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git01.mediatek.com / filogic / atf / 3fb854fa3929ba92d3b78b9df8b88d930fcbf5d2 / . / services / spd / opteed / opteed_private.h
blob: 357c2ecfb9e7ab2b6e4851fd3e414983d0944dbe [file] [log] [blame]
Jens Wiklanderc2888862014-08-04 15:39:58 +0200[diff] [blame]1/*
2 * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 *
10 * Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 *
14 * Neither the name of ARM nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without specific
16 * prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef __OPTEED_PRIVATE_H__
32#define __OPTEED_PRIVATE_H__
33
34#include <arch.h>
35#include <context.h>
36#include <interrupt_mgmt.h>
37#include <platform_def.h>
38#include <psci.h>
39
40/*******************************************************************************
41 * OPTEE PM state information e.g. OPTEE is suspended, uninitialised etc
42 * and macros to access the state information in the per-cpu 'state' flags
43 ******************************************************************************/
44#define OPTEE_PSTATE_OFF 0
45#define OPTEE_PSTATE_ON 1
46#define OPTEE_PSTATE_SUSPEND 2
47#define OPTEE_PSTATE_SHIFT 0
48#define OPTEE_PSTATE_MASK 0x3
49#define get_optee_pstate(state) ((state >> OPTEE_PSTATE_SHIFT) & \
50 OPTEE_PSTATE_MASK)
51#define clr_optee_pstate(state) (state &= ~(OPTEE_PSTATE_MASK \
52 << OPTEE_PSTATE_SHIFT))
53#define set_optee_pstate(st, pst) do { \
54 clr_optee_pstate(st); \
55 st |= (pst & OPTEE_PSTATE_MASK) << \
56 OPTEE_PSTATE_SHIFT; \
57 } while (0)
58
59
60/*******************************************************************************
61 * OPTEE execution state information i.e. aarch32 or aarch64
62 ******************************************************************************/
63#define OPTEE_AARCH32 MODE_RW_32
64#define OPTEE_AARCH64 MODE_RW_64
65
66/*******************************************************************************
67 * The OPTEED should know the type of OPTEE
68 ******************************************************************************/
69#define OPTEE_TYPE_UP PSCI_TOS_NOT_UP_MIG_CAP
70#define OPTEE_TYPE_UPM PSCI_TOS_UP_MIG_CAP
71#define OPTEE_TYPE_MP PSCI_TOS_NOT_PRESENT_MP
72
73/*******************************************************************************
74 * OPTEE migrate type information as known to the OPTEED. We assume that
75 * the OPTEED is dealing with an MP Secure Payload.
76 ******************************************************************************/
77#define OPTEE_MIGRATE_INFO OPTEE_TYPE_MP
78
79/*******************************************************************************
80 * Number of cpus that the present on this platform. TODO: Rely on a topology
81 * tree to determine this in the future to avoid assumptions about mpidr
82 * allocation
83 ******************************************************************************/
84#define OPTEED_CORE_COUNT PLATFORM_CORE_COUNT
85
86/*******************************************************************************
87 * Constants that allow assembler code to preserve callee-saved registers of the
88 * C runtime context while performing a security state switch.
89 ******************************************************************************/
90#define OPTEED_C_RT_CTX_X19 0x0
91#define OPTEED_C_RT_CTX_X20 0x8
92#define OPTEED_C_RT_CTX_X21 0x10
93#define OPTEED_C_RT_CTX_X22 0x18
94#define OPTEED_C_RT_CTX_X23 0x20
95#define OPTEED_C_RT_CTX_X24 0x28
96#define OPTEED_C_RT_CTX_X25 0x30
97#define OPTEED_C_RT_CTX_X26 0x38
98#define OPTEED_C_RT_CTX_X27 0x40
99#define OPTEED_C_RT_CTX_X28 0x48
100#define OPTEED_C_RT_CTX_X29 0x50
101#define OPTEED_C_RT_CTX_X30 0x58
102#define OPTEED_C_RT_CTX_SIZE 0x60
103#define OPTEED_C_RT_CTX_ENTRIES (OPTEED_C_RT_CTX_SIZE >> DWORD_SHIFT)
104
105#ifndef __ASSEMBLY__
106
107#include <cassert.h>
108#include <stdint.h>
109
110typedef uint32_t optee_vector_isn_t;
111
112typedef struct optee_vectors {
113 optee_vector_isn_t std_smc_entry;
114 optee_vector_isn_t fast_smc_entry;
115 optee_vector_isn_t cpu_on_entry;
116 optee_vector_isn_t cpu_off_entry;
117 optee_vector_isn_t cpu_resume_entry;
118 optee_vector_isn_t cpu_suspend_entry;
119 optee_vector_isn_t fiq_entry;
120 optee_vector_isn_t system_off_entry;
121 optee_vector_isn_t system_reset_entry;
122} optee_vectors_t;
123
124/*
125 * The number of arguments to save during a SMC call for OPTEE.
126 * Currently only x1 and x2 are used by OPTEE.
127 */
128#define OPTEE_NUM_ARGS 0x2
129
130/* AArch64 callee saved general purpose register context structure. */
131DEFINE_REG_STRUCT(c_rt_regs, OPTEED_C_RT_CTX_ENTRIES);
132
133/*
134 * Compile time assertion to ensure that both the compiler and linker
135 * have the same double word aligned view of the size of the C runtime
136 * register context.
137 */
138CASSERT(OPTEED_C_RT_CTX_SIZE == sizeof(c_rt_regs_t), \
139 assert_spd_c_rt_regs_size_mismatch);
140
141/*******************************************************************************
142 * Structure which helps the OPTEED to maintain the per-cpu state of OPTEE.
143 * 'state' - collection of flags to track OPTEE state e.g. on/off
144 * 'mpidr' - mpidr to associate a context with a cpu
145 * 'c_rt_ctx' - stack address to restore C runtime context from after
146 * returning from a synchronous entry into OPTEE.
147 * 'cpu_ctx' - space to maintain OPTEE architectural state
148 ******************************************************************************/
149typedef struct optee_context {
150 uint32_t state;
151 uint64_t mpidr;
152 uint64_t c_rt_ctx;
153 cpu_context_t cpu_ctx;
154} optee_context_t;
155
156/* OPTEED power management handlers */
157extern const spd_pm_ops_t opteed_pm;
158
159/*******************************************************************************
160 * Forward declarations
161 ******************************************************************************/
162struct optee_vectors;
163
164/*******************************************************************************
165 * Function & Data prototypes
166 ******************************************************************************/
167uint64_t opteed_enter_sp(uint64_t *c_rt_ctx);
168void __dead2 opteed_exit_sp(uint64_t c_rt_ctx, uint64_t ret);
169uint64_t opteed_synchronous_sp_entry(optee_context_t *optee_ctx);
170void __dead2 opteed_synchronous_sp_exit(optee_context_t *optee_ctx, uint64_t ret);
171void opteed_init_optee_ep_state(struct entry_point_info *optee_ep,
172 uint32_t rw,
173 uint64_t pc,
174 optee_context_t *optee_ctx);
175
176extern optee_context_t opteed_sp_context[OPTEED_CORE_COUNT];
177extern uint32_t opteed_rw;
178extern struct optee_vectors *optee_vectors;
179#endif /*__ASSEMBLY__*/
180
181#endif /* __OPTEED_PRIVATE_H__ */