|
@@ -1,5 +1,5 @@
|
|
|
/*
|
|
|
- * (C) Copyright 2005-2008 Samsung Electronis
|
|
|
+ * (C) Copyright 2005-2009 Samsung Electronics
|
|
|
* Kyungmin Park <kyungmin.park@samsung.com>
|
|
|
*
|
|
|
* See file CREDITS for list of people who contributed to this
|
|
@@ -37,8 +37,10 @@
|
|
|
extern void *memcpy32(void *dest, void *src, int size);
|
|
|
#endif
|
|
|
|
|
|
+int (*onenand_read_page)(ulong block, ulong page, u_char *buf, int pagesize);
|
|
|
+
|
|
|
/* read a page with ECC */
|
|
|
-static inline int onenand_read_page(ulong block, ulong page,
|
|
|
+static int generic_onenand_read_page(ulong block, ulong page,
|
|
|
u_char * buf, int pagesize)
|
|
|
{
|
|
|
unsigned long *base;
|
|
@@ -89,9 +91,25 @@ static inline int onenand_read_page(ulong block, ulong page,
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
|
-#define ONENAND_START_PAGE 1
|
|
|
+#ifndef CONFIG_ONENAND_START_PAGE
|
|
|
+#define CONFIG_ONENAND_START_PAGE 1
|
|
|
+#endif
|
|
|
#define ONENAND_PAGES_PER_BLOCK 64
|
|
|
|
|
|
+static void onenand_generic_init(int *page_is_4KiB, int *page)
|
|
|
+{
|
|
|
+ int dev_id, density;
|
|
|
+
|
|
|
+ if (onenand_readw(ONENAND_REG_TECHNOLOGY))
|
|
|
+ *page_is_4KiB = 1;
|
|
|
+ dev_id = onenand_readw(ONENAND_REG_DEVICE_ID);
|
|
|
+ density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT;
|
|
|
+ density &= ONENAND_DEVICE_DENSITY_MASK;
|
|
|
+ if (density >= ONENAND_DEVICE_DENSITY_4Gb &&
|
|
|
+ !(dev_id & ONENAND_DEVICE_IS_DDP))
|
|
|
+ *page_is_4KiB = 1;
|
|
|
+}
|
|
|
+
|
|
|
/**
|
|
|
* onenand_read_block - Read CONFIG_SYS_MONITOR_LEN from begining
|
|
|
* of OneNAND, skipping bad blocks
|
|
@@ -99,24 +117,28 @@ static inline int onenand_read_page(ulong block, ulong page,
|
|
|
*/
|
|
|
int onenand_read_block(unsigned char *buf)
|
|
|
{
|
|
|
- int block;
|
|
|
- int page = ONENAND_START_PAGE, offset = 0;
|
|
|
- int pagesize = 0, erase_shift = 0;
|
|
|
- int erasesize = 0, nblocks = 0;
|
|
|
+ int block, nblocks;
|
|
|
+ int page = CONFIG_ONENAND_START_PAGE, offset = 0;
|
|
|
+ int pagesize, erasesize, erase_shift;
|
|
|
+ int page_is_4KiB = 0;
|
|
|
+
|
|
|
+ onenand_read_page = generic_onenand_read_page;
|
|
|
+
|
|
|
+ onenand_generic_init(&page_is_4KiB, &page);
|
|
|
|
|
|
- if (onenand_readw(ONENAND_REG_TECHNOLOGY)) {
|
|
|
- pagesize = 4096; /* MLC OneNAND has 4KiB pagesize */
|
|
|
+ if (page_is_4KiB) {
|
|
|
+ pagesize = 4096; /* OneNAND has 4KiB pagesize */
|
|
|
erase_shift = 18;
|
|
|
} else {
|
|
|
- pagesize = 2048;
|
|
|
+ pagesize = 2048; /* OneNAND has 2KiB pagesize */
|
|
|
erase_shift = 17;
|
|
|
}
|
|
|
|
|
|
- erasesize = ONENAND_PAGES_PER_BLOCK * pagesize;
|
|
|
+ erasesize = (1 << erase_shift);
|
|
|
nblocks = (CONFIG_SYS_MONITOR_LEN + erasesize - 1) >> erase_shift;
|
|
|
|
|
|
/* NOTE: you must read page from page 1 of block 0 */
|
|
|
- /* read the block page by page*/
|
|
|
+ /* read the block page by page */
|
|
|
for (block = 0; block < nblocks; block++) {
|
|
|
for (; page < ONENAND_PAGES_PER_BLOCK; page++) {
|
|
|
if (onenand_read_page(block, page, buf + offset,
|