/*******************************************************************************
* This function calls the initialisation routine in the descriptor exported by
* a runtime service. Once a descriptor has been validated, its start & end
* owning entity numbers and the call type are combined to form a unique oen.
* The unique oen is used as an index into the 'rt_svc_descs_indices' array.
* The index of the runtime service descriptor is stored at this index.
******************************************************************************/
void runtime_svc_init(void)
{
int rc = 0;
unsigned int index, start_idx, end_idx;
/* Assert the number of descriptors detected are less than maximum indices */
assert((RT_SVC_DESCS_END >= RT_SVC_DESCS_START) &&
(RT_SVC_DECS_NUM < MAX_RT_SVCS));
/* If no runtime services are implemented then simply bail out */
if (RT_SVC_DECS_NUM == 0)
return;
/* Initialise internal variables to invalid state */
memset(rt_svc_descs_indices, -1, sizeof(rt_svc_descs_indices));
rt_svc_descs = (rt_svc_desc_t *) RT_SVC_DESCS_START;
for (index = 0; index < RT_SVC_DECS_NUM; index++) {
rt_svc_desc_t *service = &rt_svc_descs[index];
/*
* An invalid descriptor is an error condition since it is
* difficult to predict the system behaviour in the absence
* of this service.
*/
rc = validate_rt_svc_desc(service);
if (rc) {
ERROR("Invalid runtime service descriptor %p\n",
(void *) service);
panic();
}
/*
* The runtime service may have separate rt_svc_desc_t
* for its fast smc and yielding smc. Since the service itself
* need to be initialized only once, only one of them will have
* an initialisation routine defined. Call the initialisation
* routine for this runtime service, if it is defined.
*/
if (service->init) {
rc = service->init();
if (rc) {
ERROR("Error initializing runtime service %s\n",
service->name);
continue;
}
}
/*
* Fill the indices corresponding to the start and end
* owning entity numbers with the index of the
* descriptor which will handle the SMCs for this owning
* entity range.
*/
start_idx = get_unique_oen(rt_svc_descs[index].start_oen,
service->call_type);
assert(start_idx < MAX_RT_SVCS);
end_idx = get_unique_oen(rt_svc_descs[index].end_oen,
service->call_type);
assert(end_idx < MAX_RT_SVCS);
for (; start_idx <= end_idx; start_idx++)
rt_svc_descs_indices[start_idx] = index;
}
}
/*******************************************************************************
* This function calls the initialisation routine in the descriptor exported by
* a runtime service. Once a descriptor has been validated, its start & end
* owning entity numbers and the call type are combined to form a unique oen.
* The unique oen is used as an index into the 'rt_svc_descs_indices' array.
* The index of the runtime service descriptor is stored at this index.
******************************************************************************/
void runtime_svc_init(void)
{
int32_t rc = 0;
uint32_t index, start_idx, end_idx;
uint64_t rt_svc_descs_num;
/* If no runtime services are implemented then simply bail out */
rt_svc_descs_num = RT_SVC_DESCS_END - RT_SVC_DESCS_START;
rt_svc_descs_num /= sizeof(rt_svc_desc_t);
if (rt_svc_descs_num == 0)
return;
/* Initialise internal variables to invalid state */
memset(rt_svc_descs_indices, -1, sizeof(rt_svc_descs_indices));
rt_svc_descs = (rt_svc_desc_t *) RT_SVC_DESCS_START;
for (index = 0; index < rt_svc_descs_num; index++) {
/*
* An invalid descriptor is an error condition since it is
* difficult to predict the system behaviour in the absence
* of this service.
*/
rc = validate_rt_svc_desc(&rt_svc_descs[index]);
if (rc) {
ERROR("Invalid runtime service descriptor 0x%lx (%s)\n",
(uintptr_t) &rt_svc_descs[index],
rt_svc_descs[index].name);
goto error;
}
/*
* The runtime service may have seperate rt_svc_desc_t
* for its fast smc and standard smc. Since the service itself
* need to be initialized only once, only one of them will have
* an initialisation routine defined. Call the initialisation
* routine for this runtime service, if it is defined.
*/
if (rt_svc_descs[index].init) {
rc = rt_svc_descs[index].init();
if (rc) {
ERROR("Error initializing runtime service %s\n",
rt_svc_descs[index].name);
continue;
}
}
/*
* Fill the indices corresponding to the start and end
* owning entity numbers with the index of the
* descriptor which will handle the SMCs for this owning
* entity range.
*/
start_idx = get_unique_oen(rt_svc_descs[index].start_oen,
rt_svc_descs[index].call_type);
end_idx = get_unique_oen(rt_svc_descs[index].end_oen,
rt_svc_descs[index].call_type);
for (; start_idx <= end_idx; start_idx++)
rt_svc_descs_indices[start_idx] = index;
}
return;
error:
panic();
}