Hello Christian, Scott,
current mainline code of U-Boot:
commit 9a3aae22edf1eda6326cc51c28631ca5c23b7706 Author: Christian Riesch christian.riesch@omicron.at Date: Thu Feb 2 00:44:42 2012 +0000
arm, davinci: Add support for the Calimain board from OMICRON electronics
This patch adds support for the Calimain board from OMICRON electronics GmbH. The board features a Texas Instruments AM1808 SoC, 128 MB DDR2 memory, and 64 MB NOR flash memory connected to CS2 and CS3.
Signed-off-by: Christian Riesch christian.riesch@omicron.at
shows now on startup the following printfs on the enbw_cmc board:
U-Boot 2011.12-00331-ga400f85 (Feb 13 2012 - 08:49:17)
I2C: ready [...] NAND: Bad block table found at page 65472, version 0x01 Bad block table found at page 65408, version 0x01 nand_read_bbt: Bad block at 0x000002980000 nand_read_bbt: Bad block at 0x000003240000 128 MiB MMC: davinci: 0
Found with "git bisect" the reason:
[hs@pollux u-boot]$ git bisect good 2a8e0fc8b3dc31a3c571e439fbf04b882c8986be is the first bad commit commit 2a8e0fc8b3dc31a3c571e439fbf04b882c8986be Author: Christian Hitz christian.hitz@aizo.com Date: Wed Oct 12 09:32:02 2011 +0200
nand: Merge changes from Linux nand driver
[backport from linux commit 02f8c6aee8df3cdc935e9bdd4f2d020306035dbe]
This patch synchronizes the nand driver with the Linux 3.0 state.
Signed-off-by: Christian Hitz christian.hitz@aizo.com Cc: Scott Wood scottwood@freescale.com [scottwood@freescale.com: minor fixes] Signed-off-by: Scott Wood scottwood@freescale.com
:040000 040000 5ab34f43b64379528b9ef2652c8481fdab1a927a b453a49035e179dfb5f31c3164a1b7d3d62d66d6 M drivers :040000 040000 b59a7f3136da038b4b49c48cd0958e140a09ed66 a8fd298715a562fda0a350e6f732c1072ca7d410 M include [hs@pollux u-boot]$
Looking in this patch, it seems to me, this is the "reason":
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 758b53f..ed2640c 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c [...] @@ -2992,9 +3145,10 @@ int nand_scan_tail(struct mtd_info *mtd)
/* Check, if we should skip the bad block table scan */ if (chip->options & NAND_SKIP_BBTSCAN) - chip->options |= NAND_BBT_SCANNED; + return 0;
- return 0; + /* Build bad block table */ + return chip->scan_bbt(mtd); }
/**
... This printfs in the startoutput are suboptimal ... maybe we apply the following patch:
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 2b730e0..bf12df8 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -259,10 +259,10 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, mtd->ecc_stats.bbtblocks++; continue; } - /* Leave it for now, if its matured we can move this - * message to MTD_DEBUG_LEVEL0 */ - printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%012llx\n", - (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); + MTDDEBUG(MTD_DEBUG_LEVEL0, "nand_read_bbt: " \ + "Bad block at 0x%012llx\n", + (loff_t)((offs << 2) + (act >> 1)) + << this->bbt_erase_shift); /* Factory marked bad or worn out ? */ if (tmp == 0) this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); @@ -651,8 +651,9 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr if (td->pages[i] == -1) printk(KERN_WARNING "Bad block table not found for chip %d\n", i); else - printk(KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], - td->version[i]); + MTDDEBUG(MTD_DEBUG_LEVEL0, "Bad block table found " \ + "at page %d, version 0x%02X\n", td->pages[i], + td->version[i]); } return 0; }
If this patch is OK, I can send it ...
bye, Heiko