aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/omap44xx-smc.S
blob: 89bb2b141473d628d537347ebbaeb8def90eea3c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
/*
 * OMAP44xx secure APIs file.
 *
 * Copyright (C) 2010 Texas Instruments, Inc.
 * Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
 *
 *
 * This program is free software,you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#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
	ldmfd   sp!, {r2-r12, pc}
END(omap_smc1)