linux_dsm_epyc7002/arch/arm/mach-omap2/omap44xx-smc.S

/*
 * 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	#0
	ldmfd   sp!, {r2-r12, pc}
END(omap_smc1)