*
* Default read function for 8bit buswith
*/
-static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
{
int i;
struct nand_chip *chip = mtd->priv;
*
* Default read function for 16bit buswith
*/
-static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)
+void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)
{
int i;
struct nand_chip *chip = mtd->priv;
struct nand_chip *chip = mtd->priv;
int ret;
- /* Do not allow reads past end of device */
+ /* Do not allow writes past end of device */
if ((to + len) > mtd->size)
return -EINVAL;
if (!len)
/* check version */
val = le16_to_cpu(p->revision);
- if (val == 1 || val > (1 << 4)) {
- printk(KERN_INFO "%s: unsupported ONFI "
- "version: %d\n", __func__, val);
- return 0;
- }
-
- if (val & (1 << 4))
+ if (val & (1 << 5))
+ chip->onfi_version = 23;
+ else if (val & (1 << 4))
chip->onfi_version = 22;
else if (val & (1 << 3))
chip->onfi_version = 21;
else if (val & (1 << 2))
chip->onfi_version = 20;
- else
+ else if (val & (1 << 1))
chip->onfi_version = 10;
+ else
+ chip->onfi_version = 0;
+
+ if (!chip->onfi_version) {
+ printk(KERN_INFO "%s: unsupported ONFI "
+ "version: %d\n", __func__, val);
+ return 0;
+ }
if (!mtd->name)
mtd->name = p->model;
mtd->writesize = le32_to_cpu(p->byte_per_page);
mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize;
mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page);
- chip->chipsize = le32_to_cpu(p->blocks_per_lun) * mtd->erasesize;
+ chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize;
*busw = 0;
if (le16_to_cpu(p->features) & 1)
*busw = NAND_BUSWIDTH_16;