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mtd: nandsim: add module param for BBT handling 

I used this to check the BBT on flash together with a hack in mtdchar in
order to read bad blocks.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Sebastian Andrzej Siewior 2010-09-29 19:43:54 +02:00 committed by David Woodhouse
parent 453281a973
commit ce85b79fe8
1 changed files with 17 additions and 2 deletions
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19
drivers/mtd/nand/nandsim.c
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@ -107,6 +107,7 @@ static char *gravepages = NULL;
static unsigned int rptwear = 0;
static unsigned int overridesize = 0;
static char *cache_file = NULL;
static unsigned int bbt;
module_param(first_id_byte, uint, 0400);
module_param(second_id_byte, uint, 0400);
@ -130,6 +131,7 @@ module_param(gravepages, charp, 0400);
module_param(rptwear, uint, 0400);
module_param(overridesize, uint, 0400);
module_param(cache_file, charp, 0400);
module_param(bbt, uint, 0400);
MODULE_PARM_DESC(first_id_byte, "The first byte returned by NAND Flash 'read ID' command (manufacturer ID)");
MODULE_PARM_DESC(second_id_byte, "The second byte returned by NAND Flash 'read ID' command (chip ID)");
@ -162,6 +164,7 @@ MODULE_PARM_DESC(overridesize, "Specifies the NAND Flash size overriding the I
"The size is specified in erase blocks and as the exponent of a power of two"
" e.g. 5 means a size of 32 erase blocks");
MODULE_PARM_DESC(cache_file, "File to use to cache nand pages instead of memory");
MODULE_PARM_DESC(bbt, "0 OOB, 1 BBT with marker in OOB, 2 BBT with marker in data area");
/* The largest possible page size */
#define NS_LARGEST_PAGE_SIZE 4096
@ -2264,6 +2267,18 @@ static int __init ns_init_module(void)
/* and 'badblocks' parameters to work */
chip->options |= NAND_SKIP_BBTSCAN;
switch (bbt) {
case 2:
chip->options |= NAND_USE_FLASH_BBT_NO_OOB;
case 1:
chip->options |= NAND_USE_FLASH_BBT;
case 0:
break;
default:
NS_ERR("bbt has to be 0..2\n");
retval = -EINVAL;
goto error;
}
/*
* Perform minimum nandsim structure initialization to handle
* the initial ID read command correctly
@ -2321,10 +2336,10 @@ static int __init ns_init_module(void)
if ((retval = init_nandsim(nsmtd)) != 0)
goto err_exit;
if ((retval = parse_badblocks(nand, nsmtd)) != 0)
if ((retval = nand_default_bbt(nsmtd)) != 0)
goto err_exit;
if ((retval = nand_default_bbt(nsmtd)) != 0)
if ((retval = parse_badblocks(nand, nsmtd)) != 0)
goto err_exit;
/* Register NAND partitions */