[U-Boot] [PATCH v2 22/22] omap: spl: add more debug traces

[Aneesh V]

Dear Wolfgang, Heiko,

On Monday 13 June 2011 07:29 PM, Aneesh V wrote:
> Dear Wolfgang,
[snip ...]
> But this didn't work. It crashes at the first printf(). The reason is
> init_baudrate() needs global data and global data is initialized in
> board_init_f(). Further, we can not move global data initialization
> earlier because for global data we reuse low level stack used by
> lowlevel_init().
>
> gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);

On second thoughts I realize that the stack in internal RAM is still in
use in board_init_f(). So, how does this work at all? The global data
and the stack seems to be overlapping!

Please note the register dump after the above instruction. Note that
R8(gd) and R13(sp) are very close.

N _  R0          0  R8   4030DF80  SP> 12345678
Z Z  R1         0A  R9   12345678  -04 80E80078
C C  R2   4030DED4  R10  40304350  FP> D78772CA
V _  R3       5555  R11  0002FE40  +04 4049A39E
I I  R4          0  R12  80E80068  +08 F5A73CF4
F F  R5         10  R13  4030DF78  +0C 7B317D39
T _  R6   12345678  R14  80E80078  +10 ED3CFCF0
J _  R7   12345678  PC   80E80880  +14 FEECEC6A
svc  SPSR        0  CPSR 600001D3  +18 6DB22EB2

Am I missing something?

best regards,
Aneesh