[SeaBIOS] WD Elements hang SeaBIOS at boot with "call16 with invalid stack"

[Tobias Diedrich]

Wcall16 with invalid stack: eax=dfbf3e62 edx=0 func=0x000f9563 esp=dfbf3e50

.text._farcall16 0x9563 : { *(.text._farcall16) }

On Wed, Dec 23, 2015 at 6:51 PM, Kevin O'Connor <kevin at koconnor.net> wrote:

> On Wed, Dec 23, 2015 at 04:27:55PM +0100, Tobias Diedrich wrote:
> > And with verbose logging (level 8).
> >
> > [...]
> > Wcall16 with invalid stack
>
> Strange.  Can you report the output with the patch below?
>
> -Kevin
>
>
> --- a/src/stacks.c
> +++ b/src/stacks.c
> @@ -274,7 +274,8 @@ call16(u32 eax, u32 edx, void *func)
>  {
>      ASSERT32FLAT();
>      if (getesp() > MAIN_STACK_MAX)
> -        panic("call16 with invalid stack\n");
> +        panic("call16 with invalid stack eax=%x edx=%x func=%p esp=%x\n"
> +              , eax, edx, func, getesp());
>      if (CONFIG_CALL32_SMM && Call16Data.method == C16_SMM)
>          return call16_smm(eax, edx, func);
>
>
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