Flex-OneNAND support

PATCH Superseded Rohit Hagargundgi 1 participant 1 message Dec 9, 2008

Subsystems (3)

Memory technology devices (MTD) NAND flash Onenand flash driver

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Rohit Hagargundgi

author

2008-12-09 13:53 UTC #0 lore raw

PATCH 1/1 Flex-OneNAND support

Hi,
This is a repost of the Flex-OneNAND devices support. Changes since the last post:
- Fix bug which caused 2X program in OneNAND to fail.
- Fix bug with eraseregions containing odd number of blocks.
- Add routine to check blocks are erased before changing boundary.
Thanks,
Rohit

---
 drivers/mtd/onenand/Kconfig        |   62 +++
 drivers/mtd/onenand/onenand_base.c |  829 ++++++++++++++++++++++++++++++++----
 drivers/mtd/onenand/onenand_bbt.c  |   13 +-
 drivers/mtd/onenand/onenand_sim.c  |   76 +++-
 include/linux/mtd/onenand.h        |   41 ++
 include/linux/mtd/onenand_regs.h   |   20 +-
 6 files changed, 950 insertions(+), 91 deletions(-)

drivers/mtd/onenand/Kconfig +62 -0

index 79fa79e..0c8fa54 100644
@@ -71,4 +71,66 @@ config MTD_ONENAND_SIM
 	  The simulator may simulate various OneNAND flash chips for the
 	  OneNAND MTD layer.
 
+config MTD_FLEXONENAND_BOUNDARY
+	bool "Flex-OneNAND Boundary Configuration"
+	depends on MTD_ONENAND
+	default n
+	help
+	  Set SLC and MLC regions of Flex-OneNAND
+
+config MTD_FLEXONENAND_DIE0_BOUNDARY
+	int "Last SLC Block of Flex-OneNAND (min = 0, max = 1023)"
+	depends on MTD_ONENAND && MTD_FLEXONENAND_BOUNDARY
+	default "-1"
+	help
+	  Configure Partition Information (PI) of Flex-OneNAND
+
+	  Entered value indicates index of last SLC block on Flex-OneNAND.
+	  The remaining blocks are configured as MLC blocks.
+
+	  A value of -1 means that PI remains unchanged.
+
+	  This setting applies to :
+		- SDP Flex-OneNAND
+		- Die 1 of DDP Flex-OneNAND.
+
+config MTD_FLEXONENAND_DIE0_ISLOCKED
+	bool "Lock Boundary of Flex-OneNAND"
+	depends on MTD_ONENAND && MTD_FLEXONENAND_BOUNDARY
+	default n
+	help
+	  Configure if Flex-OneNAND boundary should be locked.
+	  Once locked, the boundary cannot be changed.
+
+	  This setting applies to :
+		- SDP Flex-OneNAND
+		- Die 1 of DDP Flex-OneNAND
+
+config MTD_FLEXONENAND_DDP_BOUNDARY
+	bool "Flex-OneNAND DDP Boundary Configuration"
+	depends on MTD_ONENAND && MTD_FLEXONENAND_BOUNDARY
+	default n
+	help
+	  Set SLC and MLC regions of Die 2 of Flex-OneNAND DDP
+
+config MTD_FLEXONENAND_DIE1_BOUNDARY
+	int "Last SLC Block of Flex-OneNAND Die 2 (min = 0, max = 1023)"
+	depends on MTD_ONENAND && MTD_FLEXONENAND_BOUNDARY && MTD_FLEXONENAND_DDP_BOUNDARY
+	default "-1"
+	help
+	  Configure Partition Information (PI) for Die 2 of DDP Flex-OneNAND.
+
+	  Entered value indicates index of last SLC block on Flex-OneNAND.
+	  The remaining blocks are configured as MLC blocks.
+
+	  A value of -1 means that PI remains unchanged.
+
+config MTD_FLEXONENAND_DIE1_ISLOCKED
+	bool "Lock Boundary of Flex-OneNAND Die 2"
+	depends on MTD_ONENAND && MTD_FLEXONENAND_BOUNDARY && MTD_FLEXONENAND_DDP_BOUNDARY
+	default n
+	help
+	  Configure if boundary for Die 2 of DDP Flex-OneNAND should be locked.
+	  Once locked, the boundary cannot be changed.
+
 endif # MTD_ONENAND

drivers/mtd/onenand/onenand_base.c +750 ~~-79~~

1,226 lines not on this page · raw message

drivers/mtd/onenand/onenand_bbt.c +9 -4

index 2f53b51..20fc070 100644
@@ -60,6 +60,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 	struct bbm_info *bbm = this->bbm;
 	int i, j, numblocks, len, scanlen;
 	int startblock;
+	unsigned slc = 0;
 	loff_t from;
 	size_t readlen, ooblen;
 	struct mtd_oob_ops ops;

@@ -76,7 +77,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 	/* Note that numblocks is 2 * (real numblocks) here;
 	 * see i += 2 below as it makses shifting and masking less painful
 	 */
-	numblocks = mtd->size >> (bbm->bbt_erase_shift - 1);
+	numblocks = this->chipsize >> (bbm->bbt_erase_shift - 1);
 	startblock = 0;
 	from = 0;

@@ -106,7 +107,11 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 			}
 		}
 		i += 2;
-		from += (1 << bbm->bbt_erase_shift);
+		onenand_get_block(this, from, &slc);
+		if (slc)
+			from += (1 << bbm->bbt_erase_shift) >> 1;
+		else
+			from += (1 << bbm->bbt_erase_shift);
 	}
 
 	return 0;

@@ -143,7 +148,7 @@ static int onenand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt)
 	uint8_t res;
 
 	/* Get block number * 2 */
-	block = (int) (offs >> (bbm->bbt_erase_shift - 1));
+	block = (int) (onenand_get_block(this, offs, NULL) << 1);
 	res = (bbm->bbt[block >> 3] >> (block & 0x06)) & 0x03;
 
 	DEBUG(MTD_DEBUG_LEVEL2, "onenand_isbad_bbt: bbt info for offs 0x%08x: (block %d) 0x%02x\n",

@@ -178,7 +183,7 @@ int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
 	struct bbm_info *bbm = this->bbm;
 	int len, ret = 0;
 
-	len = mtd->size >> (this->erase_shift + 2);
+	len = this->chipsize >> (this->erase_shift + 2);
 	/* Allocate memory (2bit per block) and clear the memory bad block table */
 	bbm->bbt = kzalloc(len, GFP_KERNEL);
 	if (!bbm->bbt) {

drivers/mtd/onenand/onenand_sim.c +70 -6

166 lines not on this page · raw message

include/linux/mtd/onenand.h +41 -0

82 lines not on this page · raw message

include/linux/mtd/onenand_regs.h +18 -2

index 0c6bbe2..86a6bbe 100644
@@ -67,6 +67,9 @@
 /*
  * Device ID Register F001h (R)
  */
+#define DEVICE_IS_FLEXONENAND		(1 << 9)
+#define FLEXONENAND_PI_MASK		(0x3ff)
+#define FLEXONENAND_PI_UNLOCK_SHIFT	(14)
 #define ONENAND_DEVICE_DENSITY_MASK	(0xf)
 #define ONENAND_DEVICE_DENSITY_SHIFT	(4)
 #define ONENAND_DEVICE_IS_DDP		(1 << 3)

@@ -84,6 +87,11 @@
 #define ONENAND_VERSION_PROCESS_SHIFT	(8)
 
 /*
+ * Technology Register F006h (R)
+ */
+#define ONENAND_TECHNOLOGY_IS_MLC	(1 << 0)
+
+/*
  * Start Address 1 F100h (R/W) & Start Address 2 F101h (R/W)
  */
 #define ONENAND_DDP_SHIFT		(15)

@@ -93,7 +101,8 @@
 /*
  * Start Address 8 F107h (R/W)
  */
-#define ONENAND_FPA_MASK		(0x3f)
+/* Note: It's actually 0x3f in case of SLC */
+#define ONENAND_FPA_MASK		(0x7f)
 #define ONENAND_FPA_SHIFT		(2)
 #define ONENAND_FSA_MASK		(0x03)

@@ -105,7 +114,8 @@
 #define ONENAND_BSA_BOOTRAM		(0 << 2)
 #define ONENAND_BSA_DATARAM0		(2 << 2)
 #define ONENAND_BSA_DATARAM1		(3 << 2)
-#define ONENAND_BSC_MASK		(0x03)
+/* Note: It's actually 0x03 in case of SLC */
+#define ONENAND_BSC_MASK		(0x07)
 
 /*
  * Command Register F220h (R/W)

@@ -124,9 +134,13 @@
 #define ONENAND_CMD_RESET		(0xF0)
 #define ONENAND_CMD_OTP_ACCESS		(0x65)
 #define ONENAND_CMD_READID		(0x90)
+#define FLEXONENAND_CMD_PI_UPDATE	(0x05)
+#define FLEXONENAND_CMD_PI_ACCESS	(0x66)
+#define FLEXONENAND_CMD_RECOVER_LSB	(0x05)
 
 /* NOTE: Those are not *REAL* commands */
 #define ONENAND_CMD_BUFFERRAM		(0x1978)
+#define FLEXONENAND_CMD_READ_PI		(0x1985)
 
 /*
  * System Configuration 1 Register F221h (R, R/W)

@@ -192,10 +206,12 @@
 #define ONENAND_ECC_1BIT_ALL		(0x5555)
 #define ONENAND_ECC_2BIT		(1 << 1)
 #define ONENAND_ECC_2BIT_ALL		(0xAAAA)
+#define FLEXONENAND_UNCORRECTABLE_ERROR	(0x1010)
 
 /*
  * One-Time Programmable (OTP)
  */
+#define FLEXONENAND_OTP_LOCK_OFFSET		(2048)
 #define ONENAND_OTP_LOCK_OFFSET		(14)
 
 #endif	/* __ONENAND_REG_H */

Signature · 1 line

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