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-rw-r--r--kexec/arch/x86_64/Makefile24
l---------kexec/arch/x86_64/include/arch/options.h1
-rw-r--r--kexec/arch/x86_64/kexec-bzImage64.c397
-rw-r--r--kexec/arch/x86_64/kexec-elf-rel-x86_64.c94
-rw-r--r--kexec/arch/x86_64/kexec-elf-x86_64.c257
-rw-r--r--kexec/arch/x86_64/kexec-x86_64.c190
-rw-r--r--kexec/arch/x86_64/kexec-x86_64.h41
7 files changed, 1004 insertions, 0 deletions
diff --git a/kexec/arch/x86_64/Makefile b/kexec/arch/x86_64/Makefile
new file mode 100644
index 0000000..275add5
--- /dev/null
+++ b/kexec/arch/x86_64/Makefile
@@ -0,0 +1,24 @@
+#
+# kexec x86_64 (linux booting linux)
+#
+x86_64_KEXEC_SRCS = kexec/arch/i386/kexec-elf-x86.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-bzImage.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-multiboot-x86.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-mb2-x86.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-beoboot-x86.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-nbi.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/x86-linux-setup.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-x86-common.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/crashdump-x86.c
+
+x86_64_KEXEC_SRCS_native = kexec/arch/x86_64/kexec-x86_64.c
+x86_64_KEXEC_SRCS_native += kexec/arch/x86_64/kexec-elf-x86_64.c
+x86_64_KEXEC_SRCS_native += kexec/arch/x86_64/kexec-elf-rel-x86_64.c
+x86_64_KEXEC_SRCS_native += kexec/arch/x86_64/kexec-bzImage64.c
+
+x86_64_KEXEC_SRCS += $(x86_64_KEXEC_SRCS_native)
+
+# Don't add sources in i386/ to dist, as i386/Makefile adds them
+dist += kexec/arch/x86_64/Makefile $(x86_64_KEXEC_SRCS_native) \
+ kexec/arch/x86_64/kexec-x86_64.h \
+ kexec/arch/x86_64/include/arch/options.h
diff --git a/kexec/arch/x86_64/include/arch/options.h b/kexec/arch/x86_64/include/arch/options.h
new file mode 120000
index 0000000..047b0f9
--- /dev/null
+++ b/kexec/arch/x86_64/include/arch/options.h
@@ -0,0 +1 @@
+../../../i386/include/arch/options.h \ No newline at end of file
diff --git a/kexec/arch/x86_64/kexec-bzImage64.c b/kexec/arch/x86_64/kexec-bzImage64.c
new file mode 100644
index 0000000..aba4e3b
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-bzImage64.c
@@ -0,0 +1,397 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2010 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include <x86/x86-linux.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-x86_64.h"
+#include "../i386/x86-linux-setup.h"
+#include "../i386/crashdump-x86.h"
+#include <arch/options.h>
+
+static const int probe_debug = 0;
+
+int bzImage64_probe(const char *buf, off_t len)
+{
+ const struct x86_linux_header *header;
+
+ if ((uintmax_t)len < (uintmax_t)(2 * 512)) {
+ if (probe_debug)
+ fprintf(stderr, "File is too short to be a bzImage!\n");
+ return -1;
+ }
+ header = (const struct x86_linux_header *)buf;
+ if (memcmp(header->header_magic, "HdrS", 4) != 0) {
+ if (probe_debug)
+ fprintf(stderr, "Not a bzImage\n");
+ return -1;
+ }
+ if (header->boot_sector_magic != 0xAA55) {
+ if (probe_debug)
+ fprintf(stderr, "No x86 boot sector present\n");
+ /* No x86 boot sector present */
+ return -1;
+ }
+ if (header->protocol_version < 0x020C) {
+ if (probe_debug)
+ fprintf(stderr, "Must be at least protocol version 2.12\n");
+ /* Must be at least protocol version 2.12 */
+ return -1;
+ }
+ if ((header->loadflags & 1) == 0) {
+ if (probe_debug)
+ fprintf(stderr, "zImage not a bzImage\n");
+ /* Not a bzImage */
+ return -1;
+ }
+ if ((header->xloadflags & 3) != 3) {
+ if (probe_debug)
+ fprintf(stderr, "Not a relocatable bzImage64\n");
+ /* Must be KERNEL_64 and CAN_BE_LOADED_ABOVE_4G */
+ return -1;
+ }
+
+#define XLF_EFI_KEXEC (1 << 4)
+ if ((header->xloadflags & XLF_EFI_KEXEC) == XLF_EFI_KEXEC)
+ bzImage_support_efi_boot = 1;
+
+ /* I've got a relocatable bzImage64 */
+ if (probe_debug)
+ fprintf(stderr, "It's a relocatable bzImage64\n");
+ return 0;
+}
+
+void bzImage64_usage(void)
+{
+ printf( " --entry-32bit Use the kernels 32bit entry point.\n"
+ " --real-mode Use the kernels real mode entry point.\n"
+ " --command-line=STRING Set the kernel command line to STRING.\n"
+ " --append=STRING Set the kernel command line to STRING.\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ );
+}
+
+static int do_bzImage64_load(struct kexec_info *info,
+ const char *kernel, off_t kernel_len,
+ const char *command_line, off_t command_line_len,
+ const char *initrd, off_t initrd_len)
+{
+ struct x86_linux_header setup_header;
+ struct x86_linux_param_header *real_mode;
+ int setup_sects;
+ size_t size;
+ int kern16_size;
+ unsigned long setup_base, setup_size, setup_header_size;
+ struct entry64_regs regs64;
+ char *modified_cmdline;
+ unsigned long cmdline_end;
+ unsigned long align, addr, k_size;
+ unsigned kern16_size_needed;
+
+ /*
+ * Find out about the file I am about to load.
+ */
+ if ((uintmax_t)kernel_len < (uintmax_t)(2 * 512))
+ return -1;
+
+ memcpy(&setup_header, kernel, sizeof(setup_header));
+ setup_sects = setup_header.setup_sects;
+ if (setup_sects == 0)
+ setup_sects = 4;
+ kern16_size = (setup_sects + 1) * 512;
+ if (kernel_len < kern16_size) {
+ fprintf(stderr, "BzImage truncated?\n");
+ return -1;
+ }
+
+ if ((uintmax_t)command_line_len > (uintmax_t)setup_header.cmdline_size) {
+ dbgprintf("Kernel command line too long for kernel!\n");
+ return -1;
+ }
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (command_line) {
+ strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created. load_crashdump_segments will take care of
+ * loading the segments as high in memory as possible, hence
+ * in turn as away as possible from kernel to avoid being
+ * stomped by the kernel.
+ */
+ if (load_crashdump_segments(info, modified_cmdline, -1, 0) < 0)
+ return -1;
+
+ /* Use new command line buffer */
+ command_line = modified_cmdline;
+ command_line_len = strlen(command_line) + 1;
+ }
+
+ /* x86_64 purgatory could be anywhere */
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ 0x3000, -1, -1, 0);
+ dbgprintf("Loaded purgatory at addr 0x%lx\n", info->rhdr.rel_addr);
+ /* The argument/parameter segment */
+ kern16_size_needed = kern16_size;
+ if (kern16_size_needed < 4096)
+ kern16_size_needed = 4096;
+ setup_size = kern16_size_needed + command_line_len +
+ PURGATORY_CMDLINE_SIZE;
+ real_mode = xmalloc(setup_size);
+ memset(real_mode, 0, setup_size);
+
+ /* only copy setup_header */
+ setup_header_size = kernel[0x201] + 0x202 - 0x1f1;
+ if (setup_header_size > 0x7f)
+ setup_header_size = 0x7f;
+ memcpy((unsigned char *)real_mode + 0x1f1, kernel + 0x1f1,
+ setup_header_size);
+
+ /* No real mode code will be executing. setup segment can be loaded
+ * anywhere as we will be just reading command line.
+ */
+ setup_base = add_buffer(info, real_mode, setup_size, setup_size,
+ 16, 0x3000, -1, -1);
+
+ dbgprintf("Loaded real_mode_data and command line at 0x%lx\n",
+ setup_base);
+
+ /* The main kernel segment */
+ k_size = kernel_len - kern16_size;
+ /* need to use run-time size for buffer searching */
+ dbgprintf("kernel init_size 0x%x\n", real_mode->init_size);
+ size = _ALIGN(real_mode->init_size, 4096);
+ align = real_mode->kernel_alignment;
+ addr = add_buffer(info, kernel + kern16_size, k_size,
+ size, align, 0x100000, -1, -1);
+ if (addr == ULONG_MAX)
+ die("can not load bzImage64");
+ dbgprintf("Loaded 64bit kernel at 0x%lx\n", addr);
+
+ /* Tell the kernel what is going on */
+ setup_linux_bootloader_parameters_high(info, real_mode, setup_base,
+ kern16_size_needed, command_line, command_line_len,
+ initrd, initrd_len, 1); /* put initrd high too */
+
+ elf_rel_get_symbol(&info->rhdr, "entry64_regs", &regs64,
+ sizeof(regs64));
+ regs64.rbx = 0; /* Bootstrap processor */
+ regs64.rsi = setup_base; /* Pointer to the parameters */
+ regs64.rip = addr + 0x200; /* the entry point for startup_64 */
+ regs64.rsp = elf_rel_get_addr(&info->rhdr, "stack_end"); /* Stack, unused */
+ elf_rel_set_symbol(&info->rhdr, "entry64_regs", &regs64,
+ sizeof(regs64));
+
+ cmdline_end = setup_base + kern16_size_needed + command_line_len - 1;
+ elf_rel_set_symbol(&info->rhdr, "cmdline_end", &cmdline_end,
+ sizeof(unsigned long));
+
+ /* Fill in the information BIOS calls would normally provide. */
+ setup_linux_system_parameters(info, real_mode);
+
+ return 0;
+}
+
+/* This assumes file is being loaded using file based kexec syscall */
+int bzImage64_load_file(int argc, char **argv, struct kexec_info *info)
+{
+ int ret = 0;
+ char *command_line = NULL, *tmp_cmdline = NULL;
+ const char *ramdisk = NULL, *append = NULL;
+ int entry_16bit = 0, entry_32bit = 0;
+ int opt;
+ int command_line_len;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, 0, OPT_APPEND },
+ { "append", 1, 0, OPT_APPEND },
+ { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE },
+ { "initrd", 1, 0, OPT_RAMDISK },
+ { "ramdisk", 1, 0, OPT_RAMDISK },
+ { "real-mode", 0, 0, OPT_REAL_MODE },
+ { "entry-32bit", 0, 0, OPT_ENTRY_32BIT },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "d";
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX)
+ break;
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_REAL_MODE:
+ entry_16bit = 1;
+ break;
+ case OPT_ENTRY_32BIT:
+ entry_32bit = 1;
+ break;
+ }
+ }
+ command_line = concat_cmdline(tmp_cmdline, append);
+ if (tmp_cmdline)
+ free(tmp_cmdline);
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) + 1;
+ } else {
+ command_line = strdup("\0");
+ command_line_len = 1;
+ }
+
+ if (entry_16bit || entry_32bit) {
+ fprintf(stderr, "Kexec2 syscall does not support 16bit"
+ " or 32bit entry yet\n");
+ ret = -1;
+ goto out;
+ }
+
+ if (ramdisk) {
+ info->initrd_fd = open(ramdisk, O_RDONLY);
+ if (info->initrd_fd == -1) {
+ fprintf(stderr, "Could not open initrd file %s:%s\n",
+ ramdisk, strerror(errno));
+ ret = -1;
+ goto out;
+ }
+ }
+
+ info->command_line = command_line;
+ info->command_line_len = command_line_len;
+ return ret;
+out:
+ free(command_line);
+ return ret;
+}
+
+int bzImage64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ char *command_line = NULL, *tmp_cmdline = NULL;
+ const char *ramdisk = NULL, *append = NULL;
+ char *ramdisk_buf;
+ off_t ramdisk_length = 0;
+ int command_line_len;
+ int entry_16bit = 0, entry_32bit = 0;
+ int opt;
+ int result;
+
+ if (info->file_mode)
+ return bzImage64_load_file(argc, argv, info);
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, 0, OPT_APPEND },
+ { "append", 1, 0, OPT_APPEND },
+ { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE },
+ { "initrd", 1, 0, OPT_RAMDISK },
+ { "ramdisk", 1, 0, OPT_RAMDISK },
+ { "real-mode", 0, 0, OPT_REAL_MODE },
+ { "entry-32bit", 0, 0, OPT_ENTRY_32BIT },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "d";
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX)
+ break;
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_REAL_MODE:
+ entry_16bit = 1;
+ break;
+ case OPT_ENTRY_32BIT:
+ entry_32bit = 1;
+ break;
+ }
+ }
+ command_line = concat_cmdline(tmp_cmdline, append);
+ if (tmp_cmdline)
+ free(tmp_cmdline);
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) + 1;
+ } else {
+ command_line = strdup("\0");
+ command_line_len = 1;
+ }
+ ramdisk_buf = 0;
+ if (ramdisk)
+ ramdisk_buf = slurp_file(ramdisk, &ramdisk_length);
+
+ if (entry_16bit || entry_32bit)
+ result = do_bzImage_load(info, buf, len, command_line,
+ command_line_len, ramdisk_buf,
+ ramdisk_length, 0, 0, entry_16bit);
+ else
+ result = do_bzImage64_load(info, buf, len, command_line,
+ command_line_len, ramdisk_buf,
+ ramdisk_length);
+
+ free(command_line);
+ return result;
+}
diff --git a/kexec/arch/x86_64/kexec-elf-rel-x86_64.c b/kexec/arch/x86_64/kexec-elf-rel-x86_64.c
new file mode 100644
index 0000000..0d22f3b
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-elf-rel-x86_64.c
@@ -0,0 +1,94 @@
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2LSB) {
+ return 0;
+ }
+ if (ehdr->ei_class != ELFCLASS64 &&
+ ehdr->ei_class != ELFCLASS32) { /* x32 */
+ return 0;
+ }
+ if (ehdr->e_machine != EM_X86_64) {
+ return 0;
+ }
+ return 1;
+}
+
+static const char *reloc_name(unsigned long r_type)
+{
+ static const char *r_name[] = {
+ "R_X86_64_NONE",
+ "R_X86_64_64",
+ "R_X86_64_PC32",
+ "R_X86_64_GOT32",
+ "R_X86_64_PLT32",
+ "R_X86_64_COPY",
+ "R_X86_64_GLOB_DAT",
+ "R_X86_64_JUMP_SLOT",
+ "R_X86_64_RELATIVE",
+ "R_X86_64_GOTPCREL",
+ "R_X86_64_32",
+ "R_X86_64_32S",
+ "R_X86_64_16",
+ "R_X86_64_PC16",
+ "R_X86_64_8",
+ "R_X86_64_PC8",
+ "R_X86_64_DTPMOD64",
+ "R_X86_64_DTPOFF64",
+ "R_X86_64_TPOFF64",
+ "R_X86_64_TLSGD",
+ "R_X86_64_TLSLD",
+ "R_X86_64_DTPOFF32",
+ "R_X86_64_GOTTPOFF",
+ "R_X86_64_TPOFF32",
+ };
+ static char buf[100];
+ const char *name;
+ if (r_type < (sizeof(r_name)/sizeof(r_name[0]))){
+ name = r_name[r_type];
+ }
+ else {
+ sprintf(buf, "R_X86_64_%lu", r_type);
+ name = buf;
+ }
+ return name;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym), unsigned long r_type, void *location,
+ unsigned long address, unsigned long value)
+{
+ dbgprintf("%s\n", reloc_name(r_type));
+ switch(r_type) {
+ case R_X86_64_NONE:
+ break;
+ case R_X86_64_64:
+ *(uint64_t *)location = value;
+ break;
+ case R_X86_64_32:
+ *(uint32_t *)location = value;
+ if (value != *(uint32_t *)location)
+ goto overflow;
+ break;
+ case R_X86_64_32S:
+ *(uint32_t *)location = value;
+ if ((int64_t)value != *(int32_t *)location)
+ goto overflow;
+ break;
+ case R_X86_64_PC32:
+ case R_X86_64_PLT32:
+ *(uint32_t *)location = value - address;
+ break;
+ default:
+ die("Unhandled rela relocation: %s\n", reloc_name(r_type));
+ break;
+ }
+ return;
+ overflow:
+ die("overflow in relocation type %s val %lx\n",
+ reloc_name(r_type), value);
+}
diff --git a/kexec/arch/x86_64/kexec-elf-x86_64.c b/kexec/arch/x86_64/kexec-elf-x86_64.c
new file mode 100644
index 0000000..7f9540a
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-elf-x86_64.c
@@ -0,0 +1,257 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <x86/x86-linux.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-elf-boot.h"
+#include "../i386/x86-linux-setup.h"
+#include "kexec-x86_64.h"
+#include "../i386/kexec-x86.h"
+#include "../i386/crashdump-x86.h"
+#include <arch/options.h>
+
+int elf_x86_64_probe(const char *buf, off_t len)
+{
+ return elf_x86_any_probe(buf, len, CORE_TYPE_ELF64);
+}
+
+void elf_x86_64_usage(void)
+{
+ printf( " --command-line=STRING Set the kernel command line to STRING\n"
+ " --append=STRING Set the kernel command line to STRING\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --args-linux Pass linux kernel style options\n"
+ " --args-elf Pass elf boot notes\n"
+ " --args-none Jump directly from the kernel\n"
+ );
+}
+
+int elf_x86_64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ const char *append = NULL;
+ char *command_line = NULL, *modified_cmdline;
+ char *tmp_cmdline = NULL;
+ int command_line_len;
+ const char *ramdisk;
+ unsigned long entry, max_addr;
+ int arg_style;
+#define ARG_STYLE_ELF 0
+#define ARG_STYLE_LINUX 1
+#define ARG_STYLE_NONE 2
+ int opt;
+ int result = 0;
+ const char *error_msg = NULL;
+
+ /* See options.h and add any new options there too! */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, NULL, OPT_APPEND },
+ { "append", 1, NULL, OPT_APPEND },
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE },
+ { "initrd", 1, NULL, OPT_RAMDISK },
+ { "ramdisk", 1, NULL, OPT_RAMDISK },
+ { "args-elf", 0, NULL, OPT_ARGS_ELF },
+ { "args-linux", 0, NULL, OPT_ARGS_LINUX },
+ { "args-none", 0, NULL, OPT_ARGS_NONE },
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+
+ /*
+ * Parse the command line arguments
+ */
+ arg_style = ARG_STYLE_ELF;
+ modified_cmdline = 0;
+ ramdisk = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ fprintf(stderr, "Unknown option: opt: %d\n", opt);
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_ARGS_ELF:
+ arg_style = ARG_STYLE_ELF;
+ break;
+ case OPT_ARGS_LINUX:
+ arg_style = ARG_STYLE_LINUX;
+ break;
+ case OPT_ARGS_NONE:
+#ifdef __x86_64__
+ arg_style = ARG_STYLE_NONE;
+#else
+ die("--args-none only works on arch x86_64\n");
+#endif
+ break;
+ }
+ }
+ command_line = concat_cmdline(tmp_cmdline, append);
+ if (tmp_cmdline)
+ free(tmp_cmdline);
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) +1;
+ }
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (command_line) {
+ strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+ }
+
+ /* Load the ELF executable */
+ elf_exec_build_load(info, &ehdr, buf, len, 0);
+
+ entry = ehdr.e_entry;
+ max_addr = elf_max_addr(&ehdr);
+
+ /* Do we want arguments? */
+ if (arg_style != ARG_STYLE_NONE) {
+ /* Load the setup code */
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ 0, ULONG_MAX, 1, 0);
+ }
+ if (arg_style == ARG_STYLE_NONE) {
+ info->entry = (void *)entry;
+
+ }
+ else if (arg_style == ARG_STYLE_ELF) {
+ unsigned long note_base;
+ struct entry64_regs regs;
+
+ /* Setup the ELF boot notes */
+ note_base = elf_boot_notes(info, max_addr, command_line, command_line_len);
+
+ /* Initialize the registers */
+ elf_rel_get_symbol(&info->rhdr, "entry64_regs", &regs, sizeof(regs));
+ regs.rdi = note_base; /* The notes (arg1) */
+ regs.rip = entry; /* The entry point */
+ regs.rsp = elf_rel_get_addr(&info->rhdr, "stack_end"); /* Stack, unused */
+ elf_rel_set_symbol(&info->rhdr, "entry64_regs", &regs, sizeof(regs));
+
+ if (ramdisk) {
+ error_msg = "Ramdisks not supported with generic elf arguments";
+ goto out;
+ }
+ }
+ else if (arg_style == ARG_STYLE_LINUX) {
+ struct x86_linux_faked_param_header *hdr;
+ unsigned long param_base;
+ char *ramdisk_buf;
+ off_t ramdisk_length;
+ struct entry64_regs regs;
+ int rc=0;
+
+ /* Get the linux parameter header */
+ hdr = xmalloc(sizeof(*hdr));
+ param_base = add_buffer(info, hdr, sizeof(*hdr), sizeof(*hdr),
+ 16, 0, max_addr, 1);
+
+ /* Initialize the parameter header */
+ memset(hdr, 0, sizeof(*hdr));
+ init_linux_parameters(&hdr->hdr);
+
+ /* Add a ramdisk to the current image */
+ ramdisk_buf = 0;
+ ramdisk_length = 0;
+ if (ramdisk) {
+ ramdisk_buf = slurp_file(ramdisk, &ramdisk_length);
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created. */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ rc = load_crashdump_segments(info, modified_cmdline,
+ max_addr, 0);
+ if (rc < 0) {
+ result = -1;
+ goto out;
+ }
+ /* Use new command line. */
+ free(command_line);
+ command_line = modified_cmdline;
+ command_line_len = strlen(modified_cmdline) + 1;
+ modified_cmdline = NULL;
+ }
+
+ /* Tell the kernel what is going on */
+ setup_linux_bootloader_parameters(info, &hdr->hdr, param_base,
+ offsetof(struct x86_linux_faked_param_header, command_line),
+ command_line, command_line_len,
+ ramdisk_buf, ramdisk_length);
+
+ /* Fill in the information bios calls would usually provide */
+ setup_linux_system_parameters(info, &hdr->hdr);
+
+ /* Initialize the registers */
+ elf_rel_get_symbol(&info->rhdr, "entry64_regs", &regs, sizeof(regs));
+ regs.rbx = 0; /* Bootstrap processor */
+ regs.rsi = param_base; /* Pointer to the parameters */
+ regs.rip = entry; /* the entry point */
+ regs.rsp = elf_rel_get_addr(&info->rhdr, "stack_end"); /* Stack, unused */
+ elf_rel_set_symbol(&info->rhdr, "entry64_regs", &regs, sizeof(regs));
+ }
+ else {
+ error_msg = "Unknown argument style\n";
+ }
+
+out:
+ free(command_line);
+ free(modified_cmdline);
+ if (error_msg)
+ die("%s", error_msg);
+ return result;
+}
diff --git a/kexec/arch/x86_64/kexec-x86_64.c b/kexec/arch/x86_64/kexec-x86_64.c
new file mode 100644
index 0000000..ffd84f0
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-x86_64.c
@@ -0,0 +1,190 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003,2004 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-x86_64.h"
+#include "../i386/crashdump-x86.h"
+#include <arch/options.h>
+
+struct file_type file_type[] = {
+ { "multiboot2-x86", multiboot2_x86_probe, multiboot2_x86_load,
+ multiboot2_x86_usage },
+ { "elf-x86_64", elf_x86_64_probe, elf_x86_64_load, elf_x86_64_usage },
+ { "multiboot-x86", multiboot_x86_probe, multiboot_x86_load,
+ multiboot_x86_usage },
+ { "elf-x86", elf_x86_probe, elf_x86_load, elf_x86_usage },
+ { "bzImage64", bzImage64_probe, bzImage64_load, bzImage64_usage },
+ { "bzImage", bzImage_probe, bzImage_load, bzImage_usage },
+ { "beoboot-x86", beoboot_probe, beoboot_load, beoboot_usage },
+ { "nbi-x86", nbi_probe, nbi_load, nbi_usage },
+};
+int file_types = sizeof(file_type)/sizeof(file_type[0]);
+
+
+void arch_usage(void)
+{
+ printf(
+ " --reset-vga Attempt to reset a standard vga device\n"
+ " --serial=<port> Specify the serial port for debug output\n"
+ " --serial-baud=<baud_rate> Specify the serial port baud rate\n"
+ " --console-vga Enable the vga console\n"
+ " --console-serial Enable the serial console\n"
+ " --pass-memmap-cmdline Pass memory map via command line in kexec on panic case\n"
+ " --noefi Disable efi support\n"
+ " --reuse-video-type Reuse old boot time video type blindly\n"
+ );
+}
+
+struct arch_options_t arch_options = {
+ .reset_vga = 0,
+ .serial_base = 0x3f8,
+ .serial_baud = 0,
+ .console_vga = 0,
+ .console_serial = 0,
+ .core_header_type = CORE_TYPE_ELF64,
+ .pass_memmap_cmdline = 0,
+ .noefi = 0,
+ .reuse_video_type = 0,
+};
+
+int arch_process_options(int argc, char **argv)
+{
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+ int opt;
+ unsigned long value;
+ char *end;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ break;
+ case OPT_RESET_VGA:
+ arch_options.reset_vga = 1;
+ break;
+ case OPT_CONSOLE_VGA:
+ arch_options.console_vga = 1;
+ break;
+ case OPT_CONSOLE_SERIAL:
+ arch_options.console_serial = 1;
+ break;
+ case OPT_SERIAL:
+ value = ULONG_MAX;
+ if (strcmp(optarg, "ttyS0") == 0) {
+ value = 0x3f8;
+ }
+ else if (strcmp(optarg, "ttyS1") == 0) {
+ value = 0x2f8;
+ }
+ else if (strncmp(optarg, "0x", 2) == 0) {
+ value = strtoul(optarg +2, &end, 16);
+ if (*end != '\0') {
+ value = ULONG_MAX;
+ }
+ }
+ if (value >= 65536) {
+ fprintf(stderr, "Bad serial port base '%s'\n",
+ optarg);
+ usage();
+ return -1;
+
+ }
+ arch_options.serial_base = value;
+ break;
+ case OPT_SERIAL_BAUD:
+ value = strtoul(optarg, &end, 0);
+ if ((value > 115200) || ((115200 %value) != 0) ||
+ (value < 9600) || (*end))
+ {
+ fprintf(stderr, "Bad serial port baud rate '%s'\n",
+ optarg);
+ usage();
+ return -1;
+
+ }
+ arch_options.serial_baud = value;
+ break;
+ case OPT_PASS_MEMMAP_CMDLINE:
+ arch_options.pass_memmap_cmdline = 1;
+ break;
+ case OPT_NOEFI:
+ arch_options.noefi = 1;
+ break;
+ case OPT_REUSE_VIDEO_TYPE:
+ arch_options.reuse_video_type = 1;
+ break;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "x86_64", KEXEC_ARCH_X86_64 },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *info)
+{
+ uint8_t panic_kernel = 0;
+
+ elf_rel_set_symbol(&info->rhdr, "reset_vga",
+ &arch_options.reset_vga, sizeof(arch_options.reset_vga));
+ elf_rel_set_symbol(&info->rhdr, "serial_base",
+ &arch_options.serial_base, sizeof(arch_options.serial_base));
+ elf_rel_set_symbol(&info->rhdr, "serial_baud",
+ &arch_options.serial_baud, sizeof(arch_options.serial_baud));
+ elf_rel_set_symbol(&info->rhdr, "console_vga",
+ &arch_options.console_vga, sizeof(arch_options.console_vga));
+ elf_rel_set_symbol(&info->rhdr, "console_serial",
+ &arch_options.console_serial, sizeof(arch_options.console_serial));
+ elf_rel_set_symbol(&info->rhdr, "backup_src_start",
+ &info->backup_src_start, sizeof(info->backup_src_start));
+ elf_rel_set_symbol(&info->rhdr, "backup_src_size",
+ &info->backup_src_size, sizeof(info->backup_src_size));
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ panic_kernel = 1;
+ elf_rel_set_symbol(&info->rhdr, "backup_start",
+ &info->backup_start, sizeof(info->backup_start));
+ }
+ elf_rel_set_symbol(&info->rhdr, "panic_kernel",
+ &panic_kernel, sizeof(panic_kernel));
+}
diff --git a/kexec/arch/x86_64/kexec-x86_64.h b/kexec/arch/x86_64/kexec-x86_64.h
new file mode 100644
index 0000000..21c3a73
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-x86_64.h
@@ -0,0 +1,41 @@
+#ifndef KEXEC_X86_64_H
+#define KEXEC_X86_64_H
+
+#include "../i386/kexec-x86.h"
+
+struct entry64_regs {
+ uint64_t rax;
+ uint64_t rbx;
+ uint64_t rcx;
+ uint64_t rdx;
+ uint64_t rsi;
+ uint64_t rdi;
+ uint64_t rsp;
+ uint64_t rbp;
+ uint64_t r8;
+ uint64_t r9;
+ uint64_t r10;
+ uint64_t r11;
+ uint64_t r12;
+ uint64_t r13;
+ uint64_t r14;
+ uint64_t r15;
+ uint64_t rip;
+};
+
+int elf_x86_64_probe(const char *buf, off_t len);
+int elf_x86_64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_x86_64_usage(void);
+
+int bzImage64_probe(const char *buf, off_t len);
+int bzImage64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void bzImage64_usage(void);
+
+int multiboot2_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void multiboot2_x86_usage(void);
+int multiboot2_x86_probe(const char *buf, off_t buf_len);
+
+#endif /* KEXEC_X86_64_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 18:01:31 +0000