From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- arch/arm/mach-omap2/omap-smc.S | 96 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 arch/arm/mach-omap2/omap-smc.S (limited to 'arch/arm/mach-omap2/omap-smc.S') diff --git a/arch/arm/mach-omap2/omap-smc.S b/arch/arm/mach-omap2/omap-smc.S new file mode 100644 index 000000000..7376f5280 --- /dev/null +++ b/arch/arm/mach-omap2/omap-smc.S @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * OMAP34xx and OMAP44xx secure APIs file. + * + * Copyright (C) 2010 Texas Instruments, Inc. + * Written by Santosh Shilimkar + * + * Copyright (C) 2012 Ivaylo Dimitrov + * Copyright (C) 2013 Pali Rohár + */ + +#include + +/* + * This is common routine to manage secure monitor API + * used to modify the PL310 secure registers. + * 'r0' contains the value to be modified and 'r12' contains + * the monitor API number. It uses few CPU registers + * internally and hence they need be backed up including + * link register "lr". + * Function signature : void _omap_smc1(u32 fn, u32 arg) + */ + .arch armv7-a + .arch_extension sec +ENTRY(_omap_smc1) + stmfd sp!, {r2-r12, lr} + mov r12, r0 + mov r0, r1 + dsb + smc #0 + ldmfd sp!, {r2-r12, pc} +ENDPROC(_omap_smc1) + +/** + * u32 omap_smc2(u32 id, u32 falg, u32 pargs) + * Low level common routine for secure HAL and PPA APIs. + * @id: Application ID of HAL APIs + * @flag: Flag to indicate the criticality of operation + * @pargs: Physical address of parameter list starting + * with number of parametrs + */ +ENTRY(omap_smc2) + stmfd sp!, {r4-r12, lr} + mov r3, r2 + mov r2, r1 + mov r1, #0x0 @ Process ID + mov r6, #0xff + mov r12, #0x00 @ Secure Service ID + mov r7, #0 + mcr p15, 0, r7, c7, c5, 6 + dsb + dmb + smc #0 + ldmfd sp!, {r4-r12, pc} +ENDPROC(omap_smc2) + +/** + * u32 omap_smc3(u32 service_id, u32 process_id, u32 flag, u32 pargs) + * Low level common routine for secure HAL and PPA APIs via smc #1 + * r0 - @service_id: Secure Service ID + * r1 - @process_id: Process ID + * r2 - @flag: Flag to indicate the criticality of operation + * r3 - @pargs: Physical address of parameter list + */ +ENTRY(omap_smc3) + stmfd sp!, {r4-r11, lr} + mov r12, r0 @ Copy the secure service ID + mov r6, #0xff @ Indicate new Task call + dsb @ Memory Barrier (not sure if needed, copied from omap_smc2) + smc #1 @ Call PPA service + ldmfd sp!, {r4-r11, pc} +ENDPROC(omap_smc3) + +ENTRY(omap_modify_auxcoreboot0) + stmfd sp!, {r1-r12, lr} + ldr r12, =0x104 + dsb + smc #0 + ldmfd sp!, {r1-r12, pc} +ENDPROC(omap_modify_auxcoreboot0) + +ENTRY(omap_auxcoreboot_addr) + stmfd sp!, {r2-r12, lr} + ldr r12, =0x105 + dsb + smc #0 + ldmfd sp!, {r2-r12, pc} +ENDPROC(omap_auxcoreboot_addr) + +ENTRY(omap_read_auxcoreboot0) + stmfd sp!, {r2-r12, lr} + ldr r12, =0x103 + dsb + smc #0 + ldmfd sp!, {r2-r12, pc} +ENDPROC(omap_read_auxcoreboot0) -- cgit v1.2.3