Fix OneNAND ipl to read CONFIG_SYS_MONITOR_LEN
Currently OneNAND initial program loader (ipl) reads only block 0 ie 128KB.
However, u-boot image for apollon board is 195KB making the board
unbootable with OneNAND.
Fix ipl to read CONFIG_SYS_MONITOR_LEN.
CONFIG_SYS_MONITOR_LEN macro holds the U-Boot image size.
Signed-off-by: Rohit Hagargundgi <h.rohit@samsung.com>
Signed-off-by: Gangheyamoorthy <moorthy.apg@samsung.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/onenand_ipl/onenand_read.c b/onenand_ipl/onenand_read.c
index 6d04943..d1a842d 100644
--- a/onenand_ipl/onenand_read.c
+++ b/onenand_ipl/onenand_read.c
@@ -49,20 +49,20 @@
#endif
onenand_writew(onenand_block_address(block),
- THIS_ONENAND(ONENAND_REG_START_ADDRESS1));
+ ONENAND_REG_START_ADDRESS1);
onenand_writew(onenand_bufferram_address(block),
- THIS_ONENAND(ONENAND_REG_START_ADDRESS2));
+ ONENAND_REG_START_ADDRESS2);
onenand_writew(onenand_sector_address(page),
- THIS_ONENAND(ONENAND_REG_START_ADDRESS8));
+ ONENAND_REG_START_ADDRESS8);
onenand_writew(onenand_buffer_address(),
- THIS_ONENAND(ONENAND_REG_START_BUFFER));
+ ONENAND_REG_START_BUFFER);
- onenand_writew(ONENAND_INT_CLEAR, THIS_ONENAND(ONENAND_REG_INTERRUPT));
+ onenand_writew(ONENAND_INT_CLEAR, ONENAND_REG_INTERRUPT);
- onenand_writew(ONENAND_CMD_READ, THIS_ONENAND(ONENAND_REG_COMMAND));
+ onenand_writew(ONENAND_CMD_READ, ONENAND_REG_COMMAND);
#ifndef __HAVE_ARCH_MEMCPY32
p = (unsigned long *) buf;
@@ -72,6 +72,10 @@
while (!(READ_INTERRUPT() & ONENAND_INT_READ))
continue;
+ /* Check for invalid block mark */
+ if (page < 2 && (onenand_readw(ONENAND_SPARERAM) != 0xffff))
+ return 1;
+
#ifdef __HAVE_ARCH_MEMCPY32
/* 32 bytes boundary memory copy */
memcpy32(buf, base, pagesize);
@@ -89,25 +93,43 @@
#define ONENAND_PAGES_PER_BLOCK 64
/**
- * onenand_read_block - Read a block data to buf
+ * onenand_read_block - Read CONFIG_SYS_MONITOR_LEN from begining
+ * of OneNAND, skipping bad blocks
* @return 0 on success
*/
-int onenand_read_block0(unsigned char *buf)
+int onenand_read_block(unsigned char *buf)
{
- int page, offset = 0;
- int pagesize = ONENAND_PAGE_SIZE;
+ int block;
+ int page = ONENAND_START_PAGE, offset = 0;
+ int pagesize = 0, erase_shift = 0;
+ int erasesize = 0, nblocks = 0;
- /* MLC OneNAND has 4KiB page size */
- if (onenand_readw(THIS_ONENAND(ONENAND_REG_TECHNOLOGY)))
- pagesize <<= 1;
+ if (onenand_readw(ONENAND_REG_TECHNOLOGY)) {
+ pagesize = 4096; /* MLC OneNAND has 4KiB pagesize */
+ erase_shift = 18;
+ } else {
+ pagesize = 2048;
+ erase_shift = 17;
+ }
+
+ erasesize = ONENAND_PAGES_PER_BLOCK * pagesize;
+ 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*/
- for (page = ONENAND_START_PAGE;
- page < ONENAND_PAGES_PER_BLOCK; page++) {
-
- onenand_read_page(0, page, buf + offset, pagesize);
- offset += pagesize;
+ for (block = 0; block < nblocks; block++) {
+ for (; page < ONENAND_PAGES_PER_BLOCK; page++) {
+ if (onenand_read_page(block, page, buf + offset,
+ pagesize)) {
+ /* This block is bad. Skip it
+ * and read next block */
+ offset -= page * pagesize;
+ nblocks++;
+ break;
+ }
+ offset += pagesize;
+ }
+ page = 0;
}
return 0;