[U-Boot] [PATCH 1/1] ARMv8: make master CPU checking logic more clear

From: zijun_hu zijun_hu@htc.com
macro branch_if_master checks master CPU via (Aff3 & (Aff2:Aff1:Aff0)) it is simple but a little obscure.
fix by checking Affx fields within MPIDR_EL1 directly.
Signed-off-by: zijun_hu zijun_hu@htc.com --- arch/arm/include/asm/macro.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h index e1916f7..0c8652a 100644 --- a/arch/arm/include/asm/macro.h +++ b/arch/arm/include/asm/macro.h @@ -131,6 +131,7 @@ lr .req x30 /* NOTE: MPIDR handling will be erroneous on multi-cluster machines */ mrs \xreg1, mpidr_el1 lsr \xreg2, \xreg1, #32 + lsl \xreg2, \xreg2, #32 lsl \xreg1, \xreg1, #40 lsr \xreg1, \xreg1, #40 orr \xreg1, \xreg1, \xreg2

On Mon, Sep 25, 2017 at 03:28:50PM +0800, zijun_hu wrote:
From: zijun_hu zijun_hu@htc.com
macro branch_if_master checks master CPU via (Aff3 & (Aff2:Aff1:Aff0)) it is simple but a little obscure.
fix by checking Affx fields within MPIDR_EL1 directly.
Signed-off-by: zijun_hu zijun_hu@htc.com
Applied to u-boot/master, thanks!
participants (2)
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Tom Rini
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zijun_hu