/*
* linux/drivers/mtd/onenand/onenand_base.c
*
- * Copyright (C) 2005 Samsung Electronics
+ * Copyright (C) 2005-2006 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
+#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/onenand.h>
/**
* onenand_oob_64 - oob info for large (2KB) page
*/
-static struct nand_oobinfo onenand_oob_64 = {
- .useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout onenand_oob_64 = {
.eccbytes = 20,
.eccpos = {
8, 9, 10, 11, 12,
/**
* onenand_oob_32 - oob info for middle (1KB) page
*/
-static struct nand_oobinfo onenand_oob_32 = {
- .useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout onenand_oob_32 = {
.eccbytes = 10,
.eccpos = {
8, 9, 10, 11, 12,
struct onenand_chip *this = mtd->priv;
int value, readcmd = 0, block_cmd = 0;
int block, page;
- /* Now we use page size operation */
- int sectors = 4, count = 4;
/* Address translation */
switch (cmd) {
case ONENAND_CMD_UNLOCK:
case ONENAND_CMD_LOCK:
case ONENAND_CMD_LOCK_TIGHT:
+ case ONENAND_CMD_UNLOCK_ALL:
block = -1;
page = -1;
break;
}
if (page != -1) {
+ /* Now we use page size operation */
+ int sectors = 4, count = 4;
int dataram;
switch (cmd) {
ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS);
if (ctrl & ONENAND_CTRL_ERROR) {
- /* It maybe occur at initial bad block */
DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: controller error = 0x%04x\n", ctrl);
- /* Clear other interrupt bits for preventing ECC error */
- interrupt &= ONENAND_INT_MASTER;
- }
-
- if (ctrl & ONENAND_CTRL_LOCK) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: it's locked error = 0x%04x\n", ctrl);
- return -EACCES;
+ if (ctrl & ONENAND_CTRL_LOCK)
+ DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: it's locked error.\n");
+ return ctrl;
}
if (interrupt & ONENAND_INT_READ) {
ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS);
- if (ecc & ONENAND_ECC_2BIT_ALL) {
+ if (ecc) {
DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: ECC error = 0x%04x\n", ecc);
- return -EBADMSG;
+ if (ecc & ONENAND_ECC_2BIT_ALL)
+ mtd->ecc_stats.failed++;
+ else if (ecc & ONENAND_ECC_1BIT_ALL)
+ mtd->ecc_stats.corrected++;
}
}
return 0;
}
+/*
+ * onenand_interrupt - [DEFAULT] onenand interrupt handler
+ * @param irq onenand interrupt number
+ * @param dev_id interrupt data
+ *
+ * complete the work
+ */
+static irqreturn_t onenand_interrupt(int irq, void *data)
+{
+ struct onenand_chip *this = (struct onenand_chip *) data;
+
+ /* To handle shared interrupt */
+ if (!this->complete.done)
+ complete(&this->complete);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * onenand_interrupt_wait - [DEFAULT] wait until the command is done
+ * @param mtd MTD device structure
+ * @param state state to select the max. timeout value
+ *
+ * Wait for command done.
+ */
+static int onenand_interrupt_wait(struct mtd_info *mtd, int state)
+{
+ struct onenand_chip *this = mtd->priv;
+
+ /* To prevent soft lockup */
+ touch_softlockup_watchdog();
+
+ wait_for_completion(&this->complete);
+
+ return onenand_wait(mtd, state);
+}
+
+/*
+ * onenand_try_interrupt_wait - [DEFAULT] try interrupt wait
+ * @param mtd MTD device structure
+ * @param state state to select the max. timeout value
+ *
+ * Try interrupt based wait (It is used one-time)
+ */
+static int onenand_try_interrupt_wait(struct mtd_info *mtd, int state)
+{
+ struct onenand_chip *this = mtd->priv;
+ unsigned long remain, timeout;
+
+ /* We use interrupt wait first */
+ this->wait = onenand_interrupt_wait;
+
+ /* To prevent soft lockup */
+ touch_softlockup_watchdog();
+
+ timeout = msecs_to_jiffies(100);
+ remain = wait_for_completion_timeout(&this->complete, timeout);
+ if (!remain) {
+ printk(KERN_INFO "OneNAND: There's no interrupt. "
+ "We use the normal wait\n");
+
+ /* Release the irq */
+ free_irq(this->irq, this);
+
+ this->wait = onenand_wait;
+ }
+
+ return onenand_wait(mtd, state);
+}
+
+/*
+ * onenand_setup_wait - [OneNAND Interface] setup onenand wait method
+ * @param mtd MTD device structure
+ *
+ * There's two method to wait onenand work
+ * 1. polling - read interrupt status register
+ * 2. interrupt - use the kernel interrupt method
+ */
+static void onenand_setup_wait(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ int syscfg;
+
+ init_completion(&this->complete);
+
+ if (this->irq <= 0) {
+ this->wait = onenand_wait;
+ return;
+ }
+
+ if (request_irq(this->irq, &onenand_interrupt,
+ IRQF_SHARED, "onenand", this)) {
+ /* If we can't get irq, use the normal wait */
+ this->wait = onenand_wait;
+ return;
+ }
+
+ /* Enable interrupt */
+ syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1);
+ syscfg |= ONENAND_SYS_CFG1_IOBE;
+ this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1);
+
+ this->wait = onenand_try_interrupt_wait;
+}
+
/**
* onenand_bufferram_offset - [DEFAULT] BufferRAM offset
* @param mtd MTD data structure
size_t *retlen, u_char *buf)
{
struct onenand_chip *this = mtd->priv;
+ struct mtd_ecc_stats stats;
int read = 0, column;
int thislen;
int ret = 0;
/* TODO handling oob */
+ stats = mtd->ecc_stats;
while (read < len) {
thislen = min_t(int, mtd->writesize, len - read);
ret = this->wait(mtd, FL_READING);
/* First copy data and check return value for ECC handling */
- onenand_update_bufferram(mtd, from, 1);
+ onenand_update_bufferram(mtd, from, !ret);
}
this->read_bufferram(mtd, ONENAND_DATARAM, buf, column, thislen);
- read += thislen;
-
- if (read == len)
- break;
-
if (ret) {
DEBUG(MTD_DEBUG_LEVEL0, "onenand_read: read failed = %d\n", ret);
goto out;
}
+ read += thislen;
+
+ if (read == len)
+ break;
+
from += thislen;
buf += thislen;
}
* retlen == desired len and result == -EBADMSG
*/
*retlen = read;
- return ret;
+
+ if (mtd->ecc_stats.failed - stats.failed)
+ return -EBADMSG;
+
+ return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0;
}
/**
- * onenand_read_oob - [MTD Interface] OneNAND read out-of-band
+ * onenand_do_read_oob - [MTD Interface] OneNAND read out-of-band
* @param mtd MTD device structure
* @param from offset to read from
* @param len number of bytes to read
*
* OneNAND read out-of-band data from the spare area
*/
-static int onenand_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
+int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf)
{
struct onenand_chip *this = mtd->priv;
int read = 0, thislen, column;
this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen);
+ if (ret) {
+ DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_oob: read failed = 0x%x\n", ret);
+ goto out;
+ }
+
read += thislen;
if (read == len)
break;
- if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_oob: read failed = %d\n", ret);
- goto out;
- }
-
buf += thislen;
/* Read more? */
return ret;
}
+/**
+ * onenand_read_oob - [MTD Interface] NAND write data and/or out-of-band
+ * @mtd: MTD device structure
+ * @from: offset to read from
+ * @ops: oob operation description structure
+ */
+static int onenand_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
+{
+ BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+ return onenand_do_read_oob(mtd, from + ops->ooboffs, ops->ooblen,
+ &ops->oobretlen, ops->oobbuf);
+}
+
#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
/**
* onenand_verify_oob - [GENERIC] verify the oob contents after a write
void __iomem *dataram0, *dataram1;
int ret = 0;
+ /* In partial page write, just skip it */
+ if ((addr & (mtd->writesize - 1)) != 0)
+ return 0;
+
this->command(mtd, ONENAND_CMD_READ, addr, mtd->writesize);
ret = this->wait(mtd, FL_READING);
#define onenand_verify_oob(...) (0)
#endif
-#define NOTALIGNED(x) ((x & (mtd->writesize - 1)) != 0)
+#define NOTALIGNED(x) ((x & (this->subpagesize - 1)) != 0)
/**
* onenand_write - [MTD Interface] write buffer to FLASH
struct onenand_chip *this = mtd->priv;
int written = 0;
int ret = 0;
+ int column, subpage;
DEBUG(MTD_DEBUG_LEVEL3, "onenand_write: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
return -EINVAL;
}
+ column = to & (mtd->writesize - 1);
+ subpage = column || (len & (mtd->writesize - 1));
+
/* Grab the lock and see if the device is available */
onenand_get_device(mtd, FL_WRITING);
/* Loop until all data write */
while (written < len) {
- int thislen = min_t(int, mtd->writesize, len - written);
-
- this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->writesize);
+ int bytes = mtd->writesize;
+ int thislen = min_t(int, bytes, len - written);
+ u_char *wbuf = (u_char *) buf;
+
+ this->command(mtd, ONENAND_CMD_BUFFERRAM, to, bytes);
+
+ /* Partial page write */
+ if (subpage) {
+ bytes = min_t(int, bytes - column, (int) len);
+ memset(this->page_buf, 0xff, mtd->writesize);
+ memcpy(this->page_buf + column, buf, bytes);
+ wbuf = this->page_buf;
+ /* Even though partial write, we need page size */
+ thislen = mtd->writesize;
+ }
- this->write_bufferram(mtd, ONENAND_DATARAM, buf, 0, thislen);
+ this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, thislen);
this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize);
this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize);
- onenand_update_bufferram(mtd, to, 1);
+ /* In partial page write we don't update bufferram */
+ onenand_update_bufferram(mtd, to, !subpage);
ret = this->wait(mtd, FL_WRITING);
if (ret) {
DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: write filaed %d\n", ret);
- goto out;
+ break;
}
- written += thislen;
-
/* Only check verify write turn on */
- ret = onenand_verify_page(mtd, (u_char *) buf, to);
+ ret = onenand_verify_page(mtd, (u_char *) wbuf, to);
if (ret) {
DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: verify failed %d\n", ret);
- goto out;
+ break;
}
+ written += thislen;
+
if (written == len)
break;
+ column = 0;
to += thislen;
buf += thislen;
}
-out:
/* Deselect and wake up anyone waiting on the device */
onenand_release_device(mtd);
}
/**
- * onenand_write_oob - [MTD Interface] OneNAND write out-of-band
+ * onenand_do_write_oob - [Internal] OneNAND write out-of-band
* @param mtd MTD device structure
* @param to offset to write to
* @param len number of bytes to write
*
* OneNAND write out-of-band
*/
-static int onenand_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf)
+static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const u_char *buf)
{
struct onenand_chip *this = mtd->priv;
int column, ret = 0;
return ret;
}
+/**
+ * onenand_write_oob - [MTD Interface] NAND write data and/or out-of-band
+ * @mtd: MTD device structure
+ * @from: offset to read from
+ * @ops: oob operation description structure
+ */
+static int onenand_write_oob(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
+{
+ BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+ return onenand_do_write_oob(mtd, to + ops->ooboffs, ops->ooblen,
+ &ops->oobretlen, ops->oobbuf);
+}
+
/**
* onenand_block_checkbad - [GENERIC] Check if a block is marked bad
* @param mtd MTD device structure
ret = this->wait(mtd, FL_ERASING);
/* Check, if it is write protected */
if (ret) {
- if (ret == -EPERM)
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Device is write protected!!!\n");
- else
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Failed erase, block %d\n", (unsigned) (addr >> this->erase_shift));
+ DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Failed erase, block %d\n", (unsigned) (addr >> this->erase_shift));
instr->state = MTD_ERASE_FAILED;
instr->fail_addr = addr;
goto erase_exit;
onenand_release_device(mtd);
}
-
/**
* onenand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad
* @param mtd MTD device structure
/* We write two bytes, so we dont have to mess with 16 bit access */
ofs += mtd->oobsize + (bbm->badblockpos & ~0x01);
- return mtd->write_oob(mtd, ofs , 2, &retlen, buf);
+ return onenand_do_write_oob(mtd, ofs , 2, &retlen, buf);
}
/**
}
/**
- * onenand_unlock - [MTD Interface] Unlock block(s)
+ * onenand_do_lock_cmd - [OneNAND Interface] Lock or unlock block(s)
* @param mtd MTD device structure
* @param ofs offset relative to mtd start
- * @param len number of bytes to unlock
+ * @param len number of bytes to lock or unlock
*
- * Unlock one or more blocks
+ * Lock or unlock one or more blocks
*/
-static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int cmd)
{
struct onenand_chip *this = mtd->priv;
int start, end, block, value, status;
+ int wp_status_mask;
start = ofs >> this->erase_shift;
end = len >> this->erase_shift;
+ if (cmd == ONENAND_CMD_LOCK)
+ wp_status_mask = ONENAND_WP_LS;
+ else
+ wp_status_mask = ONENAND_WP_US;
+
/* Continuous lock scheme */
- if (this->options & ONENAND_CONT_LOCK) {
+ if (this->options & ONENAND_HAS_CONT_LOCK) {
/* Set start block address */
this->write_word(start, this->base + ONENAND_REG_START_BLOCK_ADDRESS);
/* Set end block address */
- this->write_word(end - 1, this->base + ONENAND_REG_END_BLOCK_ADDRESS);
- /* Write unlock command */
- this->command(mtd, ONENAND_CMD_UNLOCK, 0, 0);
+ this->write_word(start + end - 1, this->base + ONENAND_REG_END_BLOCK_ADDRESS);
+ /* Write lock command */
+ this->command(mtd, cmd, 0, 0);
/* There's no return value */
- this->wait(mtd, FL_UNLOCKING);
+ this->wait(mtd, FL_LOCKING);
/* Sanity check */
while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS)
/* Check lock status */
status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
- if (!(status & ONENAND_WP_US))
+ if (!(status & wp_status_mask))
printk(KERN_ERR "wp status = 0x%x\n", status);
return 0;
}
/* Block lock scheme */
- for (block = start; block < end; block++) {
+ for (block = start; block < start + end; block++) {
/* Set block address */
value = onenand_block_address(this, block);
this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1);
this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
/* Set start block address */
this->write_word(block, this->base + ONENAND_REG_START_BLOCK_ADDRESS);
- /* Write unlock command */
- this->command(mtd, ONENAND_CMD_UNLOCK, 0, 0);
+ /* Write lock command */
+ this->command(mtd, cmd, 0, 0);
/* There's no return value */
- this->wait(mtd, FL_UNLOCKING);
+ this->wait(mtd, FL_LOCKING);
/* Sanity check */
while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS)
& ONENAND_CTRL_ONGO)
continue;
+ /* Check lock status */
+ status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
+ if (!(status & wp_status_mask))
+ printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status);
+ }
+
+ return 0;
+}
+
+/**
+ * onenand_lock - [MTD Interface] Lock block(s)
+ * @param mtd MTD device structure
+ * @param ofs offset relative to mtd start
+ * @param len number of bytes to unlock
+ *
+ * Lock one or more blocks
+ */
+static int onenand_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+ return onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_LOCK);
+}
+
+/**
+ * onenand_unlock - [MTD Interface] Unlock block(s)
+ * @param mtd MTD device structure
+ * @param ofs offset relative to mtd start
+ * @param len number of bytes to unlock
+ *
+ * Unlock one or more blocks
+ */
+static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+ return onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK);
+}
+
+/**
+ * onenand_check_lock_status - [OneNAND Interface] Check lock status
+ * @param this onenand chip data structure
+ *
+ * Check lock status
+ */
+static void onenand_check_lock_status(struct onenand_chip *this)
+{
+ unsigned int value, block, status;
+ unsigned int end;
+
+ end = this->chipsize >> this->erase_shift;
+ for (block = 0; block < end; block++) {
+ /* Set block address */
+ value = onenand_block_address(this, block);
+ this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1);
+ /* Select DataRAM for DDP */
+ value = onenand_bufferram_address(this, block);
+ this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
+ /* Set start block address */
+ this->write_word(block, this->base + ONENAND_REG_START_BLOCK_ADDRESS);
+
/* Check lock status */
status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
if (!(status & ONENAND_WP_US))
printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status);
}
+}
+
+/**
+ * onenand_unlock_all - [OneNAND Interface] unlock all blocks
+ * @param mtd MTD device structure
+ *
+ * Unlock all blocks
+ */
+static int onenand_unlock_all(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+
+ if (this->options & ONENAND_HAS_UNLOCK_ALL) {
+ /* Write unlock command */
+ this->command(mtd, ONENAND_CMD_UNLOCK_ALL, 0, 0);
+
+ /* There's no return value */
+ this->wait(mtd, FL_LOCKING);
+
+ /* Sanity check */
+ while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS)
+ & ONENAND_CTRL_ONGO)
+ continue;
+
+ /* Workaround for all block unlock in DDP */
+ if (this->device_id & ONENAND_DEVICE_IS_DDP) {
+ loff_t ofs;
+ size_t len;
+
+ /* 1st block on another chip */
+ ofs = this->chipsize >> 1;
+ len = 1 << this->erase_shift;
+
+ onenand_unlock(mtd, ofs, len);
+ }
+
+ onenand_check_lock_status(this);
+
+ return 0;
+ }
+
+ onenand_unlock(mtd, 0x0, this->chipsize);
return 0;
}
this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0);
this->wait(mtd, FL_OTPING);
- ret = mtd->write_oob(mtd, from, len, retlen, buf);
+ ret = onenand_do_write_oob(mtd, from, len, retlen, buf);
/* Exit OTP access mode */
this->command(mtd, ONENAND_CMD_RESET, 0, 0);
}
#endif /* CONFIG_MTD_ONENAND_OTP */
+/**
+ * onenand_lock_scheme - Check and set OneNAND lock scheme
+ * @param mtd MTD data structure
+ *
+ * Check and set OneNAND lock scheme
+ */
+static void onenand_lock_scheme(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ unsigned int density, process;
+
+ /* Lock scheme depends on density and process */
+ density = this->device_id >> ONENAND_DEVICE_DENSITY_SHIFT;
+ process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT;
+
+ /* Lock scheme */
+ if (density >= ONENAND_DEVICE_DENSITY_1Gb) {
+ /* A-Die has all block unlock */
+ if (process) {
+ printk(KERN_DEBUG "Chip support all block unlock\n");
+ this->options |= ONENAND_HAS_UNLOCK_ALL;
+ }
+ } else {
+ /* Some OneNAND has continues lock scheme */
+ if (!process) {
+ printk(KERN_DEBUG "Lock scheme is Continues Lock\n");
+ this->options |= ONENAND_HAS_CONT_LOCK;
+ }
+ }
+}
+
/**
* onenand_print_device_info - Print device ID
* @param device device ID
*
* Print device ID
*/
-static void onenand_print_device_info(int device)
+static void onenand_print_device_info(int device, int version)
{
int vcc, demuxed, ddp, density;
(16 << density),
vcc ? "2.65/3.3" : "1.8",
device);
+ printk(KERN_DEBUG "OneNAND version = 0x%04x\n", version);
}
static const struct onenand_manufacturers onenand_manuf_ids[] = {
static int onenand_probe(struct mtd_info *mtd)
{
struct onenand_chip *this = mtd->priv;
- int bram_maf_id, bram_dev_id, maf_id, dev_id;
- int version_id;
+ int bram_maf_id, bram_dev_id, maf_id, dev_id, ver_id;
int density;
+ int syscfg;
+
+ /* Save system configuration 1 */
+ syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1);
+ /* Clear Sync. Burst Read mode to read BootRAM */
+ this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ), this->base + ONENAND_REG_SYS_CFG1);
/* Send the command for reading device ID from BootRAM */
this->write_word(ONENAND_CMD_READID, this->base + ONENAND_BOOTRAM);
bram_maf_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x0);
bram_dev_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x2);
+ /* Reset OneNAND to read default register values */
+ this->write_word(ONENAND_CMD_RESET, this->base + ONENAND_BOOTRAM);
+ /* Wait reset */
+ this->wait(mtd, FL_RESETING);
+
+ /* Restore system configuration 1 */
+ this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1);
+
/* Check manufacturer ID */
if (onenand_check_maf(bram_maf_id))
return -ENXIO;
- /* Reset OneNAND to read default register values */
- this->write_word(ONENAND_CMD_RESET, this->base + ONENAND_BOOTRAM);
-
/* Read manufacturer and device IDs from Register */
maf_id = this->read_word(this->base + ONENAND_REG_MANUFACTURER_ID);
dev_id = this->read_word(this->base + ONENAND_REG_DEVICE_ID);
+ ver_id = this->read_word(this->base + ONENAND_REG_VERSION_ID);
/* Check OneNAND device */
if (maf_id != bram_maf_id || dev_id != bram_dev_id)
return -ENXIO;
/* Flash device information */
- onenand_print_device_info(dev_id);
+ onenand_print_device_info(dev_id, ver_id);
this->device_id = dev_id;
+ this->version_id = ver_id;
density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT;
this->chipsize = (16 << density) << 20;
mtd->size = this->chipsize;
- /* Version ID */
- version_id = this->read_word(this->base + ONENAND_REG_VERSION_ID);
- printk(KERN_DEBUG "OneNAND version = 0x%04x\n", version_id);
-
- /* Lock scheme */
- if (density <= ONENAND_DEVICE_DENSITY_512Mb &&
- !(version_id >> ONENAND_VERSION_PROCESS_SHIFT)) {
- printk(KERN_INFO "Lock scheme is Continues Lock\n");
- this->options |= ONENAND_CONT_LOCK;
- }
+ /* Check OneNAND lock scheme */
+ onenand_lock_scheme(mtd);
return 0;
}
if (!this->command)
this->command = onenand_command;
if (!this->wait)
- this->wait = onenand_wait;
+ onenand_setup_wait(mtd);
if (!this->read_bufferram)
this->read_bufferram = onenand_read_bufferram;
init_waitqueue_head(&this->wq);
spin_lock_init(&this->chip_lock);
+ /*
+ * Allow subpage writes up to oobsize.
+ */
switch (mtd->oobsize) {
case 64:
- this->autooob = &onenand_oob_64;
+ this->ecclayout = &onenand_oob_64;
+ mtd->subpage_sft = 2;
break;
case 32:
- this->autooob = &onenand_oob_32;
+ this->ecclayout = &onenand_oob_32;
+ mtd->subpage_sft = 1;
break;
default:
printk(KERN_WARNING "No OOB scheme defined for oobsize %d\n",
mtd->oobsize);
+ mtd->subpage_sft = 0;
/* To prevent kernel oops */
- this->autooob = &onenand_oob_32;
+ this->ecclayout = &onenand_oob_32;
break;
}
- memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo));
+ this->subpagesize = mtd->writesize >> mtd->subpage_sft;
+ mtd->ecclayout = this->ecclayout;
/* Fill in remaining MTD driver data */
mtd->type = MTD_NANDFLASH;
mtd->lock_user_prot_reg = onenand_lock_user_prot_reg;
#endif
mtd->sync = onenand_sync;
- mtd->lock = NULL;
+ mtd->lock = onenand_lock;
mtd->unlock = onenand_unlock;
mtd->suspend = onenand_suspend;
mtd->resume = onenand_resume;
mtd->owner = THIS_MODULE;
/* Unlock whole block */
- mtd->unlock(mtd, 0x0, this->chipsize);
+ onenand_unlock_all(mtd);
return this->scan_bbt(mtd);
}
git.openpandora.org / pandora-kernel.git / blobdiff