* http://www.linux-mtd.infradead.org/tech/nand.html
*
* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
- * 2002 Thomas Gleixner (tglx@linutronix.de)
+ * 2002 Thomas Gleixner (tglx@linutronix.de)
*
* 02-08-2004 tglx: support for strange chips, which cannot auto increment
* pages on read / read_oob
.oobfree = { {2, 38} }
};
-/* This is used for padding purposes in nand_write_oob */
-static u_char ffchars[] = {
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+static struct nand_oobinfo nand_oob_128 = {
+ .useecc = MTD_NANDECC_AUTOPLACE,
+ .eccbytes = 48,
+ .eccpos = {
+ 80, 81, 82, 83, 84, 85, 86, 87,
+ 88, 89, 90, 91, 92, 93, 94, 95,
+ 96, 97, 98, 99, 100, 101, 102, 103,
+ 104, 105, 106, 107, 108, 109, 110, 111,
+ 112, 113, 114, 115, 116, 117, 118, 119,
+ 120, 121, 122, 123, 124, 125, 126, 127},
+ .oobfree = { {2, 78} }
};
+/* This is used for padding purposes in nand_write_oob */
+static u_char *ffchars;
+
/*
* NAND low-level MTD interface functions
*/
{
struct nand_chip *this = mtd->priv;
this->select_chip(mtd, -1); /* De-select the NAND device */
+ if (ffchars) {
+ kfree(ffchars);
+ ffchars = NULL;
+ }
}
#endif
unsigned long timeo;
if (state == FL_ERASING)
- timeo = (CFG_HZ * 400) / 1000;
+ timeo = (CFG_HZ * 400) / 1000;
else
timeo = (CFG_HZ * 20) / 1000;
* nand_write_page - [GENERIC] write one page
* @mtd: MTD device structure
* @this: NAND chip structure
- * @page: startpage inside the chip, must be called with (page & this->pagemask)
+ * @page: startpage inside the chip, must be called with (page & this->pagemask)
* @oob_buf: out of band data buffer
* @oobsel: out of band selecttion structre
* @cached: 1 = enable cached programming if supported by chip
static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page,
u_char *oob_buf, struct nand_oobinfo *oobsel, int cached)
{
- int i, status;
- u_char ecc_code[32];
+ int i, status;
+ u_char ecc_code[NAND_MAX_OOBSIZE];
int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
- uint *oob_config = oobsel->eccpos;
+ uint *oob_config = oobsel->eccpos;
int datidx = 0, eccidx = 0, eccsteps = this->eccsteps;
int eccbytes = 0;
for (i = 0; i < eccbytes; i++, eccidx++)
oob_buf[oob_config[eccidx]] = ecc_code[i];
/* If the hardware ecc provides syndromes then
- * the ecc code must be written immidiately after
+ * the ecc code must be written immediately after
* the data bytes (words) */
if (this->options & NAND_HWECC_SYNDROME)
this->write_buf(mtd, ecc_code, eccbytes);
* nand_verify_pages - [GENERIC] verify the chip contents after a write
* @mtd: MTD device structure
* @this: NAND chip structure
- * @page: startpage inside the chip, must be called with (page & this->pagemask)
+ * @page: startpage inside the chip, must be called with (page & this->pagemask)
* @numpages: number of pages to verify
* @oob_buf: out of band data buffer
* @oobsel: out of band selecttion structre
static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode)
{
- int i, j, datidx = 0, oobofs = 0, res = -EIO;
+ int i, j, datidx = 0, oobofs = 0, res = -EIO;
int eccsteps = this->eccsteps;
int hweccbytes;
- u_char oobdata[64];
+ u_char oobdata[64];
hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0;
int idx = oobsel->eccpos[i];
if (oobdata[idx] != oob_buf[oobofs + idx] ) {
DEBUG (MTD_DEBUG_LEVEL0,
- "%s: Failed ECC write "
+ "%s: Failed ECC write "
"verify, page 0x%08x, " "%6i bytes were succesful\n", __FUNCTION__, page, i);
goto out;
}
int read = 0, oob = 0, ecc_status = 0, ecc_failed = 0;
struct nand_chip *this = mtd->priv;
u_char *data_poi, *oob_data = oob_buf;
- u_char ecc_calc[32];
- u_char ecc_code[32];
+ u_char ecc_calc[NAND_MAX_OOBSIZE];
+ u_char ecc_code[NAND_MAX_OOBSIZE];
int eccmode, eccsteps;
unsigned *oob_config;
int datidx;
for (i = 0, j = 0; j < mtd->oobavail; i++) {
int from = oobsel->oobfree[i][0];
int num = oobsel->oobfree[i][1];
- memcpy(&oob_buf[oob], &oob_data[from], num);
+ memcpy(&oob_buf[oob+j], &oob_data[from], num);
j+= num;
}
oob += mtd->oobavail;
this->select_chip(mtd, chipnr);
/* Check, if it is write protected */
- if (nand_check_wp(mtd))
+ if (nand_check_wp(mtd)) {
+ printk (KERN_NOTICE "nand_write_ecc: Device is write protected\n");
goto out;
+ }
/* if oobsel is NULL, use chip defaults */
if (oobsel == NULL)
/* Verify the remaining pages */
cmp:
this->data_poi = bufstart;
- ret = nand_verify_pages (mtd, this, startpage, totalpages,
+ ret = nand_verify_pages (mtd, this, startpage, totalpages,
oobbuf, oobsel, chipnr, (eccbuf != NULL));
if (!ret)
*retlen = written;
if (NAND_MUST_PAD(this)) {
/* Write out desired data */
this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask);
+ if (!ffchars) {
+ if (!(ffchars = kmalloc (mtd->oobsize, GFP_KERNEL))) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: "
+ "No memory for padding array, need %d bytes", mtd->oobsize);
+ ret = -ENOMEM;
+ goto out;
+ }
+ memset(ffchars, 0xff, mtd->oobsize);
+ }
/* prepad 0xff for partial programming */
this->write_buf(mtd, ffchars, column);
/* write data */
case 64:
this->autooob = &nand_oob_64;
break;
+ case 128:
+ this->autooob = &nand_oob_128;
+ break;
default:
printk (KERN_WARNING "No oob scheme defined for oobsize %d\n",
mtd->oobsize);
/* The number of bytes available for the filesystem to place fs dependend
* oob data */
- if (this->options & NAND_BUSWIDTH_16) {
- mtd->oobavail = mtd->oobsize - (this->autooob->eccbytes + 2);
- if (this->autooob->eccbytes & 0x01)
- mtd->oobavail--;
- } else
- mtd->oobavail = mtd->oobsize - (this->autooob->eccbytes + 1);
+ mtd->oobavail = 0;
+ for (i=0; this->autooob->oobfree[i][1]; i++)
+ mtd->oobavail += this->autooob->oobfree[i][1];
/*
* check ECC mode, default to software