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https://github.com/ARM-software/arm-trusted-firmware.git
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2b13a98599
Added DRTM DMA protections APIs, and called them during the DLME launch and DRTM SMC handling. Change-Id: I29e7238c04e2ca9f26600276c5c05bff5387789e Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
50 lines
1.3 KiB
C
50 lines
1.3 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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*/
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#ifndef DRTM_DMA_PROT_H
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#define DRTM_DMA_PROT_H
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#include <stdint.h>
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#include <plat/common/platform.h>
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#include <services/drtm_svc.h>
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struct __packed drtm_dl_dma_prot_args_v1 {
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uint64_t dma_prot_table_paddr;
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uint64_t dma_prot_table_size;
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};
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/* Values for DRTM_PROTECT_MEMORY */
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enum dma_prot_type {
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PROTECT_NONE = -1,
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PROTECT_MEM_ALL = 0,
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PROTECT_MEM_REGION = 2,
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};
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struct dma_prot {
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enum dma_prot_type type;
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};
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#define DRTM_MEM_REGION_PAGES_AND_TYPE(pages, type) \
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(((uint64_t)(pages) & (((uint64_t)1 << 52) - 1)) \
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| (((uint64_t)(type) & 0x7) << 52))
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#define PAGES_AND_TYPE(pages, type) \
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.region_size_type = DRTM_MEM_REGION_PAGES_AND_TYPE(pages, type)
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/* Opaque / encapsulated type. */
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typedef struct drtm_dl_dma_prot_args_v1 drtm_dl_dma_prot_args_v1_t;
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bool drtm_dma_prot_init(void);
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enum drtm_retc drtm_dma_prot_check_args(const drtm_dl_dma_prot_args_v1_t *a,
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int a_dma_prot_type,
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drtm_mem_region_t p);
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enum drtm_retc drtm_dma_prot_engage(const drtm_dl_dma_prot_args_v1_t *a,
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int a_dma_prot_type);
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enum drtm_retc drtm_dma_prot_disengage(void);
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uint64_t drtm_unprotect_mem(void *ctx);
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void drtm_dma_prot_serialise_table(uint8_t *dst, size_t *size_out);
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#endif /* DRTM_DMA_PROT_H */
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