177c27753SZelalem Aweke /* 2*2132c707SSona Mathew * Copyright (c) 2021-2025, Arm Limited and Contributors. All rights reserved. 377c27753SZelalem Aweke * 477c27753SZelalem Aweke * SPDX-License-Identifier: BSD-3-Clause 577c27753SZelalem Aweke */ 677c27753SZelalem Aweke 777c27753SZelalem Aweke #ifndef RMMD_PRIVATE_H 877c27753SZelalem Aweke #define RMMD_PRIVATE_H 977c27753SZelalem Aweke 1077c27753SZelalem Aweke #include <context.h> 11*2132c707SSona Mathew #include <services/rmmd_svc.h> 1277c27753SZelalem Aweke 1377c27753SZelalem Aweke /******************************************************************************* 1477c27753SZelalem Aweke * Constants that allow assembler code to preserve callee-saved registers of the 1577c27753SZelalem Aweke * C runtime context while performing a security state switch. 1677c27753SZelalem Aweke ******************************************************************************/ 1777c27753SZelalem Aweke #define RMMD_C_RT_CTX_X19 0x0 1877c27753SZelalem Aweke #define RMMD_C_RT_CTX_X20 0x8 1977c27753SZelalem Aweke #define RMMD_C_RT_CTX_X21 0x10 2077c27753SZelalem Aweke #define RMMD_C_RT_CTX_X22 0x18 2177c27753SZelalem Aweke #define RMMD_C_RT_CTX_X23 0x20 2277c27753SZelalem Aweke #define RMMD_C_RT_CTX_X24 0x28 2377c27753SZelalem Aweke #define RMMD_C_RT_CTX_X25 0x30 2477c27753SZelalem Aweke #define RMMD_C_RT_CTX_X26 0x38 2577c27753SZelalem Aweke #define RMMD_C_RT_CTX_X27 0x40 2677c27753SZelalem Aweke #define RMMD_C_RT_CTX_X28 0x48 2777c27753SZelalem Aweke #define RMMD_C_RT_CTX_X29 0x50 2877c27753SZelalem Aweke #define RMMD_C_RT_CTX_X30 0x58 2977c27753SZelalem Aweke 3077c27753SZelalem Aweke #define RMMD_C_RT_CTX_SIZE 0x60 3177c27753SZelalem Aweke #define RMMD_C_RT_CTX_ENTRIES (RMMD_C_RT_CTX_SIZE >> DWORD_SHIFT) 3277c27753SZelalem Aweke 3377c27753SZelalem Aweke #ifndef __ASSEMBLER__ 3477c27753SZelalem Aweke #include <stdint.h> 3577c27753SZelalem Aweke 3677c27753SZelalem Aweke /* 3777c27753SZelalem Aweke * Data structure used by the RMM dispatcher (RMMD) in EL3 to track context of 3877c27753SZelalem Aweke * the RMM at R-EL2. 3977c27753SZelalem Aweke */ 4077c27753SZelalem Aweke typedef struct rmmd_rmm_context { 4177c27753SZelalem Aweke uint64_t c_rt_ctx; 4277c27753SZelalem Aweke cpu_context_t cpu_ctx; 4377c27753SZelalem Aweke } rmmd_rmm_context_t; 4477c27753SZelalem Aweke 4577c27753SZelalem Aweke /* Functions used to enter/exit the RMM synchronously */ 4677c27753SZelalem Aweke uint64_t rmmd_rmm_sync_entry(rmmd_rmm_context_t *ctx); 4777c27753SZelalem Aweke __dead2 void rmmd_rmm_sync_exit(uint64_t rc); 4877c27753SZelalem Aweke 490f9159b7SSoby Mathew /* Functions implementing attestation utilities for RMM */ 50dc65ae46SJavier Almansa Sobrino int rmmd_attest_get_platform_token(uint64_t buf_pa, uint64_t *buf_size, 5142cf6026SJuan Pablo Conde uint64_t c_size, 5242cf6026SJuan Pablo Conde uint64_t *remaining_len); 53dc65ae46SJavier Almansa Sobrino int rmmd_attest_get_signing_key(uint64_t buf_pa, uint64_t *buf_size, 54a0435105SSoby Mathew uint64_t ecc_curve); 556a88ec8bSRaghu Krishnamurthy uint64_t rmmd_el3_token_sign(void *handle, uint64_t x1, uint64_t x2, 566a88ec8bSRaghu Krishnamurthy uint64_t x3, uint64_t x4); 570f9159b7SSoby Mathew 58*2132c707SSona Mathew /* Functions implementing IDE KM programming */ 59*2132c707SSona Mathew int rmmd_el3_ide_key_program(uint64_t ecam_address, uint64_t rp_id, 60*2132c707SSona Mathew uint64_t ide_stream_info, rp_ide_key_info_t *ide_key_info_ptr, 61*2132c707SSona Mathew uint64_t request_id, uint64_t cookie); 62*2132c707SSona Mathew int rmmd_el3_ide_key_set_go(uint64_t ecam_address, uint64_t rp_id, uint64_t ide_stream_info, 63*2132c707SSona Mathew uint64_t request_id, uint64_t cookie); 64*2132c707SSona Mathew int rmmd_el3_ide_key_set_stop(uint64_t ecam_address, uint64_t rp_id, uint64_t ide_stream_info, 65*2132c707SSona Mathew uint64_t request_id, uint64_t cookie); 66*2132c707SSona Mathew int rmmd_el3_ide_km_pull_response(uint64_t ecam_address, uint64_t rp_id, uint64_t *req_resp, 67*2132c707SSona Mathew uint64_t *request_id, uint64_t *cookie_ptr); 68*2132c707SSona Mathew 6977c27753SZelalem Aweke /* Assembly helpers */ 7077c27753SZelalem Aweke uint64_t rmmd_rmm_enter(uint64_t *c_rt_ctx); 7177c27753SZelalem Aweke void __dead2 rmmd_rmm_exit(uint64_t c_rt_ctx, uint64_t ret); 7277c27753SZelalem Aweke 7377c27753SZelalem Aweke /* Reference to PM ops for the RMMD */ 7477c27753SZelalem Aweke extern const spd_pm_ops_t rmmd_pm; 7577c27753SZelalem Aweke 7677c27753SZelalem Aweke #endif /* __ASSEMBLER__ */ 7777c27753SZelalem Aweke 7877c27753SZelalem Aweke #endif /* RMMD_PRIVATE_H */ 79