| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * 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 |
| |
| /* 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 */ |
