1 files changed, 66 insertions, 0 deletions
diff --git a/include/arch/x86_64/linux/kexec.h b/include/arch/x86_64/linux/kexec.h
new file mode 100644
index 00000000..d9e77bd7
--- /dev/null
+++ b/include/arch/x86_64/linux/kexec.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef LINUX_KEXEC_H
+#define LINUX_KEXEC_H
+
+/* kexec system call -  It loads the new kernel to boot into.
+ * kexec does not sync, or unmount filesystems so if you need
+ * that to happen you need to do that yourself.
+ */
+
+#include <linux/types.h>
+
+/* kexec flags for different usage scenarios */
+#define KEXEC_ON_CRASH		    0x00000001
+#define KEXEC_PRESERVE_CONTEXT	    0x00000002
+#define KEXEC_UPDATE_ELFCOREHDR	    0x00000004
+#define KEXEC_CRASH_HOTPLUG_SUPPORT 0x00000008
+#define KEXEC_ARCH_MASK		    0xffff0000
+
+/*
+ * Kexec file load interface flags.
+ * KEXEC_FILE_UNLOAD : Unload already loaded kexec/kdump image.
+ * KEXEC_FILE_ON_CRASH : Load/unload operation belongs to kdump image.
+ * KEXEC_FILE_NO_INITRAMFS : No initramfs is being loaded. Ignore the initrd
+ *                           fd field.
+ */
+#define KEXEC_FILE_UNLOAD	0x00000001
+#define KEXEC_FILE_ON_CRASH	0x00000002
+#define KEXEC_FILE_NO_INITRAMFS 0x00000004
+#define KEXEC_FILE_DEBUG	0x00000008
+#define KEXEC_FILE_NO_CMA	0x00000010
+
+/* These values match the ELF architecture values.
+ * Unless there is a good reason that should continue to be the case.
+ */
+#define KEXEC_ARCH_DEFAULT   (0 << 16)
+#define KEXEC_ARCH_386	     (3 << 16)
+#define KEXEC_ARCH_68K	     (4 << 16)
+#define KEXEC_ARCH_PARISC    (15 << 16)
+#define KEXEC_ARCH_X86_64    (62 << 16)
+#define KEXEC_ARCH_PPC	     (20 << 16)
+#define KEXEC_ARCH_PPC64     (21 << 16)
+#define KEXEC_ARCH_IA_64     (50 << 16)
+#define KEXEC_ARCH_ARM	     (40 << 16)
+#define KEXEC_ARCH_S390	     (22 << 16)
+#define KEXEC_ARCH_SH	     (42 << 16)
+#define KEXEC_ARCH_MIPS_LE   (10 << 16)
+#define KEXEC_ARCH_MIPS	     (8 << 16)
+#define KEXEC_ARCH_AARCH64   (183 << 16)
+#define KEXEC_ARCH_RISCV     (243 << 16)
+#define KEXEC_ARCH_LOONGARCH (258 << 16)
+
+/* The artificial cap on the number of segments passed to kexec_load. */
+#define KEXEC_SEGMENT_MAX 16
+
+/*
+ * This structure is used to hold the arguments that are used when
+ * loading  kernel binaries.
+ */
+struct kexec_segment {
+	const void *buf;
+	__kernel_size_t bufsz;
+	const void *mem;
+	__kernel_size_t memsz;
+};
+
+#endif /* LINUX_KEXEC_H */