mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
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2a1cdee4f5
Added platform hooks to retrieve DRTM features and address map. Additionally, implemented these hooks for the FVP platform. Signed-off-by: John Powell <john.powell@arm.com> Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com> Change-Id: I5621cc9807ffff8139ae8876250147f7b2c76759
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
/*
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* Copyright (c) 2022, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <stdbool.h>
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#include <stddef.h>
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#include <drivers/arm/smmu_v3.h>
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#include <lib/utils_def.h>
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#include <plat/arm/common/arm_config.h>
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#include <plat/common/platform.h>
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#include <platform_def.h>
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/**
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* Array mentioning number of SMMUs supported by FVP
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*/
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static const uintptr_t fvp_smmus[] = {
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PLAT_FVP_SMMUV3_BASE,
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};
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bool plat_has_non_host_platforms(void)
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{
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/* FVP base platforms typically have GPU, as per FVP Reference guide */
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return true;
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}
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bool plat_has_unmanaged_dma_peripherals(void)
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{
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/*
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* FVP Reference guide does not show devices that are described as
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* DMA-capable but not managed by an SMMU in the FVP documentation.
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* However, the SMMU seems to have only been introduced in the RevC
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* revision.
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*/
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return (arm_config.flags & ARM_CONFIG_FVP_HAS_SMMUV3) == 0;
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}
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unsigned int plat_get_total_smmus(void)
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{
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if ((arm_config.flags & ARM_CONFIG_FVP_HAS_SMMUV3) != 0U) {
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return ARRAY_SIZE(fvp_smmus);
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} else {
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return 0;
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}
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}
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void plat_enumerate_smmus(const uintptr_t **smmus_out,
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size_t *smmu_count_out)
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{
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if ((arm_config.flags & ARM_CONFIG_FVP_HAS_SMMUV3) != 0U) {
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*smmus_out = fvp_smmus;
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*smmu_count_out = ARRAY_SIZE(fvp_smmus);
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} else {
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*smmus_out = NULL;
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*smmu_count_out = 0;
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}
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}
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/* DRTM DMA Protection Features */
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static const plat_drtm_dma_prot_features_t dma_prot_features = {
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.max_num_mem_prot_regions = 0, /* No protection regions are present */
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.dma_protection_support = 0x1 /* Complete DMA protection only */
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};
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const plat_drtm_dma_prot_features_t *plat_drtm_get_dma_prot_features(void)
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{
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return &dma_prot_features;
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}
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uint64_t plat_drtm_dma_prot_get_max_table_bytes(void)
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{
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return 0U;
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}
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