[U-Boot] SPL debug messages (All of them!) - how?

[Nikolai Zhubr]

Hi again,

23.12.2018 0:06, I wrote:
> I'm struggling trying to figure how to totally enable all of those nice
> debug() statements so as to debug a problem in SPL. The CONFIG_LOGLEVEL
> is set to 7, have also tried to all KCFLAGS=-DDEBUG but apparently it
> has all no effect for SPL. So I'm asking for advice (and I'd definitely
> like to not selectively prepend "#define DEBUG" all over the place)

Figured hard-hacking 1 into the #define debug() in log.h does what I 
wanted. Probably not exactly elegant, but at least it lets me see the 
messages:

U-Boot SPL 2019.01-rc2 (Dec 23 2018 - 00:26:45 +0300)
CPU: 912000000Hz, AXI/AHB/APB: 3/2/2
DRAM: 1024 MiB
 >>SPL: board_init_r()
Trying to boot from NAND
spl: nand - using hw ecc
mkimage signature not found - ih_magic = 0
Jumping to U-Boot
SPL malloc() used 0x0 bytes (0 KB)
loaded - jumping to U-Boot...
image entry point: 0x4a000000

It looks like SPL loads 0x0 bytes of u-boot and runs it! Hmm, 
interesting. Its a good start already. Now just need to insert some more 
debugging messages...


Thank you!

Regards,
Nikolai

> Background: I'm trying to perform direct nand install on an A20
> olinuxino board. That is, dismissing messy boot0 and boot1 in nand.
> Currently, I've succeeded to get a good greeting from u-boot SPL,
> declaring that it is going to proceed to boot from nand, but then all
> stops forever:
>
> U-Boot SPL 2019.01-rc2 (Dec 22 2018 - 22:15:16 +0300)
> CPU: 912000000Hz, AXI/AHB/APB: 3/2/2
> DRAM: 1024 MiB
> Trying to boot from NAND
>
> I'd like to try to find the reason for this and certainly having all
> those debug messages could help somewhat.
>
>
> Thank you!
>
> Regards,
> Nikolai
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