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On 08/29/2013 02:14 PM, Gupta, Pekon wrote:

Hi,

Need a help in debugging the spl boot via NAND.

NAND Device is flashed with valid 'MLO' and 'u-boot.img'. Also it boots via MMC/SD perfectly using same images. But is NAND-SPL boot gets stuck under following condition..

CONFIG_SPL_OS_BOOT (falcon mode) is enable by default for am33xx.. #ifdef CONFIG_SPL_OS_BOOT if(valid_linux_image_header) loads_and_boots_linux else U-boot_hangs #else shows_serial_terminal with 'ccccc'

#endif

I have been debugging this flow by analyzing code in $U-BOOT/common/spl/spl.c $U-BOOT/common/spl/spl_nand.c: spl_nand_load_image() But, I'm getting stuck & lost .. Any pointers in this regard would be helpful.

So, when I was testing out falcon mode with NAND on am335x, what I found was that the kernel was up and dying, unless I was using a much older one that had NAND support in it, if I threw in earlyprintk.

Also, I'm not seeing following CONFIGS being used anywhere.. #define CONFIG_SYS_NAND_U_BOOT_START #define CONFIG_SYS_NAND_U_BOOT_SIZE #define CONFIG_SYS_NAND_U_BOOT_DST Have these been deprecated ?

They aren't used by CONFIG_SPL_FRAMEWORK drivers, no.

- -- Tom