On 18 August 2015 at 06:26, Sergey Temerkhanov s.temerkhanov@gmail.com wrote:
This commit adds functions issuing calls to secure monitor or hypervisore. This allows using services such as Power State Coordination Interface (PSCI) provided by firmware, e.g. ARM Trusted Firmware (ATF)
The SMC call can destroy all registers declared temporary by the calling conventions. The clobber list is "x0..x17" because of this
Signed-off-by: Sergey Temerkhanov s.temerkhanov@gmail.com Signed-off-by: Corey Minyard cminyard@mvista.com Signed-off-by: Radha Mohan Chintakuntla rchintakuntla@cavium.com
Changes in v4:
- Document FW calls
Changes in v3:
- Fixed clobber lists (thanks to Corey)
Changes in v2: None
arch/arm/cpu/armv8/Makefile | 1 + arch/arm/cpu/armv8/fwcall.c | 75 +++++++++++++++++++++++++++++++++++++++++++ arch/arm/include/asm/system.h | 21 ++++++++++++ 3 files changed, 97 insertions(+) create mode 100644 arch/arm/cpu/armv8/fwcall.c
Reviewed-by: Simon Glass sjg@chromium.org