diff options
Diffstat (limited to '')
| -rw-r--r-- | kexec/kexec-syscall.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h new file mode 100644 index 0000000..1e2d12f --- /dev/null +++ b/kexec/kexec-syscall.h @@ -0,0 +1,188 @@ +#ifndef KEXEC_SYSCALL_H +#define KEXEC_SYSCALL_H + +#define __LIBRARY__ +#include <sys/syscall.h> +#include <unistd.h> + +#define LINUX_REBOOT_CMD_KEXEC_OLD 0x81726354 +#define LINUX_REBOOT_CMD_KEXEC_OLD2 0x18263645 +#define LINUX_REBOOT_CMD_KEXEC 0x45584543 + +#ifndef __NR_kexec_load +#ifdef __i386__ +#define __NR_kexec_load 283 +#endif +#ifdef __sh__ +#define __NR_kexec_load 283 +#endif +#ifdef __cris__ +#ifndef __NR_kexec_load +#define __NR_kexec_load 283 +#endif +#endif +#ifdef __ia64__ +#define __NR_kexec_load 1268 +#endif +#ifdef __powerpc64__ +#define __NR_kexec_load 268 +#endif +#ifdef __powerpc__ +#define __NR_kexec_load 268 +#endif +#ifdef __x86_64__ +#define __NR_kexec_load 246 +#endif +#ifdef __s390x__ +#define __NR_kexec_load 277 +#endif +#ifdef __s390__ +#define __NR_kexec_load 277 +#endif +#ifdef __loongarch__ +#define __NR_kexec_load 104 +#endif +#if defined(__arm__) || defined(__arm64__) +#define __NR_kexec_load __NR_SYSCALL_BASE + 347 +#endif +#if defined(__mips__) +#define __NR_kexec_load 4311 +#endif +#ifdef __m68k__ +#define __NR_kexec_load 313 +#endif +#ifdef __alpha__ +#define __NR_kexec_load 448 +#endif +#ifndef __NR_kexec_load +#error Unknown processor architecture. Needs a kexec_load syscall number. +#endif +#endif /*ifndef __NR_kexec_load*/ + +#if defined(__arm__) || defined(__loongarch__) +#undef __NR_kexec_file_load +#endif + +#ifndef __NR_kexec_file_load + +#ifdef __x86_64__ +#define __NR_kexec_file_load 320 +#endif +#ifdef __powerpc64__ +#define __NR_kexec_file_load 382 +#endif +#ifdef __s390x__ +#define __NR_kexec_file_load 381 +#endif +#ifdef __aarch64__ +#define __NR_kexec_file_load 294 +#endif +#ifdef __hppa__ +#define __NR_kexec_file_load 355 +#endif + +#ifndef __NR_kexec_file_load +/* system call not available for the arch */ +#define __NR_kexec_file_load 0xffffffff /* system call not available */ +#endif + +#endif /*ifndef __NR_kexec_file_load*/ + +struct kexec_segment; + +static inline long kexec_load(void *entry, unsigned long nr_segments, + struct kexec_segment *segments, unsigned long flags) +{ + return (long) syscall(__NR_kexec_load, entry, nr_segments, segments, flags); +} + +static inline int is_kexec_file_load_implemented(void) { + if (__NR_kexec_file_load != 0xffffffff) + return 1; + return 0; +} + +static inline long kexec_file_load(int kernel_fd, int initrd_fd, + unsigned long cmdline_len, const char *cmdline_ptr, + unsigned long flags) +{ + return (long) syscall(__NR_kexec_file_load, kernel_fd, initrd_fd, + cmdline_len, cmdline_ptr, flags); +} + +#define KEXEC_ON_CRASH 0x00000001 +#define KEXEC_PRESERVE_CONTEXT 0x00000002 +#define KEXEC_ARCH_MASK 0xffff0000 + +/* Flags for kexec file based system call */ +#define KEXEC_FILE_UNLOAD 0x00000001 +#define KEXEC_FILE_ON_CRASH 0x00000002 +#define KEXEC_FILE_NO_INITRAMFS 0x00000004 + +/* 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_HPPA (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_ARM64 (183 << 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_CRIS (76 << 16) +#define KEXEC_ARCH_LOONGARCH (258 << 16) + +#define KEXEC_MAX_SEGMENTS 16 + +#ifdef __i386__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_386 +#endif +#ifdef __sh__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_SH +#endif +#ifdef __cris__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_CRIS +#endif +#ifdef __ia64__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_IA_64 +#endif +#ifdef __powerpc64__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_PPC64 +#else + #ifdef __powerpc__ + #define KEXEC_ARCH_NATIVE KEXEC_ARCH_PPC + #endif +#endif +#ifdef __x86_64__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_X86_64 +#endif +#ifdef __s390x__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_S390 +#endif +#ifdef __s390__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_S390 +#endif +#ifdef __arm__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_ARM +#endif +#if defined(__mips__) +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_MIPS +#endif +#ifdef __m68k__ +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_68K +#endif +#if defined(__arm64__) +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_ARM64 +#endif +#if defined(__loongarch__) +#define KEXEC_ARCH_NATIVE KEXEC_ARCH_LOONGARCH +#endif + +#endif /* KEXEC_SYSCALL_H */ |