1*e9a457f4SYeoreum Yun /* 2*e9a457f4SYeoreum Yun * Copyright (c) 2022-2025, Arm Limited and Contributors. All rights reserved. 3*e9a457f4SYeoreum Yun * 4*e9a457f4SYeoreum Yun * SPDX-License-Identifier: BSD-3-Clause 5*e9a457f4SYeoreum Yun */ 6*e9a457f4SYeoreum Yun 7*e9a457f4SYeoreum Yun #include <lib/xlat_tables/xlat_tables_defs.h> 8*e9a457f4SYeoreum Yun #include <services/el3_spmc_ffa_memory.h> 9*e9a457f4SYeoreum Yun 10*e9a457f4SYeoreum Yun #include <platform_def.h> 11*e9a457f4SYeoreum Yun 12*e9a457f4SYeoreum Yun __section(".arm_el3_tzc_dram") __unused static uint8_t plat_spmc_shmem_datastore[PAGE_SIZE]; 13*e9a457f4SYeoreum Yun 14*e9a457f4SYeoreum Yun int plat_spmc_shmem_datastore_get(uint8_t **datastore, size_t *size) 15*e9a457f4SYeoreum Yun { 16*e9a457f4SYeoreum Yun *datastore = (uint8_t *)plat_spmc_shmem_datastore; 17*e9a457f4SYeoreum Yun *size = PAGE_SIZE; 18*e9a457f4SYeoreum Yun return 0; 19*e9a457f4SYeoreum Yun } 20*e9a457f4SYeoreum Yun 21*e9a457f4SYeoreum Yun /* 22*e9a457f4SYeoreum Yun * Add dummy implementations of memory management related platform hooks. 23*e9a457f4SYeoreum Yun * These can be used to implement platform specific functionality to support 24*e9a457f4SYeoreum Yun * a memory sharing/lending operation. 25*e9a457f4SYeoreum Yun * 26*e9a457f4SYeoreum Yun * Note: The hooks must be located as part of the initial share request and 27*e9a457f4SYeoreum Yun * final reclaim to prevent order dependencies with operations that may take 28*e9a457f4SYeoreum Yun * place in the normal world without visibility of the SPMC. 29*e9a457f4SYeoreum Yun */ 30*e9a457f4SYeoreum Yun int plat_spmc_shmem_begin(struct ffa_mtd *desc) 31*e9a457f4SYeoreum Yun { 32*e9a457f4SYeoreum Yun return 0; 33*e9a457f4SYeoreum Yun } 34*e9a457f4SYeoreum Yun int plat_spmc_shmem_reclaim(struct ffa_mtd *desc) 35*e9a457f4SYeoreum Yun { 36*e9a457f4SYeoreum Yun return 0; 37*e9a457f4SYeoreum Yun } 38*e9a457f4SYeoreum Yun 39*e9a457f4SYeoreum Yun int plat_spmd_handle_group0_interrupt(uint32_t intid) 40*e9a457f4SYeoreum Yun { 41*e9a457f4SYeoreum Yun /* 42*e9a457f4SYeoreum Yun * As of now, there are no sources of Group0 secure interrupt enabled 43*e9a457f4SYeoreum Yun * for Juno. 44*e9a457f4SYeoreum Yun */ 45*e9a457f4SYeoreum Yun (void)intid; 46*e9a457f4SYeoreum Yun return -1; 47*e9a457f4SYeoreum Yun } 48*e9a457f4SYeoreum Yun 49