122038315SVarun Wadekar /* 2bbbbcdaeSDavid Cunado * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. 322038315SVarun Wadekar * 482cb2c1aSdp-arm * SPDX-License-Identifier: BSD-3-Clause 522038315SVarun Wadekar */ 622038315SVarun Wadekar 7c3cf06f1SAntonio Nino Diaz #ifndef TLKD_PRIVATE_H 8c3cf06f1SAntonio Nino Diaz #define TLKD_PRIVATE_H 922038315SVarun Wadekar 1022038315SVarun Wadekar #include <platform_def.h> 1109d40e0eSAntonio Nino Diaz 1209d40e0eSAntonio Nino Diaz #include <arch.h> 1309d40e0eSAntonio Nino Diaz #include <bl31/interrupt_mgmt.h> 1409d40e0eSAntonio Nino Diaz #include <context.h> 1509d40e0eSAntonio Nino Diaz #include <lib/psci/psci.h> 1622038315SVarun Wadekar 1722038315SVarun Wadekar /* 18bbbbcdaeSDavid Cunado * This flag is used by the TLKD to determine if the SP is servicing a yielding 1922038315SVarun Wadekar * SMC request prior to programming the next entry into the SP e.g. if SP 2022038315SVarun Wadekar * execution is preempted by a non-secure interrupt and handed control to the 2122038315SVarun Wadekar * normal world. If another request which is distinct from what the SP was 2222038315SVarun Wadekar * previously doing arrives, then this flag will be help the TLKD to either 2322038315SVarun Wadekar * reject the new request or service it while ensuring that the previous context 2422038315SVarun Wadekar * is not corrupted. 2522038315SVarun Wadekar */ 26bbbbcdaeSDavid Cunado #define YIELD_SMC_ACTIVE_FLAG_SHIFT 2 27bbbbcdaeSDavid Cunado #define YIELD_SMC_ACTIVE_FLAG_MASK 1 28bbbbcdaeSDavid Cunado #define get_yield_smc_active_flag(state) \ 29bbbbcdaeSDavid Cunado (((state) >> YIELD_SMC_ACTIVE_FLAG_SHIFT) \ 30bbbbcdaeSDavid Cunado & YIELD_SMC_ACTIVE_FLAG_MASK) 31bbbbcdaeSDavid Cunado #define set_yield_smc_active_flag(state) ((state) |= \ 32bbbbcdaeSDavid Cunado (1 << YIELD_SMC_ACTIVE_FLAG_SHIFT)) 33bbbbcdaeSDavid Cunado #define clr_yield_smc_active_flag(state) ((state) &= \ 34bbbbcdaeSDavid Cunado ~(YIELD_SMC_ACTIVE_FLAG_MASK \ 35bbbbcdaeSDavid Cunado << YIELD_SMC_ACTIVE_FLAG_SHIFT)) 3622038315SVarun Wadekar 3722038315SVarun Wadekar /******************************************************************************* 386e159e7aSVarun Wadekar * Translate virtual address received from the NS world 396e159e7aSVarun Wadekar ******************************************************************************/ 406e159e7aSVarun Wadekar #define TLK_TRANSLATE_NS_VADDR 4 416e159e7aSVarun Wadekar 426e159e7aSVarun Wadekar /******************************************************************************* 4322038315SVarun Wadekar * Secure Payload execution state information i.e. aarch32 or aarch64 4422038315SVarun Wadekar ******************************************************************************/ 4522038315SVarun Wadekar #define SP_AARCH32 MODE_RW_32 4622038315SVarun Wadekar #define SP_AARCH64 MODE_RW_64 4722038315SVarun Wadekar 4822038315SVarun Wadekar /******************************************************************************* 4922038315SVarun Wadekar * Number of cpus that the present on this platform. TODO: Rely on a topology 5022038315SVarun Wadekar * tree to determine this in the future to avoid assumptions about mpidr 5122038315SVarun Wadekar * allocation 5222038315SVarun Wadekar ******************************************************************************/ 5322038315SVarun Wadekar #define TLKD_CORE_COUNT PLATFORM_CORE_COUNT 5422038315SVarun Wadekar 5522038315SVarun Wadekar /******************************************************************************* 5622038315SVarun Wadekar * Constants that allow assembler code to preserve callee-saved registers of the 5722038315SVarun Wadekar * C runtime context while performing a security state switch. 5822038315SVarun Wadekar ******************************************************************************/ 5922038315SVarun Wadekar #define TLKD_C_RT_CTX_X19 0x0 6022038315SVarun Wadekar #define TLKD_C_RT_CTX_X20 0x8 6122038315SVarun Wadekar #define TLKD_C_RT_CTX_X21 0x10 6222038315SVarun Wadekar #define TLKD_C_RT_CTX_X22 0x18 6322038315SVarun Wadekar #define TLKD_C_RT_CTX_X23 0x20 6422038315SVarun Wadekar #define TLKD_C_RT_CTX_X24 0x28 6522038315SVarun Wadekar #define TLKD_C_RT_CTX_X25 0x30 6622038315SVarun Wadekar #define TLKD_C_RT_CTX_X26 0x38 6722038315SVarun Wadekar #define TLKD_C_RT_CTX_X27 0x40 6822038315SVarun Wadekar #define TLKD_C_RT_CTX_X28 0x48 6922038315SVarun Wadekar #define TLKD_C_RT_CTX_X29 0x50 7022038315SVarun Wadekar #define TLKD_C_RT_CTX_X30 0x58 7122038315SVarun Wadekar #define TLKD_C_RT_CTX_SIZE 0x60 7222038315SVarun Wadekar #define TLKD_C_RT_CTX_ENTRIES (TLKD_C_RT_CTX_SIZE >> DWORD_SHIFT) 7322038315SVarun Wadekar 74d5dfdeb6SJulius Werner #ifndef __ASSEMBLER__ 7522038315SVarun Wadekar 7622038315SVarun Wadekar #include <stdint.h> 7722038315SVarun Wadekar 7809d40e0eSAntonio Nino Diaz #include <lib/cassert.h> 7909d40e0eSAntonio Nino Diaz 8022038315SVarun Wadekar /* AArch64 callee saved general purpose register context structure. */ 8122038315SVarun Wadekar DEFINE_REG_STRUCT(c_rt_regs, TLKD_C_RT_CTX_ENTRIES); 8222038315SVarun Wadekar 8322038315SVarun Wadekar /* 8422038315SVarun Wadekar * Compile time assertion to ensure that both the compiler and linker 8522038315SVarun Wadekar * have the same double word aligned view of the size of the C runtime 8622038315SVarun Wadekar * register context. 8722038315SVarun Wadekar */ 88*9a90d720SElyes Haouas CASSERT(TLKD_C_RT_CTX_SIZE == sizeof(c_rt_regs_t), 8922038315SVarun Wadekar assert_tlkd_c_rt_regs_size_mismatch); 9022038315SVarun Wadekar 9122038315SVarun Wadekar /******************************************************************************* 9222038315SVarun Wadekar * Structure which helps the SPD to maintain the per-cpu state of the SP. 9322038315SVarun Wadekar * 'state' - collection of flags to track SP state e.g. on/off 9422038315SVarun Wadekar * 'mpidr' - mpidr to associate a context with a cpu 9522038315SVarun Wadekar * 'c_rt_ctx' - stack address to restore C runtime context from after 9622038315SVarun Wadekar * returning from a synchronous entry into the SP. 9722038315SVarun Wadekar * 'cpu_ctx' - space to maintain SP architectural state 9822038315SVarun Wadekar * 'saved_tsp_args' - space to store arguments for TSP arithmetic operations 9922038315SVarun Wadekar * which will queried using the TSP_GET_ARGS SMC by TSP. 10022038315SVarun Wadekar ******************************************************************************/ 10122038315SVarun Wadekar typedef struct tlk_context { 10222038315SVarun Wadekar uint32_t state; 10322038315SVarun Wadekar uint64_t mpidr; 10422038315SVarun Wadekar uint64_t c_rt_ctx; 10522038315SVarun Wadekar cpu_context_t cpu_ctx; 10622038315SVarun Wadekar } tlk_context_t; 10722038315SVarun Wadekar 10822038315SVarun Wadekar /******************************************************************************* 10922038315SVarun Wadekar * Function & Data prototypes 11022038315SVarun Wadekar ******************************************************************************/ 1116e159e7aSVarun Wadekar uint64_t tlkd_va_translate(uintptr_t va, int type); 11222038315SVarun Wadekar uint64_t tlkd_enter_sp(uint64_t *c_rt_ctx); 11322038315SVarun Wadekar void __dead2 tlkd_exit_sp(uint64_t c_rt_ctx, uint64_t ret); 11422038315SVarun Wadekar uint64_t tlkd_synchronous_sp_entry(tlk_context_t *tlk_ctx); 11522038315SVarun Wadekar void __dead2 tlkd_synchronous_sp_exit(tlk_context_t *tlk_ctx, 11622038315SVarun Wadekar uint64_t ret); 11722038315SVarun Wadekar void tlkd_init_tlk_ep_state(struct entry_point_info *tlk_entry_point, 11822038315SVarun Wadekar uint32_t rw, 11922038315SVarun Wadekar uint64_t pc, 12022038315SVarun Wadekar tlk_context_t *tlk_ctx); 12122038315SVarun Wadekar 122d5dfdeb6SJulius Werner #endif /*__ASSEMBLER__*/ 12322038315SVarun Wadekar 124c3cf06f1SAntonio Nino Diaz #endif /* TLKD_PRIVATE_H */ 125