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Erasing works too now. The CS don't care causes problem with READSTATUS,

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don't ask me why. There are still bugs in the bad block logic.
This commit is contained in:
Markus Klotzbcher 2006-03-03 20:13:43 +01:00 • committed by Markus Klotzbcher
parent 24e1217be3
commit f8785e96c9
1 changed files with 10 additions and 5 deletions
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15
board/delta/nand.c
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@ -218,7 +218,6 @@ static int delta_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
{
/* unsigned long timeo; */
unsigned long ndsr=0, event=0;
unsigned long dummy;
/* mk@tbd set appropriate timeouts */
/* if (state == FL_ERASING) */
@ -228,10 +227,9 @@ static int delta_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
if(state == FL_WRITING) {
event = NDSR_CS0_CMDD | NDSR_CS0_BBD;
} else if(state == FL_ERASING) {
/* do something else */
event = NDSR_CS0_CMDD | NDSR_CS0_BBD;
}
/* dummy = NDDB; */
ndsr = delta_wait_event2(event);
if(ndsr & NDSR_CS0_BBD)
@ -277,8 +275,13 @@ static void delta_cmdfunc(struct mtd_info *mtd, unsigned command,
printk("delta_cmdfunc: NAND_CMD_PAGEPROG.\n");
goto end;
case NAND_CMD_ERASE1:
printf("delta_cmdfunc: NAND_CMD_ERASE1.\n");
delta_new_cmd();
ndcb0 = (0xd060 | (1<<25) | (2<<21) | (1<<19) | (3<<16));
ndcb1 = (page_addr & 0x00ffffff);
break;
case NAND_CMD_ERASE2:
printf("delta_cmdfunc: NAND_CMD_ERASEx unimplemented.\n");
printf("delta_cmdfunc: NAND_CMD_ERASE1 empty due to multicmd.\n");
goto end;
case NAND_CMD_SEQIN:
/* send PAGE_PROG command(0x1080) */
@ -335,6 +338,7 @@ static void delta_cmdfunc(struct mtd_info *mtd, unsigned command,
delta_new_cmd();
ndcb0 = (NAND_CMD_STATUS | (4<<21));
event = NDSR_RDDREQ;
/* #define READ_STATUS_BUG 1 */
#ifdef READ_STATUS_BUG
NDCB0 = ndcb0;
NDCB0 = ndcb1;
@ -522,10 +526,11 @@ void board_nand_init(struct nand_chip *nand)
* - pages per block = 32
* - ND_RDY : clears command buffer
*/
/* NDCR_NCSX | /\* Chip select busy don't care *\/ */
NDCR = (NDCR_SPARE_EN | /* use the spare area */
NDCR_DWIDTH_C | /* 16bit DFC data bus width */
NDCR_DWIDTH_M | /* 16 bit Flash device data bus width */
NDCR_NCSX | /* Chip select busy don't care */
(7 << 16) | /* read id count = 7 ???? mk@tbd */
NDCR_ND_ARB_EN | /* enable bus arbiter */
NDCR_RDYM | /* flash device ready ir masked */