/* * Copyright (c) 2022, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #include #include #include #include #define LP_PARTITION_ID 0xC001 #define LP_UUID {0x47a3bf57, 0xe98e43ad, 0xb7db524f, 0x1588f4e3} /* Our Logical SP currently only supports receipt of direct messaging. */ #define PARTITION_PROPERTIES FFA_PARTITION_DIRECT_REQ_RECV static int32_t sp_init(void) { INFO("LSP: Init function called.\n"); return 0; } static uint64_t handle_ffa_direct_request(uint32_t smc_fid, bool secure_origin, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4, void *cookie, void *handle, uint64_t flags) { uint64_t ret; /* Determine if we have a 64 or 32 direct request. */ if (smc_fid == FFA_MSG_SEND_DIRECT_REQ_SMC32) { ret = FFA_MSG_SEND_DIRECT_RESP_SMC32; } else if (smc_fid == FFA_MSG_SEND_DIRECT_REQ_SMC64) { ret = FFA_MSG_SEND_DIRECT_RESP_SMC64; } else { panic(); /* Unknown SMC. */ } /* * Handle the incoming request. For testing purposes we echo the * incoming message. */ INFO("Logical Partition: Received Direct Request from %s world!\n", secure_origin ? "Secure" : "Normal"); /* * Logical SP's must always send a direct response so we can populate * our response directly. */ SMC_RET8(handle, ret, 0, 0, x4, 0, 0, 0, 0); } /* Register logical partition */ DECLARE_LOGICAL_PARTITION( my_logical_partition, sp_init, /* Init Function */ LP_PARTITION_ID, /* FF-A Partition ID */ LP_UUID, /* UUID */ PARTITION_PROPERTIES, /* Partition Properties. */ handle_ffa_direct_request /* Callback for direct requests. */ );