[U-Boot] need help for SPL-NAND boot

[U-Boot] need help for SPL-NAND boot

[Tom Rini]

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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
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