From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/s390/include/asm/kexec.h | 66 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 arch/s390/include/asm/kexec.h (limited to 'arch/s390/include/asm/kexec.h') diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h new file mode 100644 index 000000000..2f924bc30 --- /dev/null +++ b/arch/s390/include/asm/kexec.h @@ -0,0 +1,66 @@ +/* + * Copyright IBM Corp. 2005 + * + * Author(s): Rolf Adelsberger + * + */ + +#ifndef _S390_KEXEC_H +#define _S390_KEXEC_H + +#include +#include +/* + * 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 */ -- cgit v1.2.3-54-g00ecf