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https://github.com/ARM-software/arm-trusted-firmware.git
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4d4821569d
Add tsp service to check the value of the PSTATE DIT bit is as expected and toggle it's value. This is used to ensure that the DIT bit is maintained during a switch from the Normal to Secure worlds and back. Change-Id: I4e8bdfa6530e5e75925c0079d4fa2795133c5105 Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/*
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* Copyright (c) 2013-2022, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef TSP_H
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#define TSP_H
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/*
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* SMC function IDs that TSP uses to signal various forms of completions
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* to the secure payload dispatcher.
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*/
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#define TSP_ENTRY_DONE 0xf2000000
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#define TSP_ON_DONE 0xf2000001
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#define TSP_OFF_DONE 0xf2000002
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#define TSP_SUSPEND_DONE 0xf2000003
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#define TSP_RESUME_DONE 0xf2000004
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#define TSP_PREEMPTED 0xf2000005
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#define TSP_ABORT_DONE 0xf2000007
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#define TSP_SYSTEM_OFF_DONE 0xf2000008
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#define TSP_SYSTEM_RESET_DONE 0xf2000009
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/*
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* Function identifiers to handle S-EL1 interrupt through the synchronous
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* handling model. If the TSP was previously interrupted then control has to
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* be returned to the TSPD after handling the interrupt else execution can
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* remain in the TSP.
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*/
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#define TSP_HANDLED_S_EL1_INTR 0xf2000006
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/* SMC function ID that TSP uses to request service from secure monitor */
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#define TSP_GET_ARGS 0xf2001000
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/*
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* Identifiers for various TSP services. Corresponding function IDs (whether
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* fast or yielding) are generated by macros defined below
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*/
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#define TSP_ADD 0x2000
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#define TSP_SUB 0x2001
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#define TSP_MUL 0x2002
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#define TSP_DIV 0x2003
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#define TSP_HANDLE_SEL1_INTR_AND_RETURN 0x2004
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#define TSP_CHECK_DIT 0x2005
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/*
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* Identify a TSP service from function ID filtering the last 16 bits from the
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* SMC function ID
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*/
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#define TSP_BARE_FID(fid) ((fid) & 0xffff)
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/*
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* Generate function IDs for TSP services to be used in SMC calls, by
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* appropriately setting bit 31 to differentiate yielding and fast SMC calls
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*/
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#define TSP_YIELD_FID(fid) ((TSP_BARE_FID(fid) | 0x72000000))
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#define TSP_FAST_FID(fid) ((TSP_BARE_FID(fid) | 0x72000000) | (1u << 31))
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/* SMC function ID to request a previously preempted yielding smc */
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#define TSP_FID_RESUME TSP_YIELD_FID(0x3000)
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/*
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* SMC function ID to request abortion of a previously preempted yielding SMC. A
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* fast SMC is used so that the TSP abort handler does not have to be
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* reentrant.
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*/
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#define TSP_FID_ABORT TSP_FAST_FID(0x3001)
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/*
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* Total number of function IDs implemented for services offered to NS clients.
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* The function IDs are defined above
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*/
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#define TSP_NUM_FID 0x5
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/* TSP implementation version numbers */
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#define TSP_VERSION_MAJOR 0x0 /* Major version */
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#define TSP_VERSION_MINOR 0x1 /* Minor version */
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/*
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* Standard Trusted OS Function IDs that fall under Trusted OS call range
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* according to SMC calling convention
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*/
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#define TOS_CALL_COUNT 0xbf00ff00 /* Number of calls implemented */
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#define TOS_UID 0xbf00ff01 /* Implementation UID */
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/* 0xbf00ff02 is reserved */
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#define TOS_CALL_VERSION 0xbf00ff03 /* Trusted OS Call Version */
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#ifndef __ASSEMBLER__
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#include <stdint.h>
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typedef uint32_t tsp_vector_isn_t;
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typedef struct tsp_vectors {
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tsp_vector_isn_t yield_smc_entry;
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tsp_vector_isn_t fast_smc_entry;
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tsp_vector_isn_t cpu_on_entry;
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tsp_vector_isn_t cpu_off_entry;
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tsp_vector_isn_t cpu_resume_entry;
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tsp_vector_isn_t cpu_suspend_entry;
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tsp_vector_isn_t sel1_intr_entry;
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tsp_vector_isn_t system_off_entry;
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tsp_vector_isn_t system_reset_entry;
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tsp_vector_isn_t abort_yield_smc_entry;
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} tsp_vectors_t;
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void tsp_setup(void);
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#endif /* __ASSEMBLER__ */
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#endif /* TSP_H */
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