0fe2bfbd6a
Moved helper headers, needed to work with OP-TEE, which defines basic defines, used during communication with Trust-Zone Signed-off-by: Oleksii Moisieiev <oleksii_moisieiev@epam.com>
347 lines
12 KiB
C
347 lines
12 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (c) 2015-2020, Linaro Limited
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*/
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#ifndef _OPTEE_MSG_H
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#define _OPTEE_MSG_H
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/*
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* TODO: Zephyr has similar macros defined in stdint.h and called UINT32_C,
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* UINT64_C etc. This should be refactored to use macro from Zephyr.
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*/
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#define U(v) v ## U
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/*
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* This file defines the OP-TEE message protocol used to communicate
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* with an instance of OP-TEE running in secure world.
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*/
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/*****************************************************************************
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* Part 1 - formatting of messages
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*****************************************************************************/
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#define OPTEE_MSG_ATTR_TYPE_NONE U(0x0)
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#define OPTEE_MSG_ATTR_TYPE_VALUE_INPUT U(0x1)
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#define OPTEE_MSG_ATTR_TYPE_VALUE_OUTPUT U(0x2)
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#define OPTEE_MSG_ATTR_TYPE_VALUE_INOUT U(0x3)
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#define OPTEE_MSG_ATTR_TYPE_RMEM_INPUT U(0x5)
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#define OPTEE_MSG_ATTR_TYPE_RMEM_OUTPUT U(0x6)
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#define OPTEE_MSG_ATTR_TYPE_RMEM_INOUT U(0x7)
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#define OPTEE_MSG_ATTR_TYPE_FMEM_INPUT OPTEE_MSG_ATTR_TYPE_RMEM_INPUT
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#define OPTEE_MSG_ATTR_TYPE_FMEM_OUTPUT OPTEE_MSG_ATTR_TYPE_RMEM_OUTPUT
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#define OPTEE_MSG_ATTR_TYPE_FMEM_INOUT OPTEE_MSG_ATTR_TYPE_RMEM_INOUT
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#define OPTEE_MSG_ATTR_TYPE_TMEM_INPUT U(0x9)
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#define OPTEE_MSG_ATTR_TYPE_TMEM_OUTPUT U(0xa)
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#define OPTEE_MSG_ATTR_TYPE_TMEM_INOUT U(0xb)
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#define OPTEE_MSG_ATTR_TYPE_MASK GENMASK(7, 0)
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/*
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* Meta parameter to be absorbed by the Secure OS and not passed
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* to the Trusted Application.
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*
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* Currently only used with OPTEE_MSG_CMD_OPEN_SESSION.
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*/
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#define OPTEE_MSG_ATTR_META BIT(8)
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/*
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* Pointer to a list of pages used to register user-defined SHM buffer.
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* Used with OPTEE_MSG_ATTR_TYPE_TMEM_*.
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* buf_ptr should point to the beginning of the buffer. Buffer will contain
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* list of page addresses. OP-TEE core can reconstruct contiguous buffer from
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* that page addresses list. Page addresses are stored as 64 bit values.
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* Last entry on a page should point to the next page of buffer.
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* Every entry in buffer should point to a 4k page beginning (12 least
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* significant bits must be equal to zero).
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*
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* 12 least significant bits of optee_msg_param.u.tmem.buf_ptr should hold
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* page offset of user buffer.
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*
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* So, entries should be placed like members of this structure:
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*
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* struct page_data {
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* uint64_t pages_array[OPTEE_MSG_NONCONTIG_PAGE_SIZE/sizeof(uint64_t) - 1];
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* uint64_t next_page_data;
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* };
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*
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* Structure is designed to exactly fit into the page size
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* OPTEE_MSG_NONCONTIG_PAGE_SIZE which is a standard 4KB page.
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*
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* The size of 4KB is chosen because this is the smallest page size for ARM
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* architectures. If REE uses larger pages, it should divide them to 4KB ones.
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*/
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#define OPTEE_MSG_ATTR_NONCONTIG BIT(9)
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/*
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* Memory attributes for caching passed with temp memrefs. The actual value
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* used is defined outside the message protocol with the exception of
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* OPTEE_MSG_ATTR_CACHE_PREDEFINED which means the attributes already
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* defined for the memory range should be used. If optee_smc.h is used as
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* bearer of this protocol OPTEE_SMC_SHM_* is used for values.
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*/
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#define OPTEE_MSG_ATTR_CACHE_SHIFT U(16)
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#define OPTEE_MSG_ATTR_CACHE_MASK GENMASK(2, 0)
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#define OPTEE_MSG_ATTR_CACHE_PREDEFINED U(0)
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/*
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* Same values as TEE_LOGIN_* from TEE Internal API
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*/
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#define OPTEE_MSG_LOGIN_PUBLIC U(0x00000000)
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#define OPTEE_MSG_LOGIN_USER U(0x00000001)
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#define OPTEE_MSG_LOGIN_GROUP U(0x00000002)
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#define OPTEE_MSG_LOGIN_APPLICATION U(0x00000004)
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#define OPTEE_MSG_LOGIN_APPLICATION_USER U(0x00000005)
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#define OPTEE_MSG_LOGIN_APPLICATION_GROUP U(0x00000006)
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/*
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* Page size used in non-contiguous buffer entries
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*/
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#define OPTEE_MSG_NONCONTIG_PAGE_SIZE U(4096)
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#define OPTEE_MSG_FMEM_INVALID_GLOBAL_ID 0xffffffffffffffff
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#ifndef __ASSEMBLER__
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/**
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* struct optee_msg_param_tmem - temporary memory reference parameter
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* @buf_ptr: Address of the buffer
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* @size: Size of the buffer
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* @shm_ref: Temporary shared memory reference, pointer to a struct tee_shm
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*
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* Secure and normal world communicates pointers as physical address
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* instead of the virtual address. This is because secure and normal world
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* have completely independent memory mapping. Normal world can even have a
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* hypervisor which need to translate the guest physical address (AKA IPA
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* in ARM documentation) to a real physical address before passing the
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* structure to secure world.
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*/
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struct optee_msg_param_tmem {
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uint64_t buf_ptr;
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uint64_t size;
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uint64_t shm_ref;
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};
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/**
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* struct optee_msg_param_rmem - registered memory reference parameter
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* @offs: Offset into shared memory reference
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* @size: Size of the buffer
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* @shm_ref: Shared memory reference, pointer to a struct tee_shm
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*/
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struct optee_msg_param_rmem {
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uint64_t offs;
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uint64_t size;
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uint64_t shm_ref;
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};
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/**
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* struct optee_msg_param_fmem - FF-A memory reference parameter
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* @offs_lower: Lower bits of offset into shared memory reference
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* @offs_upper: Upper bits of offset into shared memory reference
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* @internal_offs: Internal offset into the first page of shared memory
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* reference
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* @size: Size of the buffer
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* @global_id: Global identifier of the shared memory
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*/
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struct optee_msg_param_fmem {
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uint32_t offs_low;
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uint16_t offs_high;
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uint16_t internal_offs;
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uint64_t size;
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uint64_t global_id;
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};
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/**
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* struct optee_msg_param_value - opaque value parameter
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*
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* Value parameters are passed unchecked between normal and secure world.
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*/
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struct optee_msg_param_value {
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uint64_t a;
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uint64_t b;
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uint64_t c;
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};
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/**
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* struct optee_msg_param - parameter used together with struct optee_msg_arg
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* @attr: attributes
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* @tmem: parameter by temporary memory reference
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* @rmem: parameter by registered memory reference
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* @fmem: parameter by FF-A registered memory reference
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* @value: parameter by opaque value
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*
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* @attr & OPTEE_MSG_ATTR_TYPE_MASK indicates if tmem, rmem or value is used in
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* the union. OPTEE_MSG_ATTR_TYPE_VALUE_* indicates value,
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* OPTEE_MSG_ATTR_TYPE_TMEM_* indicates @tmem and
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* OPTEE_MSG_ATTR_TYPE_RMEM_* or the alias PTEE_MSG_ATTR_TYPE_FMEM_* indicates
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* @rmem or @fmem depending on the conduit.
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* OPTEE_MSG_ATTR_TYPE_NONE indicates that none of the members are used.
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*/
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struct optee_msg_param {
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uint64_t attr;
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union {
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struct optee_msg_param_tmem tmem;
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struct optee_msg_param_rmem rmem;
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struct optee_msg_param_fmem fmem;
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struct optee_msg_param_value value;
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} u;
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};
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/**
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* struct optee_msg_arg - call argument
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* @cmd: Command, one of OPTEE_MSG_CMD_* or OPTEE_MSG_RPC_CMD_*
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* @func: Trusted Application function, specific to the Trusted Application,
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* used if cmd == OPTEE_MSG_CMD_INVOKE_COMMAND
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* @session: In parameter for all OPTEE_MSG_CMD_* except
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* OPTEE_MSG_CMD_OPEN_SESSION where it's an output parameter instead
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* @cancel_id: Cancellation id, a unique value to identify this request
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* @ret: return value
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* @ret_origin: origin of the return value
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* @num_params: number of parameters supplied to the OS Command
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* @params: the parameters supplied to the OS Command
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*
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* All normal calls to Trusted OS uses this struct. If cmd requires further
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* information than what these fields hold it can be passed as a parameter
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* tagged as meta (setting the OPTEE_MSG_ATTR_META bit in corresponding
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* attrs field). All parameters tagged as meta have to come first.
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*/
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struct optee_msg_arg {
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uint32_t cmd;
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uint32_t func;
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uint32_t session;
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uint32_t cancel_id;
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uint32_t pad;
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uint32_t ret;
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uint32_t ret_origin;
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uint32_t num_params;
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/* num_params tells the actual number of element in params */
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struct optee_msg_param params[];
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};
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/**
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* OPTEE_MSG_GET_ARG_SIZE - return size of struct optee_msg_arg
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*
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* @num_params: Number of parameters embedded in the struct optee_msg_arg
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*
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* Returns the size of the struct optee_msg_arg together with the number
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* of embedded parameters.
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*/
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#define OPTEE_MSG_GET_ARG_SIZE(num_params) \
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(sizeof(struct optee_msg_arg) + \
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sizeof(struct optee_msg_param) * (num_params))
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/*
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* Defines the maximum value of @num_params that can be passed to
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* OPTEE_MSG_GET_ARG_SIZE without a risk of crossing page boundary.
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*/
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#define OPTEE_MSG_MAX_NUM_PARAMS \
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((OPTEE_MSG_NONCONTIG_PAGE_SIZE - sizeof(struct optee_msg_arg)) / \
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sizeof(struct optee_msg_param))
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#endif /*__ASSEMBLER__*/
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/*****************************************************************************
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* Part 2 - requests from normal world
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*****************************************************************************/
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/*
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* Return the following UID if using API specified in this file without
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* further extensions:
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* 384fb3e0-e7f8-11e3-af63-0002a5d5c51b.
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* Represented in 4 32-bit words in OPTEE_MSG_UID_0, OPTEE_MSG_UID_1,
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* OPTEE_MSG_UID_2, OPTEE_MSG_UID_3.
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*/
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#define OPTEE_MSG_UID_0 U(0x384fb3e0)
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#define OPTEE_MSG_UID_1 U(0xe7f811e3)
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#define OPTEE_MSG_UID_2 U(0xaf630002)
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#define OPTEE_MSG_UID_3 U(0xa5d5c51b)
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#define OPTEE_MSG_FUNCID_CALLS_UID U(0xFF01)
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/*
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* Returns 2.0 if using API specified in this file without further
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* extensions. Represented in 2 32-bit words in OPTEE_MSG_REVISION_MAJOR
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* and OPTEE_MSG_REVISION_MINOR
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*/
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#define OPTEE_MSG_REVISION_MAJOR U(2)
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#define OPTEE_MSG_REVISION_MINOR U(0)
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#define OPTEE_MSG_FUNCID_CALLS_REVISION U(0xFF03)
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/*
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* Get UUID of Trusted OS.
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*
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* Used by non-secure world to figure out which Trusted OS is installed.
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* Note that returned UUID is the UUID of the Trusted OS, not of the API.
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*
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* Returns UUID in 4 32-bit words in the same way as
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* OPTEE_MSG_FUNCID_CALLS_UID described above.
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*/
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#define OPTEE_MSG_OS_OPTEE_UUID_0 U(0x486178e0)
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#define OPTEE_MSG_OS_OPTEE_UUID_1 U(0xe7f811e3)
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#define OPTEE_MSG_OS_OPTEE_UUID_2 U(0xbc5e0002)
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#define OPTEE_MSG_OS_OPTEE_UUID_3 U(0xa5d5c51b)
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#define OPTEE_MSG_FUNCID_GET_OS_UUID U(0x0000)
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/*
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* Get revision of Trusted OS.
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*
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* Used by non-secure world to figure out which version of the Trusted OS
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* is installed. Note that the returned revision is the revision of the
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* Trusted OS, not of the API.
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*
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* Returns revision in 2 32-bit words in the same way as
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* OPTEE_MSG_CALLS_REVISION described above.
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*/
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#define OPTEE_MSG_FUNCID_GET_OS_REVISION U(0x0001)
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/*
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* Do a secure call with struct optee_msg_arg as argument
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* The OPTEE_MSG_CMD_* below defines what goes in struct optee_msg_arg::cmd
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*
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* OPTEE_MSG_CMD_OPEN_SESSION opens a session to a Trusted Application.
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* The first two parameters are tagged as meta, holding two value
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* parameters to pass the following information:
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* param[0].u.value.a-b uuid of Trusted Application
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* param[1].u.value.a-b uuid of Client
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* param[1].u.value.c Login class of client OPTEE_MSG_LOGIN_*
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*
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* OPTEE_MSG_CMD_INVOKE_COMMAND invokes a command a previously opened
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* session to a Trusted Application. struct optee_msg_arg::func is Trusted
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* Application function, specific to the Trusted Application.
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*
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* OPTEE_MSG_CMD_CLOSE_SESSION closes a previously opened session to
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* Trusted Application.
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*
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* OPTEE_MSG_CMD_CANCEL cancels a currently invoked command.
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*
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* OPTEE_MSG_CMD_REGISTER_SHM registers a shared memory reference. The
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* information is passed as:
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* [in] param[0].attr OPTEE_MSG_ATTR_TYPE_TMEM_INPUT
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* [| OPTEE_MSG_ATTR_NONCONTIG]
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* [in] param[0].u.tmem.buf_ptr physical address (of first fragment)
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* [in] param[0].u.tmem.size size (of first fragment)
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* [in] param[0].u.tmem.shm_ref holds shared memory reference
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*
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* OPTEE_MSG_CMD_UNREGISTER_SHM unregisteres a previously registered shared
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* memory reference. The information is passed as:
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* [in] param[0].attr OPTEE_MSG_ATTR_TYPE_RMEM_INPUT
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* [in] param[0].u.rmem.shm_ref holds shared memory reference
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* [in] param[0].u.rmem.offs 0
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* [in] param[0].u.rmem.size 0
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*
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* OPTEE_MSG_CMD_DO_BOTTOM_HALF does the scheduled bottom half processing
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* of a driver.
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*
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* OPTEE_MSG_CMD_STOP_ASYNC_NOTIF informs secure world that from now is
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* normal world unable to process asynchronous notifications. Typically
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* used when the driver is shut down.
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*/
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#define OPTEE_MSG_CMD_OPEN_SESSION U(0)
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#define OPTEE_MSG_CMD_INVOKE_COMMAND U(1)
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#define OPTEE_MSG_CMD_CLOSE_SESSION U(2)
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#define OPTEE_MSG_CMD_CANCEL U(3)
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#define OPTEE_MSG_CMD_REGISTER_SHM U(4)
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#define OPTEE_MSG_CMD_UNREGISTER_SHM U(5)
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#define OPTEE_MSG_CMD_DO_BOTTOM_HALF U(6)
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#define OPTEE_MSG_CMD_STOP_ASYNC_NOTIF U(7)
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#define OPTEE_MSG_FUNCID_CALL_WITH_ARG U(0x0004)
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#endif /* _OPTEE_MSG_H */
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