linux-vybrid_public/include/asm-ppc/kexec.h

#ifndef _PPC_KEXEC_H
#define _PPC_KEXEC_H

#ifdef CONFIG_KEXEC

/*
 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
 * I.e. Maximum page that is mapped directly into kernel memory,
 * and kmap is not required.
 *
 * Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct
 * calculation for the amount of memory directly mappable into the
 * kernel memory space.
 */

/* Maximum physical address we can use pages from */
#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
/* Maximum address we can reach in physical address mode */
#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
/* Maximum address we can use for the control code buffer */
#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE

#define KEXEC_CONTROL_CODE_SIZE	4096

/* The native architecture */
#define KEXEC_ARCH KEXEC_ARCH_PPC

#ifndef __ASSEMBLY__

extern void *crash_notes;

struct kimage;

extern void machine_kexec_simple(struct kimage *image);

#endif /* __ASSEMBLY__ */

#endif /* CONFIG_KEXEC */

#endif /* _PPC_KEXEC_H */