Lucian Paul-Trifu | 5ee4f4e | 2022-06-22 18:45:30 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2022, Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <stdbool.h> |
| 8 | #include <stddef.h> |
| 9 | |
| 10 | #include <drivers/arm/smmu_v3.h> |
| 11 | #include <lib/utils_def.h> |
| 12 | #include <plat/arm/common/arm_config.h> |
| 13 | #include <plat/common/platform.h> |
| 14 | |
| 15 | #include <platform_def.h> |
| 16 | |
| 17 | /** |
| 18 | * Array mentioning number of SMMUs supported by FVP |
| 19 | */ |
| 20 | static const uintptr_t fvp_smmus[] = { |
| 21 | PLAT_FVP_SMMUV3_BASE, |
| 22 | }; |
| 23 | |
| 24 | bool plat_has_non_host_platforms(void) |
| 25 | { |
| 26 | /* FVP base platforms typically have GPU, as per FVP Reference guide */ |
| 27 | return true; |
| 28 | } |
| 29 | |
| 30 | bool plat_has_unmanaged_dma_peripherals(void) |
| 31 | { |
| 32 | /* |
| 33 | * FVP Reference guide does not show devices that are described as |
| 34 | * DMA-capable but not managed by an SMMU in the FVP documentation. |
| 35 | * However, the SMMU seems to have only been introduced in the RevC |
| 36 | * revision. |
| 37 | */ |
| 38 | return (arm_config.flags & ARM_CONFIG_FVP_HAS_SMMUV3) == 0; |
| 39 | } |
| 40 | |
| 41 | unsigned int plat_get_total_smmus(void) |
| 42 | { |
| 43 | if ((arm_config.flags & ARM_CONFIG_FVP_HAS_SMMUV3) != 0U) { |
| 44 | return ARRAY_SIZE(fvp_smmus); |
| 45 | } else { |
| 46 | return 0; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | void plat_enumerate_smmus(const uintptr_t **smmus_out, |
| 51 | size_t *smmu_count_out) |
| 52 | { |
| 53 | if ((arm_config.flags & ARM_CONFIG_FVP_HAS_SMMUV3) != 0U) { |
| 54 | *smmus_out = fvp_smmus; |
| 55 | *smmu_count_out = ARRAY_SIZE(fvp_smmus); |
| 56 | } else { |
| 57 | *smmus_out = NULL; |
| 58 | *smmu_count_out = 0; |
| 59 | } |
| 60 | } |
johpow01 | baa3e6c | 2022-03-11 17:50:58 -0600 | [diff] [blame] | 61 | |
| 62 | /* DRTM DMA Protection Features */ |
| 63 | static const plat_drtm_dma_prot_features_t dma_prot_features = { |
| 64 | .max_num_mem_prot_regions = 0, /* No protection regions are present */ |
| 65 | .dma_protection_support = 0x1 /* Complete DMA protection only */ |
| 66 | }; |
| 67 | |
| 68 | const plat_drtm_dma_prot_features_t *plat_drtm_get_dma_prot_features(void) |
| 69 | { |
| 70 | return &dma_prot_features; |
| 71 | } |
| 72 | |
| 73 | uint64_t plat_drtm_dma_prot_get_max_table_bytes(void) |
| 74 | { |
| 75 | return 0U; |
| 76 | } |