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https://github.com/ARM-software/arm-trusted-firmware.git
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6a88ec8b30
Add required SMCs by RMM to push attestation signing requests to EL3 and get responses. EL3 may then choose to push these requests to a HES as suitable for a platform. This patch also supports the new RMM_EL3_FEATURES interface, that RMM can use to query for support for HES based signing. The new interface exposes a feature register with different bits defining different discoverable features. This new interface is available starting the 0.4 version of the RMM-EL3 interface, causing the version to bump up. This patch also adds a platform port for FVP that implements the platform hooks required to enable the new SMCs, but it does not push to a HES and instead copies a zeroed buffer in EL3. Change-Id: I69c110252835122a9533e71bdcce10b5f2a686b2 Signed-off-by: Raghu Krishnamurthy <raghupathyk@nvidia.com>
66 lines
2 KiB
C
66 lines
2 KiB
C
/*
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* Copyright (c) 2021-2024, Arm Limited and Contributors. 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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#ifndef RMMD_PRIVATE_H
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#define RMMD_PRIVATE_H
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#include <context.h>
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/*******************************************************************************
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* Constants that allow assembler code to preserve callee-saved registers of the
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* C runtime context while performing a security state switch.
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******************************************************************************/
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#define RMMD_C_RT_CTX_X19 0x0
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#define RMMD_C_RT_CTX_X20 0x8
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#define RMMD_C_RT_CTX_X21 0x10
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#define RMMD_C_RT_CTX_X22 0x18
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#define RMMD_C_RT_CTX_X23 0x20
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#define RMMD_C_RT_CTX_X24 0x28
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#define RMMD_C_RT_CTX_X25 0x30
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#define RMMD_C_RT_CTX_X26 0x38
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#define RMMD_C_RT_CTX_X27 0x40
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#define RMMD_C_RT_CTX_X28 0x48
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#define RMMD_C_RT_CTX_X29 0x50
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#define RMMD_C_RT_CTX_X30 0x58
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#define RMMD_C_RT_CTX_SIZE 0x60
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#define RMMD_C_RT_CTX_ENTRIES (RMMD_C_RT_CTX_SIZE >> DWORD_SHIFT)
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#ifndef __ASSEMBLER__
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#include <stdint.h>
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/*
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* Data structure used by the RMM dispatcher (RMMD) in EL3 to track context of
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* the RMM at R-EL2.
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*/
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typedef struct rmmd_rmm_context {
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uint64_t c_rt_ctx;
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cpu_context_t cpu_ctx;
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} rmmd_rmm_context_t;
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/* Functions used to enter/exit the RMM synchronously */
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uint64_t rmmd_rmm_sync_entry(rmmd_rmm_context_t *ctx);
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__dead2 void rmmd_rmm_sync_exit(uint64_t rc);
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/* Functions implementing attestation utilities for RMM */
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int rmmd_attest_get_platform_token(uint64_t buf_pa, uint64_t *buf_size,
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uint64_t c_size,
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uint64_t *remaining_len);
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int rmmd_attest_get_signing_key(uint64_t buf_pa, uint64_t *buf_size,
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uint64_t ecc_curve);
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uint64_t rmmd_el3_token_sign(void *handle, uint64_t x1, uint64_t x2,
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uint64_t x3, uint64_t x4);
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/* Assembly helpers */
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uint64_t rmmd_rmm_enter(uint64_t *c_rt_ctx);
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void __dead2 rmmd_rmm_exit(uint64_t c_rt_ctx, uint64_t ret);
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/* Reference to PM ops for the RMMD */
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extern const spd_pm_ops_t rmmd_pm;
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#endif /* __ASSEMBLER__ */
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#endif /* RMMD_PRIVATE_H */
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