On Mon, Apr 16, 2018 at 10:13:22AM +0200, Patrick Delaunay wrote:
Save and use the 3rd parameter of PSCI CPU_ON request: context_id.
The context_id parameter is only meaningful to the caller. U-Boot PSCI preserves a copy of the value passed in this parameter. Following wakeup from a powerdown state, U-BOOT PSCI places this value in R0 when it first enters the OS.
NB: this context id is not (yet?) used by Linux but it is mandatory to be PSCI compliant.
update armv7 psci functions:
psci_save_target_pc(): keep for backward compatibility with current platform (only save PC and force context id to 0) => should be removed when all platform migrate to the new API
psci_save(): new API to use by ARMv7 platform with PSCI, save pc (= entry_point_address) and context_id
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com Reviewed-by: Stephen Warren swarren@nvidia.com Reviewed-by: Masahiro Yamada yamada.masahiro@socionext.com
Applied to u-boot/master, thanks!