| /* |
| * SMP support for APMU based systems with Cortex A7/A15 |
| * |
| * Copyright (C) 2014 Renesas Electronics Corporation |
| * |
| * 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> |
| #include <asm/assembler.h> |
| |
| ENTRY(shmobile_init_cntvoff) |
| /* |
| * CNTVOFF has to be initialized either from non-secure Hypervisor |
| * mode or secure Monitor mode with SCR.NS==1. If TrustZone is enabled |
| * then it should be handled by the secure code |
| */ |
| cps #MON_MODE |
| mrc p15, 0, r1, c1, c1, 0 /* Get Secure Config */ |
| orr r0, r1, #1 |
| mcr p15, 0, r0, c1, c1, 0 /* Set Non Secure bit */ |
| instr_sync |
| mov r0, #0 |
| mcrr p15, 4, r0, r0, c14 /* CNTVOFF = 0 */ |
| instr_sync |
| mcr p15, 0, r1, c1, c1, 0 /* Set Secure bit */ |
| instr_sync |
| cps #SVC_MODE |
| ret lr |
| ENDPROC(shmobile_init_cntvoff) |
| |
| #ifdef CONFIG_SMP |
| ENTRY(shmobile_boot_apmu) |
| bl shmobile_init_cntvoff |
| b secondary_startup |
| ENDPROC(shmobile_boot_apmu) |
| #endif |
