uint16_t nfc_buf_addr; - uint16_t nfc_flash_addr; - uint16_t nfc_flash_cmd; - uint16_t nfc_config; - uint16_t nfc_ecc_status_result; - uint16_t nfc_rsltmain_area; - uint16_t nfc_rsltspare_area; - uint16_t nfc_wrprot; - uint16_t nfc_unlockstart_blkaddr; - uint16_t nfc_unlockend_blkaddr; - uint16_t nfc_nf_wrprst; - uint16_t nfc_config1; - uint16_t nfc_config2; -#elif defined(MXC_NFC_V1_1) - uint16_t reserved2[2]; - uint16_t nfc_buf_addr; - uint16_t nfc_flash_addr; - uint16_t nfc_flash_cmd; - uint16_t nfc_config; - uint16_t nfc_ecc_status_result; - uint16_t nfc_ecc_status_result2; - uint16_t nfc_spare_area_size; - uint16_t nfc_wrprot; - uint16_t reserved3[2]; - uint16_t nfc_nf_wrprst; - uint16_t nfc_config1; - uint16_t nfc_config2; - uint16_t reserved4; - uint16_t nfc_unlockstart_blkaddr; - uint16_t nfc_unlockend_blkaddr; - uint16_t nfc_unlockstart_blkaddr1; - uint16_t nfc_unlockend_blkaddr1; - uint16_t nfc_unlockstart_blkaddr2; - uint16_t nfc_unlockend_blkaddr2; - uint16_t nfc_unlockstart_blkaddr3; - uint16_t nfc_unlockend_blkaddr3; -#endif -}; - -/* - * Set INT to 0, FCMD to 1, rest to 0 in NFC_CONFIG2 Register - * for Command operation - */ -#define NFC_CMD 0x1 - -/* - * Set INT to 0, FADD to 1, rest to 0 in NFC_CONFIG2 Register - * for Address operation - */ -#define NFC_ADDR 0x2 - -/* - * Set INT to 0, FDI to 1, rest to 0 in NFC_CONFIG2 Register - * for Input operation - */ -#define NFC_INPUT 0x4 - -/* - * Set INT to 0, FDO to 001, rest to 0 in NFC_CONFIG2 Register - * for Data Output operation - */ -#define NFC_OUTPUT 0x8 - -/* - * Set INT to 0, FD0 to 010, rest to 0 in NFC_CONFIG2 Register - * for Read ID operation - */ -#define NFC_ID 0x10 - -/* - * Set INT to 0, FDO to 100, rest to 0 in NFC_CONFIG2 Register - * for Read Status operation - */ -#define NFC_STATUS 0x20 - -/* - * Set INT to 1, rest to 0 in NFC_CONFIG2 Register for Read - * Status operation - */ -#define NFC_INT 0x8000 - -#ifdef MXC_NFC_V1_1 -#define NFC_4_8N_ECC (1 << 0) -#else -#define NFC_4_8N_ECC 0 -#endif -#define NFC_SP_EN (1 << 2) -#define NFC_ECC_EN (1 << 3) -#define NFC_BIG (1 << 5) -#define NFC_RST (1 << 6) -#define NFC_CE (1 << 7) -#define NFC_ONE_CYCLE (1 << 8) - typedef enum {false, true} bool; struct mxc_nand_host { - struct mtd_info mtd; - struct nand_chip *nand; - - struct nfc_regs __iomem *regs; - int spare_only; - int status_request; - int pagesize_2k; - int clk_act; - uint16_t col_addr; - unsigned int page_addr; + struct mtd_info mtd; + struct nand_chip *nand; + + struct fsl_nfc_regs __iomem *regs; + int spare_only; + int status_request; + int pagesize_2k; + int clk_act; + uint16_t col_addr; + unsigned int page_addr; }; static struct mxc_nand_host mxc_host; @@ -304,10 +159,10 @@ static void wait_op_done(struct mxc_nand_host *host, int max_retries, uint32_t tmp; while (max_retries-- > 0) { - if (readw(&host->regs->nfc_config2) & NFC_INT) { - tmp = readw(&host->regs->nfc_config2); + if (readw(&host->regs->config2) & NFC_INT) { + tmp = readw(&host->regs->config2); tmp &= ~NFC_INT; - writew(tmp, &host->regs->nfc_config2); + writew(tmp, &host->regs->config2); break; } udelay(1); @@ -326,8 +181,8 @@ static void send_cmd(struct mxc_nand_host *host, uint16_t cmd) { MTDDEBUG(MTD_DEBUG_LEVEL3, "send_cmd(host, 0x%x)\n", cmd); - writew(cmd, &host->regs->nfc_flash_cmd); - writew(NFC_CMD, &host->regs->nfc_config2); + writew(cmd, &host->regs->flash_cmd); + writew(NFC_CMD, &host->regs->config2); /* Wait for operation to complete */ wait_op_done(host, TROP_US_DELAY, cmd); @@ -342,8 +197,8 @@ static void send_addr(struct mxc_nand_host *host, uint16_t addr) { MTDDEBUG(MTD_DEBUG_LEVEL3, "send_addr(host, 0x%x)\n", addr); - writew(addr, &host->regs->nfc_flash_addr); - writew(NFC_ADDR, &host->regs->nfc_config2); + writew(addr, &host->regs->flash_addr); + writew(NFC_ADDR, &host->regs->config2); /* Wait for operation to complete */ wait_op_done(host, TROP_US_DELAY, addr); @@ -375,19 +230,19 @@ static void send_prog_page(struct mxc_nand_host *host, uint8_t buf_id, } } - writew(buf_id, &host->regs->nfc_buf_addr); + writew(buf_id, &host->regs->buf_addr); /* Configure spare or page+spare access */ if (!host->pagesize_2k) { - uint16_t config1 = readw(&host->regs->nfc_config1); + uint16_t config1 = readw(&host->regs->config1); if (spare_only) config1 |= NFC_SP_EN; else config1 &= ~(NFC_SP_EN); - writew(config1, &host->regs->nfc_config1); + writew(config1, &host->regs->config1); } - writew(NFC_INPUT, &host->regs->nfc_config2); + writew(NFC_INPUT, &host->regs->config2); /* Wait for operation to complete */ wait_op_done(host, TROP_US_DELAY, spare_only); @@ -402,19 +257,19 @@ static void send_read_page(struct mxc_nand_host *host, uint8_t buf_id, { MTDDEBUG(MTD_DEBUG_LEVEL3, "send_read_page (%d)\n", spare_only); - writew(buf_id, &host->regs->nfc_buf_addr); + writew(buf_id, &host->regs->buf_addr); /* Configure spare or page+spare access */ if (!host->pagesize_2k) { - uint32_t config1 = readw(&host->regs->nfc_config1); + uint32_t config1 = readw(&host->regs->config1); if (spare_only) config1 |= NFC_SP_EN; else config1 &= ~NFC_SP_EN; - writew(config1, &host->regs->nfc_config1); + writew(config1, &host->regs->config1); } - writew(NFC_OUTPUT, &host->regs->nfc_config2); + writew(NFC_OUTPUT, &host->regs->config2); /* Wait for operation to complete */ wait_op_done(host, TROP_US_DELAY, spare_only); @@ -442,14 +297,14 @@ static void send_read_id(struct mxc_nand_host *host) uint16_t tmp; /* NANDFC buffer 0 is used for device ID output */ - writew(0x0, &host->regs->nfc_buf_addr); + writew(0x0, &host->regs->buf_addr); /* Read ID into main buffer */ - tmp = readw(&host->regs->nfc_config1); + tmp = readw(&host->regs->config1); tmp &= ~NFC_SP_EN; - writew(tmp, &host->regs->nfc_config1); + writew(tmp, &host->regs->config1); - writew(NFC_ID, &host->regs->nfc_config2); + writew(NFC_ID, &host->regs->config2); /* Wait for operation to complete */ wait_op_done(host, TROP_US_DELAY, 0); @@ -469,14 +324,14 @@ static uint16_t get_dev_status(struct mxc_nand_host *host) /* store the main area1 first word, later do recovery */ store = readl(main_buf); /* NANDFC buffer 1 is used for device status */ - writew(1, &host->regs->nfc_buf_addr); + writew(1, &host->regs->buf_addr); /* Read status into main buffer */ - tmp = readw(&host->regs->nfc_config1); + tmp = readw(&host->regs->config1); tmp &= ~NFC_SP_EN; - writew(tmp, &host->regs->nfc_config1); + writew(tmp, &host->regs->config1); - writew(NFC_STATUS, &host->regs->nfc_config2); + writew(NFC_STATUS, &host->regs->config2); /* Wait for operation to complete */ wait_op_done(host, TROP_US_DELAY, 0); @@ -515,13 +370,13 @@ 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); + uint16_t tmp = readw(&host->regs->config1); if (on) tmp |= NFC_ECC_EN; else tmp &= ~NFC_ECC_EN; - writew(tmp, &host->regs->nfc_config1); + writew(tmp, &host->regs->config1); } static int mxc_nand_read_oob_syndrome(struct mtd_info *mtd, @@ -799,7 +654,7 @@ static int mxc_nand_correct_data(struct mtd_info *mtd, u_char *dat, { 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); + uint16_t ecc_status = readw(&host->regs->ecc_status_result); int subpages = mtd->writesize / nand_chip->subpagesize; int pg2blk_shift = nand_chip->phys_erase_shift - nand_chip->page_shift; @@ -845,7 +700,7 @@ static int mxc_nand_correct_data(struct mtd_info *mtd, u_char *dat, * 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); + uint16_t ecc_status = readw(&host->regs->ecc_status_result); if (((ecc_status & 0x3) == 2) || ((ecc_status >> 2) == 2)) { MTDDEBUG(MTD_DEBUG_LEVEL0, @@ -1289,14 +1144,14 @@ static void mxc_setup_config1(void) { uint16_t tmp; - tmp = readw(&host->regs->nfc_config1); + tmp = readw(&host->regs->config1); tmp |= NFC_ONE_CYCLE; tmp |= NFC_4_8N_ECC; - writew(tmp, &host->regs->nfc_config1); + writew(tmp, &host->regs->config1); if (host->pagesize_2k) - writew(64/2, &host->regs->nfc_spare_area_size); + writew(64/2, &host->regs->spare_area_size); else - writew(16/2, &host->regs->nfc_spare_area_size); + writew(16/2, &host->regs->spare_area_size); } #else #define mxc_setup_config1() @@ -1359,7 +1214,7 @@ int board_nand_init(struct nand_chip *this) 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->regs = (struct fsl_nfc_regs __iomem *)CONFIG_MXC_NAND_REGS_BASE; host->clk_act = 1; #ifdef CONFIG_MXC_NAND_HWECC @@ -1383,15 +1238,15 @@ int board_nand_init(struct nand_chip *this) host->pagesize_2k = 0; this->ecc.size = 512; - tmp = readw(&host->regs->nfc_config1); + tmp = readw(&host->regs->config1); tmp |= NFC_ECC_EN; - writew(tmp, &host->regs->nfc_config1); + writew(tmp, &host->regs->config1); #else this->ecc.layout = &nand_soft_eccoob; this->ecc.mode = NAND_ECC_SOFT; - tmp = readw(&host->regs->nfc_config1); + tmp = readw(&host->regs->config1); tmp &= ~NFC_ECC_EN; - writew(tmp, &host->regs->nfc_config1); + writew(tmp, &host->regs->config1); #endif /* Reset NAND */ this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); @@ -1400,10 +1255,10 @@ int board_nand_init(struct nand_chip *this) * preset operation * Unlock the internal RAM Buffer */ - writew(0x2, &host->regs->nfc_config); + writew(0x2, &host->regs->config); /* Blocks to be unlocked */ - writew(0x0, &host->regs->nfc_unlockstart_blkaddr); + writew(0x0, &host->regs->unlockstart_blkaddr); /* Originally (Freescale LTIB 2.6.21) 0x4000 was written to the * unlockend_blkaddr, but the magic 0x4000 does not always work * when writing more than some 32 megabytes (on 2k page nands) @@ -1415,10 +1270,10 @@ int board_nand_init(struct nand_chip *this) * This might be NAND chip specific and the i.MX31 datasheet is * extremely vague about the semantics of this register. */ - writew(0xFFFF, &host->regs->nfc_unlockend_blkaddr); + writew(0xFFFF, &host->regs->unlockend_blkaddr); /* Unlock Block Command for given address range */ - writew(0x4, &host->regs->nfc_wrprot); + writew(0x4, &host->regs->wrprot); /* NAND bus width determines access functions used by upper layer */ if (is_16bit_nand()) |