| Marc Bonnici | 6a0788b | 2021-12-16 18:31:02 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2022, Arm Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <platform_def.h> |
| 8 | |
| 9 | /* |
| 10 | * On the FVP platform when using the EL3 SPMC implementation allocate the |
| 11 | * datastore for tracking shared memory descriptors in the TZC DRAM section |
| 12 | * to ensure sufficient storage can be allocated. |
| 13 | * Provide an implementation of the accessor method to allow the datastore |
| 14 | * details to be retrieved by the SPMC. |
| 15 | * The SPMC will take care of initializing the memory region. |
| 16 | */ |
| 17 | |
| 18 | #define PLAT_SPMC_SHMEM_DATASTORE_SIZE 512 * 1024 |
| 19 | |
| 20 | __section("arm_el3_tzc_dram") static uint8_t |
| 21 | plat_spmc_shmem_datastore[PLAT_SPMC_SHMEM_DATASTORE_SIZE]; |
| 22 | |
| 23 | int plat_spmc_shmem_datastore_get(uint8_t **datastore, size_t *size) |
| 24 | { |
| 25 | *datastore = plat_spmc_shmem_datastore; |
| 26 | *size = PLAT_SPMC_SHMEM_DATASTORE_SIZE; |
| 27 | return 0; |
| 28 | } |