| /* |
| * Copyright (c) 2013 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com |
| * |
| * Exynos low-level resume code |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/linkage.h> |
| |
| #define CPU_MASK 0xff0ffff0 |
| #define CPU_CORTEX_A9 0x410fc090 |
| |
| /* |
| * The following code is located into the .data section. This is to |
| * allow l2x0_regs_phys to be accessed with a relative load while we |
| * can't rely on any MMU translation. We could have put l2x0_regs_phys |
| * in the .text section as well, but some setups might insist on it to |
| * be truly read-only. (Reference from: arch/arm/kernel/sleep.S) |
| */ |
| .data |
| .align |
| |
| /* |
| * sleep magic, to allow the bootloader to check for an valid |
| * image to resume to. Must be the first word before the |
| * exynos_cpu_resume entry. |
| */ |
| |
| .word 0x2bedf00d |
| |
| /* |
| * exynos_cpu_resume |
| * |
| * resume code entry for bootloader to call |
| */ |
| |
| ENTRY(exynos_cpu_resume) |
| #ifdef CONFIG_CACHE_L2X0 |
| mrc p15, 0, r0, c0, c0, 0 |
| ldr r1, =CPU_MASK |
| and r0, r0, r1 |
| ldr r1, =CPU_CORTEX_A9 |
| cmp r0, r1 |
| bleq l2c310_early_resume |
| #endif |
| b cpu_resume |
| ENDPROC(exynos_cpu_resume) |
