[boot-wrapper 3/7] aarch64: Remove TSCXT bit set from SCTLR_EL2_RESET

[Andre Przywara]

On Thu,  6 Jun 2024 14:36:24 +0100
Luca Fancellu <luca.fancellu at arm.com> wrote:

> From the specification SCTLR_EL2.TSCXT is RES1 only "When
> FEAT_CSV2_2 is not implemented, FEAT_CSV2_1p2 is not
> implemented, HCR_EL2.E2H == 1 and HCR_EL2.TGE == 1", so
> given that HCR_EL2.E2H is set by bootwrapper before to a
> value of zero, the condition above can't happen and from
> the specification the bit is RES0.
> 
> Fix the macro removing the bit.
> 
> Signed-off-by: Luca Fancellu <luca.fancellu at arm.com>

Reviewed-by: Andre Przywara <andre.przywara at arm.com>

Thanks,
Andre

> ---
>  arch/aarch64/include/asm/cpu.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/aarch64/include/asm/cpu.h b/arch/aarch64/include/asm/cpu.h
> index 124ef916ddfc..846b89f8405d 100644
> --- a/arch/aarch64/include/asm/cpu.h
> +++ b/arch/aarch64/include/asm/cpu.h
> @@ -30,8 +30,8 @@
>  	 BIT(11) | BIT(5) | BIT(4))
>  
>  #define SCTLR_EL2_RES1							\
> -	(BIT(29) | BIT(28) | BIT(23) | BIT(22) | BIT(20) | BIT(18) |	\
> -	 BIT(16) | BIT(11) | BIT(5) | BIT(4))
> +	(BIT(29) | BIT(28) | BIT(23) | BIT(22) | BIT(18) | BIT(16) |	\
> +	 BIT(11) | BIT(5) | BIT(4))
>  
>  #define SCTLR_EL1_RES1							\
>  	(BIT(29) | BIT(28) | BIT(23) | BIT(22) | BIT(20) | BIT(11) |	\