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Diffstat (limited to '')
| -rw-r--r-- | include/services/rmmd_svc.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/include/services/rmmd_svc.h b/include/services/rmmd_svc.h new file mode 100644 index 0000000..de7181c --- /dev/null +++ b/include/services/rmmd_svc.h @@ -0,0 +1,188 @@ +/* + * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef RMMD_SVC_H +#define RMMD_SVC_H + +#include <lib/smccc.h> +#include <lib/utils_def.h> + +/* STD calls FNUM Min/Max ranges */ +#define RMI_FNUM_MIN_VALUE U(0x150) +#define RMI_FNUM_MAX_VALUE U(0x18F) + +/* Construct RMI fastcall std FID from offset */ +#define SMC64_RMI_FID(_offset) \ + ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \ + (SMC_64 << FUNCID_CC_SHIFT) | \ + (OEN_STD_START << FUNCID_OEN_SHIFT) | \ + (((RMI_FNUM_MIN_VALUE + (_offset)) & FUNCID_NUM_MASK) \ + << FUNCID_NUM_SHIFT)) + +#define is_rmi_fid(fid) __extension__ ({ \ + __typeof__(fid) _fid = (fid); \ + ((GET_SMC_NUM(_fid) >= RMI_FNUM_MIN_VALUE) && \ + (GET_SMC_NUM(_fid) <= RMI_FNUM_MAX_VALUE) && \ + (GET_SMC_TYPE(_fid) == SMC_TYPE_FAST) && \ + (GET_SMC_CC(_fid) == SMC_64) && \ + (GET_SMC_OEN(_fid) == OEN_STD_START) && \ + ((_fid & 0x00FE0000) == 0U)); }) + +/* + * RMI_FNUM_REQ_COMPLETE is the only function in the RMI range that originates + * from the Realm world and is handled by the RMMD. The RMI functions are + * always invoked by the Normal world, forwarded by RMMD and handled by the + * RMM. + */ + /* 0x18F */ +#define RMM_RMI_REQ_COMPLETE SMC64_RMI_FID(U(0x3F)) + +/* RMM_BOOT_COMPLETE arg0 error codes */ +#define E_RMM_BOOT_SUCCESS (0) +#define E_RMM_BOOT_UNKNOWN (-1) +#define E_RMM_BOOT_VERSION_MISMATCH (-2) +#define E_RMM_BOOT_CPUS_OUT_OF_RANGE (-3) +#define E_RMM_BOOT_CPU_ID_OUT_OF_RANGE (-4) +#define E_RMM_BOOT_INVALID_SHARED_BUFFER (-5) +#define E_RMM_BOOT_MANIFEST_VERSION_NOT_SUPPORTED (-6) +#define E_RMM_BOOT_MANIFEST_DATA_ERROR (-7) + +/* The SMC in the range 0x8400 0191 - 0x8400 01AF are reserved for RSIs.*/ + +/* + * EL3 - RMM SMCs used for requesting RMMD services. These SMCs originate in Realm + * world and return to Realm world. + * + * These are allocated from 0x8400 01B0 - 0x8400 01CF in the RMM Service range. + */ +#define RMMD_EL3_FNUM_MIN_VALUE U(0x1B0) +#define RMMD_EL3_FNUM_MAX_VALUE U(0x1CF) + +/* Construct RMM_EL3 fastcall std FID from offset */ +#define SMC64_RMMD_EL3_FID(_offset) \ + ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \ + (SMC_64 << FUNCID_CC_SHIFT) | \ + (OEN_STD_START << FUNCID_OEN_SHIFT) | \ + (((RMMD_EL3_FNUM_MIN_VALUE + (_offset)) & FUNCID_NUM_MASK) \ + << FUNCID_NUM_SHIFT)) + +/* The macros below are used to identify GTSI calls from the SMC function ID */ +#define is_rmmd_el3_fid(fid) __extension__ ({ \ + __typeof__(fid) _fid = (fid); \ + ((GET_SMC_NUM(_fid) >= RMMD_EL3_FNUM_MIN_VALUE) &&\ + (GET_SMC_NUM(_fid) <= RMMD_EL3_FNUM_MAX_VALUE) &&\ + (GET_SMC_TYPE(_fid) == SMC_TYPE_FAST) && \ + (GET_SMC_CC(_fid) == SMC_64) && \ + (GET_SMC_OEN(_fid) == OEN_STD_START) && \ + ((_fid & 0x00FE0000) == 0U)); }) + + /* 0x1B0 - 0x1B1 */ +#define RMM_GTSI_DELEGATE SMC64_RMMD_EL3_FID(U(0)) +#define RMM_GTSI_UNDELEGATE SMC64_RMMD_EL3_FID(U(1)) + +/* Return error codes from RMM-EL3 SMCs */ +#define E_RMM_OK 0 +#define E_RMM_UNK -1 +#define E_RMM_BAD_ADDR -2 +#define E_RMM_BAD_PAS -3 +#define E_RMM_NOMEM -4 +#define E_RMM_INVAL -5 + +/* Acceptable SHA sizes for Challenge object */ +#define SHA256_DIGEST_SIZE 32U +#define SHA384_DIGEST_SIZE 48U +#define SHA512_DIGEST_SIZE 64U + +/* + * Retrieve Realm attestation key from EL3. Only P-384 ECC curve key is + * supported. The arguments to this SMC are : + * arg0 - Function ID. + * arg1 - Realm attestation key buffer Physical address. + * arg2 - Realm attestation key buffer size (in bytes). + * arg3 - The type of the elliptic curve to which the requested + * attestation key belongs to. The value should be one of the + * defined curve types. + * The return arguments are : + * ret0 - Status / error. + * ret1 - Size of the realm attestation key if successful. + */ + /* 0x1B2 */ +#define RMM_ATTEST_GET_REALM_KEY SMC64_RMMD_EL3_FID(U(2)) + +/* + * Retrieve Platform token from EL3. + * The arguments to this SMC are : + * arg0 - Function ID. + * arg1 - Platform attestation token buffer Physical address. (The challenge + * object is passed in this buffer.) + * arg2 - Platform attestation token buffer size (in bytes). + * arg3 - Challenge object size (in bytes). It has to be one of the defined + * SHA hash sizes. + * The return arguments are : + * ret0 - Status / error. + * ret1 - Size of the platform token if successful. + */ + /* 0x1B3 */ +#define RMM_ATTEST_GET_PLAT_TOKEN SMC64_RMMD_EL3_FID(U(3)) + +/* ECC Curve types for attest key generation */ +#define ATTEST_KEY_CURVE_ECC_SECP384R1 0 + +/* + * RMM_BOOT_COMPLETE originates on RMM when the boot finishes (either cold + * or warm boot). This is handled by the RMM-EL3 interface SMC handler. + * + * RMM_BOOT_COMPLETE FID is located at the end of the available range. + */ + /* 0x1CF */ +#define RMM_BOOT_COMPLETE SMC64_RMMD_EL3_FID(U(0x1F)) + +/* + * The major version number of the RMM Boot Interface implementation. + * Increase this whenever the semantics of the boot arguments change making it + * backwards incompatible. + */ +#define RMM_EL3_IFC_VERSION_MAJOR (U(0)) + +/* + * The minor version number of the RMM Boot Interface implementation. + * Increase this when a bug is fixed, or a feature is added without + * breaking compatibility. + */ +#define RMM_EL3_IFC_VERSION_MINOR (U(1)) + +#define RMM_EL3_INTERFACE_VERSION \ + (((RMM_EL3_IFC_VERSION_MAJOR << 16) & 0x7FFFF) | \ + RMM_EL3_IFC_VERSION_MINOR) + +#define RMM_EL3_IFC_VERSION_GET_MAJOR(_version) (((_version) >> 16) \ + & 0x7FFF) +#define RMM_EL3_IFC_VERSION_GET_MAJOR_MINOR(_version) ((_version) & 0xFFFF) + +#ifndef __ASSEMBLER__ +#include <stdint.h> + +int rmmd_setup(void); +uint64_t rmmd_rmi_handler(uint32_t smc_fid, + uint64_t x1, + uint64_t x2, + uint64_t x3, + uint64_t x4, + void *cookie, + void *handle, + uint64_t flags); + +uint64_t rmmd_rmm_el3_handler(uint32_t smc_fid, + uint64_t x1, + uint64_t x2, + uint64_t x3, + uint64_t x4, + void *cookie, + void *handle, + uint64_t flags); + +#endif /* __ASSEMBLER__ */ +#endif /* RMMD_SVC_H */ |