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https://github.com/ARM-software/arm-trusted-firmware.git
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50a3056a3c
TRP is a small test payload that implements Realm Monitor Management (RMM) functionalities. RMM runs in the Realm world (R-EL2) and manages the execution of Realm VMs and their interaction with the hypervisor in Normal world. TRP is used to test the interface between RMM and Normal world software, known as Realm Management Interface (RMI). Current functions includes returning RMM version and transitioning granules from Non-secure to Realm world and vice versa. More information about RMM can be found at: https://developer.arm.com/documentation/den0125/latest Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com> Change-Id: Ic7b9a1e1f3142ef6458d40150d0b4ba6bd723ea2
74 lines
1.6 KiB
ArmAsm
74 lines
1.6 KiB
ArmAsm
/*
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* Copyright (c) 2021, Arm Limited. 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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#include <asm_macros.S>
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#include <services/gtsi_svc.h>
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#include <services/rmi_svc.h>
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#include "trp_private.h"
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.global trp_head
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.global trp_smc
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.section ".head.text", "ax"
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/* ---------------------------------------------
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* Populate the params in x0-x7 from the pointer
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* to the smc args structure in x0.
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* ---------------------------------------------
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*/
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.macro restore_args_call_smc
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ldp x6, x7, [x0, #TRP_ARG6]
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ldp x4, x5, [x0, #TRP_ARG4]
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ldp x2, x3, [x0, #TRP_ARG2]
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ldp x0, x1, [x0, #TRP_ARG0]
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smc #0
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.endm
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/* ---------------------------------------------
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* Entry point for TRP
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* ---------------------------------------------
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*/
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trp_head:
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bl plat_set_my_stack
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bl plat_is_my_cpu_primary
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cbz x0, trp_secondary_cpu_entry
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/* ---------------------------------------------
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* Zero out BSS section
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* ---------------------------------------------
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*/
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ldr x0, =__BSS_START__
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ldr x1, =__BSS_SIZE__
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bl zeromem
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bl trp_setup
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bl trp_main
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trp_secondary_cpu_entry:
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mov_imm x0, RMI_RMM_REQ_COMPLETE
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mov x1, xzr
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smc #0
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b trp_handler
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/* ---------------------------------------------
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* Direct SMC call to BL31 service provided by
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* RMM Dispatcher
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* ---------------------------------------------
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*/
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func trp_smc
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restore_args_call_smc
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ret
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endfunc trp_smc
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/* ---------------------------------------------
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* RMI call handler
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* ---------------------------------------------
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*/
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func trp_handler
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bl trp_rmi_handler
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restore_args_call_smc
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b trp_handler
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endfunc trp_handler
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