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authorAkinobu Mita <akinobu.mita@gmail.com>2014-10-23 08:41:44 +0900
committerBrian Norris <computersforpeace@gmail.com>2014-10-23 00:36:18 -0700
commitb00358a5632bdfc5048fdee04b548ebf8ca1c79c (patch)
tree823bf2c752375c5849c486ac441e85e4c4286d03 /drivers/mtd
parentd4efafcc040dcc91b09fd393756e4ee4ad7bf9f2 (diff)
downloadop-kernel-dev-b00358a5632bdfc5048fdee04b548ebf8ca1c79c.zip
op-kernel-dev-b00358a5632bdfc5048fdee04b548ebf8ca1c79c.tar.gz
nandsim: add id_bytes module parameter
nandsim can simulate NAND Flash which returns the ID bytes specified by first_id_byte, ..., fourth_id_byte module parameters. In order to simulate NAND flash which returns more than four ID bytes, this adds id_bytes module parameter which is specified by the array of byte like this: # modprobe nandsim id_bytes=0x98,0xdc,0x90,0x26,0x76,0x15,0x01,0x08 bch=1 This doesn't add fifth_id_byte, ..., seventh_id_byte module parameters, because they are redundant. But the existing first_id_byte, ..., fourth_id_byte module parameters are preserved and add "(obsolete)" to the description. Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Brian Norris <computersforpeace@gmail.com> Cc: linux-mtd@lists.infradead.org Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/nandsim.c42
1 files changed, 24 insertions, 18 deletions
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index 7dc1dd2..ab5bbf5 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -87,10 +87,6 @@
#define CONFIG_NANDSIM_MAX_PARTS 32
#endif
-static uint first_id_byte = CONFIG_NANDSIM_FIRST_ID_BYTE;
-static uint second_id_byte = CONFIG_NANDSIM_SECOND_ID_BYTE;
-static uint third_id_byte = CONFIG_NANDSIM_THIRD_ID_BYTE;
-static uint fourth_id_byte = CONFIG_NANDSIM_FOURTH_ID_BYTE;
static uint access_delay = CONFIG_NANDSIM_ACCESS_DELAY;
static uint programm_delay = CONFIG_NANDSIM_PROGRAMM_DELAY;
static uint erase_delay = CONFIG_NANDSIM_ERASE_DELAY;
@@ -111,11 +107,19 @@ static unsigned int overridesize = 0;
static char *cache_file = NULL;
static unsigned int bbt;
static unsigned int bch;
+static u_char id_bytes[8] = {
+ [0] = CONFIG_NANDSIM_FIRST_ID_BYTE,
+ [1] = CONFIG_NANDSIM_SECOND_ID_BYTE,
+ [2] = CONFIG_NANDSIM_THIRD_ID_BYTE,
+ [3] = CONFIG_NANDSIM_FOURTH_ID_BYTE,
+ [4 ... 7] = 0xFF,
+};
-module_param(first_id_byte, uint, 0400);
-module_param(second_id_byte, uint, 0400);
-module_param(third_id_byte, uint, 0400);
-module_param(fourth_id_byte, uint, 0400);
+module_param_array(id_bytes, byte, NULL, 0400);
+module_param_named(first_id_byte, id_bytes[0], byte, 0400);
+module_param_named(second_id_byte, id_bytes[1], byte, 0400);
+module_param_named(third_id_byte, id_bytes[2], byte, 0400);
+module_param_named(fourth_id_byte, id_bytes[3], byte, 0400);
module_param(access_delay, uint, 0400);
module_param(programm_delay, uint, 0400);
module_param(erase_delay, uint, 0400);
@@ -136,10 +140,11 @@ module_param(cache_file, charp, 0400);
module_param(bbt, uint, 0400);
module_param(bch, 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)");
-MODULE_PARM_DESC(third_id_byte, "The third byte returned by NAND Flash 'read ID' command");
-MODULE_PARM_DESC(fourth_id_byte, "The fourth byte returned by NAND Flash 'read ID' command");
+MODULE_PARM_DESC(id_bytes, "The ID bytes returned by NAND Flash 'read ID' command");
+MODULE_PARM_DESC(first_id_byte, "The first byte returned by NAND Flash 'read ID' command (manufacturer ID) (obsolete)");
+MODULE_PARM_DESC(second_id_byte, "The second byte returned by NAND Flash 'read ID' command (chip ID) (obsolete)");
+MODULE_PARM_DESC(third_id_byte, "The third byte returned by NAND Flash 'read ID' command (obsolete)");
+MODULE_PARM_DESC(fourth_id_byte, "The fourth byte returned by NAND Flash 'read ID' command (obsolete)");
MODULE_PARM_DESC(access_delay, "Initial page access delay (microseconds)");
MODULE_PARM_DESC(programm_delay, "Page programm delay (microseconds");
MODULE_PARM_DESC(erase_delay, "Sector erase delay (milliseconds)");
@@ -304,7 +309,7 @@ struct nandsim {
unsigned int nbparts;
uint busw; /* flash chip bus width (8 or 16) */
- u_char ids[4]; /* chip's ID bytes */
+ u_char ids[8]; /* chip's ID bytes */
uint32_t options; /* chip's characteristic bits */
uint32_t state; /* current chip state */
uint32_t nxstate; /* next expected state */
@@ -2279,17 +2284,18 @@ static int __init ns_init_module(void)
* Perform minimum nandsim structure initialization to handle
* the initial ID read command correctly
*/
- if (third_id_byte != 0xFF || fourth_id_byte != 0xFF)
+ if (id_bytes[6] != 0xFF || id_bytes[7] != 0xFF)
+ nand->geom.idbytes = 8;
+ else if (id_bytes[4] != 0xFF || id_bytes[5] != 0xFF)
+ nand->geom.idbytes = 6;
+ else if (id_bytes[2] != 0xFF || id_bytes[3] != 0xFF)
nand->geom.idbytes = 4;
else
nand->geom.idbytes = 2;
nand->regs.status = NS_STATUS_OK(nand);
nand->nxstate = STATE_UNKNOWN;
nand->options |= OPT_PAGE512; /* temporary value */
- nand->ids[0] = first_id_byte;
- nand->ids[1] = second_id_byte;
- nand->ids[2] = third_id_byte;
- nand->ids[3] = fourth_id_byte;
+ memcpy(nand->ids, id_bytes, sizeof(nand->ids));
if (bus_width == 16) {
nand->busw = 16;
chip->options |= NAND_BUSWIDTH_16;
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