[PATCH 12/17] ARM: fix magic for bootloader in BE8

[Nicolas Pitre]

On Fri, 8 Feb 2013, Ben Dooks wrote:

> If the boot-loader is running little endian and the kernel is compiled
> big endian then it will not verify the magic number of the front of the
> kernel.
> 
> Note, do we need to also reverse the two values after the magic, or are
> they used later on in the kernel decompressor?

Those value instances are not used by the code.  So for consistency they 
would have to be reversed, yes.  Given those are variable and determined 
by the linker, I don't know how you could manage it.

> Signed-off-by: Ben Dooks <ben.dooks at codethink.co.uk>
> ---
>  arch/arm/boot/compressed/head.S |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
> index 39940a7..b6c7ec8 100644
> --- a/arch/arm/boot/compressed/head.S
> +++ b/arch/arm/boot/compressed/head.S
> @@ -129,7 +129,11 @@ start:
>   THUMB(		adr	r12, BSYM(1f)	)
>   THUMB(		bx	r12		)
>  
> +#ifdef CONFIG_CPU_BE8_BOOT_LE
> +		.word	0x18286f01
> +#else
>  		.word	0x016f2818		@ Magic numbers to help the loader
> +#endif
>  		.word	start			@ absolute load/run zImage address
>  		.word	_edata			@ zImage end address
>   THUMB(		.thumb			)
> -- 
> 1.7.10.4
> 
> 
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