*/
#include <common.h>
-#include <asm/arch/hardware.h>
+#include <asm/gpio.h>
#include <asm/arch/gpio.h>
-#include <asm/arch/at91_pio.h>
+#include <malloc.h>
#include <nand.h>
#include <watchdog.h>
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;
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;
}
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;
}
*(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 */
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]);
}
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 {
}
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;
}
}
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;
}
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
+
static int atmel_pmecc_nand_init_params(struct nand_chip *nand,
struct mtd_info *mtd)
{
nand->ecc.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 (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;
MTDDEBUG(MTD_DEBUG_LEVEL1,
"Initialize PMECC params, cap: %d, sector: %d\n",
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(
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,
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 */
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->ecc.read_page = atmel_nand_pmecc_read_page;
nand->ecc.write_page = atmel_nand_pmecc_write_page;
nand->ecc.strength = cap;
/* 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;
}
/* 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);
/* 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;
}
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;
}
#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
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
#ifdef CONFIG_SYS_NAND_READY_PIN
nand->dev_ready = at91_nand_ready;
#endif
- nand->chip_delay = 20;
+ nand->chip_delay = 75;
ret = nand_scan_ident(mtd, CONFIG_SYS_NAND_MAX_CHIPS, NULL);
if (ret)
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);
}
projects / karo-tx-uboot.git / blobdiff