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| author | Markus Klotzbücher <Markus Klotzbümk@pollux.denx.de> | 2006-03-03 20:13:43 +0100 |
|---|---|---|
| committer | Markus Klotzbücher <mk@pollux.denx.de> | 2006-03-03 20:13:43 +0100 |
| commit | f8785e96c9f7249328b267d4c82e2218748e3729 (patch) | |
| tree | 3a545653d27571322a1803c34f617e24c228badd /board/delta/nand.c | |
| parent | 24e1217be3b3c912ec8f7796195fda41275a7f2f (diff) | |
| download | u-boot-imx-f8785e96c9f7249328b267d4c82e2218748e3729.zip u-boot-imx-f8785e96c9f7249328b267d4c82e2218748e3729.tar.gz u-boot-imx-f8785e96c9f7249328b267d4c82e2218748e3729.tar.bz2 | |
Erasing works too now. The CS don't care causes problem with READSTATUS,
don't ask me why. There are still bugs in the bad block logic.
Diffstat (limited to 'board/delta/nand.c')
| -rw-r--r-- | board/delta/nand.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/board/delta/nand.c b/board/delta/nand.c index d37a49e..bc6d7a4 100644 --- a/board/delta/nand.c +++ b/board/delta/nand.c @@ -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 */ |