[PATCH 4/4] arm: use correct argument size of special registers

[Tom Rini]

On Wed, May 27, 2020 at 08:04:24PM +0200, Heinrich Schuchardt wrote:

> Compiling with clang on ARMv8 shows errors like:
> 
> ./arch/arm/include/asm/system.h:162:32: note: use constraint modifier "w"
>                 asm volatile("msr sctlr_el1, %0" : : "r" (val) : "cc");
>                                              ^~
>                                              %w0
> 
> These errors are due to using an incorrect size for the variables used
> for writing to and reading from special registers which have 64 bits on
> ARMv8.
> 
> Mask off reserved bits when reading the exception level.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>

Applied to u-boot/master, thanks!

-- 
Tom
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