[U-Boot] [PATCH] add explicit bbt creation to commandline

[Steven Zedeck]

Scott Wood-2 wrote:
> 
> On Fri, Feb 12, 2010 at 06:14:51PM -0800, Steven Zedeck wrote:
>> Its in board/atmel/at91sam9rlek/nand.c
>> 
>> It doesn't do much but set up the various GPIO connections. Here's the
>> function:
>> 
>> int board_nand_init(struct nand_chip *nand)
>> {
>> 	nand->ecc.mode = NAND_ECC_SOFT;
>> #ifdef CFG_NAND_DBW_16
>> 	nand->options = NAND_BUSWIDTH_16;
>> #endif
>> 	nand->cmd_ctrl = at91sam9rlek_nand_hwcontrol;
>> 	nand->dev_ready = at91sam9rlek_nand_ready;
>> 	nand->chip_delay = 20;
>> 
>> 	return 0;
>> }
> 
> Add "nand->options |= NAND_USE_FLASH_BBT;".
> 
> -Scott
> 
> 

Scott,
I really appreciate your help. I added what you suggested, except since we
are using an 8 bit wide bus and not 16 I had to do the following:

#ifdef CFG_NAND_DBW_8
    nand->options |= NAND_USE_FLASH_BBT;
#endif

CFG_NAND_DBW_8 is set in my configs.h file.

Now when my board boots I get this and then it just stops:
NAND:  Entering nand_init
Nand Base 0x40000000
Bad block table not found for chip 0
Bad block table not found for chip 0

That comes from nand_bbt.c
Clearly there is something I'm missing regarding how the BBT is created and
utilized in Uboot.

thanks,
Steve

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