/* * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of ARM nor the names of its contributors may be used * to endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef __OPTEED_PRIVATE_H__ #define __OPTEED_PRIVATE_H__ #include #include #include #include #include /******************************************************************************* * OPTEE PM state information e.g. OPTEE is suspended, uninitialised etc * and macros to access the state information in the per-cpu 'state' flags ******************************************************************************/ #define OPTEE_PSTATE_OFF 0 #define OPTEE_PSTATE_ON 1 #define OPTEE_PSTATE_SUSPEND 2 #define OPTEE_PSTATE_SHIFT 0 #define OPTEE_PSTATE_MASK 0x3 #define get_optee_pstate(state) ((state >> OPTEE_PSTATE_SHIFT) & \ OPTEE_PSTATE_MASK) #define clr_optee_pstate(state) (state &= ~(OPTEE_PSTATE_MASK \ << OPTEE_PSTATE_SHIFT)) #define set_optee_pstate(st, pst) do { \ clr_optee_pstate(st); \ st |= (pst & OPTEE_PSTATE_MASK) << \ OPTEE_PSTATE_SHIFT; \ } while (0) /******************************************************************************* * OPTEE execution state information i.e. aarch32 or aarch64 ******************************************************************************/ #define OPTEE_AARCH32 MODE_RW_32 #define OPTEE_AARCH64 MODE_RW_64 /******************************************************************************* * The OPTEED should know the type of OPTEE ******************************************************************************/ #define OPTEE_TYPE_UP PSCI_TOS_NOT_UP_MIG_CAP #define OPTEE_TYPE_UPM PSCI_TOS_UP_MIG_CAP #define OPTEE_TYPE_MP PSCI_TOS_NOT_PRESENT_MP /******************************************************************************* * OPTEE migrate type information as known to the OPTEED. We assume that * the OPTEED is dealing with an MP Secure Payload. ******************************************************************************/ #define OPTEE_MIGRATE_INFO OPTEE_TYPE_MP /******************************************************************************* * Number of cpus that the present on this platform. TODO: Rely on a topology * tree to determine this in the future to avoid assumptions about mpidr * allocation ******************************************************************************/ #define OPTEED_CORE_COUNT PLATFORM_CORE_COUNT /******************************************************************************* * Constants that allow assembler code to preserve callee-saved registers of the * C runtime context while performing a security state switch. ******************************************************************************/ #define OPTEED_C_RT_CTX_X19 0x0 #define OPTEED_C_RT_CTX_X20 0x8 #define OPTEED_C_RT_CTX_X21 0x10 #define OPTEED_C_RT_CTX_X22 0x18 #define OPTEED_C_RT_CTX_X23 0x20 #define OPTEED_C_RT_CTX_X24 0x28 #define OPTEED_C_RT_CTX_X25 0x30 #define OPTEED_C_RT_CTX_X26 0x38 #define OPTEED_C_RT_CTX_X27 0x40 #define OPTEED_C_RT_CTX_X28 0x48 #define OPTEED_C_RT_CTX_X29 0x50 #define OPTEED_C_RT_CTX_X30 0x58 #define OPTEED_C_RT_CTX_SIZE 0x60 #define OPTEED_C_RT_CTX_ENTRIES (OPTEED_C_RT_CTX_SIZE >> DWORD_SHIFT) #ifndef __ASSEMBLY__ #include #include typedef uint32_t optee_vector_isn_t; typedef struct optee_vectors { optee_vector_isn_t std_smc_entry; optee_vector_isn_t fast_smc_entry; optee_vector_isn_t cpu_on_entry; optee_vector_isn_t cpu_off_entry; optee_vector_isn_t cpu_resume_entry; optee_vector_isn_t cpu_suspend_entry; optee_vector_isn_t fiq_entry; optee_vector_isn_t system_off_entry; optee_vector_isn_t system_reset_entry; } optee_vectors_t; /* * The number of arguments to save during a SMC call for OPTEE. * Currently only x1 and x2 are used by OPTEE. */ #define OPTEE_NUM_ARGS 0x2 /* AArch64 callee saved general purpose register context structure. */ DEFINE_REG_STRUCT(c_rt_regs, OPTEED_C_RT_CTX_ENTRIES); /* * Compile time assertion to ensure that both the compiler and linker * have the same double word aligned view of the size of the C runtime * register context. */ CASSERT(OPTEED_C_RT_CTX_SIZE == sizeof(c_rt_regs_t), \ assert_spd_c_rt_regs_size_mismatch); /******************************************************************************* * Structure which helps the OPTEED to maintain the per-cpu state of OPTEE. * 'state' - collection of flags to track OPTEE state e.g. on/off * 'mpidr' - mpidr to associate a context with a cpu * 'c_rt_ctx' - stack address to restore C runtime context from after * returning from a synchronous entry into OPTEE. * 'cpu_ctx' - space to maintain OPTEE architectural state ******************************************************************************/ typedef struct optee_context { uint32_t state; uint64_t mpidr; uint64_t c_rt_ctx; cpu_context_t cpu_ctx; } optee_context_t; /* OPTEED power management handlers */ extern const spd_pm_ops_t opteed_pm; /******************************************************************************* * Forward declarations ******************************************************************************/ struct optee_vectors; /******************************************************************************* * Function & Data prototypes ******************************************************************************/ uint64_t opteed_enter_sp(uint64_t *c_rt_ctx); void __dead2 opteed_exit_sp(uint64_t c_rt_ctx, uint64_t ret); uint64_t opteed_synchronous_sp_entry(optee_context_t *optee_ctx); void __dead2 opteed_synchronous_sp_exit(optee_context_t *optee_ctx, uint64_t ret); void opteed_init_optee_ep_state(struct entry_point_info *optee_ep, uint32_t rw, uint64_t pc, optee_context_t *optee_ctx); extern optee_context_t opteed_sp_context[OPTEED_CORE_COUNT]; extern uint32_t opteed_rw; extern struct optee_vectors *optee_vectors; #endif /*__ASSEMBLY__*/ #endif /* __OPTEED_PRIVATE_H__ */