Hello Luca,

On Mon, 29 Dec 2014 16:10:53 +0100, Luca Ellero
<luca.ell...@brickedbrain.com> wrote:
> After relocation, exception vectors still point to the old code (not 
> relocated).
> This patch fixes them.
> 
> Signed-off-by: Luca Ellero <luca.ell...@brickedbrain.com>
> ---
>  arch/arm/lib/relocate.S |   15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/arch/arm/lib/relocate.S b/arch/arm/lib/relocate.S
> index 92f5314..4186344 100644
> --- a/arch/arm/lib/relocate.S
> +++ b/arch/arm/lib/relocate.S
> @@ -76,6 +76,21 @@ copy_loop:
>       blo     copy_loop
>  
>       /*
> +      * fix exception vectors
> +      */
> +     ldr r2, =_undefined_instruction
> +     ldr r3, =_fiq
> +     add     r2, r2, r4
> +     add     r3, r3, r4
> +fix_exceptions:
> +     ldr r0, [r2]
> +     add     r0, r0, r4
> +     str     r0, [r2]
> +     cmp r2,r3
> +     add r2, #4
> +     blo fix_exceptions
> +
> +     /*
>        * fix .rel.dyn relocations
>        */
>       ldr     r2, =__rel_dyn_start    /* r2 <- SRC &__rel_dyn_start */
> -- 
> 1.7.10.4
> 

There is already a mechanism to relocate vectors (do a git grep for
'relocate_vectors' which takes into account various ISA and SoC cases.

Can you describe the use case which you are encountering?

Amicalement,
-- 
Albert.
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot

Reply via email to