Provided by:
linux-doc-2.6.15_2.6.15-23.39_all 
NAME
read_abs_bbt - [GENERIC] Read the bad block table starting at a given
page
SYNOPSIS
int read_abs_bbt (struct mtd_info * mtd, uint8_t * buf,
struct nand_bbt_descr * td, int chip);
ARGUMENTS
mtd MTD device structure
buf temporary buffer
td descriptor for the bad block table
chip read the table for a specific chip, -1 read all chips. Applies
only if NAND_BBT_PERCHIP option is set
DESCRIPTION
Read the bad block table for all chips starting at a given page We
assume that the bbt bits are in consecutive order.
AUTHOR
Thomas Gleixner <tglx@linutronix.de>.