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NAND: Update to support 64 bit device size

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This patch adds support for NANDs greater than 2 GB.
Patch is based on the MTD NAND driver in the kernel.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
master
Sandeep Paulraj 15 years ago committed by Scott Wood
parent 581d04f14d
commit aaa8eec532
4 changed files with 42 additions and 31 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 22
      drivers/mtd/nand/nand_base.c
  2. 41
      drivers/mtd/nand/nand_bbt.c
  3. 2
      include/linux/mtd/nand.h
  4. 4
      include/linux/mtd/partitions.h

22
drivers/mtd/nand/nand_base.c
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@ -2211,13 +2211,15 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
int allowbbt)
{
int page, len, status, pages_per_block, ret, chipnr;
int page, status, pages_per_block, ret, chipnr;
struct nand_chip *chip = mtd->priv;
int rewrite_bbt[CONFIG_SYS_NAND_MAX_CHIPS]={0};
loff_t rewrite_bbt[CONFIG_SYS_NAND_MAX_CHIPS] = {0};
unsigned int bbt_masked_page = 0xffffffff;
loff_t len;
MTDDEBUG (MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%08x, len = %i\n",
(unsigned int) instr->addr, (unsigned int) instr->len);
MTDDEBUG(MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%012llx, "
"len = %llu\n", (unsigned long long) instr->addr,
(unsigned long long) instr->len);
/* Start address must align on block boundary */
if (instr->addr & ((1 << chip->phys_erase_shift) - 1)) {
@ -2313,7 +2315,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_erase: "
"Failed erase, page 0x%08x\n", page);
instr->state = MTD_ERASE_FAILED;
instr->fail_addr = (page << chip->page_shift);
instr->fail_addr = ((loff_t)page << chip->page_shift);
goto erase_exit;
}
@ -2323,7 +2325,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
*/
if (bbt_masked_page != 0xffffffff &&
(page & BBT_PAGE_MASK) == bbt_masked_page)
rewrite_bbt[chipnr] = (page << chip->page_shift);
rewrite_bbt[chipnr] =
((loff_t)page << chip->page_shift);
/* Increment page address and decrement length */
len -= (1 << chip->phys_erase_shift);
@ -2370,7 +2373,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
continue;
/* update the BBT for chip */
MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt "
"(%d:0x%0x 0x%0x)\n", chipnr, rewrite_bbt[chipnr],
"(%d:0x%0llx 0x%0x)\n", chipnr, rewrite_bbt[chipnr],
chip->bbt_td->pages[chipnr]);
nand_update_bbt(mtd, rewrite_bbt[chipnr]);
}
@ -2566,7 +2569,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
if (!mtd->name)
mtd->name = type->name;
chip->chipsize = type->chipsize << 20;
chip->chipsize = (uint64_t)type->chipsize << 20;
/* Newer devices have all the information in additional id bytes */
if (!type->pagesize) {
@ -2624,7 +2627,10 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
chip->bbt_erase_shift = chip->phys_erase_shift =
ffs(mtd->erasesize) - 1;
if (chip->chipsize & 0xffffffff)
chip->chip_shift = ffs(chip->chipsize) - 1;
else
chip->chip_shift = ffs((unsigned)(chip->chipsize >> 32)) + 31;
/* Set the bad block position */
chip->badblockpos = mtd->writesize > 512 ?

41
drivers/mtd/nand/nand_bbt.c
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@ -182,16 +182,19 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num,
if (tmp == msk)
continue;
if (reserved_block_code && (tmp == reserved_block_code)) {
printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n",
((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%012llx\n",
(loff_t)((offs << 2) +
(act >> 1)) <<
this->bbt_erase_shift);
this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06);
mtd->ecc_stats.bbtblocks++;
continue;
}
/* Leave it for now, if its matured we can move this
* message to MTD_DEBUG_LEVEL0 */
printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n",
((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%012llx\n",
(loff_t)((offs << 2) + (act >> 1)) <<
this->bbt_erase_shift);
/* Factory marked bad or worn out ? */
if (tmp == 0)
this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06);
@ -295,8 +298,8 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
/* Read the primary version, if available */
if (td->options & NAND_BBT_VERSION) {
scan_read_raw(mtd, buf, td->pages[0] << this->page_shift,
mtd->writesize);
scan_read_raw(mtd, buf, (loff_t)td->pages[0] <<
this->page_shift, mtd->writesize);
td->version[0] = buf[mtd->writesize + td->veroffs];
printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
td->pages[0], td->version[0]);
@ -304,8 +307,8 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
/* Read the mirror version, if available */
if (md && (md->options & NAND_BBT_VERSION)) {
scan_read_raw(mtd, buf, md->pages[0] << this->page_shift,
mtd->writesize);
scan_read_raw(mtd, buf, (loff_t)md->pages[0] <<
this->page_shift, mtd->writesize);
md->version[0] = buf[mtd->writesize + md->veroffs];
printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
md->pages[0], md->version[0]);
@ -422,7 +425,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
numblocks = this->chipsize >> (this->bbt_erase_shift - 1);
startblock = chip * numblocks;
numblocks += startblock;
from = startblock << (this->bbt_erase_shift - 1);
from = (loff_t)startblock << (this->bbt_erase_shift - 1);
}
for (i = startblock; i < numblocks;) {
@ -440,8 +443,8 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
if (ret) {
this->bbt[i >> 3] |= 0x03 << (i & 0x6);
MTDDEBUG (MTD_DEBUG_LEVEL0,
"Bad eraseblock %d at 0x%08x\n",
i >> 1, (unsigned int)from);
"Bad eraseblock %d at 0x%012llx\n",
i >> 1, (unsigned long long)from);
mtd->ecc_stats.badblocks++;
}
@ -507,7 +510,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
for (block = 0; block < td->maxblocks; block++) {
int actblock = startblock + dir * block;
loff_t offs = actblock << this->bbt_erase_shift;
loff_t offs = (loff_t)actblock << this->bbt_erase_shift;
/* Read first page */
scan_read_raw(mtd, buf, offs, mtd->writesize);
@ -731,7 +734,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
memset(&einfo, 0, sizeof(einfo));
einfo.mtd = mtd;
einfo.addr = (unsigned long)to;
einfo.addr = to;
einfo.len = 1 << this->bbt_erase_shift;
res = nand_erase_nand(mtd, &einfo, 1);
if (res < 0)
@ -741,8 +744,9 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
if (res < 0)
goto outerr;
printk(KERN_DEBUG "Bad block table written to 0x%08x, version "
"0x%02X\n", (unsigned int)to, td->version[chip]);
printk(KERN_DEBUG "Bad block table written to 0x%012llx, "
"version 0x%02X\n", (unsigned long long)to,
td->version[chip]);
/* Mark it as used */
td->pages[chip] = page;
@ -922,7 +926,8 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
newval = oldval | (0x2 << (block & 0x06));
this->bbt[(block >> 3)] = newval;
if ((oldval != newval) && td->reserved_block_code)
nand_update_bbt(mtd, block << (this->bbt_erase_shift - 1));
nand_update_bbt(mtd, (loff_t)block <<
(this->bbt_erase_shift - 1));
continue;
}
update = 0;
@ -943,7 +948,8 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
new ones have been marked, then we need to update the stored
bbts. This should only happen once. */
if (update && td->reserved_block_code)
nand_update_bbt(mtd, (block - 2) << (this->bbt_erase_shift - 1));
nand_update_bbt(mtd, (loff_t)(block - 2) <<
(this->bbt_erase_shift - 1));
}
}
@ -1039,7 +1045,6 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs)
if (!this->bbt || !td)
return -EINVAL;
len = mtd->size >> (this->bbt_erase_shift + 2);
/* Allocate a temporary buffer for one eraseblock incl. oob */
len = (1 << this->bbt_erase_shift);
len += (len >> this->page_shift) * mtd->oobsize;

2
include/linux/mtd/nand.h
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@ -397,7 +397,7 @@ struct nand_chip {
int bbt_erase_shift;
int chip_shift;
int numchips;
unsigned long chipsize;
uint64_t chipsize;
int pagemask;
int pagebuf;
int subpagesize;

4
include/linux/mtd/partitions.h
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@ -38,8 +38,8 @@
struct mtd_partition {
char *name; /* identifier string */
u_int32_t size; /* partition size */
u_int32_t offset; /* offset within the master MTD space */
uint64_t size; /* partition size */
uint64_t offset; /* offset within the master MTD space */
u_int32_t mask_flags; /* master MTD flags to mask out for this partition */
struct nand_ecclayout *ecclayout; /* out of band layout for this partition (NAND only)*/
struct mtd_info **mtdp; /* pointer to store the MTD object */

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