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Diffstat (limited to 'sys/xen/interface/kexec.h')
| -rw-r--r-- | sys/xen/interface/kexec.h | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/sys/xen/interface/kexec.h b/sys/xen/interface/kexec.h deleted file mode 100644 index fc19f2f..0000000 --- a/sys/xen/interface/kexec.h +++ /dev/null @@ -1,189 +0,0 @@ -/****************************************************************************** - * kexec.h - Public portion - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Xen port written by: - * - Simon 'Horms' Horman <horms@verge.net.au> - * - Magnus Damm <magnus@valinux.co.jp> - */ - -#ifndef _XEN_PUBLIC_KEXEC_H -#define _XEN_PUBLIC_KEXEC_H - - -/* This file describes the Kexec / Kdump hypercall interface for Xen. - * - * Kexec under vanilla Linux allows a user to reboot the physical machine - * into a new user-specified kernel. The Xen port extends this idea - * to allow rebooting of the machine from dom0. When kexec for dom0 - * is used to reboot, both the hypervisor and the domains get replaced - * with some other kernel. It is possible to kexec between vanilla - * Linux and Xen and back again. Xen to Xen works well too. - * - * The hypercall interface for kexec can be divided into three main - * types of hypercall operations: - * - * 1) Range information: - * This is used by the dom0 kernel to ask the hypervisor about various - * address information. This information is needed to allow kexec-tools - * to fill in the ELF headers for /proc/vmcore properly. - * - * 2) Load and unload of images: - * There are no big surprises here, the kexec binary from kexec-tools - * runs in userspace in dom0. The tool loads/unloads data into the - * dom0 kernel such as new kernel, initramfs and hypervisor. When - * loaded the dom0 kernel performs a load hypercall operation, and - * before releasing all page references the dom0 kernel calls unload. - * - * 3) Kexec operation: - * This is used to start a previously loaded kernel. - */ - -#include "xen.h" - -#if defined(__i386__) || defined(__x86_64__) -#define KEXEC_XEN_NO_PAGES 17 -#endif - -/* - * Prototype for this hypercall is: - * int kexec_op(int cmd, void *args) - * @cmd == KEXEC_CMD_... - * KEXEC operation to perform - * @args == Operation-specific extra arguments (NULL if none). - */ - -/* - * Kexec supports two types of operation: - * - kexec into a regular kernel, very similar to a standard reboot - * - KEXEC_TYPE_DEFAULT is used to specify this type - * - kexec into a special "crash kernel", aka kexec-on-panic - * - KEXEC_TYPE_CRASH is used to specify this type - * - parts of our system may be broken at kexec-on-panic time - * - the code should be kept as simple and self-contained as possible - */ - -#define KEXEC_TYPE_DEFAULT 0 -#define KEXEC_TYPE_CRASH 1 - - -/* The kexec implementation for Xen allows the user to load two - * types of kernels, KEXEC_TYPE_DEFAULT and KEXEC_TYPE_CRASH. - * All data needed for a kexec reboot is kept in one xen_kexec_image_t - * per "instance". The data mainly consists of machine address lists to pages - * together with destination addresses. The data in xen_kexec_image_t - * is passed to the "code page" which is one page of code that performs - * the final relocations before jumping to the new kernel. - */ - -typedef struct xen_kexec_image { -#if defined(__i386__) || defined(__x86_64__) - unsigned long page_list[KEXEC_XEN_NO_PAGES]; -#endif -#if defined(__ia64__) - unsigned long reboot_code_buffer; -#endif - unsigned long indirection_page; - unsigned long start_address; -} xen_kexec_image_t; - -/* - * Perform kexec having previously loaded a kexec or kdump kernel - * as appropriate. - * type == KEXEC_TYPE_DEFAULT or KEXEC_TYPE_CRASH [in] - */ -#define KEXEC_CMD_kexec 0 -typedef struct xen_kexec_exec { - int type; -} xen_kexec_exec_t; - -/* - * Load/Unload kernel image for kexec or kdump. - * type == KEXEC_TYPE_DEFAULT or KEXEC_TYPE_CRASH [in] - * image == relocation information for kexec (ignored for unload) [in] - */ -#define KEXEC_CMD_kexec_load 1 -#define KEXEC_CMD_kexec_unload 2 -typedef struct xen_kexec_load { - int type; - xen_kexec_image_t image; -} xen_kexec_load_t; - -#define KEXEC_RANGE_MA_CRASH 0 /* machine address and size of crash area */ -#define KEXEC_RANGE_MA_XEN 1 /* machine address and size of Xen itself */ -#define KEXEC_RANGE_MA_CPU 2 /* machine address and size of a CPU note */ -#define KEXEC_RANGE_MA_XENHEAP 3 /* machine address and size of xenheap - * Note that although this is adjacent - * to Xen it exists in a separate EFI - * region on ia64, and thus needs to be - * inserted into iomem_machine separately */ -#define KEXEC_RANGE_MA_BOOT_PARAM 4 /* machine address and size of - * the ia64_boot_param */ -#define KEXEC_RANGE_MA_EFI_MEMMAP 5 /* machine address and size of - * of the EFI Memory Map */ -#define KEXEC_RANGE_MA_VMCOREINFO 6 /* machine address and size of vmcoreinfo */ - -/* - * Find the address and size of certain memory areas - * range == KEXEC_RANGE_... [in] - * nr == physical CPU number (starting from 0) if KEXEC_RANGE_MA_CPU [in] - * size == number of bytes reserved in window [out] - * start == address of the first byte in the window [out] - */ -#define KEXEC_CMD_kexec_get_range 3 -typedef struct xen_kexec_range { - int range; - int nr; - unsigned long size; - unsigned long start; -} xen_kexec_range_t; - -/* vmcoreinfo stuff */ -#define VMCOREINFO_BYTES (4096) -#define VMCOREINFO_NOTE_NAME "VMCOREINFO_XEN" -void arch_crash_save_vmcoreinfo(void); -void vmcoreinfo_append_str(const char *fmt, ...) - __attribute__ ((format (printf, 1, 2))); -#define VMCOREINFO_PAGESIZE(value) \ - vmcoreinfo_append_str("PAGESIZE=%ld\n", value) -#define VMCOREINFO_SYMBOL(name) \ - vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name) -#define VMCOREINFO_SYMBOL_ALIAS(alias, name) \ - vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #alias, (unsigned long)&name) -#define VMCOREINFO_STRUCT_SIZE(name) \ - vmcoreinfo_append_str("SIZE(%s)=%zu\n", #name, sizeof(struct name)) -#define VMCOREINFO_OFFSET(name, field) \ - vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \ - (unsigned long)offsetof(struct name, field)) -#define VMCOREINFO_OFFSET_ALIAS(name, field, alias) \ - vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #alias, \ - (unsigned long)offsetof(struct name, field)) - -#endif /* _XEN_PUBLIC_KEXEC_H */ - -/* - * Local variables: - * mode: C - * c-set-style: "BSD" - * c-basic-offset: 4 - * tab-width: 4 - * indent-tabs-mode: nil - * End: - */ |
