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

   1 /*
   2  * OMAP44xx secure APIs file.
   3  *
   4  * Copyright (C) 2010 Texas Instruments, Inc.
   5  * Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
   6  *
   7  *
   8  * This program is free software,you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/linkage.h>
  14
  15 /*
  16  * This is common routine to manage secure monitor API
  17  * used to modify the PL310 secure registers.
  18  * 'r0' contains the value to be modified and 'r12' contains
  19  * the monitor API number. It uses few CPU registers
  20  * internally and hence they need be backed up including
  21  * link register "lr".
  22  * Function signature : void omap_smc1(u32 fn, u32 arg)
  23  */
  24
  25 ENTRY(omap_smc1)
  26         stmfd   sp!, {r2-r12, lr}
  27         mov     r12, r0
  28         mov     r0, r1
  29         dsb
  30         smc     #0
  31         ldmfd   sp!, {r2-r12, pc}
  32 END(omap_smc1)