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| author | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2014-02-06 10:36:15 +0000 |
|---|---|---|
| committer | Dan Handley <dan.handley@arm.com> | 2014-02-17 18:51:44 +0000 |
| commit | caa84939a4d8b1189dea8619ccc57bdb3026b125 (patch) | |
| tree | a7eb5e977cc9971c051ef469877fc3d00cba24ad /common/psci/psci_private.h | |
| parent | 07f4e078b6871e5c74f6cb38f2726a2cfcb2b746 (diff) | |
Add support for handling runtime service requests
This patch uses the reworked exception handling support to handle
runtime service requests through SMCs following the SMC calling
convention. This is a giant commit since all the changes are
inter-related. It does the following:
1. Replace the old exception handling mechanism with the new one
2. Enforce that SP_EL0 is used C runtime stacks.
3. Ensures that the cold and warm boot paths use the 'cpu_context'
structure to program an ERET into the next lower EL.
4. Ensures that SP_EL3 always points to the next 'cpu_context'
structure prior to an ERET into the next lower EL
5. Introduces a PSCI SMC handler which completes the use of PSCI as a
runtime service
Change-Id: I661797f834c0803d2c674d20f504df1b04c2b852
Co-authored-by: Achin Gupta <achin.gupta@arm.com>
Diffstat (limited to 'common/psci/psci_private.h')
| -rw-r--r-- | common/psci/psci_private.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/common/psci/psci_private.h b/common/psci/psci_private.h index de9c2917..3d7ae749 100644 --- a/common/psci/psci_private.h +++ b/common/psci/psci_private.h @@ -151,6 +151,16 @@ extern int psci_afflvl_suspend(unsigned long, int, int); extern unsigned int psci_afflvl_suspend_finish(unsigned long, int, int); + +/* Private exported functions from psci_main.c */ +extern uint64_t psci_smc_handler(uint32_t smc_fid, + uint64_t x1, + uint64_t x2, + uint64_t x3, + uint64_t x4, + void *cookie, + void *handle, + uint64_t flags); #endif /*__ASSEMBLY__*/ #endif /* __PSCI_PRIVATE_H__ */ |