/*******************************************************************************
* TSP fast smc handler. The secure monitor jumps to this function by
* doing the ERET after populating X0-X7 registers. The arguments are received
* in the function arguments in order. Once the service is rendered, this
* function returns to Secure Monitor by raising SMC
******************************************************************************/
tsp_args *tsp_fast_smc_handler(uint64_t func,
uint64_t arg1,
uint64_t arg2,
uint64_t arg3,
uint64_t arg4,
uint64_t arg5,
uint64_t arg6,
uint64_t arg7)
{
uint64_t results[2];
uint64_t service_args[2];
uint64_t mpidr = read_mpidr();
uint32_t linear_id = platform_get_core_pos(mpidr);
/* Update this cpu's statistics */
tsp_stats[linear_id].smc_count++;
tsp_stats[linear_id].eret_count++;
printf("SP: cpu 0x%x received fast smc 0x%x\n", read_mpidr(), func);
INFO("cpu 0x%x: %d smcs, %d erets\n", mpidr,
tsp_stats[linear_id].smc_count,
tsp_stats[linear_id].eret_count);
/* Render secure services and obtain results here */
results[0] = arg1;
results[1] = arg2;
/*
* Request a service back from dispatcher/secure monitor. This call
* return and thereafter resume exectuion
*/
tsp_get_magic(service_args);
/* Determine the function to perform based on the function ID */
switch (func) {
case TSP_FID_ADD:
results[0] += service_args[0];
results[1] += service_args[1];
break;
case TSP_FID_SUB:
results[0] -= service_args[0];
results[1] -= service_args[1];
break;
case TSP_FID_MUL:
results[0] *= service_args[0];
results[1] *= service_args[1];
break;
case TSP_FID_DIV:
results[0] /= service_args[0] ? service_args[0] : 1;
results[1] /= service_args[1] ? service_args[1] : 1;
break;
default:
break;
}
return set_smc_args(func,
results[0],
results[1],
0, 0, 0, 0, 0);
}
/*******************************************************************************
* TSP fast smc handler. The secure monitor jumps to this function by
* doing the ERET after populating X0-X7 registers. The arguments are received
* in the function arguments in order. Once the service is rendered, this
* function returns to Secure Monitor by raising SMC.
******************************************************************************/
tsp_args_t *tsp_smc_handler(uint64_t func,
uint64_t arg1,
uint64_t arg2,
uint64_t arg3,
uint64_t arg4,
uint64_t arg5,
uint64_t arg6,
uint64_t arg7)
{
uint64_t results[2];
uint64_t service_args[2];
uint32_t linear_id = plat_my_core_pos();
/* Update this cpu's statistics */
tsp_stats[linear_id].smc_count++;
tsp_stats[linear_id].eret_count++;
INFO("TSP: cpu 0x%lx received %s smc 0x%lx\n", read_mpidr(),
((func >> 31) & 1) == 1 ? "fast" : "standard",
func);
INFO("TSP: cpu 0x%lx: %d smcs, %d erets\n", read_mpidr(),
tsp_stats[linear_id].smc_count,
tsp_stats[linear_id].eret_count);
/* Render secure services and obtain results here */
results[0] = arg1;
results[1] = arg2;
/*
* Request a service back from dispatcher/secure monitor. This call
* return and thereafter resume exectuion
*/
tsp_get_magic(service_args);
/* Determine the function to perform based on the function ID */
switch (TSP_BARE_FID(func)) {
case TSP_ADD:
results[0] += service_args[0];
results[1] += service_args[1];
break;
case TSP_SUB:
results[0] -= service_args[0];
results[1] -= service_args[1];
break;
case TSP_MUL:
results[0] *= service_args[0];
results[1] *= service_args[1];
break;
case TSP_DIV:
results[0] /= service_args[0] ? service_args[0] : 1;
results[1] /= service_args[1] ? service_args[1] : 1;
break;
default:
break;
}
return set_smc_args(func, 0,
results[0],
results[1],
0, 0, 0, 0);
}
