X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=drivers%2Fmtd%2Fnand%2Fatmel_nand.c;h=0d4f327ed71e2196b01e88eeaab1486f7ae0229f;hp=3bfbaf8ac9fc192297b3653f6254ef74143023ee;hb=4ac34aa16e84b992e6a4794692801f673535bf0e;hpb=eecf9e2e78c3af4304740804b3649f3d4b8a922a diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 3bfbaf8ac9..0d4f327ed7 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -8,32 +8,17 @@ * Add Programmable Multibit ECC support for various AT91 SoC * (C) Copyright 2012 ATMEL, Hong Xu * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include -#include +#include #include -#include +#include #include #include +#include #ifdef CONFIG_ATMEL_NAND_HWECC @@ -47,6 +32,10 @@ #ifdef CONFIG_ATMEL_NAND_HW_PMECC +#ifdef CONFIG_SPL_BUILD +#undef CONFIG_SYS_NAND_ONFI_DETECTION +#endif + struct atmel_nand_host { struct pmecc_regs __iomem *pmecc; struct pmecc_errloc_regs __iomem *pmerrloc; @@ -55,6 +44,7 @@ struct atmel_nand_host { u8 pmecc_corr_cap; u16 pmecc_sector_size; u32 pmecc_index_table_offset; + u32 pmecc_version; int pmecc_bytes_per_sector; int pmecc_sector_number; @@ -66,13 +56,13 @@ struct atmel_nand_host { void __iomem *pmecc_index_of; /* data for pmecc computation */ - int16_t pmecc_smu[(CONFIG_PMECC_CAP + 2) * (2 * CONFIG_PMECC_CAP + 1)]; - int16_t pmecc_partial_syn[2 * CONFIG_PMECC_CAP + 1]; - int16_t pmecc_si[2 * CONFIG_PMECC_CAP + 1]; - int16_t pmecc_lmu[CONFIG_PMECC_CAP + 1]; /* polynomal order */ - int pmecc_mu[CONFIG_PMECC_CAP + 1]; - int pmecc_dmu[CONFIG_PMECC_CAP + 1]; - int pmecc_delta[CONFIG_PMECC_CAP + 1]; + int16_t *pmecc_smu; + int16_t *pmecc_partial_syn; + int16_t *pmecc_si; + int16_t *pmecc_lmu; /* polynomal order */ + int *pmecc_mu; + int *pmecc_dmu; + int *pmecc_delta; }; static struct atmel_nand_host pmecc_host; @@ -125,6 +115,48 @@ static void __iomem *pmecc_get_alpha_to(struct atmel_nand_host *host) table_size * sizeof(int16_t); } +static void pmecc_data_free(struct atmel_nand_host *host) +{ + free(host->pmecc_partial_syn); + free(host->pmecc_si); + free(host->pmecc_lmu); + free(host->pmecc_smu); + free(host->pmecc_mu); + free(host->pmecc_dmu); + free(host->pmecc_delta); +} + +static int pmecc_data_alloc(struct atmel_nand_host *host) +{ + const int cap = host->pmecc_corr_cap; + int size; + + size = (2 * cap + 1) * sizeof(int16_t); + host->pmecc_partial_syn = malloc(size); + host->pmecc_si = malloc(size); + host->pmecc_lmu = malloc((cap + 1) * sizeof(int16_t)); + host->pmecc_smu = malloc((cap + 2) * size); + + size = (cap + 1) * sizeof(int); + host->pmecc_mu = malloc(size); + host->pmecc_dmu = malloc(size); + host->pmecc_delta = malloc(size); + + if (host->pmecc_partial_syn && + host->pmecc_si && + host->pmecc_lmu && + host->pmecc_smu && + host->pmecc_mu && + host->pmecc_dmu && + host->pmecc_delta) + return 0; + + /* error happened */ + pmecc_data_free(host); + return -ENOMEM; + +} + static void pmecc_gen_syndrome(struct mtd_info *mtd, int sector) { struct nand_chip *nand_chip = mtd->priv; @@ -134,7 +166,7 @@ static void pmecc_gen_syndrome(struct mtd_info *mtd, int sector) /* Fill odd syndromes */ for (i = 0; i < host->pmecc_corr_cap; i++) { - value = readl(&host->pmecc->rem_port[sector].rem[i / 2]); + value = pmecc_readl(host->pmecc, rem_port[sector].rem[i / 2]); if (i & 1) value >>= 16; value &= 0xffff; @@ -362,10 +394,11 @@ static int pmecc_err_location(struct mtd_info *mtd) int16_t *smu = host->pmecc_smu; int timeout = PMECC_MAX_TIMEOUT_US; - writel(PMERRLOC_DISABLE, &host->pmerrloc->eldis); + pmecc_writel(host->pmerrloc, eldis, PMERRLOC_DISABLE); for (i = 0; i <= host->pmecc_lmu[cap + 1] >> 1; i++) { - writel(smu[(cap + 1) * num + i], &host->pmerrloc->sigma[i]); + pmecc_writel(host->pmerrloc, sigma[i], + smu[(cap + 1) * num + i]); err_nbr++; } @@ -373,23 +406,23 @@ static int pmecc_err_location(struct mtd_info *mtd) if (sector_size == 1024) val |= PMERRLOC_ELCFG_SECTOR_1024; - writel(val, &host->pmerrloc->elcfg); - writel(sector_size * 8 + host->pmecc_degree * cap, - &host->pmerrloc->elen); + pmecc_writel(host->pmerrloc, elcfg, val); + pmecc_writel(host->pmerrloc, elen, + sector_size * 8 + host->pmecc_degree * cap); while (--timeout) { - if (readl(&host->pmerrloc->elisr) & PMERRLOC_CALC_DONE) + if (pmecc_readl(host->pmerrloc, elisr) & PMERRLOC_CALC_DONE) break; WATCHDOG_RESET(); udelay(1); } if (!timeout) { - printk(KERN_ERR "atmel_nand : Timeout to calculate PMECC error location\n"); + dev_err(host->dev, "atmel_nand : Timeout to calculate PMECC error location\n"); return -1; } - roots_nbr = (readl(&host->pmerrloc->elisr) & PMERRLOC_ERR_NUM_MASK) + roots_nbr = (pmecc_readl(host->pmerrloc, elisr) & PMERRLOC_ERR_NUM_MASK) >> 8; /* Number of roots == degree of smu hence <= cap */ if (roots_nbr == host->pmecc_lmu[cap + 1] >> 1) @@ -413,7 +446,7 @@ static void pmecc_correct_data(struct mtd_info *mtd, uint8_t *buf, uint8_t *ecc, sector_size = host->pmecc_sector_size; while (err_nbr) { - tmp = readl(&host->pmerrloc->el[i]) - 1; + tmp = pmecc_readl(host->pmerrloc, el[i]) - 1; byte_pos = tmp / 8; bit_pos = tmp % 8; @@ -425,7 +458,7 @@ static void pmecc_correct_data(struct mtd_info *mtd, uint8_t *buf, uint8_t *ecc, *(buf + byte_pos) ^= (1 << bit_pos); pos = sector_num * host->pmecc_sector_size + byte_pos; - printk(KERN_INFO "Bit flip in data area, byte_pos: %d, bit_pos: %d, 0x%02x -> 0x%02x\n", + dev_dbg(host->dev, "Bit flip in data area, byte_pos: %d, bit_pos: %d, 0x%02x -> 0x%02x\n", pos, bit_pos, err_byte, *(buf + byte_pos)); } else { /* Bit flip in OOB area */ @@ -435,7 +468,7 @@ static void pmecc_correct_data(struct mtd_info *mtd, uint8_t *buf, uint8_t *ecc, ecc[tmp] ^= (1 << bit_pos); pos = tmp + nand_chip->ecc.layout->eccpos[0]; - printk(KERN_INFO "Bit flip in OOB, oob_byte_pos: %d, bit_pos: %d, 0x%02x -> 0x%02x\n", + dev_dbg(host->dev, "Bit flip in OOB, oob_byte_pos: %d, bit_pos: %d, 0x%02x -> 0x%02x\n", pos, bit_pos, err_byte, ecc[tmp]); } @@ -454,6 +487,10 @@ static int pmecc_correction(struct mtd_info *mtd, u32 pmecc_stat, uint8_t *buf, int i, err_nbr, eccbytes; uint8_t *buf_pos; + /* SAMA5D4 PMECC IP can correct errors for all 0xff page */ + if (host->pmecc_version >= PMECC_VERSION_SAMA5D4) + goto normal_check; + eccbytes = nand_chip->ecc.bytes; for (i = 0; i < eccbytes; i++) if (ecc[i] != 0xff) @@ -473,7 +510,7 @@ normal_check: err_nbr = pmecc_err_location(mtd); if (err_nbr == -1) { - printk(KERN_ERR "PMECC: Too many errors\n"); + dev_err(host->dev, "PMECC: Too many errors\n"); mtd->ecc_stats.failed++; return -EIO; } else { @@ -517,7 +554,7 @@ static int atmel_nand_pmecc_read_page(struct mtd_info *mtd, } if (!timeout) { - printk(KERN_ERR "atmel_nand : Timeout to read PMECC page\n"); + dev_err(host->dev, "atmel_nand : Timeout to read PMECC page\n"); return -1; } @@ -557,7 +594,7 @@ static int atmel_nand_pmecc_write_page(struct mtd_info *mtd, } if (!timeout) { - printk(KERN_ERR "atmel_nand : Timeout to read PMECC status, fail to write PMECC in oob\n"); + dev_err(host->dev, "atmel_nand : Timeout to read PMECC status, fail to write PMECC in oob\n"); goto out; } @@ -567,7 +604,7 @@ static int atmel_nand_pmecc_write_page(struct mtd_info *mtd, pos = i * host->pmecc_bytes_per_sector + j; chip->oob_poi[eccpos[pos]] = - readb(&host->pmecc->ecc_port[i].ecc[j]); + pmecc_readb(host->pmecc, ecc_port[i].ecc[j]); } } chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); @@ -638,6 +675,155 @@ static void atmel_pmecc_core_init(struct mtd_info *mtd) pmecc_writel(host->pmecc, ctrl, PMECC_CTRL_ENABLE); } +#ifdef CONFIG_SYS_NAND_ONFI_DETECTION +/* + * get_onfi_ecc_param - Get ECC requirement from ONFI parameters + * @ecc_bits: store the ONFI ECC correct bits capbility + * @sector_size: in how many bytes that ONFI require to correct @ecc_bits + * + * Returns -1 if ONFI parameters is not supported. In this case @ecc_bits, + * @sector_size are initialize to 0. + * Return 0 if success to get the ECC requirement. + */ +static int get_onfi_ecc_param(struct nand_chip *chip, + int *ecc_bits, int *sector_size) +{ + *ecc_bits = *sector_size = 0; + + if (chip->onfi_params.ecc_bits == 0xff) + /* TODO: the sector_size and ecc_bits need to be find in + * extended ecc parameter, currently we don't support it. + */ + return -1; + + *ecc_bits = chip->onfi_params.ecc_bits; + + /* The default sector size (ecc codeword size) is 512 */ + *sector_size = 512; + + return 0; +} + +/* + * pmecc_choose_ecc - Get ecc requirement from ONFI parameters. If + * pmecc_corr_cap or pmecc_sector_size is 0, then set it as + * ONFI ECC parameters. + * @host: point to an atmel_nand_host structure. + * if host->pmecc_corr_cap is 0 then set it as the ONFI ecc_bits. + * if host->pmecc_sector_size is 0 then set it as the ONFI sector_size. + * @chip: point to an nand_chip structure. + * @cap: store the ONFI ECC correct bits capbility + * @sector_size: in how many bytes that ONFI require to correct @ecc_bits + * + * Return 0 if success. otherwise return the error code. + */ +static int pmecc_choose_ecc(struct atmel_nand_host *host, + struct nand_chip *chip, + int *cap, int *sector_size) +{ + /* Get ECC requirement from ONFI parameters */ + *cap = *sector_size = 0; + if (chip->onfi_version) { + if (!get_onfi_ecc_param(chip, cap, sector_size)) { + MTDDEBUG(MTD_DEBUG_LEVEL1, "ONFI params, minimum required ECC: %d bits in %d bytes\n", + *cap, *sector_size); + } else { + dev_info(host->dev, "NAND chip ECC reqirement is in Extended ONFI parameter, we don't support yet.\n"); + } + } else { + dev_info(host->dev, "NAND chip is not ONFI compliant, assume ecc_bits is 2 in 512 bytes"); + } + if (*cap == 0 && *sector_size == 0) { + /* Non-ONFI compliant or use extended ONFI parameters */ + *cap = 2; + *sector_size = 512; + } + + /* If head file doesn't specify then use the one in ONFI parameters */ + if (host->pmecc_corr_cap == 0) { + /* use the most fitable ecc bits (the near bigger one ) */ + if (*cap <= 2) + host->pmecc_corr_cap = 2; + else if (*cap <= 4) + host->pmecc_corr_cap = 4; + else if (*cap <= 8) + host->pmecc_corr_cap = 8; + else if (*cap <= 12) + host->pmecc_corr_cap = 12; + else if (*cap <= 24) + host->pmecc_corr_cap = 24; + else + return -EINVAL; + } + if (host->pmecc_sector_size == 0) { + /* use the most fitable sector size (the near smaller one ) */ + if (*sector_size >= 1024) + host->pmecc_sector_size = 1024; + else if (*sector_size >= 512) + host->pmecc_sector_size = 512; + else + return -EINVAL; + } + return 0; +} +#endif + +#if defined(NO_GALOIS_TABLE_IN_ROM) +static uint16_t *pmecc_galois_table; +static inline int deg(unsigned int poly) +{ + /* polynomial degree is the most-significant bit index */ + return fls(poly) - 1; +} + +static int build_gf_tables(int mm, unsigned int poly, + int16_t *index_of, int16_t *alpha_to) +{ + unsigned int i, x = 1; + const unsigned int k = 1 << deg(poly); + unsigned int nn = (1 << mm) - 1; + + /* primitive polynomial must be of degree m */ + if (k != (1u << mm)) + return -EINVAL; + + for (i = 0; i < nn; i++) { + alpha_to[i] = x; + index_of[x] = i; + if (i && (x == 1)) + /* polynomial is not primitive (a^i=1 with 0ecc.correct = NULL; nand->ecc.hwctl = NULL; - cap = host->pmecc_corr_cap = CONFIG_PMECC_CAP; - sector_size = host->pmecc_sector_size = CONFIG_PMECC_SECTOR_SIZE; - host->pmecc_index_table_offset = CONFIG_PMECC_INDEX_TABLE_OFFSET; +#ifdef CONFIG_SYS_NAND_ONFI_DETECTION + host->pmecc_corr_cap = host->pmecc_sector_size = 0; + +#ifdef CONFIG_PMECC_CAP + host->pmecc_corr_cap = CONFIG_PMECC_CAP; +#endif +#ifdef CONFIG_PMECC_SECTOR_SIZE + host->pmecc_sector_size = CONFIG_PMECC_SECTOR_SIZE; +#endif + /* Get ECC requirement of ONFI parameters. And if CONFIG_PMECC_CAP or + * CONFIG_PMECC_SECTOR_SIZE not defined, then use ecc_bits, sector_size + * from ONFI. + */ + if (pmecc_choose_ecc(host, nand, &cap, §or_size)) { + dev_err(host->dev, "The NAND flash's ECC requirement(ecc_bits: %d, sector_size: %d) are not support!", + cap, sector_size); + return -EINVAL; + } + + if (cap > host->pmecc_corr_cap) + dev_info(host->dev, "WARNING: Using different ecc correct bits(%d bit) from Nand ONFI ECC reqirement (%d bit).\n", + host->pmecc_corr_cap, cap); + if (sector_size < host->pmecc_sector_size) + dev_info(host->dev, "WARNING: Using different ecc correct sector size (%d bytes) from Nand ONFI ECC reqirement (%d bytes).\n", + host->pmecc_sector_size, sector_size); +#else /* CONFIG_SYS_NAND_ONFI_DETECTION */ + host->pmecc_corr_cap = CONFIG_PMECC_CAP; + host->pmecc_sector_size = CONFIG_PMECC_SECTOR_SIZE; +#endif + + cap = host->pmecc_corr_cap; + sector_size = host->pmecc_sector_size; + + /* TODO: need check whether cap & sector_size is validate */ +#if defined(NO_GALOIS_TABLE_IN_ROM) + /* + * As pmecc_rom_base is the begin of the gallois field table, So the + * index offset just set as 0. + */ + host->pmecc_index_table_offset = 0; +#else + if (host->pmecc_sector_size == 512) + host->pmecc_index_table_offset = ATMEL_PMECC_INDEX_OFFSET_512; + else + host->pmecc_index_table_offset = ATMEL_PMECC_INDEX_OFFSET_1024; +#endif MTDDEBUG(MTD_DEBUG_LEVEL1, "Initialize PMECC params, cap: %d, sector: %d\n", @@ -662,7 +891,17 @@ static int atmel_pmecc_nand_init_params(struct nand_chip *nand, host->pmecc = (struct pmecc_regs __iomem *) ATMEL_BASE_PMECC; host->pmerrloc = (struct pmecc_errloc_regs __iomem *) ATMEL_BASE_PMERRLOC; +#if defined(NO_GALOIS_TABLE_IN_ROM) + pmecc_galois_table = create_lookup_table(host->pmecc_sector_size); + if (!pmecc_galois_table) { + dev_err(host->dev, "out of memory\n"); + return -ENOMEM; + } + + host->pmecc_rom_base = (void __iomem *)pmecc_galois_table; +#else host->pmecc_rom_base = (void __iomem *) ATMEL_BASE_ROM; +#endif /* ECC is calculated for the whole page (1 step) */ nand->ecc.size = mtd->writesize; @@ -671,7 +910,9 @@ static int atmel_pmecc_nand_init_params(struct nand_chip *nand, switch (mtd->writesize) { case 2048: case 4096: - host->pmecc_degree = PMECC_GF_DIMENSION_13; + case 8192: + host->pmecc_degree = (sector_size == 512) ? + PMECC_GF_DIMENSION_13 : PMECC_GF_DIMENSION_14; host->pmecc_cw_len = (1 << host->pmecc_degree) - 1; host->pmecc_sector_number = mtd->writesize / sector_size; host->pmecc_bytes_per_sector = pmecc_get_ecc_bytes( @@ -683,8 +924,15 @@ static int atmel_pmecc_nand_init_params(struct nand_chip *nand, nand->ecc.steps = 1; nand->ecc.bytes = host->pmecc_bytes_per_sector * host->pmecc_sector_number; + + if (nand->ecc.bytes > MTD_MAX_ECCPOS_ENTRIES_LARGE) { + dev_err(host->dev, "too large eccpos entries. max support ecc.bytes is %d\n", + MTD_MAX_ECCPOS_ENTRIES_LARGE); + return -EINVAL; + } + if (nand->ecc.bytes > mtd->oobsize - 2) { - printk(KERN_ERR "No room for ECC bytes\n"); + dev_err(host->dev, "No room for ECC bytes\n"); return -EINVAL; } pmecc_config_ecc_layout(&atmel_pmecc_oobinfo, @@ -695,7 +943,7 @@ static int atmel_pmecc_nand_init_params(struct nand_chip *nand, case 512: case 1024: /* TODO */ - printk(KERN_ERR "Unsupported page size for PMECC, use Software ECC\n"); + dev_err(host->dev, "Unsupported page size for PMECC, use Software ECC\n"); default: /* page size not handled by HW ECC */ /* switching back to soft ECC */ @@ -707,10 +955,21 @@ static int atmel_pmecc_nand_init_params(struct nand_chip *nand, return 0; } + /* Allocate data for PMECC computation */ + if (pmecc_data_alloc(host)) { + dev_err(host->dev, "Cannot allocate memory for PMECC computation!\n"); + return -ENOMEM; + } + + nand->options |= NAND_NO_SUBPAGE_WRITE; nand->ecc.read_page = atmel_nand_pmecc_read_page; nand->ecc.write_page = atmel_nand_pmecc_write_page; nand->ecc.strength = cap; + /* Check the PMECC ip version */ + host->pmecc_version = pmecc_readl(host->pmerrloc, version); + dev_dbg(host->dev, "PMECC IP version is: %x\n", host->pmecc_version); + atmel_pmecc_core_init(mtd); return 0; @@ -872,7 +1131,7 @@ static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat, /* it doesn't seems to be a freshly * erased block. * We can't correct so many errors */ - printk(KERN_WARNING "atmel_nand : multiple errors detected." + dev_warn(host->dev, "atmel_nand : multiple errors detected." " Unable to correct.\n"); return -EIO; } @@ -882,12 +1141,12 @@ static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat, /* there's nothing much to do here. * the bit error is on the ECC itself. */ - printk(KERN_WARNING "atmel_nand : one bit error on ECC code." + dev_warn(host->dev, "atmel_nand : one bit error on ECC code." " Nothing to correct\n"); return 0; } - printk(KERN_WARNING "atmel_nand : one bit error on data." + dev_warn(host->dev, "atmel_nand : one bit error on data." " (word offset in the page :" " 0x%x bit offset : 0x%x)\n", ecc_word, ecc_bit); @@ -899,7 +1158,7 @@ static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat, /* 8 bits words */ dat[ecc_word] ^= (1 << ecc_bit); } - printk(KERN_WARNING "atmel_nand : error corrected\n"); + dev_warn(host->dev, "atmel_nand : error corrected\n"); return 1; } @@ -983,8 +1242,7 @@ static void at91_nand_hwcontrol(struct mtd_info *mtd, IO_ADDR_W |= CONFIG_SYS_NAND_MASK_ALE; #ifdef CONFIG_SYS_NAND_ENABLE_PIN - at91_set_gpio_value(CONFIG_SYS_NAND_ENABLE_PIN, - !(ctrl & NAND_NCE)); + gpio_set_value(CONFIG_SYS_NAND_ENABLE_PIN, !(ctrl & NAND_NCE)); #endif this->IO_ADDR_W = (void *) IO_ADDR_W; } @@ -996,10 +1254,247 @@ static void at91_nand_hwcontrol(struct mtd_info *mtd, #ifdef CONFIG_SYS_NAND_READY_PIN static int at91_nand_ready(struct mtd_info *mtd) { - return at91_get_gpio_value(CONFIG_SYS_NAND_READY_PIN); + return gpio_get_value(CONFIG_SYS_NAND_READY_PIN); } #endif +#ifdef CONFIG_SPL_BUILD +/* The following code is for SPL */ +static nand_info_t mtd; +static struct nand_chip nand_chip; + +static int nand_command(int block, int page, uint32_t offs, u8 cmd) +{ + struct nand_chip *this = mtd.priv; + int page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT; + void (*hwctrl)(struct mtd_info *mtd, int cmd, + unsigned int ctrl) = this->cmd_ctrl; + + while (!this->dev_ready(&mtd)) + ; + + if (cmd == NAND_CMD_READOOB) { + offs += CONFIG_SYS_NAND_PAGE_SIZE; + cmd = NAND_CMD_READ0; + } + + hwctrl(&mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE); + + if ((this->options & NAND_BUSWIDTH_16) && !nand_opcode_8bits(cmd)) + offs >>= 1; + + hwctrl(&mtd, offs & 0xff, NAND_CTRL_ALE | NAND_CTRL_CHANGE); + hwctrl(&mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); + hwctrl(&mtd, (page_addr & 0xff), NAND_CTRL_ALE); + hwctrl(&mtd, ((page_addr >> 8) & 0xff), NAND_CTRL_ALE); +#ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE + hwctrl(&mtd, (page_addr >> 16) & 0x0f, NAND_CTRL_ALE); +#endif + hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); + + hwctrl(&mtd, NAND_CMD_READSTART, NAND_CTRL_CLE | NAND_CTRL_CHANGE); + hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); + + while (!this->dev_ready(&mtd)) + ; + + return 0; +} + +static int nand_is_bad_block(int block) +{ + struct nand_chip *this = mtd.priv; + + nand_command(block, 0, CONFIG_SYS_NAND_BAD_BLOCK_POS, NAND_CMD_READOOB); + + if (this->options & NAND_BUSWIDTH_16) { + if (readw(this->IO_ADDR_R) != 0xffff) + return 1; + } else { + if (readb(this->IO_ADDR_R) != 0xff) + return 1; + } + + return 0; +} + +#ifdef CONFIG_SPL_NAND_ECC +static int nand_ecc_pos[] = CONFIG_SYS_NAND_ECCPOS; +#define ECCSTEPS (CONFIG_SYS_NAND_PAGE_SIZE / \ + CONFIG_SYS_NAND_ECCSIZE) +#define ECCTOTAL (ECCSTEPS * CONFIG_SYS_NAND_ECCBYTES) + +static int nand_read_page(int block, int page, void *dst) +{ + struct nand_chip *this = mtd.priv; + u_char ecc_calc[ECCTOTAL]; + u_char ecc_code[ECCTOTAL]; + u_char oob_data[CONFIG_SYS_NAND_OOBSIZE]; + int eccsize = CONFIG_SYS_NAND_ECCSIZE; + int eccbytes = CONFIG_SYS_NAND_ECCBYTES; + int eccsteps = ECCSTEPS; + int i; + uint8_t *p = dst; + nand_command(block, page, 0, NAND_CMD_READ0); + + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { + if (this->ecc.mode != NAND_ECC_SOFT) + this->ecc.hwctl(&mtd, NAND_ECC_READ); + this->read_buf(&mtd, p, eccsize); + this->ecc.calculate(&mtd, p, &ecc_calc[i]); + } + this->read_buf(&mtd, oob_data, CONFIG_SYS_NAND_OOBSIZE); + + for (i = 0; i < ECCTOTAL; i++) + ecc_code[i] = oob_data[nand_ecc_pos[i]]; + + eccsteps = ECCSTEPS; + p = dst; + + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) + this->ecc.correct(&mtd, p, &ecc_code[i], &ecc_calc[i]); + + return 0; +} + +int spl_nand_erase_one(int block, int page) +{ + struct nand_chip *this = mtd.priv; + void (*hwctrl)(struct mtd_info *mtd, int cmd, + unsigned int ctrl) = this->cmd_ctrl; + int page_addr; + + if (nand_chip.select_chip) + nand_chip.select_chip(&mtd, 0); + + page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT; + hwctrl(&mtd, NAND_CMD_ERASE1, NAND_CTRL_CLE | NAND_CTRL_CHANGE); + /* Row address */ + hwctrl(&mtd, (page_addr & 0xff), NAND_CTRL_ALE | NAND_CTRL_CHANGE); + hwctrl(&mtd, ((page_addr >> 8) & 0xff), + NAND_CTRL_ALE | NAND_CTRL_CHANGE); +#ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE + /* One more address cycle for devices > 128MiB */ + hwctrl(&mtd, (page_addr >> 16) & 0x0f, + NAND_CTRL_ALE | NAND_CTRL_CHANGE); +#endif + hwctrl(&mtd, NAND_CMD_ERASE2, NAND_CTRL_CLE | NAND_CTRL_CHANGE); + + while (!this->dev_ready(&mtd)) + ; + + nand_deselect(); + + return 0; +} +#else +static int nand_read_page(int block, int page, void *dst) +{ + struct nand_chip *this = mtd.priv; + + nand_command(block, page, 0, NAND_CMD_READ0); + atmel_nand_pmecc_read_page(&mtd, this, dst, 0, page); + + return 0; +} +#endif /* CONFIG_SPL_NAND_ECC */ + +int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst) +{ + unsigned int block, lastblock; + unsigned int page; + + block = offs / CONFIG_SYS_NAND_BLOCK_SIZE; + lastblock = (offs + size - 1) / CONFIG_SYS_NAND_BLOCK_SIZE; + page = (offs % CONFIG_SYS_NAND_BLOCK_SIZE) / CONFIG_SYS_NAND_PAGE_SIZE; + + while (block <= lastblock) { + if (!nand_is_bad_block(block)) { + while (page < CONFIG_SYS_NAND_PAGE_COUNT) { + nand_read_page(block, page, dst); + dst += CONFIG_SYS_NAND_PAGE_SIZE; + page++; + } + + page = 0; + } else { + lastblock++; + } + + block++; + } + + return 0; +} + +int at91_nand_wait_ready(struct mtd_info *mtd) +{ + struct nand_chip *this = mtd->priv; + + udelay(this->chip_delay); + + return 1; +} + +int board_nand_init(struct nand_chip *nand) +{ + int ret = 0; + + nand->ecc.mode = NAND_ECC_SOFT; +#ifdef CONFIG_SYS_NAND_DBW_16 + nand->options = NAND_BUSWIDTH_16; + nand->read_buf = nand_read_buf16; +#else + nand->read_buf = nand_read_buf; +#endif + nand->cmd_ctrl = at91_nand_hwcontrol; +#ifdef CONFIG_SYS_NAND_READY_PIN + nand->dev_ready = at91_nand_ready; +#else + nand->dev_ready = at91_nand_wait_ready; +#endif + nand->chip_delay = 20; +#ifdef CONFIG_SYS_NAND_USE_FLASH_BBT + nand->bbt_options |= NAND_BBT_USE_FLASH; +#endif + +#ifdef CONFIG_ATMEL_NAND_HWECC +#ifdef CONFIG_ATMEL_NAND_HW_PMECC + ret = atmel_pmecc_nand_init_params(nand, &mtd); +#endif +#endif + + return ret; +} + +void nand_init(void) +{ + mtd.writesize = CONFIG_SYS_NAND_PAGE_SIZE; + mtd.oobsize = CONFIG_SYS_NAND_OOBSIZE; + mtd.priv = &nand_chip; + nand_chip.IO_ADDR_R = (void __iomem *)CONFIG_SYS_NAND_BASE; + nand_chip.IO_ADDR_W = (void __iomem *)CONFIG_SYS_NAND_BASE; + board_nand_init(&nand_chip); + +#ifdef CONFIG_SPL_NAND_ECC + if (nand_chip.ecc.mode == NAND_ECC_SOFT) { + nand_chip.ecc.calculate = nand_calculate_ecc; + nand_chip.ecc.correct = nand_correct_data; + } +#endif + + if (nand_chip.select_chip) + nand_chip.select_chip(&mtd, 0); +} + +void nand_deselect(void) +{ + if (nand_chip.select_chip) + nand_chip.select_chip(&mtd, -1); +} + +#else + #ifndef CONFIG_SYS_NAND_BASE_LIST #define CONFIG_SYS_NAND_BASE_LIST { CONFIG_SYS_NAND_BASE } #endif @@ -1015,7 +1510,11 @@ int atmel_nand_chip_init(int devnum, ulong base_addr) mtd->priv = nand; nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr; +#ifdef CONFIG_NAND_ECC_BCH + nand->ecc.mode = NAND_ECC_SOFT_BCH; +#else nand->ecc.mode = NAND_ECC_SOFT; +#endif #ifdef CONFIG_SYS_NAND_DBW_16 nand->options = NAND_BUSWIDTH_16; #endif @@ -1023,7 +1522,10 @@ int atmel_nand_chip_init(int devnum, ulong base_addr) #ifdef CONFIG_SYS_NAND_READY_PIN nand->dev_ready = at91_nand_ready; #endif - nand->chip_delay = 20; + nand->chip_delay = 75; +#ifdef CONFIG_SYS_NAND_USE_FLASH_BBT + nand->bbt_options |= NAND_BBT_USE_FLASH; +#endif ret = nand_scan_ident(mtd, CONFIG_SYS_NAND_MAX_CHIPS, NULL); if (ret) @@ -1051,6 +1553,7 @@ void board_nand_init(void) int i; for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) if (atmel_nand_chip_init(i, base_addr[i])) - printk(KERN_ERR "atmel_nand: Fail to initialize #%d chip", + dev_err(host->dev, "atmel_nand: Fail to initialize #%d chip", i); } +#endif /* CONFIG_SPL_BUILD */