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mtd: move & update nand_ecclayout structure (plus board changes)

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nand_ecclayout is present in mtd.h at Linux.
Move this structure to mtd.h to comply with Linux.

Also, increase the ecc placement locations to 640 to suport device having
writesize/oobsize of 8KB/640B. This means that the maximum oobsize has gone
up to 640 bytes and consequently the maximum ecc placement locations have
also gone up to 640.

Changes from Prabhabkar's version (squashed into one patch to preserve
bisectability):
 - Added _LARGE to MTD_MAX_*_ENTRIES

   This makes the names match current Linux source, and resolves
   a conflict between
   http://patchwork.ozlabs.org/patch/280488/
   and
   http://patchwork.ozlabs.org/patch/284513/

   The former was posted first and is closer to matching Linux, but
   unlike Linux it does not add _LARGE to the names.  The second adds
   _LARGE to one of the names, and depends on it in a subsequent patch
   (http://patchwork.ozlabs.org/patch/284512/).

 - Made max oobfree/eccpos configurable, and used this on tricorder,
   alpr, ASH405, T4160QDS, and T4240QDS (these boards failed to build
   for me without doing so, due to a size increase).

   On tricorder SPL, this saves 2576 bytes (and makes the SPL build
   again) versus the new default of 640 eccpos and 32 oobfree, and
   saves 336 bytes versus the old default of 128 eccpos and 8 oobfree.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
CC: Vipin Kumar <vipin.kumar@st.com>
[scottwood@freescale.com: changes as described above]
Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Thomas Weber <weber@corscience.de>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Cc: Stefan Roese <sr@denx.de>
Cc: York Sun <yorksun@freescale.com>
Cc: Tom Rini <trini@ti.com>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Prabhakar Kushwaha 2013-10-04 13:47:58 +05:30 committed by Scott Wood
parent ed5ac34a33
commit 68ec9c85a9
9 changed files with 53 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
doc/README.nand
View File

@ -104,6 +104,16 @@ Configuration Options:
CONFIG_SYS_MAX_NAND_DEVICE
The maximum number of NAND devices you want to support.
CONFIG_SYS_NAND_MAX_ECCPOS
If specified, overrides the maximum number of ECC bytes
supported. Useful for reducing image size, especially with SPL.
This must be at least 48 if nand_base.c is used.
CONFIG_SYS_NAND_MAX_OOBFREE
If specified, overrides the maximum number of free OOB regions
supported. Useful for reducing image size, especially with SPL.
This must be at least 2 if nand_base.c is used.
CONFIG_SYS_NAND_MAX_CHIPS
The maximum number of NAND chips per device to be supported.

15
drivers/mtd/onenand/onenand_base.c
View File

@ -761,7 +761,8 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf,
uint8_t *oob_buf = this->oob_buf;
free = this->ecclayout->oobfree;
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES_LARGE && free->length;
i++, free++) {
if (readcol >= lastgap)
readcol += free->offset - lastgap;
if (readend >= lastgap)
@ -770,7 +771,8 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf,
}
this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
free = this->ecclayout->oobfree;
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES_LARGE && free->length;
i++, free++) {
int free_end = free->offset + free->length;
if (free->offset < readend && free_end > readcol) {
int st = max_t(int,free->offset,readcol);
@ -1356,7 +1358,8 @@ static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf,
unsigned int i;
free = this->ecclayout->oobfree;
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES_LARGE && free->length;
i++, free++) {
if (writecol >= lastgap)
writecol += free->offset - lastgap;
if (writeend >= lastgap)
@ -1364,7 +1367,8 @@ static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf,
lastgap = free->offset + free->length;
}
free = this->ecclayout->oobfree;
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES_LARGE && free->length;
i++, free++) {
int free_end = free->offset + free->length;
if (free->offset < writeend && free_end > writecol) {
int st = max_t(int,free->offset,writecol);
@ -2750,7 +2754,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
* the out of band area
*/
this->ecclayout->oobavail = 0;
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES &&
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES_LARGE &&
this->ecclayout->oobfree[i].length; i++)
this->ecclayout->oobavail +=
this->ecclayout->oobfree[i].length;

2
include/configs/ASH405.h
View File

@ -143,6 +143,8 @@
#define CONFIG_SYS_NAND_SKIP_BAD_DOT_I 1 /* ".i" read skips bad blocks */
#define CONFIG_SYS_NAND_QUIET 1
#define CONFIG_SYS_NAND_MAX_OOBFREE 2
#define CONFIG_SYS_NAND_MAX_ECCPOS 56
/*-----------------------------------------------------------------------
* PCI stuff

2
include/configs/MPC8572DS.h
View File

@ -322,6 +322,8 @@
#define CONFIG_CMD_NAND 1
#define CONFIG_NAND_FSL_ELBC 1
#define CONFIG_SYS_NAND_BLOCK_SIZE (128 * 1024)
#define CONFIG_SYS_NAND_MAX_OOBFREE 5
#define CONFIG_SYS_NAND_MAX_ECCPOS 56
/* NAND boot: 4K NAND loader config */
#define CONFIG_SYS_NAND_SPL_SIZE 0x1000

2
include/configs/T4240QDS.h
View File

@ -229,6 +229,8 @@ unsigned long get_board_ddr_clk(void);
#define CONFIG_CMD_NAND
#define CONFIG_SYS_NAND_BLOCK_SIZE (128 * 1024)
#define CONFIG_SYS_NAND_MAX_OOBFREE 2
#define CONFIG_SYS_NAND_MAX_ECCPOS 256
#if defined(CONFIG_NAND)
#define CONFIG_SYS_CSPR0_EXT CONFIG_SYS_NAND_CSPR_EXT

2
include/configs/alpr.h
View File

@ -324,6 +324,8 @@
#define CONFIG_SYS_NAND_BASE_LIST { CONFIG_SYS_NAND_BASE + 0, CONFIG_SYS_NAND_BASE + 2, \
CONFIG_SYS_NAND_BASE + 4, CONFIG_SYS_NAND_BASE + 6 }
#define CONFIG_SYS_NAND_QUIET_TEST 1 /* don't warn upon unknown NAND flash */
#define CONFIG_SYS_NAND_MAX_OOBFREE 2
#define CONFIG_SYS_NAND_MAX_ECCPOS 56
/*-----------------------------------------------------------------------
* External Bus Controller (EBC) Setup

2
include/configs/tricorder.h
View File

@ -140,6 +140,8 @@
/* devices */
#define CONFIG_NAND_OMAP_BCH8
#define CONFIG_BCH
#define CONFIG_SYS_NAND_MAX_OOBFREE 2
#define CONFIG_SYS_NAND_MAX_ECCPOS 56
/* commands to include */
#include <config_cmd_default.h>

23
include/linux/mtd/mtd.h
View File

@ -96,6 +96,29 @@ struct mtd_oob_ops {
uint8_t *oobbuf;
};
#ifdef CONFIG_SYS_NAND_MAX_OOBFREE
#define MTD_MAX_OOBFREE_ENTRIES_LARGE CONFIG_SYS_NAND_MAX_OOBFREE
#else
#define MTD_MAX_OOBFREE_ENTRIES_LARGE 32
#endif
#ifdef CONFIG_SYS_NAND_MAX_ECCPOS
#define MTD_MAX_ECCPOS_ENTRIES_LARGE CONFIG_SYS_NAND_MAX_ECCPOS
#else
#define MTD_MAX_ECCPOS_ENTRIES_LARGE 640
#endif
/*
* ECC layout control structure. Exported to userspace for
* diagnosis and to allow creation of raw images
*/
struct nand_ecclayout {
uint32_t eccbytes;
uint32_t eccpos[MTD_MAX_ECCPOS_ENTRIES_LARGE];
uint32_t oobavail;
struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE];
};
struct mtd_info {
u_char type;
u_int32_t flags;

12
include/mtd/mtd-abi.h
View File

@ -155,18 +155,6 @@ struct nand_oobfree {
uint32_t length;
};
#define MTD_MAX_OOBFREE_ENTRIES 8
/*
* ECC layout control structure. Exported to userspace for
* diagnosis and to allow creation of raw images
*/
struct nand_ecclayout {
uint32_t eccbytes;
uint32_t eccpos[128];
uint32_t oobavail;
struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES];
};
/**
* struct mtd_ecc_stats - error correction stats
*