Commit ce85b79f authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by David Woodhouse

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: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 453281a9
...@@ -107,6 +107,7 @@ static char *gravepages = NULL; ...@@ -107,6 +107,7 @@ static char *gravepages = NULL;
static unsigned int rptwear = 0; static unsigned int rptwear = 0;
static unsigned int overridesize = 0; static unsigned int overridesize = 0;
static char *cache_file = NULL; static char *cache_file = NULL;
static unsigned int bbt;
module_param(first_id_byte, uint, 0400); module_param(first_id_byte, uint, 0400);
module_param(second_id_byte, uint, 0400); module_param(second_id_byte, uint, 0400);
...@@ -130,6 +131,7 @@ module_param(gravepages, charp, 0400); ...@@ -130,6 +131,7 @@ module_param(gravepages, charp, 0400);
module_param(rptwear, uint, 0400); module_param(rptwear, uint, 0400);
module_param(overridesize, uint, 0400); module_param(overridesize, uint, 0400);
module_param(cache_file, charp, 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(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)"); 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 ...@@ -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" "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"); " 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(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 */ /* The largest possible page size */
#define NS_LARGEST_PAGE_SIZE 4096 #define NS_LARGEST_PAGE_SIZE 4096
...@@ -2264,6 +2267,18 @@ static int __init ns_init_module(void) ...@@ -2264,6 +2267,18 @@ static int __init ns_init_module(void)
/* and 'badblocks' parameters to work */ /* and 'badblocks' parameters to work */
chip->options |= NAND_SKIP_BBTSCAN; 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 * Perform minimum nandsim structure initialization to handle
* the initial ID read command correctly * the initial ID read command correctly
...@@ -2321,10 +2336,10 @@ static int __init ns_init_module(void) ...@@ -2321,10 +2336,10 @@ static int __init ns_init_module(void)
if ((retval = init_nandsim(nsmtd)) != 0) if ((retval = init_nandsim(nsmtd)) != 0)
goto err_exit; goto err_exit;
if ((retval = parse_badblocks(nand, nsmtd)) != 0) if ((retval = nand_default_bbt(nsmtd)) != 0)
goto err_exit; goto err_exit;
if ((retval = nand_default_bbt(nsmtd)) != 0) if ((retval = parse_badblocks(nand, nsmtd)) != 0)
goto err_exit; goto err_exit;
/* Register NAND partitions */ /* Register NAND partitions */
......
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