| Chris Metcalf | 867e359 | 2010-05-28 23:09:12 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010 Tilera Corporation. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation, version 2. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 11 | * NON INFRINGEMENT. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * based on kexec.h from other architectures in linux-2.6.18 |
| 15 | */ |
| 16 | |
| 17 | #ifndef _ASM_TILE_KEXEC_H |
| 18 | #define _ASM_TILE_KEXEC_H |
| 19 | |
| 20 | #include <asm/page.h> |
| 21 | |
| Chris Metcalf | fc0c49f | 2012-03-29 15:48:23 -0400 | [diff] [blame] | 22 | #ifndef __tilegx__ |
| Chris Metcalf | 867e359 | 2010-05-28 23:09:12 -0400 | [diff] [blame] | 23 | /* Maximum physical address we can use pages from. */ |
| 24 | #define KEXEC_SOURCE_MEMORY_LIMIT TASK_SIZE |
| 25 | /* Maximum address we can reach in physical address mode. */ |
| 26 | #define KEXEC_DESTINATION_MEMORY_LIMIT TASK_SIZE |
| 27 | /* Maximum address we can use for the control code buffer. */ |
| 28 | #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE |
| Chris Metcalf | fc0c49f | 2012-03-29 15:48:23 -0400 | [diff] [blame] | 29 | #else |
| 30 | /* We need to limit the memory below PGDIR_SIZE since |
| 31 | * we only setup page table for [0, PGDIR_SIZE) before final kexec. |
| 32 | */ |
| 33 | /* Maximum physical address we can use pages from. */ |
| 34 | #define KEXEC_SOURCE_MEMORY_LIMIT PGDIR_SIZE |
| 35 | /* Maximum address we can reach in physical address mode. */ |
| 36 | #define KEXEC_DESTINATION_MEMORY_LIMIT PGDIR_SIZE |
| 37 | /* Maximum address we can use for the control code buffer. */ |
| 38 | #define KEXEC_CONTROL_MEMORY_LIMIT PGDIR_SIZE |
| 39 | #endif |
| Chris Metcalf | 867e359 | 2010-05-28 23:09:12 -0400 | [diff] [blame] | 40 | |
| 41 | #define KEXEC_CONTROL_PAGE_SIZE PAGE_SIZE |
| 42 | |
| 43 | /* |
| 44 | * We don't bother to provide a unique identifier, since we can only |
| 45 | * reboot with a single type of kernel image anyway. |
| 46 | */ |
| 47 | #define KEXEC_ARCH KEXEC_ARCH_DEFAULT |
| 48 | |
| 49 | /* Use the tile override for the page allocator. */ |
| 50 | struct page *kimage_alloc_pages_arch(gfp_t gfp_mask, unsigned int order); |
| 51 | #define kimage_alloc_pages_arch kimage_alloc_pages_arch |
| 52 | |
| 53 | #define MAX_NOTE_BYTES 1024 |
| 54 | |
| 55 | /* Defined in arch/tile/kernel/relocate_kernel.S */ |
| 56 | extern const unsigned char relocate_new_kernel[]; |
| 57 | extern const unsigned long relocate_new_kernel_size; |
| 58 | extern void relocate_new_kernel_end(void); |
| 59 | |
| 60 | /* Provide a dummy definition to avoid build failures. */ |
| 61 | static inline void crash_setup_regs(struct pt_regs *n, struct pt_regs *o) |
| 62 | { |
| 63 | } |
| 64 | |
| 65 | #endif /* _ASM_TILE_KEXEC_H */ |