1d2912cb1SThomas Gleixner/* SPDX-License-Identifier: GPL-2.0-only */ 2ba9456acSSantosh Shilimkar/* 3a33f1788SPali Rohár * OMAP34xx and OMAP44xx secure APIs file. 4ba9456acSSantosh Shilimkar * 5ba9456acSSantosh Shilimkar * Copyright (C) 2010 Texas Instruments, Inc. 6ba9456acSSantosh Shilimkar * Written by Santosh Shilimkar <santosh.shilimkar@ti.com> 7ba9456acSSantosh Shilimkar * 8a33f1788SPali Rohár * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg> 9*149ed3d4SPali Rohár * Copyright (C) 2013 Pali Rohár <pali@kernel.org> 10ba9456acSSantosh Shilimkar */ 11ba9456acSSantosh Shilimkar 12ba9456acSSantosh Shilimkar#include <linux/linkage.h> 13ba9456acSSantosh Shilimkar 14ba9456acSSantosh Shilimkar/* 15ba9456acSSantosh Shilimkar * This is common routine to manage secure monitor API 16ba9456acSSantosh Shilimkar * used to modify the PL310 secure registers. 17ba9456acSSantosh Shilimkar * 'r0' contains the value to be modified and 'r12' contains 18ba9456acSSantosh Shilimkar * the monitor API number. It uses few CPU registers 19ba9456acSSantosh Shilimkar * internally and hence they need be backed up including 20ba9456acSSantosh Shilimkar * link register "lr". 2148840e16SAndrew F. Davis * Function signature : void _omap_smc1(u32 fn, u32 arg) 22ba9456acSSantosh Shilimkar */ 233fe1ee40SStefan Agner .arch armv7-a 243fe1ee40SStefan Agner .arch_extension sec 2548840e16SAndrew F. DavisENTRY(_omap_smc1) 26ba9456acSSantosh Shilimkar stmfd sp!, {r2-r12, lr} 27ba9456acSSantosh Shilimkar mov r12, r0 28ba9456acSSantosh Shilimkar mov r0, r1 29ba9456acSSantosh Shilimkar dsb 30ba9456acSSantosh Shilimkar smc #0 31ba9456acSSantosh Shilimkar ldmfd sp!, {r2-r12, pc} 3248840e16SAndrew F. DavisENDPROC(_omap_smc1) 33ba9456acSSantosh Shilimkar 34ba9456acSSantosh Shilimkar/** 35ba9456acSSantosh Shilimkar * u32 omap_smc2(u32 id, u32 falg, u32 pargs) 36ba9456acSSantosh Shilimkar * Low level common routine for secure HAL and PPA APIs. 37ba9456acSSantosh Shilimkar * @id: Application ID of HAL APIs 38ba9456acSSantosh Shilimkar * @flag: Flag to indicate the criticality of operation 39ba9456acSSantosh Shilimkar * @pargs: Physical address of parameter list starting 40ba9456acSSantosh Shilimkar * with number of parametrs 41ba9456acSSantosh Shilimkar */ 42ba9456acSSantosh ShilimkarENTRY(omap_smc2) 43ba9456acSSantosh Shilimkar stmfd sp!, {r4-r12, lr} 44ba9456acSSantosh Shilimkar mov r3, r2 45ba9456acSSantosh Shilimkar mov r2, r1 46ba9456acSSantosh Shilimkar mov r1, #0x0 @ Process ID 47ba9456acSSantosh Shilimkar mov r6, #0xff 48ba9456acSSantosh Shilimkar mov r12, #0x00 @ Secure Service ID 49ba9456acSSantosh Shilimkar mov r7, #0 50ba9456acSSantosh Shilimkar mcr p15, 0, r7, c7, c5, 6 51ba9456acSSantosh Shilimkar dsb 52ba9456acSSantosh Shilimkar dmb 53ba9456acSSantosh Shilimkar smc #0 54ba9456acSSantosh Shilimkar ldmfd sp!, {r4-r12, pc} 55ba9456acSSantosh ShilimkarENDPROC(omap_smc2) 56ba9456acSSantosh Shilimkar 57a33f1788SPali Rohár/** 58a33f1788SPali Rohár * u32 omap_smc3(u32 service_id, u32 process_id, u32 flag, u32 pargs) 59a33f1788SPali Rohár * Low level common routine for secure HAL and PPA APIs via smc #1 60a33f1788SPali Rohár * r0 - @service_id: Secure Service ID 61a33f1788SPali Rohár * r1 - @process_id: Process ID 62a33f1788SPali Rohár * r2 - @flag: Flag to indicate the criticality of operation 63a33f1788SPali Rohár * r3 - @pargs: Physical address of parameter list 64a33f1788SPali Rohár */ 65a33f1788SPali RohárENTRY(omap_smc3) 66a33f1788SPali Rohár stmfd sp!, {r4-r11, lr} 67a33f1788SPali Rohár mov r12, r0 @ Copy the secure service ID 68a33f1788SPali Rohár mov r6, #0xff @ Indicate new Task call 69a33f1788SPali Rohár dsb @ Memory Barrier (not sure if needed, copied from omap_smc2) 70a33f1788SPali Rohár smc #1 @ Call PPA service 71a33f1788SPali Rohár ldmfd sp!, {r4-r11, pc} 72a33f1788SPali RohárENDPROC(omap_smc3) 73a33f1788SPali Rohár 74ba9456acSSantosh ShilimkarENTRY(omap_modify_auxcoreboot0) 75ba9456acSSantosh Shilimkar stmfd sp!, {r1-r12, lr} 76ba9456acSSantosh Shilimkar ldr r12, =0x104 77ba9456acSSantosh Shilimkar dsb 78ba9456acSSantosh Shilimkar smc #0 79ba9456acSSantosh Shilimkar ldmfd sp!, {r1-r12, pc} 80ba9456acSSantosh ShilimkarENDPROC(omap_modify_auxcoreboot0) 81ba9456acSSantosh Shilimkar 82ba9456acSSantosh ShilimkarENTRY(omap_auxcoreboot_addr) 83ba9456acSSantosh Shilimkar stmfd sp!, {r2-r12, lr} 84ba9456acSSantosh Shilimkar ldr r12, =0x105 85ba9456acSSantosh Shilimkar dsb 86ba9456acSSantosh Shilimkar smc #0 87ba9456acSSantosh Shilimkar ldmfd sp!, {r2-r12, pc} 88ba9456acSSantosh ShilimkarENDPROC(omap_auxcoreboot_addr) 89ba9456acSSantosh Shilimkar 90ba9456acSSantosh ShilimkarENTRY(omap_read_auxcoreboot0) 91ba9456acSSantosh Shilimkar stmfd sp!, {r2-r12, lr} 92ba9456acSSantosh Shilimkar ldr r12, =0x103 93ba9456acSSantosh Shilimkar dsb 94ba9456acSSantosh Shilimkar smc #0 95ba9456acSSantosh Shilimkar ldmfd sp!, {r2-r12, pc} 96ba9456acSSantosh ShilimkarENDPROC(omap_read_auxcoreboot0) 97