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1 | /* |
2 | * Based on arch/arm/include/asm/proc-fns.h | |
3 | * | |
4 | * Copyright (C) 1997-1999 Russell King | |
5 | * Copyright (C) 2000 Deep Blue Solutions Ltd | |
6 | * Copyright (C) 2012 ARM Ltd. | |
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 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | #ifndef __ASM_PROCFNS_H | |
21 | #define __ASM_PROCFNS_H | |
22 | ||
23 | #ifdef __KERNEL__ | |
24 | #ifndef __ASSEMBLY__ | |
25 | ||
26 | #include <asm/page.h> | |
27 | ||
28 | struct mm_struct; | |
29 | ||
30 | extern void cpu_cache_off(void); | |
31 | extern void cpu_do_idle(void); | |
32 | extern void cpu_do_switch_mm(unsigned long pgd_phys, struct mm_struct *mm); | |
33 | extern void cpu_reset(unsigned long addr) __attribute__((noreturn)); | |
34 | ||
35 | #include <asm/memory.h> | |
36 | ||
37 | #define cpu_switch_mm(pgd,mm) cpu_do_switch_mm(virt_to_phys(pgd),mm) | |
38 | ||
39 | #define cpu_get_pgd() \ | |
40 | ({ \ | |
41 | unsigned long pg; \ | |
42 | asm("mrs %0, ttbr0_el1\n" \ | |
43 | : "=r" (pg)); \ | |
44 | pg &= ~0xffff000000003ffful; \ | |
45 | (pgd_t *)phys_to_virt(pg); \ | |
46 | }) | |
47 | ||
48 | #endif /* __ASSEMBLY__ */ | |
49 | #endif /* __KERNEL__ */ | |
50 | #endif /* __ASM_PROCFNS_H */ |