[U-Boot] [PATCH 1/4] ARM: Add ARMv7-M support

[Tom Rini]

On Sun, Mar 01, 2015 at 12:44:39PM +0100, Kamil Lulko wrote:

> Signed-off-by: Kamil Lulko <rev13 at wp.pl>
[snip]
> diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S
[snip]
> @@ -66,15 +69,30 @@ ENTRY(_main)
>  #else
>  	ldr	sp, =(CONFIG_SYS_INIT_SP_ADDR)
>  #endif
> +#if defined(CONFIG_CPU_V7M)	/* v7M forbids using SP as BIC destination */
> +	mov	r3, sp
> +	bic	r3, r3, #7
> +	mov	sp, r3
> +#else
>  	bic	sp, sp, #7	/* 8-byte alignment for ABI compliance */
> +#endif

There's 4 places where this change comes in.  Albert, what do you think
about always just doing this in 3 instructions with a comment in the
first instance about v7-M support?

-- 
Tom
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