projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 3fd45a13 GU |
1 | /* |
| 2 | * SMP support for APMU based systems with Cortex A7/A15 | |
| 3 | * | |
| 4 | * Copyright (C) 2014 Renesas Electronics Corporation | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/linkage.h> | |
| 12 | #include <asm/assembler.h> | |
| 13 | ||
| 14 | ENTRY(shmobile_init_cntvoff) | |
| 15 | /* | |
| 16 | * CNTVOFF has to be initialized either from non-secure Hypervisor | |
| 17 | * mode or secure Monitor mode with SCR.NS==1. If TrustZone is enabled | |
| 18 | * then it should be handled by the secure code | |
| 19 | */ | |
| 20 | cps #MON_MODE | |
| 21 | mrc p15, 0, r1, c1, c1, 0 /* Get Secure Config */ | |
| 22 | orr r0, r1, #1 | |
| 23 | mcr p15, 0, r0, c1, c1, 0 /* Set Non Secure bit */ | |
| 24 | instr_sync | |
| 25 | mov r0, #0 | |
| 26 | mcrr p15, 4, r0, r0, c14 /* CNTVOFF = 0 */ | |
| 27 | instr_sync | |
| 28 | mcr p15, 0, r1, c1, c1, 0 /* Set Secure bit */ | |
| 29 | instr_sync | |
| 30 | cps #SVC_MODE | |
| 31 | ret lr | |
| 32 | ENDPROC(shmobile_init_cntvoff) | |
| 33 | ||
| 34 | ENTRY(shmobile_boot_apmu) | |
| 35 | bl shmobile_init_cntvoff | |
| 36 | b secondary_startup | |
| 37 | ENDPROC(shmobile_boot_apmu) |