[U-Boot] [PATCH] [OneNAND] Sync with 2.6.27
Kyungmin Park
kmpark at infradead.org
Tue Nov 4 01:24:07 CET 2008
Sync with OneNAND kernel codes
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 9b7bf3a..66214e8 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -78,20 +78,11 @@ static void onenand_writew(unsigned short value, void __iomem * addr)
*
* Setup Start Address 1 Register (F100h)
*/
-static int onenand_block_address(int device, int block)
+static int onenand_block_address(struct onenand_chip *this, int block)
{
- if (device & ONENAND_DEVICE_IS_DDP) {
- /* Device Flash Core select, NAND Flash Block Address */
- int dfs = 0, density, mask;
-
- density = device >> ONENAND_DEVICE_DENSITY_SHIFT;
- mask = (1 << (density + 6));
-
- if (block & mask)
- dfs = 1;
-
- return (dfs << ONENAND_DDP_SHIFT) | (block & (mask - 1));
- }
+ /* Device Flash Core select, NAND Flash Block Address */
+ if (block & this->density_mask)
+ return ONENAND_DDP_CHIP1 | (block ^ this->density_mask);
return block;
}
@@ -104,22 +95,13 @@ static int onenand_block_address(int device, int block)
*
* Setup Start Address 2 Register (F101h) for DDP
*/
-static int onenand_bufferram_address(int device, int block)
+static int onenand_bufferram_address(struct onenand_chip *this, int block)
{
- if (device & ONENAND_DEVICE_IS_DDP) {
- /* Device BufferRAM Select */
- int dbs = 0, density, mask;
-
- density = device >> ONENAND_DEVICE_DENSITY_SHIFT;
- mask = (1 << (density + 6));
-
- if (block & mask)
- dbs = 1;
+ /* Device BufferRAM Select */
+ if (block & this->density_mask)
+ return ONENAND_DDP_CHIP1;
- return (dbs << ONENAND_DDP_SHIFT);
- }
-
- return 0;
+ return ONENAND_DDP_CHIP0;
}
/**
@@ -169,6 +151,18 @@ static int onenand_buffer_address(int dataram1, int sectors, int count)
}
/**
+ * onenand_get_density - [DEFAULT] Get OneNAND density
+ * @param dev_id OneNAND device ID
+ *
+ * Get OneNAND density from device ID
+ */
+static inline int onenand_get_density(int dev_id)
+{
+ int density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT;
+ return (density & ONENAND_DEVICE_DENSITY_MASK);
+}
+
+/**
* onenand_command - [DEFAULT] Send command to OneNAND device
* @param mtd MTD device structure
* @param cmd the command to be sent
@@ -192,6 +186,7 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr,
case ONENAND_CMD_UNLOCK:
case ONENAND_CMD_LOCK:
case ONENAND_CMD_LOCK_TIGHT:
+ case ONENAND_CMD_UNLOCK_ALL:
block = -1;
page = -1;
break;
@@ -212,7 +207,7 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr,
/* NOTE: The setting order of the registers is very important! */
if (cmd == ONENAND_CMD_BUFFERRAM) {
/* Select DataRAM for DDP */
- value = onenand_bufferram_address(this->device_id, block);
+ value = onenand_bufferram_address(this, block);
this->write_word(value,
this->base + ONENAND_REG_START_ADDRESS2);
@@ -224,9 +219,14 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr,
if (block != -1) {
/* Write 'DFS, FBA' of Flash */
- value = onenand_block_address(this->device_id, block);
+ value = onenand_block_address(this, block);
this->write_word(value,
this->base + ONENAND_REG_START_ADDRESS1);
+
+ /* Write 'DFS, FBA' of Flash */
+ value = onenand_bufferram_address(this, block);
+ this->write_word(value,
+ this->base + ONENAND_REG_START_ADDRESS2);
}
if (page != -1) {
@@ -252,15 +252,6 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr,
/* Write 'BSA, BSC' of DataRAM */
value = onenand_buffer_address(dataram, sectors, count);
this->write_word(value, this->base + ONENAND_REG_START_BUFFER);
-
- if (readcmd) {
- /* Select DataRAM for DDP */
- value =
- onenand_bufferram_address(this->device_id, block);
- this->write_word(value,
- this->base +
- ONENAND_REG_START_ADDRESS2);
- }
}
/* Interrupt clear */
@@ -296,14 +287,11 @@ static int onenand_wait(struct mtd_info *mtd, int state)
ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS);
if (ctrl & ONENAND_CTRL_ERROR) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "onenand_wait: controller error = 0x%04x\n", ctrl);
- return -EAGAIN;
- }
+ printk("onenand_wait: controller error = 0x%04x\n", ctrl);
+ if (ctrl & ONENAND_CTRL_LOCK)
+ printk("onenand_wait: it's locked error = 0x%04x\n",
+ ctrl);
- if (ctrl & ONENAND_CTRL_LOCK) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "onenand_wait: it's locked error = 0x%04x\n", ctrl);
return -EIO;
}
@@ -351,7 +339,7 @@ static inline int onenand_bufferram_offset(struct mtd_info *mtd, int area)
*
* Read the BufferRAM area
*/
-static int onenand_read_bufferram(struct mtd_info *mtd, int area,
+static int onenand_read_bufferram(struct mtd_info *mtd, loff_t addr, int area,
unsigned char *buffer, int offset,
size_t count)
{
@@ -376,7 +364,7 @@ static int onenand_read_bufferram(struct mtd_info *mtd, int area,
*
* Read the BufferRAM area with Sync. Burst Mode
*/
-static int onenand_sync_read_bufferram(struct mtd_info *mtd, int area,
+static int onenand_sync_read_bufferram(struct mtd_info *mtd, loff_t addr, int area,
unsigned char *buffer, int offset,
size_t count)
{
@@ -405,7 +393,7 @@ static int onenand_sync_read_bufferram(struct mtd_info *mtd, int area,
*
* Write the BufferRAM area
*/
-static int onenand_write_bufferram(struct mtd_info *mtd, int area,
+static int onenand_write_bufferram(struct mtd_info *mtd, loff_t addr, int area,
const unsigned char *buffer, int offset,
size_t count)
{
@@ -431,21 +419,39 @@ static int onenand_write_bufferram(struct mtd_info *mtd, int area,
static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr)
{
struct onenand_chip *this = mtd->priv;
- int block, page;
- int i;
+ int blockpage, found = 0;
+ unsigned int i;
- block = (int)(addr >> this->erase_shift);
- page = (int)(addr >> this->page_shift);
- page &= this->page_mask;
+#ifdef CONFIG_S3C64XX
+ return 0;
+#endif
- i = ONENAND_CURRENT_BUFFERRAM(this);
+ if (ONENAND_IS_2PLANE(this))
+ blockpage = onenand_get_2x_blockpage(mtd, addr);
+ else
+ blockpage = (int) (addr >> this->page_shift);
/* Is there valid data? */
- if (this->bufferram[i].block == block &&
- this->bufferram[i].page == page && this->bufferram[i].valid)
- return 1;
+ i = ONENAND_CURRENT_BUFFERRAM(this);
+ if (this->bufferram[i].blockpage == blockpage)
+ found = 1;
+ else {
+ /* Check another BufferRAM */
+ i = ONENAND_NEXT_BUFFERRAM(this);
+ if (this->bufferram[i].blockpage == blockpage) {
+ ONENAND_SET_NEXT_BUFFERRAM(this);
+ found = 1;
+ }
+ }
- return 0;
+ if (found && ONENAND_IS_DDP(this)) {
+ /* Select DataRAM for DDP */
+ int block = (int) (addr >> this->erase_shift);
+ int value = onenand_bufferram_address(this, block);
+ this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
+ }
+
+ return found;
}
/**
@@ -460,25 +466,25 @@ static int onenand_update_bufferram(struct mtd_info *mtd, loff_t addr,
int valid)
{
struct onenand_chip *this = mtd->priv;
- int block, page;
- int i;
+ int blockpage;
+ unsigned int i;
- block = (int)(addr >> this->erase_shift);
- page = (int)(addr >> this->page_shift);
- page &= this->page_mask;
+ if (ONENAND_IS_2PLANE(this))
+ blockpage = onenand_get_2x_blockpage(mtd, addr);
+ else
+ blockpage = (int)(addr >> this->page_shift);
- /* Invalidate BufferRAM */
- for (i = 0; i < MAX_BUFFERRAM; i++) {
- if (this->bufferram[i].block == block &&
- this->bufferram[i].page == page)
- this->bufferram[i].valid = 0;
- }
+ /* Invalidate another BufferRAM */
+ i = ONENAND_NEXT_BUFFERRAM(this);
+ if (this->bufferram[i].blockpage == blockpage)
+ this->bufferram[i].blockpage = -1;
/* Update BufferRAM */
i = ONENAND_CURRENT_BUFFERRAM(this);
- this->bufferram[i].block = block;
- this->bufferram[i].page = page;
- this->bufferram[i].valid = valid;
+ if (valid)
+ this->bufferram[i].blockpage = blockpage;
+ else
+ this->bufferram[i].blockpage = -1;
return 0;
}
@@ -500,10 +506,10 @@ static void onenand_invalidate_bufferram(struct mtd_info *mtd, loff_t addr,
/* Invalidate BufferRAM */
for (i = 0; i < MAX_BUFFERRAM; i++) {
- loff_t buf_addr = this->bufferram[i].block << this->erase_shift;
+ loff_t buf_addr = this->bufferram[i].blockpage << this->page_shift;
if (buf_addr >= addr && buf_addr < end_addr)
- this->bufferram[i].valid = 0;
+ this->bufferram[i].blockpage = -1;
}
}
@@ -556,7 +562,7 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf,
readend += free->offset - lastgap;
lastgap = free->offset + free->length;
}
- this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
free = this->ecclayout->oobfree;
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
int free_end = free->offset + free->length;
@@ -594,9 +600,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,
int ret = 0, boundary = 0;
int writesize = this->writesize;
- MTDDEBUG(MTD_DEBUG_LEVEL3,
- "onenand_read_ops_nolock: from = 0x%08x, len = %i\n",
- (unsigned int) from, (int) len);
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
if (ops->mode == MTD_OOB_AUTO)
oobsize = this->ecclayout->oobavail;
@@ -620,6 +624,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,
/* Do first load to bufferRAM */
if (read < len) {
if (!onenand_check_bufferram(mtd, from)) {
+ this->main_buf = buf;
this->command(mtd, ONENAND_CMD_READ, from, writesize);
ret = this->wait(mtd, FL_READING);
onenand_update_bufferram(mtd, from, !ret);
@@ -637,6 +642,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,
/* If there is more to load then start next load */
from += thislen;
if (read + thislen < len) {
+ this->main_buf = buf + thislen;
this->command(mtd, ONENAND_CMD_READ, from, writesize);
/*
* Chip boundary handling in DDP
@@ -653,7 +659,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,
}
/* While load is going, read from last bufferRAM */
- this->read_bufferram(mtd, ONENAND_DATARAM, buf, column, thislen);
+ this->read_bufferram(mtd, from - thislen, ONENAND_DATARAM, buf, column, thislen);
/* Read oob area if needed */
if (oobbuf) {
@@ -663,7 +669,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,
if (ops->mode == MTD_OOB_AUTO)
onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen);
else
- this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen);
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen);
oobread += thisooblen;
oobbuf += thisooblen;
oobcolumn = 0;
@@ -726,9 +732,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from,
from += ops->ooboffs;
- MTDDEBUG(MTD_DEBUG_LEVEL3,
- "onenand_read_oob_nolock: from = 0x%08x, len = %i\n",
- (unsigned int) from, (int) len);
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
/* Initialize return length value */
ops->oobretlen = 0;
@@ -759,6 +763,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from,
thislen = oobsize - column;
thislen = min_t(int, thislen, len);
+ this->spare_buf = buf;
this->command(mtd, ONENAND_CMD_READOOB, from, mtd->oobsize);
onenand_update_bufferram(mtd, from, 0);
@@ -772,7 +777,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from,
if (mode == MTD_OOB_AUTO)
onenand_transfer_auto_oob(mtd, buf, column, thislen);
else
- this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen);
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen);
read += thislen;
@@ -886,12 +891,6 @@ static int onenand_bbt_wait(struct mtd_info *mtd, int state)
interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT);
ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS);
- /* Initial bad block case: 0x2400 or 0x0400 */
- if (ctrl & ONENAND_CTRL_ERROR) {
- printk(KERN_DEBUG "onenand_bbt_wait: controller error = 0x%04x\n", ctrl);
- return ONENAND_BBT_READ_ERROR;
- }
-
if (interrupt & ONENAND_INT_READ) {
int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS);
if (ecc & ONENAND_ECC_2BIT_ALL)
@@ -902,6 +901,12 @@ static int onenand_bbt_wait(struct mtd_info *mtd, int state)
return ONENAND_BBT_READ_FATAL_ERROR;
}
+ /* Initial bad block case: 0x2400 or 0x0400 */
+ if (ctrl & ONENAND_CTRL_ERROR) {
+ printk(KERN_DEBUG "onenand_bbt_wait: controller error = 0x%04x\n", ctrl);
+ return ONENAND_BBT_READ_ERROR;
+ }
+
return 0;
}
@@ -922,9 +927,7 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
size_t len = ops->ooblen;
u_char *buf = ops->oobbuf;
- MTDDEBUG(MTD_DEBUG_LEVEL3,
- "onenand_bbt_read_oob: from = 0x%08x, len = %zi\n",
- (unsigned int) from, len);
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_bbt_read_oob: from = 0x%08x, len = %zi\n", (unsigned int) from, len);
/* Initialize return value */
ops->oobretlen = 0;
@@ -945,15 +948,16 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
thislen = mtd->oobsize - column;
thislen = min_t(int, thislen, len);
+ this->spare_buf = buf;
this->command(mtd, ONENAND_CMD_READOOB, from, mtd->oobsize);
onenand_update_bufferram(mtd, from, 0);
- ret = onenand_bbt_wait(mtd, FL_READING);
+ ret = this->bbt_wait(mtd, FL_READING);
if (ret)
break;
- this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen);
+ this->read_spareram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen);
read += thislen;
if (read == len)
break;
@@ -995,7 +999,7 @@ static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to
if (status)
return status;
- this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
for (i = 0; i < mtd->oobsize; i++)
if (buf[i] != 0xFF && buf[i] != oob_buf[i])
return -EBADMSG;
@@ -1115,9 +1119,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
u_char *oobbuf;
int ret = 0;
- MTDDEBUG(MTD_DEBUG_LEVEL3,
- "onenand_write_ops_nolock: to = 0x%08x, len = %i\n",
- (unsigned int) to, (int) len);
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ops_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
/* Initialize retlen, in case of early exit */
ops->retlen = 0;
@@ -1161,7 +1163,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
wbuf = this->page_buf;
}
- this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, mtd->writesize);
+ this->write_bufferram(mtd, to, ONENAND_DATARAM, wbuf, 0, mtd->writesize);
if (oob) {
oobbuf = this->oob_buf;
@@ -1180,7 +1182,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
} else
oobbuf = (u_char *) ffchars;
- this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize);
+ this->write_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize);
this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize);
@@ -1244,9 +1246,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to,
to += ops->ooboffs;
- MTDDEBUG(MTD_DEBUG_LEVEL3,
- "onenand_write_oob_nolock: to = 0x%08x, len = %i\n",
- (unsigned int) to, (int) len);
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
/* Initialize retlen, in case of early exit */
ops->oobretlen = 0;
@@ -1293,7 +1293,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to,
onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen);
else
memcpy(oobbuf + column, buf, thislen);
- this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize);
+ this->write_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize);
this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize);
@@ -1466,7 +1466,14 @@ int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
while (len) {
- /* TODO Check badblock */
+ /* Check if we have a bad block, we do not erase bad blocks */
+ if (instr->priv == 0 && onenand_block_isbad_nolock(mtd, addr, 0)) {
+ printk(KERN_WARNING "onenand_erase: attempt to erase"
+ " a bad block at addr 0x%08x\n",
+ (unsigned int) addr);
+ instr->state = MTD_ERASE_FAILED;
+ goto erase_exit;
+ }
this->command(mtd, ONENAND_CMD_ERASE, addr, block_size);
@@ -1482,8 +1489,16 @@ int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
MTDDEBUG (MTD_DEBUG_LEVEL0, "onenand_erase: "
"Failed erase, block %d\n",
(unsigned)(addr >> this->erase_shift));
+ if (ret == -EPERM)
+ printk("onenand_erase: "
+ "Device is write protected!!!\n");
+ else
+ printk("onenand_erase: "
+ "Failed erase, block %d\n",
+ (unsigned)(addr >> this->erase_shift));
instr->state = MTD_ERASE_FAILED;
instr->fail_addr = addr;
+
goto erase_exit;
}
@@ -1493,7 +1508,7 @@ int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
instr->state = MTD_ERASE_DONE;
- erase_exit:
+erase_exit:
ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
/* Do call back function */
@@ -1569,23 +1584,30 @@ int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs)
}
/**
- * 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
+ * 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 lock or unlock
+ * @param cmd lock or unlock command
*
- * Unlock one or more blocks
+ * Lock or unlock one or more blocks
*/
-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);
@@ -1593,7 +1615,7 @@ int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
this->write_word(end - 1,
this->base + ONENAND_REG_END_BLOCK_ADDRESS);
/* Write unlock command */
- this->command(mtd, ONENAND_CMD_UNLOCK, 0, 0);
+ this->command(mtd, cmd, 0, 0);
/* There's no return value */
this->wait(mtd, FL_UNLOCKING);
@@ -1612,7 +1634,14 @@ int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
}
/* 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);
+ /* 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);
@@ -1627,11 +1656,6 @@ int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
& ONENAND_CTRL_ONGO)
continue;
- /* Set block address for read block status */
- value = onenand_block_address(this->device_id, block);
- this->write_word(value,
- this->base + ONENAND_REG_START_ADDRESS1);
-
/* Check lock status */
status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
if (!(status & ONENAND_WP_US))
@@ -1643,31 +1667,196 @@ int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
}
/**
+ * 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)
+{
+ int ret;
+
+ onenand_get_device(mtd, FL_LOCKING);
+ ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_LOCK);
+ onenand_release_device(mtd);
+ return ret;
+}
+
+/**
+ * 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)
+{
+ int ret;
+
+ onenand_get_device(mtd, FL_LOCKING);
+ ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK);
+ onenand_release_device(mtd);
+ return ret;
+}
+
+/**
+ * onenand_check_lock_status - [OneNAND Interface] Check lock status
+ * @param this onenand chip data structure
+ *
+ * Check lock status
+ */
+static int 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);
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+/**
+ * onenand_unlock_all - [OneNAND Interface] unlock all blocks
+ * @param mtd MTD device structure
+ *
+ * Unlock all blocks
+ */
+static void onenand_unlock_all(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ loff_t ofs = 0;
+ size_t len = this->chipsize;
+
+ if (this->options & ONENAND_HAS_UNLOCK_ALL) {
+ /* Set start block address */
+ this->write_word(0, this->base + ONENAND_REG_START_BLOCK_ADDRESS);
+ /* 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;
+
+ return;
+
+ /* Check lock status */
+ if (onenand_check_lock_status(this))
+ return;
+
+ /* Workaround for all block unlock in DDP */
+ if (ONENAND_IS_DDP(this)) {
+ /* All blocks on another chip */
+ ofs = this->chipsize >> 1;
+ len = this->chipsize >> 1;
+ }
+ }
+
+ onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK);
+}
+
+
+/**
+ * onenand_check_features - Check and set OneNAND features
+ * @param mtd MTD data structure
+ *
+ * Check and set OneNAND features
+ * - lock scheme
+ * - two plane
+ */
+static void onenand_check_features(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ unsigned int density, process;
+
+ /* Lock scheme depends on density and process */
+ density = onenand_get_density(this->device_id);
+ process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT;
+
+ /* Lock scheme */
+ switch (density) {
+ case ONENAND_DEVICE_DENSITY_4Gb:
+ this->options |= ONENAND_HAS_2PLANE;
+
+ case ONENAND_DEVICE_DENSITY_2Gb:
+ /* 2Gb DDP don't have 2 plane */
+ if (!ONENAND_IS_DDP(this))
+ this->options |= ONENAND_HAS_2PLANE;
+ this->options |= ONENAND_HAS_UNLOCK_ALL;
+
+ case ONENAND_DEVICE_DENSITY_1Gb:
+ /* A-Die has all block unlock */
+ if (process)
+ this->options |= ONENAND_HAS_UNLOCK_ALL;
+ break;
+
+ default:
+ /* Some OneNAND has continuous lock scheme */
+ if (!process)
+ this->options |= ONENAND_HAS_CONT_LOCK;
+ break;
+ }
+
+ if (this->options & ONENAND_HAS_CONT_LOCK)
+ printk(KERN_DEBUG "Lock scheme is Continuous Lock\n");
+ if (this->options & ONENAND_HAS_UNLOCK_ALL)
+ printk(KERN_DEBUG "Chip support all block unlock\n");
+ if (this->options & ONENAND_HAS_2PLANE)
+ printk(KERN_DEBUG "Chip has 2 plane\n");
+}
+
+/**
* onenand_print_device_info - Print device ID
* @param device device ID
*
* Print device ID
*/
-char * onenand_print_device_info(int device)
+char *onenand_print_device_info(int device, int version)
{
int vcc, demuxed, ddp, density;
char *dev_info = malloc(80);
+ char *p = dev_info;
vcc = device & ONENAND_DEVICE_VCC_MASK;
demuxed = device & ONENAND_DEVICE_IS_DEMUX;
ddp = device & ONENAND_DEVICE_IS_DDP;
density = device >> ONENAND_DEVICE_DENSITY_SHIFT;
- sprintf(dev_info, "%sOneNAND%s %dMB %sV 16-bit (0x%02x)",
+ p += sprintf(dev_info, "%sOneNAND%s %dMB %sV 16-bit (0x%02x)",
demuxed ? "" : "Muxed ",
ddp ? "(DDP)" : "",
(16 << density), vcc ? "2.65/3.3" : "1.8", device);
+ sprintf(p, "\nOneNAND version = 0x%04x", version);
+ printk("%s\n", dev_info);
+
return dev_info;
}
static const struct onenand_manufacturers onenand_manuf_ids[] = {
{ONENAND_MFR_SAMSUNG, "Samsung"},
- {ONENAND_MFR_UNKNOWN, "Unknown"}
};
/**
@@ -1678,19 +1867,24 @@ static const struct onenand_manufacturers onenand_manuf_ids[] = {
*/
static int onenand_check_maf(int manuf)
{
+ int size = ARRAY_SIZE(onenand_manuf_ids);
+ char *name;
int i;
- for (i = 0; onenand_manuf_ids[i].id; i++) {
+ for (i = 0; size; i++)
if (manuf == onenand_manuf_ids[i].id)
break;
- }
+
+ if (i < size)
+ name = onenand_manuf_ids[i].name;
+ else
+ name = "Unknown";
#ifdef ONENAND_DEBUG
- printk(KERN_DEBUG "OneNAND Manufacturer: %s (0x%0x)\n",
- onenand_manuf_ids[i].name, manuf);
+ printk(KERN_DEBUG "OneNAND Manufacturer: %s (0x%0x)\n", name, manuf);
#endif
- return (i != ONENAND_MFR_UNKNOWN);
+ return i == size;
}
/**
@@ -1703,9 +1897,14 @@ static int onenand_check_maf(int manuf)
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);
@@ -1714,19 +1913,23 @@ static int onenand_probe(struct mtd_info *mtd)
bram_maf_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x0);
bram_dev_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x2);
- /* 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);
/* 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;
+
/* 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)
@@ -1739,11 +1942,16 @@ static int onenand_probe(struct mtd_info *mtd)
}
/* Flash device information */
- mtd->name = onenand_print_device_info(dev_id);
+ mtd->name = onenand_print_device_info(dev_id, ver_id);
this->device_id = dev_id;
- density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT;
+ density = onenand_get_density(dev_id);
this->chipsize = (16 << density) << 20;
+ /* Set density mask. it is used for DDP */
+ if (ONENAND_IS_DDP(this))
+ this->density_mask = (1 << (density + 6));
+ else
+ this->density_mask = 0;
/* OneNAND page size & block size */
/* The data buffer size is equal to page size */
@@ -1764,18 +1972,8 @@ static int onenand_probe(struct mtd_info *mtd)
mtd->size = this->chipsize;
- /* Version ID */
- version_id = this->read_word(this->base + ONENAND_REG_VERSION_ID);
-#ifdef ONENAND_DEBUG
- printk(KERN_DEBUG "OneNAND version = 0x%04x\n", version_id);
-#endif
-
- /* 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 features */
+ onenand_check_features(mtd);
mtd->flags = MTD_CAP_NANDFLASH;
mtd->erase = onenand_erase;
@@ -1813,12 +2011,19 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
this->command = onenand_command;
if (!this->wait)
this->wait = onenand_wait;
+ if (!this->bbt_wait)
+ this->bbt_wait = onenand_bbt_wait;
if (!this->read_bufferram)
this->read_bufferram = onenand_read_bufferram;
+ if (!this->read_spareram)
+ this->read_spareram = onenand_read_bufferram;
if (!this->write_bufferram)
this->write_bufferram = onenand_write_bufferram;
+ if (!this->scan_bbt)
+ this->scan_bbt = onenand_default_bbt;
+
if (onenand_probe(mtd))
return -ENXIO;
@@ -1850,9 +2055,10 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
this->options |= ONENAND_OOBBUF_ALLOC;
}
- onenand_unlock(mtd, 0, mtd->size);
+ /* Unlock whole block */
+ onenand_unlock_all(mtd);
- return onenand_default_bbt(mtd);
+ return this->scan_bbt(mtd);
}
/**
diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c
index f6092b9..d538f95 100644
--- a/drivers/mtd/onenand/onenand_bbt.c
+++ b/drivers/mtd/onenand/onenand_bbt.c
@@ -3,7 +3,7 @@
*
* Bad Block Table support for the OneNAND driver
*
- * Copyright(c) 2005-2007 Samsung Electronics
+ * Copyright(c) 2005-2008 Samsung Electronics
* Kyungmin Park <kyungmin.park at samsung.com>
*
* TODO:
@@ -54,7 +54,7 @@ static int check_short_pattern(uint8_t * buf, int len, int paglen,
* @param buf temporary buffer
* @param bd descriptor for the good/bad block search pattern
* @param chip create the table for a specific chip, -1 read all chips.
- * Applies only if NAND_BBT_PERCHIP option is set
+ * Applies only if NAND_BBT_PERCHIP option is set
*
* Create a bad block table by scanning the device
* for the given good/bad block identify pattern
@@ -156,8 +156,8 @@ static int onenand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt)
res = (bbm->bbt[block >> 3] >> (block & 0x06)) & 0x03;
MTDDEBUG (MTD_DEBUG_LEVEL2,
- "onenand_isbad_bbt: bbt info for offs 0x%08x: (block %d) 0x%02x\n",
- (unsigned int)offs, block >> 1, res);
+ "onenand_isbad_bbt: bbt info for offs 0x%08x: (block %d) 0x%02x\n",
+ (unsigned int)offs, block >> 1, res);
switch ((int)res) {
case 0x00:
diff --git a/drivers/mtd/onenand/onenand_uboot.c b/drivers/mtd/onenand/onenand_uboot.c
index 08082f3..e4b6129 100644
--- a/drivers/mtd/onenand/onenand_uboot.c
+++ b/drivers/mtd/onenand/onenand_uboot.c
@@ -26,9 +26,17 @@ void onenand_init(void)
memset(&onenand_mtd, 0, sizeof(struct mtd_info));
memset(&onenand_chip, 0, sizeof(struct onenand_chip));
- onenand_chip.base = (void *) CONFIG_SYS_ONENAND_BASE;
onenand_mtd.priv = &onenand_chip;
+#ifdef CONFIG_USE_ONENAND_BOARD_INIT
+ /*
+ * It's used for some board init required
+ */
+ onenand_board_init(&onenand_mtd);
+#else
+ onenand_chip.base = (void *) CONFIG_SYS_ONENAND_BASE;
+#endif
+
onenand_scan(&onenand_mtd, 1);
puts("OneNAND: ");
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 4467c2b..7547e96 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -30,14 +30,10 @@ extern void onenand_release (struct mtd_info *mtd);
/**
* struct onenand_bufferram - OneNAND BufferRAM Data
- * @param block block address in BufferRAM
- * @param page page address in BufferRAM
- * @param valid valid flag
+ * @param blockpage block & page address in BufferRAM
*/
struct onenand_bufferram {
- int block;
- int page;
- int valid;
+ int blockpage;
};
/**
@@ -70,6 +66,8 @@ struct onenand_chip {
void __iomem *base;
unsigned int chipsize;
unsigned int device_id;
+ unsigned int version_id;
+ unsigned int density_mask;
unsigned int options;
unsigned int erase_shift;
@@ -81,26 +79,35 @@ struct onenand_chip {
unsigned int bufferram_index;
struct onenand_bufferram bufferram[MAX_BUFFERRAM];
- int (*command) (struct mtd_info * mtd, int cmd, loff_t address,
+ int (*command) (struct mtd_info *mtd, int cmd, loff_t address,
size_t len);
- int (*wait) (struct mtd_info * mtd, int state);
- int (*read_bufferram) (struct mtd_info * mtd, int area,
+ int (*wait) (struct mtd_info *mtd, int state);
+ int (*bbt_wait) (struct mtd_info *mtd, int state);
+ int (*read_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
unsigned char *buffer, int offset, size_t count);
- int (*write_bufferram) (struct mtd_info * mtd, int area,
+ int (*read_spareram) (struct mtd_info *mtd, loff_t addr, int area,
+ unsigned char *buffer, int offset, size_t count);
+ int (*write_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
const unsigned char *buffer, int offset,
size_t count);
- unsigned short (*read_word) (void __iomem * addr);
- void (*write_word) (unsigned short value, void __iomem * addr);
- void (*mmcontrol) (struct mtd_info * mtd, int sync_read);
+ unsigned short (*read_word) (void __iomem *addr);
+ void (*write_word) (unsigned short value, void __iomem *addr);
+ void (*mmcontrol) (struct mtd_info *mtd, int sync_read);
int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
int (*scan_bbt)(struct mtd_info *mtd);
+ unsigned char *main_buf;
+ unsigned char *spare_buf;
+#ifdef DONT_USE_UBOOT
+ spinlock_t chip_lock;
+ wait_queue_head_t wq;
+#endif
int state;
- unsigned char *page_buf;
- unsigned char *oob_buf;
+ unsigned char *page_buf;
+ unsigned char *oob_buf;
struct nand_oobinfo *autooob;
- struct nand_ecclayout *ecclayout;
+ struct nand_ecclayout *ecclayout;
void *bbm;
@@ -125,7 +132,9 @@ struct onenand_chip {
/*
* Options bits
*/
-#define ONENAND_CONT_LOCK (0x0001)
+#define ONENAND_HAS_CONT_LOCK (0x0001)
+#define ONENAND_HAS_UNLOCK_ALL (0x0002)
+#define ONENAND_HAS_2PLANE (0x0004)
#define ONENAND_PAGEBUF_ALLOC (0x1000)
#define ONENAND_OOBBUF_ALLOC (0x2000)
@@ -133,7 +142,6 @@ struct onenand_chip {
* OneNAND Flash Manufacturer ID Codes
*/
#define ONENAND_MFR_SAMSUNG 0xec
-#define ONENAND_MFR_UNKNOWN 0x00
/**
* struct nand_manufacturers - NAND Flash Manufacturer ID Structure
diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h
index a245e14..fc63380 100644
--- a/include/linux/mtd/onenand_regs.h
+++ b/include/linux/mtd/onenand_regs.h
@@ -119,6 +119,7 @@
#define ONENAND_CMD_UNLOCK (0x23)
#define ONENAND_CMD_LOCK (0x2A)
#define ONENAND_CMD_LOCK_TIGHT (0x2C)
+#define ONENAND_CMD_UNLOCK_ALL (0x27)
#define ONENAND_CMD_ERASE (0x94)
#define ONENAND_CMD_RESET (0xF0)
#define ONENAND_CMD_READID (0x90)
diff --git a/include/onenand_uboot.h b/include/onenand_uboot.h
index e960257..5a4fded 100644
--- a/include/onenand_uboot.h
+++ b/include/onenand_uboot.h
@@ -15,25 +15,29 @@
#define __UBOOT_ONENAND_H
#include <linux/types.h>
-#include <linux/mtd/mtd.h>
struct mtd_info;
struct erase_info;
+struct onenand_chip;
extern struct mtd_info onenand_mtd;
+/* board */
+extern void onenand_board_init(struct mtd_info *);
+
/* Functions */
extern void onenand_init(void);
extern int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t * retlen, u_char * buf);
-extern int onenand_read_oob(struct mtd_info *mtd, loff_t from,
- struct mtd_oob_ops *ops);
+extern int onenand_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops);
extern int onenand_write(struct mtd_info *mtd, loff_t from, size_t len,
size_t * retlen, const u_char * buf);
extern int onenand_erase(struct mtd_info *mtd, struct erase_info *instr);
-extern int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+extern char *onenand_print_device_info(int device, int version);
-extern char *onenand_print_device_info(int device);
+/* S3C64xx */
+extern void s3c64xx_onenand_init(struct mtd_info *);
+extern void s3c64xx_set_width_regs(struct onenand_chip *);
#endif /* __UBOOT_ONENAND_H */
More information about the U-Boot
mailing list