SPM: Support blocking calls
Note that the arguments passed during the SMC call don't comply with the
SPCI specifications. This will be fixed in following patches, but it is
needed to implement a few more SPCI SMCs to be able to do it. The
current code allows us to start testing it.
Change-Id: Ief0e75d072b311737fcdb0c6a60ba5b7406a9ee5
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/services/std_svc/spm/spm_private.h b/services/std_svc/spm/spm_private.h
index 9a4e82b..a8234c3 100644
--- a/services/std_svc/spm/spm_private.h
+++ b/services/std_svc/spm/spm_private.h
@@ -61,8 +61,13 @@
/* Base and size of the shared SPM<->SP buffer */
uintptr_t spm_sp_buffer_base;
size_t spm_sp_buffer_size;
+ spinlock_t spm_sp_buffer_lock;
} sp_context_t;
+/* Functions used to enter/exit a Secure Partition synchronously */
+uint64_t spm_sp_synchronous_entry(sp_context_t *sp_ctx);
+__dead2 void spm_sp_synchronous_exit(uint64_t rc);
+
/* Assembly helpers */
uint64_t spm_secure_partition_enter(uint64_t *c_rt_ctx);
void __dead2 spm_secure_partition_exit(uint64_t c_rt_ctx, uint64_t ret);
@@ -70,6 +75,11 @@
/* Secure Partition setup */
void spm_sp_setup(sp_context_t *sp_ctx);
+/* Secure Partition state management helpers */
+void sp_state_set(sp_context_t *sp_ptr, sp_state_t state);
+void sp_state_wait_switch(sp_context_t *sp_ptr, sp_state_t from, sp_state_t to);
+int sp_state_try_switch(sp_context_t *sp_ptr, sp_state_t from, sp_state_t to);
+
/* Functions related to the translation tables management */
xlat_ctx_t *spm_sp_xlat_context_alloc(void);
void sp_map_memory_regions(sp_context_t *sp_ctx);