On Tue, May 24, 2016 at 5:58 PM, Marc Zyngier marc.zyngier@arm.com wrote:
On 23/05/16 13:41, Chen-Yu Tsai wrote:
Some common PSCI functions are written in assembly, but it should be possible to use them from C code.
Add function declarations for C code to consume.
Signed-off-by: Chen-Yu Tsai wens@csie.org
arch/arm/include/asm/psci.h | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h index 128a606444fe..5db33562a299 100644 --- a/arch/arm/include/asm/psci.h +++ b/arch/arm/include/asm/psci.h @@ -33,6 +33,14 @@ #define ARM_PSCI_RET_DENIED (-3)
#ifndef __ASSEMBLY__ +#include <asm/types.h> +#include <linux/compiler.h>
+void __section("._secure.text") psci_cpu_entry(void); +u32 __section("._secure.text") psci_get_cpu_id(void); +u32 __section("._secure.text") psci_get_cpu_stack_top(int cpu); +void __section("._secure.text") psci_cpu_off_common(void);
I may be wrong, but I don't think the section matters for prototypes. It is only at the location where the code is actually generated that it is actually useful.
You're right. Dropping the section attributes here.
ChenYu