| Message ID | 20190405083013.5473-2-heiko@sntech.de |
|---|---|
| State | Changes Requested |
| Delegated to: | Kever Yang |
| Headers | show |
| Series | arm-trusted-firmware support for rk3288 | expand |
On 05/04/2019 10:30, Heiko Stuebner wrote: > Function to get the contents of the mpidr register, similar to > its arm64 counterpart. > > Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Matthias Brugger <mbrugger@suse.com> > --- > arch/arm/include/asm/system.h | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h > index aed2e3c51e..b5332f4347 100644 > --- a/arch/arm/include/asm/system.h > +++ b/arch/arm/include/asm/system.h > @@ -364,6 +364,15 @@ static inline int is_hyp(void) > #endif > } > > +static inline unsigned long read_mpidr(void) > +{ > + unsigned long val; > + > + asm volatile ("mrc p15, 0, %0, c0, c0, 5" : "=r" (val)); > + > + return val; > +} > + > static inline unsigned int get_cr(void) > { > unsigned int val; >
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index aed2e3c51e..b5332f4347 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -364,6 +364,15 @@ static inline int is_hyp(void) #endif } +static inline unsigned long read_mpidr(void) +{ + unsigned long val; + + asm volatile ("mrc p15, 0, %0, c0, c0, 5" : "=r" (val)); + + return val; +} + static inline unsigned int get_cr(void) { unsigned int val;
Function to get the contents of the mpidr register, similar to its arm64 counterpart. Signed-off-by: Heiko Stuebner <heiko@sntech.de> --- arch/arm/include/asm/system.h | 9 +++++++++ 1 file changed, 9 insertions(+)