96 строки
2.4 KiB
ArmAsm
96 строки
2.4 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* OMAP34xx and OMAP44xx secure APIs file.
|
|
*
|
|
* Copyright (C) 2010 Texas Instruments, Inc.
|
|
* Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
|
|
*
|
|
* Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
|
|
* Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
/*
|
|
* 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)
|
|
*/
|
|
|
|
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)
|