67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/*
|
|
* Copyright IBM Corp. 2005
|
|
*
|
|
* Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef _S390_KEXEC_H
|
|
#define _S390_KEXEC_H
|
|
|
|
#include <asm/processor.h>
|
|
#include <asm/page.h>
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
/* 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 pages */
|
|
/* Not more than 2GB */
|
|
#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31)
|
|
|
|
/* Allocate control page with GFP_DMA */
|
|
#define KEXEC_CONTROL_MEMORY_GFP GFP_DMA
|
|
|
|
/* Maximum address we can use for the crash control pages */
|
|
#define KEXEC_CRASH_CONTROL_MEMORY_LIMIT (-1UL)
|
|
|
|
/* Allocate one page for the pdp and the second for the code */
|
|
#define KEXEC_CONTROL_PAGE_SIZE 4096
|
|
|
|
/* Alignment of crashkernel memory */
|
|
#define KEXEC_CRASH_MEM_ALIGN HPAGE_SIZE
|
|
|
|
/* The native architecture */
|
|
#define KEXEC_ARCH KEXEC_ARCH_S390
|
|
|
|
/*
|
|
* Size for s390x ELF notes per CPU
|
|
*
|
|
* Seven notes plus zero note at the end: prstatus, fpregset, timer,
|
|
* tod_cmp, tod_reg, control regs, and prefix
|
|
*/
|
|
#define KEXEC_NOTE_BYTES \
|
|
(ALIGN(sizeof(struct elf_note), 4) * 8 + \
|
|
ALIGN(sizeof("CORE"), 4) * 7 + \
|
|
ALIGN(sizeof(struct elf_prstatus), 4) + \
|
|
ALIGN(sizeof(elf_fpregset_t), 4) + \
|
|
ALIGN(sizeof(u64), 4) + \
|
|
ALIGN(sizeof(u64), 4) + \
|
|
ALIGN(sizeof(u32), 4) + \
|
|
ALIGN(sizeof(u64) * 16, 4) + \
|
|
ALIGN(sizeof(u32), 4) \
|
|
)
|
|
|
|
/* Provide a dummy definition to avoid build failures. */
|
|
static inline void crash_setup_regs(struct pt_regs *newregs,
|
|
struct pt_regs *oldregs) { }
|
|
|
|
#endif /*_S390_KEXEC_H */
|