Hi,
in my custom board i using TOSHIBA TC58NVG1S3ETA00 2GB NAND flash.
i sucessfully flashing the MLO and u-boot.img to the NAND flash with the help from following link:
http://processors.wiki.ti.com/index.php/AM335x_U-Boot_User's_Guide
for flashing kernel image and file system, i follow the instruction and command from the link above. After i reset my board, it can boot into u-boot, when booting the kernel image, it come out the error message:
Error: Bad compare! failed
Error: Bad compare! failed
Error: Bad compare! failed ......
My u-boot nand boot config ("u-boot-04.06.00.02/include/configs/am335x_evm.h) is as bellow:
#define CONFIG_SPL_NAND_SIMPLE
#define CONFIG_SPL_NAND_SUPPORT
#define CONFIG_SYS_NAND_5_ADDR_CYCLE
#define CONFIG_SYS_NAND_PAGE_SIZE 2048
#define CONFIG_SYS_NAND_OOBSIZE 64
#define CONFIG_SYS_NAND_BLOCK_SIZE (128*1024)
#define CONFIG_SYS_NAND_BAD_BLOCK_POS NAND_LARGE_BADBLOCK_POS #define CONFIG_SYS_NAND_ECCPOS { 2, 3, 4, 5, 6, 7, 8, 9, \
10, 11, 12, 13, 14, 15, 16, 17, \
18, 19, 20, 21, 22, 23, 24, 25, \
26, 27, 28, 29, 30, 31, 32, 33, \
34, 35, 36, 37, 38, 39, 40, 41, \
42, 43, 44, 45, 46, 47, 48, 49, \
50, 51, 52, 53, 54, 55, 56, 57, }
#define CONFIG_SYS_NAND_ECCSIZE 512
#define CONFIG_SYS_NAND_ECCBYTES 14
#define CONFIG_SYS_NAND_ECCSTEPS 4
#define CONFIG_SYS_NAND_ECCTOTAL (CONFIG_SYS_NAND_ECCBYTES * \ CONFIG_SYS_NAND_ECCSTEPS)
#define CONFIG_SYS_NAND_PAGE_COUNT (CONFIG_SYS_NAND_BLOCK_SIZE / \ CONFIG_SYS_NAND_PAGE_SIZE)
#define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x80000
i have changed the NAND_PAGE_SIZE base on the nand flash i'm using, but i dont found any ECC infomation from the nand flash datasheet.
Is this error cause by ECC setting not correct ?
What is causing the way of u-boot flashing the kernel image and file system not correct ?
Thanks and Regards
Keldy
