2 * include/asm-s390/kexec.h
4 * (C) Copyright IBM Corp. 2005
6 * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
14 #include <asm/processor.h>
16 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
17 * I.e. Maximum page that is mapped directly into kernel memory,
18 * and kmap is not required.
21 /* Maximum physical address we can use pages from */
22 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
24 /* Maximum address we can reach in physical address mode */
25 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
27 /* Maximum address we can use for the control pages */
28 /* Not more than 2GB */
29 #define KEXEC_CONTROL_MEMORY_LIMIT (1<<31)
31 /* Allocate one page for the pdp and the second for the code */
32 #define KEXEC_CONTROL_CODE_SIZE 4096
34 /* The native architecture */
35 #define KEXEC_ARCH KEXEC_ARCH_S390
37 #define MAX_NOTE_BYTES 1024
38 typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
40 extern note_buf_t crash_notes[];
42 #endif /*_S390_KEXEC_H */