arch/tile/include/asm/kexec.h

   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
  22 /* Maximum physical address we can use pages from. */
  23 #define KEXEC_SOURCE_MEMORY_LIMIT TASK_SIZE
  24 /* Maximum address we can reach in physical address mode. */
  25 #define KEXEC_DESTINATION_MEMORY_LIMIT TASK_SIZE
  26 /* Maximum address we can use for the control code buffer. */
  27 #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
  28
  29 #define KEXEC_CONTROL_PAGE_SIZE PAGE_SIZE
  30
  31 /*
  32  * We don't bother to provide a unique identifier, since we can only
  33  * reboot with a single type of kernel image anyway.
  34  */
  35 #define KEXEC_ARCH KEXEC_ARCH_DEFAULT
  36
  37 /* Use the tile override for the page allocator. */
  38 struct page *kimage_alloc_pages_arch(gfp_t gfp_mask, unsigned int order);
  39 #define kimage_alloc_pages_arch kimage_alloc_pages_arch
  40
  41 #define MAX_NOTE_BYTES 1024
  42
  43 /* Defined in arch/tile/kernel/relocate_kernel.S */
  44 extern const unsigned char relocate_new_kernel[];
  45 extern const unsigned long relocate_new_kernel_size;
  46 extern void relocate_new_kernel_end(void);
  47
  48 /* Provide a dummy definition to avoid build failures. */
  49 static inline void crash_setup_regs(struct pt_regs *n, struct pt_regs *o)
  50 {
  51 }
  52
  53 #endif /* _ASM_TILE_KEXEC_H */