[U-Boot] [PATCH] Set IVPR to kenrel entry point in second core boot page

[Kumar Gala]

On Dec 3, 2008, at 9:08 AM, Haiying Wang wrote:

> Assuming the OSes exception vectors start from the base of kernel  
> address, and
> the kernel physical starting address can be relocated to an non-zero  
> address.
> This patch enables the second core to have a valid IVPR for debugger  
> before
> kernel setting IVPR in CAMP mode. Otherwise, IVPR is 0x0 and it is  
> not a valid
> value for second core which runs kernel at different physical  
> address other
> than 0x0.
>
> Signed-off-by: Haiying Wang <Haiying.Wang at freescale.com>
> ---
> cpu/mpc85xx/release.S |    1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/cpu/mpc85xx/release.S b/cpu/mpc85xx/release.S
> index 7c3e8a1..d35e4ee 100644
> --- a/cpu/mpc85xx/release.S
> +++ b/cpu/mpc85xx/release.S
> @@ -157,6 +157,7 @@ __secondary_start_page:
> 	mfspr	r0,SPRN_PIR
> 	stw	r0,ENTRY_PIR(r10)
>
> +	mtspr	IVPR,r12
> /*
>  * Coming here, we know the cpu has one TLB mapping in TLB1[0]
>  * which maps 0xfffff000-0xffffffff one-to-one.  We set up a
> -- 
> 1.6.0.2

Acked-by: Kumar Gala <galak at kernel.crashing.org>

- kq