1 Jun
2009
1 Jun
'09
10:21 p.m.
Hi
2009/5/30 Magnus Lilja lilja.magnus@gmail.com:
2009/5/29 Scott Wood scottwood@freescale.com:
On Sun, May 03, 2009 at 09:56:57PM +0200, Magnus Lilja wrote:
+static void mx31_nand_page_address(unsigned int page_address) +{
- unsigned int page_count;
- writew(0x00, NFC_FLASH_ADDR);
- writew(NFC_ADDR, NFC_CONFIG2);
- mx31_wait_ready();
- /* code only for 2kb flash */
- if (CFG_NAND_PAGE_SIZE == 0x800) {
- writew(0x00, NFC_FLASH_ADDR);
- writew(NFC_ADDR, NFC_CONFIG2);
- mx31_wait_ready();
- }
- page_count = CFG_NAND_CHIP_SIZE / CFG_NAND_PAGE_SIZE;
- if (page_address <= page_count) {
- page_count--; /* transform 0x01000000 to 0x00ffffff */
- do {
- writew(page_address & 0xff, NFC_FLASH_ADDR);
- writew(NFC_ADDR, NFC_CONFIG2);
- mx31_wait_ready();
- page_address = page_address >> 8;
- page_count = page_count >> 8;
- } while (page_count);
- }
Does the number of address bytes really need to depend on the size of the flash chip, or can you base it on the number of non-zero bytes in page_address (the chip will know when the address phase is over because ALE drops)?
Ok, will try to look into it.
I did try to output only the non-zero bytes in the page_address but that didn't work at all, u-boot didn't boot Don't know why though.
/Magnus