kexec-tools/sw64.patch

diff --git a/config/config.guess b/config/config.guess
index c626f7a..b017a9e 100755
--- a/config/config.guess
+++ b/config/config.guess
@@ -937,6 +937,11 @@ EOF
 	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
+    sw_64:Linux:*:*)
+	objdump --private-headers /bin/sh | grep -q ld.so.1
+	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
+	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+	exit ;;
     arc:Linux:*:* | arceb:Linux:*:*)
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
diff --git a/config/config.sub b/config/config.sub
index dae00e6..d6ff133 100755
--- a/config/config.sub
+++ b/config/config.sub
@@ -1241,6 +1241,7 @@ case $cpu-$vendor in
 			| sparclite \
 			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
 			| spu \
+			| sw_64 \
 			| tahoe \
 			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
 			| tron \
diff --git a/configure.ac b/configure.ac
index 767574e..ff595f8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -52,7 +52,7 @@ case $target_cpu in
 	cris|crisv32 )
 		ARCH="cris"
 		;;
-	ia64|x86_64|alpha|m68k )
+	ia64|x86_64|alpha|m68k|sw_64 )
 		ARCH="$target_cpu"
 		;;
 	hppa*)
diff --git a/include/elf.h b/include/elf.h
index 1c8d2cc..93eb69d 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -267,6 +267,7 @@ typedef struct
    chances of collision with official or non-GNU unofficial values.  */
 
 #define EM_ALPHA	0x9026
+#define EM_SW_64	0x9916
 
 /* Legal values for e_version (version).  */
 
diff --git a/kexec/Makefile b/kexec/Makefile
index 8a52e8d..5a102b7 100644
--- a/kexec/Makefile
+++ b/kexec/Makefile
@@ -90,6 +90,7 @@ include $(srcdir)/kexec/arch/ppc/Makefile
 include $(srcdir)/kexec/arch/ppc64/Makefile
 include $(srcdir)/kexec/arch/s390/Makefile
 include $(srcdir)/kexec/arch/sh/Makefile
+include $(srcdir)/kexec/arch/sw_64/Makefile
 include $(srcdir)/kexec/arch/x86_64/Makefile
 include $(srcdir)/kexec/arch/hppa/Makefile
 include $(srcdir)/kexec/arch/loongarch/Makefile
diff --git a/kexec/arch/sw_64/Makefile b/kexec/arch/sw_64/Makefile
new file mode 100644
index 0000000..753c43c
--- /dev/null
+++ b/kexec/arch/sw_64/Makefile
@@ -0,0 +1,16 @@
+#
+# kexec sw_64 (linux booting linux)
+#
+sw_64_KEXEC_SRCS =  kexec/arch/sw_64/kexec-sw_64.c
+sw_64_KEXEC_SRCS += kexec/arch/sw_64/kexec-elf-sw_64.c
+sw_64_KEXEC_SRCS += kexec/arch/sw_64/kexec-elf-rel-sw_64.c
+sw_64_KEXEC_SRCS += kexec/arch/sw_64/crashdump-sw_64.c
+
+sw_64_ADD_BUFFER =
+sw_64_ADD_SEGMENT =
+sw_64_VIRT_TO_PHYS =
+
+dist += kexec/arch/sw_64/Makefile $(sw_64_KEXEC_SRCS)			\
+	kexec/arch/sw_64/kexec-sw_64.h					\
+	kexec/arch/sw_64/crashdump-sw_64.h				\
+	kexec/arch/sw_64/include/arch/options.h
diff --git a/kexec/arch/sw_64/crashdump-sw_64.c b/kexec/arch/sw_64/crashdump-sw_64.c
new file mode 100644
index 0000000..1e8237c
--- /dev/null
+++ b/kexec/arch/sw_64/crashdump-sw_64.c
@@ -0,0 +1,352 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * 2005 (C) IBM Corporation.
+ * 2008 (C) MontaVista Software, Inc.
+ *
+ * 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 <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <inttypes.h>
+#include <elf.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "../../crashdump.h"
+#include "kexec-sw_64.h"
+#include "crashdump-sw_64.h"
+#include "unused.h"
+
+/* Stores a sorted list of RAM memory ranges for which to create elf headers.
+ * A separate program header is created for backup region */
+static struct memory_range crash_memory_range[CRASH_MAX_MEMORY_RANGES];
+
+/* Not used currently but required by generic fs2dt code */
+struct memory_ranges usablemem_rgns;
+
+/* Memory region reserved for storing panic kernel and other data. */
+struct memory_range crash_reserved_mem;
+
+/* Read kernel physical load addr from the file returned by proc_iomem()
+ * (Kernel Code) and store in kexec_info */
+static int get_kernel_paddr(struct crash_elf_info *elf_info)
+{
+	uint64_t start;
+
+	if (xen_present()) /* Kernel not entity mapped under Xen */
+		return 0;
+
+	if (parse_iomem_single("Kernel code\n", &start, NULL) == 0) {
+		elf_info->kern_paddr_start = start;
+		dbgprintf("kernel load physical addr start = 0x%" PRIu64 "\n", start);
+		return 0;
+	}
+
+	fprintf(stderr, "Cannot determine kernel physical load addr\n");
+	return -1;
+}
+
+static int get_kernel_vaddr_and_size(struct crash_elf_info *elf_info,
+				     unsigned long start_offset)
+{
+	uint64_t end;
+
+	if (!elf_info->kern_paddr_start)
+		return -1;
+
+	elf_info->kern_vaddr_start = elf_info->kern_paddr_start |
+					start_offset;
+	/* If "Kernel bss" exists, the kernel ends there, else fall
+	 *  through and say that it ends at "Kernel data" */
+	if (parse_iomem_single("Kernel bss\n", NULL, &end) == 0 ||
+	    parse_iomem_single("Kernel data\n", NULL, &end) == 0) {
+		elf_info->kern_size = end - elf_info->kern_paddr_start;
+		dbgprintf("kernel_vaddr= 0x%llx paddr %llx\n",
+				elf_info->kern_vaddr_start,
+				elf_info->kern_paddr_start);
+		dbgprintf("kernel size = 0x%lx\n", elf_info->kern_size);
+		return 0;
+	}
+	fprintf(stderr, "Cannot determine kernel virtual load addr and  size\n");
+	return -1;
+}
+
+/* Removes crash reserve region from list of memory chunks for whom elf program
+ * headers have to be created. Assuming crash reserve region to be a single
+ * continuous area fully contained inside one of the memory chunks */
+static int exclude_crash_reserve_region(int *nr_ranges)
+{
+	int i, j, tidx = -1;
+	unsigned long long cstart, cend;
+	struct memory_range temp_region = {
+		.start = 0,
+		.end = 0
+	};
+
+	/* Crash reserved region. */
+	cstart = crash_reserved_mem.start;
+	cend = crash_reserved_mem.end;
+
+	for (i = 0; i < (*nr_ranges); i++) {
+		unsigned long long mstart, mend;
+		mstart = crash_memory_range[i].start;
+		mend = crash_memory_range[i].end;
+		if (cstart < mend && cend > mstart) {
+			if (cstart != mstart && cend != mend) {
+				/* Split memory region */
+				crash_memory_range[i].end = cstart - 1;
+				temp_region.start = cend + 1;
+				temp_region.end = mend;
+				temp_region.type = RANGE_RAM;
+				tidx = i+1;
+			} else if (cstart != mstart)
+				crash_memory_range[i].end = cstart - 1;
+			else
+				crash_memory_range[i].start = cend + 1;
+		}
+	}
+	/* Insert split memory region, if any. */
+	if (tidx >= 0) {
+		if (*nr_ranges == CRASH_MAX_MEMORY_RANGES) {
+			/* No space to insert another element. */
+			fprintf(stderr, "Error: Number of crash memory ranges"
+					" excedeed the max limit\n");
+			return -1;
+		}
+		for (j = (*nr_ranges - 1); j >= tidx; j--)
+			crash_memory_range[j+1] = crash_memory_range[j];
+		crash_memory_range[tidx].start = temp_region.start;
+		crash_memory_range[tidx].end = temp_region.end;
+		crash_memory_range[tidx].type = temp_region.type;
+		(*nr_ranges)++;
+	}
+	return 0;
+}
+/* Reads the appropriate file and retrieves the SYSTEM RAM regions for whom to
+ * create Elf headers. Keeping it separate from get_memory_ranges() as
+ * requirements are different in the case of normal kexec and crashdumps.
+ *
+ * Normal kexec needs to look at all of available physical memory irrespective
+ * of the fact how much of it is being used by currently running kernel.
+ * Crashdumps need to have access to memory regions actually being used by
+ * running  kernel. Expecting a different file/data structure than /proc/iomem
+ * to look into down the line. May be something like /proc/kernelmem or may
+ * be zone data structures exported from kernel.
+ */
+static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
+{
+	const char iomem[] = "/proc/iomem";
+	int memory_ranges = 0;
+	char line[MAX_LINE];
+	FILE *fp;
+	unsigned long long start, end;
+
+	fp = fopen(iomem, "r");
+	if (!fp) {
+		fprintf(stderr, "Cannot open %s: %s\n",
+			iomem, strerror(errno));
+		return -1;
+	}
+	/* Separate segment for backup region */
+	crash_memory_range[0].start = BACKUP_SRC_START;
+	crash_memory_range[0].end = BACKUP_SRC_END;
+	crash_memory_range[0].type = RANGE_RAM;
+	memory_ranges++;
+
+	while (fgets(line, sizeof(line), fp) != 0) {
+		char *str;
+		int type, consumed, count;
+		if (memory_ranges >= CRASH_MAX_MEMORY_RANGES)
+			break;
+		count = sscanf(line, "%llx-%llx : %n",
+			&start, &end, &consumed);
+		if (count != 2)
+			continue;
+		str = line + consumed;
+
+		/* Only Dumping memory of type System RAM. */
+		if (memcmp(str, "System RAM\n", 11) == 0) {
+			type = RANGE_RAM;
+		} else if (memcmp(str, "Crash kernel\n", 13) == 0) {
+				/* Reserved memory region. New kernel can
+				 * use this region to boot into. */
+				crash_reserved_mem.start = start;
+				crash_reserved_mem.end = end;
+				crash_reserved_mem.type = RANGE_RAM;
+				continue;
+		} else
+			continue;
+
+		if (start == BACKUP_SRC_START && end >= (BACKUP_SRC_END + 1))
+			start = BACKUP_SRC_END + 1;
+
+		crash_memory_range[memory_ranges].start = start;
+		crash_memory_range[memory_ranges].end = end;
+		crash_memory_range[memory_ranges].type = type;
+		memory_ranges++;
+
+		/* Segregate linearly mapped region. */
+		if (MAXMEM && (MAXMEM - 1) >= start && (MAXMEM - 1) <= end) {
+			crash_memory_range[memory_ranges - 1].end = MAXMEM - 1;
+
+			/* Add segregated region. */
+			crash_memory_range[memory_ranges].start = MAXMEM;
+			crash_memory_range[memory_ranges].end = end;
+			crash_memory_range[memory_ranges].type = type;
+			memory_ranges++;
+		}
+	}
+	fclose(fp);
+
+	if (exclude_crash_reserve_region(&memory_ranges) < 0)
+		return -1;
+
+	*range = crash_memory_range;
+	*ranges = memory_ranges;
+	return 0;
+}
+
+/* Adds the appropriate mem= options to command line, indicating the
+ * memory region the new kernel can use to boot into. */
+static int cmdline_add_mem(char *cmdline, unsigned long addr,
+		unsigned long size)
+{
+	int cmdlen, len;
+	char str[50], *ptr;
+
+	addr = addr/1024;
+	size = size/1024;
+	ptr = str;
+	strcpy(str, " mem=");
+	ptr += strlen(str);
+	ultoa(size, ptr);
+	strcat(str, "K@");
+	ptr = str + strlen(str);
+	ultoa(addr, ptr);
+	strcat(str, "K");
+	len = strlen(str);
+	cmdlen = strlen(cmdline) + len;
+	if (cmdlen > (COMMAND_LINE_SIZE - 1))
+		die("Command line overflow\n");
+	strcat(cmdline, str);
+
+	return 0;
+}
+
+/* Adds the elfcorehdr= command line parameter to command line. */
+static int cmdline_add_elfcorehdr(char *cmdline, unsigned long addr)
+{
+	int cmdlen, len, align = 1024;
+	char str[30], *ptr;
+
+	/* Passing in elfcorehdr=xxxK format. Saves space required in cmdline.
+	 * Ensure 1K alignment*/
+	if (addr%align)
+		return -1;
+	addr = addr/align;
+	ptr = str;
+	strcpy(str, " elfcorehdr=");
+	ptr += strlen(str);
+	ultoa(addr, ptr);
+	strcat(str, "K");
+	len = strlen(str);
+	cmdlen = strlen(cmdline) + len;
+	if (cmdlen > (COMMAND_LINE_SIZE - 1))
+		die("Command line overflow\n");
+	strcat(cmdline, str);
+	return 0;
+}
+
+static struct crash_elf_info elf_info64 = {
+	class: ELFCLASS64,
+	data : ELFDATA2LSB,
+	machine : EM_SW_64,
+	page_offset : PAGE_OFFSET,
+	lowmem_limit : 0, /* 0 == no limit */
+};
+
+
+/* Loads additional segments in case of a panic kernel is being loaded.
+ * One segment for backup region, another segment for storing elf headers
+ * for crash memory image.
+ */
+int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline,
+				unsigned long UNUSED(max_addr),
+				unsigned long UNUSED(min_base))
+{
+	void *tmp;
+	unsigned long sz, elfcorehdr;
+	int nr_ranges, align = 1024;
+	struct memory_range *mem_range;
+	struct crash_elf_info * elf_info = &elf_info64;
+
+	if (get_kernel_paddr(elf_info))
+		return -1;
+
+	if (get_kernel_vaddr_and_size(elf_info, START_OFFSET))
+		return -1;
+
+	if (get_crash_memory_ranges(&mem_range, &nr_ranges) < 0)
+		return -1;
+
+	info->backup_src_start = BACKUP_SRC_START;
+	info->backup_src_size = BACKUP_SRC_SIZE;
+	/* Create a backup region segment to store backup data*/
+	sz = _ALIGN(BACKUP_SRC_SIZE, align);
+	tmp = xmalloc(sz);
+	memset(tmp, 0, sz);
+	info->backup_start = add_buffer(info, tmp, sz, sz, align,
+				crash_reserved_mem.start,
+				crash_reserved_mem.end, -1);
+
+	if (crash_create_elf64_headers(info, elf_info, crash_memory_range, nr_ranges,
+			 &tmp, &sz, ELF_CORE_HEADER_ALIGN) < 0)
+		return -1;
+	elfcorehdr = add_buffer(info, tmp, sz, sz, align,
+		crash_reserved_mem.start,
+		crash_reserved_mem.end, -1);
+
+	/*
+	 * backup segment is after elfcorehdr, so use elfcorehdr as top of
+	 * kernel's available memory
+	 */
+	cmdline_add_mem(mod_cmdline, crash_reserved_mem.start,
+		elfcorehdr - crash_reserved_mem.start);
+	cmdline_add_elfcorehdr(mod_cmdline, elfcorehdr);
+
+	dbgprintf("CRASH MEMORY RANGES:\n");
+	dbgprintf("%016Lx-%016Lx\n", crash_reserved_mem.start,
+			crash_reserved_mem.end);
+	return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+	uint64_t start, end;
+
+	return parse_iomem_single("Crash kernel\n", &start, &end) == 0 ?
+		(start != end) : 0;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+	return parse_iomem_single("Crash kernel\n", start, end);
+}
diff --git a/kexec/arch/sw_64/crashdump-sw_64.h b/kexec/arch/sw_64/crashdump-sw_64.h
new file mode 100644
index 0000000..65d92bc
--- /dev/null
+++ b/kexec/arch/sw_64/crashdump-sw_64.h
@@ -0,0 +1,27 @@
+#ifndef CRASHDUMP_SW_64_H
+#define CRASHDUMP_SW_64_H
+
+struct kexec_info;
+int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline,
+				unsigned long max_addr, unsigned long min_base);
+
+#define PAGE_OFFSET	0xfff0000000000000UL
+#define MAXMEM		0
+#define __pa(x)		((unsigned long)(X) & ~PAGE_OFFSET)
+
+
+#define CRASH_MAX_MEMMAP_NR	(KEXEC_MAX_SEGMENTS + 1)
+#define CRASH_MAX_MEMORY_RANGES	(MAX_MEMORY_RANGES + 2)
+
+#define COMMAND_LINE_SIZE	2048
+
+/* Backup Region, First 1M of System RAM. */
+#define BACKUP_SRC_START	0x00000000
+#define BACKUP_SRC_END		0x000fffff
+#define BACKUP_SRC_SIZE	(BACKUP_SRC_END - BACKUP_SRC_START + 1)
+
+/* Kernel text size */
+#define SW64_KERNEL_TEXT_SIZE  (512UL*1024*1024)
+
+extern struct arch_options_t arch_options;
+#endif /* CRASHDUMP_SW_64_H */
diff --git a/kexec/arch/sw_64/include/arch/options.h b/kexec/arch/sw_64/include/arch/options.h
new file mode 100644
index 0000000..1214d4b
--- /dev/null
+++ b/kexec/arch/sw_64/include/arch/options.h
@@ -0,0 +1,41 @@
+#ifndef KEXEC_ARCH_SW_64_OPTIONS_H
+#define KEXEC_ARCH_SW_64_OPTIONS_H
+
+#define OPT_ARCH_MAX	(OPT_MAX+0)
+#define OPT_APPEND	(OPT_ARCH_MAX+0)
+#define OPT_DTB		(OPT_ARCH_MAX+1)
+#define OPT_RAMDISK	(OPT_ARCH_MAX+2)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+	KEXEC_OPTIONS \
+	{"command-line", 1, 0, OPT_APPEND}, \
+	{"append",	 1, 0, OPT_APPEND}, \
+	{"dtb",		1, 0, OPT_DTB }, \
+	{"initrd",	1, 0, OPT_RAMDISK },
+
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o	main() uses this complete list to scan for its options, ignoring
+ *	arch-specific/loader-specific ones.
+ * o	Then, arch_process_options() uses this complete list to scan for its
+ *	options, ignoring general/loader-specific ones.
+ * o	Then, the file_type[n].load re-scans for options, using
+ *	KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ *	Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS			\
+	KEXEC_ARCH_OPTIONS
+
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+#endif /* KEXEC_ARCH_SW_64_OPTIONS_H */
diff --git a/kexec/arch/sw_64/kexec-elf-rel-sw_64.c b/kexec/arch/sw_64/kexec-elf-rel-sw_64.c
new file mode 100644
index 0000000..aeaa966
--- /dev/null
+++ b/kexec/arch/sw_64/kexec-elf-rel-sw_64.c
@@ -0,0 +1,46 @@
+/*
+ * kexec-elf-rel-sw_64.c - kexec Elf relocation routines
+ * Copyright (C) 2007 Francesco Chiechi, Alessandro Rubini
+ * Copyright (C) 2007 Tvblob s.r.l.
+ *
+ * derived from ../ppc/kexec-elf-rel-ppc.c
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+*/
+
+#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) {
+		return 0;
+	}
+	if (ehdr->e_machine != EM_SW_64) {
+		return 0;
+	}
+	return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+			   struct mem_sym *UNUSED(sym),
+			   unsigned long r_type,
+			   void *UNUSED(location),
+			   unsigned long UNUSED(address),
+			   unsigned long UNUSED(value))
+{
+	switch(r_type) {
+
+	default:
+		die("Unknown rela relocation: %lu\n", r_type);
+		break;
+	}
+	return;
+}
diff --git a/kexec/arch/sw_64/kexec-elf-sw_64.c b/kexec/arch/sw_64/kexec-elf-sw_64.c
new file mode 100644
index 0000000..ea99e26
--- /dev/null
+++ b/kexec/arch/sw_64/kexec-elf-sw_64.c
@@ -0,0 +1,212 @@
+/*
+ * kexec-elf-sw_64.c - kexec Elf loader for sw_64
+ * Copyright (C) 2007 Francesco Chiechi, Alessandro Rubini
+ * Copyright (C) 2007 Tvblob s.r.l.
+ *
+ * derived from ../ppc/kexec-elf-ppc.c
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+*/
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.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 "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-sw_64.h"
+#include "crashdump-sw_64.h"
+#include <arch/options.h>
+#include "../../fs2dt.h"
+#include "../../dt-ops.h"
+
+extern struct memory_range crash_reserved_mem;
+
+static const int probe_debug = 0;
+
+#define BOOTLOADER         "kexec"
+#define UPSZ(X) _ALIGN_UP(sizeof(X), 4)
+
+#define CMDLINE_PREFIX "kexec "
+static char cmdline_buf[COMMAND_LINE_SIZE] = CMDLINE_PREFIX;
+
+int elf_sw_64_probe(const char *buf, off_t len)
+{
+	struct mem_ehdr ehdr;
+	int result;
+	result = build_elf_exec_info(buf, len, &ehdr, 0);
+	if (result < 0) {
+		goto out;
+	}
+
+	/* Verify the architecuture specific bits */
+	if (ehdr.e_machine != EM_SW_64) {
+		/* for a different architecture */
+		if (probe_debug) {
+			fprintf(stderr, "Not for this architecture.\n");
+		}
+		result = -1;
+		goto out;
+	}
+	result = 0;
+ out:
+	free_elf_info(&ehdr);
+	return result;
+}
+
+void elf_sw_64_usage(void)
+{
+}
+
+#define INITRD_START_OFFSET     0x100
+#define INITRD_SIZE_OFFSET      0x108
+#define COMMAND_LINE_OFFSET     0x1000
+
+int elf_sw_64_load(int argc, char **argv, const char *buf, off_t len,
+	struct kexec_info *info)
+{
+	struct mem_ehdr ehdr;
+	int command_line_len = 0;
+	char *crash_cmdline;
+	int result;
+	unsigned long cmdline_addr;
+	size_t i;
+	off_t dtb_length = 0;
+	//char *dtb_buf = NULL;
+	char *initrd_buf = NULL;
+	char * param_page = NULL;
+	unsigned long param_page_addr;
+	unsigned long long kernel_addr = 0, kernel_size = 0;
+	unsigned long pagesize = getpagesize();
+
+	/*
+	 * ZERO_PGE of SW_64, offset is 0x0A000 from CONFIG_PHYSICAL_START
+	 */
+	param_page = xmalloc(pagesize);
+	memset(param_page, 0, pagesize);
+	/* Need to append some command line parameters internally in case of
+	 * taking crash dumps.
+	 */
+	if (info->kexec_flags & KEXEC_ON_CRASH) {
+		crash_cmdline = xmalloc(COMMAND_LINE_SIZE);
+		memset((void *)crash_cmdline, 0, COMMAND_LINE_SIZE);
+	} else
+		crash_cmdline = NULL;
+
+	if (info->kexec_flags & KEXEC_ON_CRASH)
+		result = build_elf_exec_info(buf, len, &ehdr, 1);
+	else
+		result = build_elf_exec_info(buf, len, &ehdr, 0);
+
+	if (result < 0)
+		die("ELF exec parse failed\n");
+
+	/* Read in the PT_LOAD segments and remove CKSEG0 mask from address*/
+	for (i = 0; i < ehdr.e_phnum; i++) {
+		struct mem_phdr *phdr;
+		phdr = &ehdr.e_phdr[i];
+		if (phdr->p_type == PT_LOAD) {
+			phdr->p_paddr = virt_to_phys(phdr->p_paddr);
+			kernel_addr = phdr->p_paddr;
+			kernel_size = phdr->p_memsz;
+			if (!(kernel_size < SW64_KERNEL_TEXT_SIZE))
+				die("The size of second kernrl is too large, \
+					reserverd space is not enough!\n");
+		}
+	}
+	/* Load the Elf data */
+	result = elf_exec_load(&ehdr, info);
+	if (result < 0)
+		die("ELF exec load failed\n");
+
+	info->entry = (void *)virt_to_phys(ehdr.e_entry);
+
+	if (arch_options.command_line)
+		command_line_len = strlen(arch_options.command_line) + 1;
+
+	if (info->kexec_flags & KEXEC_ON_CRASH) {
+		result = load_crashdump_segments(info, crash_cmdline, 0, 0);
+		if (result < 0) {
+			free(crash_cmdline);
+			return -1;
+		}
+	}
+
+	if (arch_options.command_line)
+		strncat(cmdline_buf, arch_options.command_line, command_line_len);
+	if (crash_cmdline)
+		strncat(cmdline_buf, crash_cmdline,
+				sizeof(crash_cmdline) -
+				strlen(crash_cmdline) - 1);
+
+	if (info->kexec_flags & KEXEC_ON_CRASH)
+		/* In case of crashdump segment[0] is kernel.
+		 * Put cmdline just after it. */
+		cmdline_addr = (unsigned long)info->segment[0].mem +
+				info->segment[0].memsz;
+	else
+		cmdline_addr = 0;
+
+	param_page_addr = (unsigned long)info->segment[0].mem - 0x6000;
+	/* sw_64 systems that have been converted to use device tree
+	 * passed through UHI will use commandline in the DTB and
+	 * the DTB passed as a separate buffer. Note that
+	 * CMDLINE_PREFIX is skipped here intentionally, as it is
+	 * used only in the legacy method */
+#if 0
+	if (arch_options.dtb_file) {
+		dtb_buf = slurp_file(arch_options.dtb_file, &dtb_length);
+	} else {
+		create_flatten_tree(&dtb_buf, &dtb_length, cmdline_buf + strlen(CMDLINE_PREFIX));
+	}
+#endif
+	if (arch_options.initrd_file) {
+		initrd_buf = slurp_file(arch_options.initrd_file, &initrd_size);
+#if 0
+		/* Create initrd entries in dtb - although at this time
+		 * they would not point to the correct location */
+		dtb_set_initrd(&dtb_buf, &dtb_length, initrd_buf, initrd_buf + initrd_size);
+#endif
+		unsigned long initrd_mem_min = _ALIGN_UP(kernel_addr + kernel_size + dtb_length, pagesize);
+		if (info->kexec_flags & KEXEC_ON_CRASH)
+			initrd_base = add_buffer(info, initrd_buf, initrd_size,
+					initrd_size, sizeof(void *), initrd_mem_min, crash_reserved_mem.end, 1);
+		else
+			initrd_base = add_buffer(info, initrd_buf, initrd_size,
+					initrd_size, sizeof(void *), initrd_mem_min, 0xfffffff, 1);
+		*(unsigned long *)(param_page + INITRD_START_OFFSET) =  PAGE_OFFSET + initrd_mem_min;
+		*(unsigned long *)(param_page + INITRD_SIZE_OFFSET) = initrd_size;
+#if 0
+		/* Now that the buffer for initrd is prepared, update the dtb
+		 * with an appropriate location */
+		dtb_set_initrd(&dtb_buf, &dtb_length, initrd_base, initrd_base + initrd_size);
+#endif
+	}
+	/* COMMAND_LINE offset 0x1000 from ZERO_PGE */
+	memcpy(param_page + COMMAND_LINE_OFFSET, cmdline_buf, sizeof(cmdline_buf));
+	add_buffer(info, param_page, pagesize, pagesize, sizeof(void *),
+			param_page_addr, param_page_addr + pagesize, 1);
+#if 0
+	add_buffer(info, cmdline_buf, sizeof(cmdline_buf),
+			sizeof(cmdline_buf), sizeof(void *),
+			cmdline_addr, crash_reserved_mem.end, 1);
+
+	add_buffer(info, dtb_buf, dtb_length, dtb_length, 0,
+			_ALIGN_UP(kernel_addr + kernel_size, pagesize),
+			crash_reserved_mem.end, 1);
+#endif
+	return 0;
+}
+
diff --git a/kexec/arch/sw_64/kexec-sw_64.c b/kexec/arch/sw_64/kexec-sw_64.c
new file mode 100644
index 0000000..b9fe106
--- /dev/null
+++ b/kexec/arch/sw_64/kexec-sw_64.c
@@ -0,0 +1,172 @@
+/*
+ * kexec-sw_64.c - kexec for sw_64
+ * Copyright (C) 2007 Francesco Chiechi, Alessandro Rubini
+ * Copyright (C) 2007 Tvblob s.r.l.
+ *
+ * derived from ../ppc/kexec-sw_64.c
+ * Copyright (C) 2004, 2005 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-sw_64.h"
+#include "crashdump-sw_64.h"
+#include <arch/options.h>
+
+/* Currently not used but required by top-level fs2dt code */
+off_t initrd_base = 0;
+off_t initrd_size = 0;
+
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+/* Return a sorted list of memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+		      unsigned long UNUSED(kexec_flags))
+{
+	int memory_ranges = 0;
+
+	const char iomem[] = "/proc/iomem";
+	char line[MAX_LINE];
+	FILE *fp;
+	unsigned long long start, end;
+	char *str;
+	int type, consumed, count;
+
+	fp = fopen(iomem, "r");
+	if (!fp) {
+		fprintf(stderr, "Cannot open %s: %s\n", iomem, strerror(errno));
+		return -1;
+	}
+	while (fgets(line, sizeof(line), fp) != 0) {
+		if (memory_ranges >= MAX_MEMORY_RANGES)
+			break;
+		count = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed);
+		if (count != 2)
+			continue;
+		str = line + consumed;
+		end = end + 1;
+		if (memcmp(str, "System RAM\n", 11) == 0) {
+			type = RANGE_RAM;
+		} else if (memcmp(str, "reserved\n", 9) == 0) {
+			type = RANGE_RESERVED;
+		} else {
+			continue;
+		}
+		if (memory_ranges > 0 &&
+		    memory_range[memory_ranges - 1].end == start &&
+		    memory_range[memory_ranges - 1].type == type) {
+			memory_range[memory_ranges - 1].end = end;
+		} else {
+			memory_range[memory_ranges].start = start;
+			memory_range[memory_ranges].end = end;
+			memory_range[memory_ranges].type = type;
+			memory_ranges++;
+		}
+	}
+	fclose(fp);
+	*range = memory_range;
+	*ranges = memory_ranges;
+	return 0;
+}
+
+struct file_type file_type[] = {
+	{"elf-sw_64", elf_sw_64_probe, elf_sw_64_load, elf_sw_64_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+void arch_usage(void)
+{
+	printf(
+	"    --command-line=STRING Set the kernel command line to STRING.\n"
+	"    --append=STRING       Set the kernel command line to STRING.\n"
+	"    --dtb=FILE            Use FILE as the device tree blob.\n"
+	"    --initrd=FILE         Use FILE as initial ramdisk.\n"
+	);
+}
+
+struct arch_options_t arch_options = {
+	.core_header_type = CORE_TYPE_ELF64,
+};
+
+int arch_process_options(int argc, char **argv)
+{
+	static const struct option options[] = {
+		KEXEC_ARCH_OPTIONS
+		{ 0 },
+	};
+	static const char short_options[] = KEXEC_ARCH_OPT_STR;
+	int opt;
+
+	while ((opt = getopt_long(argc, argv, short_options,
+				  options, 0)) != -1) {
+		switch (opt) {
+		case OPT_APPEND:
+			arch_options.command_line = optarg;
+			break;
+		case OPT_DTB:
+			arch_options.dtb_file = optarg;
+			break;
+		case OPT_RAMDISK:
+			arch_options.initrd_file = optarg;
+			break;
+		default:
+			break;
+		}
+	}
+
+	return 0;
+}
+
+const struct arch_map_entry arches[] = {
+	/* For compatibility with older patches
+	 * use KEXEC_ARCH_DEFAULT instead of KEXEC_ARCH_SW_64 here.
+	 */
+	{ "sw_64", KEXEC_ARCH_SW_64 },
+	{ NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+
+	return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+unsigned long virt_to_phys(unsigned long addr)
+{
+	return addr & ~PAGE_OFFSET;
+}
+
+/*
+ * add_segment() should convert base to a physical address on sw_64,
+ * while the default is just to work with base as is */
+void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
+		 unsigned long base, size_t memsz)
+{
+	add_segment_phys_virt(info, buf, bufsz, virt_to_phys(base), memsz, 1);
+}
+
+/*
+ * add_buffer() should convert base to a physical address on sw_64,
+ * while the default is just to work with base as is */
+unsigned long add_buffer(struct kexec_info *info, const void *buf,
+			 unsigned long bufsz, unsigned long memsz,
+			 unsigned long buf_align, unsigned long buf_min,
+			 unsigned long buf_max, int buf_end)
+{
+	return add_buffer_phys_virt(info, buf, bufsz, memsz, buf_align,
+				    buf_min, buf_max, buf_end, 1);
+}
+
diff --git a/kexec/arch/sw_64/kexec-sw_64.h b/kexec/arch/sw_64/kexec-sw_64.h
new file mode 100644
index 0000000..1df0bcd
--- /dev/null
+++ b/kexec/arch/sw_64/kexec-sw_64.h
@@ -0,0 +1,30 @@
+#ifndef KEXEC_SW_64_H
+#define KEXEC_SW_64_H
+
+#include <sys/types.h>
+
+#define BOOT_BLOCK_VERSION 17
+#define BOOT_BLOCK_LAST_COMP_VERSION 16
+
+#define MAX_MEMORY_RANGES  64
+#define MAX_LINE          160
+
+#define CORE_TYPE_ELF32 1
+#define CORE_TYPE_ELF64 2
+
+int elf_sw_64_probe(const char *buf, off_t len);
+int elf_sw_64_load(int argc, char **argv, const char *buf, off_t len,
+	struct kexec_info *info);
+void elf_sw_64_usage(void);
+
+struct arch_options_t {
+	char *command_line;
+	char *dtb_file;
+	char *initrd_file;
+	int core_header_type;
+};
+
+extern struct memory_ranges usablemem_rgns;
+extern off_t initrd_base, initrd_size;
+
+#endif /* KEXEC_SW_64_H */
diff --git a/kexec/crashdump.h b/kexec/crashdump.h
index 18bd691..b8a231e 100644
--- a/kexec/crashdump.h
+++ b/kexec/crashdump.h
@@ -16,6 +16,8 @@ extern int get_xen_vmcoreinfo(uint64_t *addr, uint64_t *len);
  */
 #define ELF_CORE_HEADER_ALIGN   1024
 
+#define START_OFFSET           0xfff0000000000000UL
+
 /* structure passed to crash_create_elf32/64_headers() */
 
 struct crash_elf_info {
diff --git a/kexec/kexec-elf.c b/kexec/kexec-elf.c
index be60bbd..62d8319 100644
--- a/kexec/kexec-elf.c
+++ b/kexec/kexec-elf.c
@@ -168,7 +168,8 @@ static int build_mem_elf32_ehdr(const char *buf, off_t len, struct mem_ehdr *ehd
 	return 0;
 }
 
-static int build_mem_elf64_ehdr(const char *buf, off_t len, struct mem_ehdr *ehdr)
+static int build_mem_elf64_ehdr(const char *buf, off_t len,
+				struct mem_ehdr *ehdr, int64_t offset)
 {
 	Elf64_Ehdr lehdr;
 	if ((uintmax_t)len < (uintmax_t)sizeof(lehdr)) {
@@ -210,7 +211,7 @@ static int build_mem_elf64_ehdr(const char *buf, off_t len, struct mem_ehdr *ehd
 	ehdr->e_type      = elf16_to_cpu(ehdr, lehdr.e_type);
 	ehdr->e_machine   = elf16_to_cpu(ehdr, lehdr.e_machine);
 	ehdr->e_version   = elf32_to_cpu(ehdr, lehdr.e_version);
-	ehdr->e_entry     = elf64_to_cpu(ehdr, lehdr.e_entry);
+	ehdr->e_entry     = elf64_to_cpu(ehdr, lehdr.e_entry + offset);
 	ehdr->e_phoff     = elf64_to_cpu(ehdr, lehdr.e_phoff);
 	ehdr->e_shoff     = elf64_to_cpu(ehdr, lehdr.e_shoff);
 	ehdr->e_flags     = elf32_to_cpu(ehdr, lehdr.e_flags);
@@ -240,7 +241,8 @@ static int build_mem_elf64_ehdr(const char *buf, off_t len, struct mem_ehdr *ehd
 	return 0;
 }
 
-static int build_mem_ehdr(const char *buf, off_t len, struct mem_ehdr *ehdr)
+static int build_mem_ehdr(const char *buf, off_t len,
+			  struct mem_ehdr *ehdr, uint64_t offset)
 {
 	unsigned char e_ident[EI_NIDENT];
 	int result;
@@ -286,7 +288,7 @@ static int build_mem_ehdr(const char *buf, off_t len, struct mem_ehdr *ehdr)
 		result = build_mem_elf32_ehdr(buf, len, ehdr);
 	}
 	else if (ehdr->ei_class == ELFCLASS64) {
-		result = build_mem_elf64_ehdr(buf, len, ehdr);
+		result = build_mem_elf64_ehdr(buf, len, ehdr, offset);
 	}
 	if (result < 0) {
 		return result;
@@ -335,7 +337,8 @@ static int build_mem_elf32_phdr(const char *buf, struct mem_ehdr *ehdr, int idx)
 	return 0;
 }
 
-static int build_mem_elf64_phdr(const char *buf, struct mem_ehdr *ehdr, int idx)
+static int build_mem_elf64_phdr(const char *buf,
+				struct mem_ehdr *ehdr, int idx, uint64_t offset)
 {
 	struct mem_phdr *phdr;
 	const char *pbuf;
@@ -356,8 +359,8 @@ static int build_mem_elf64_phdr(const char *buf, struct mem_ehdr *ehdr, int idx)
 	}
 
 	phdr->p_type   = elf32_to_cpu(ehdr, lphdr.p_type);
-	phdr->p_paddr  = elf64_to_cpu(ehdr, lphdr.p_paddr);
-	phdr->p_vaddr  = elf64_to_cpu(ehdr, lphdr.p_vaddr);
+	phdr->p_paddr  = elf64_to_cpu(ehdr, lphdr.p_paddr + offset);
+	phdr->p_vaddr  = elf64_to_cpu(ehdr, lphdr.p_vaddr + offset);
 	phdr->p_filesz = elf64_to_cpu(ehdr, lphdr.p_filesz);
 	phdr->p_memsz  = elf64_to_cpu(ehdr, lphdr.p_memsz);
 	phdr->p_offset = elf64_to_cpu(ehdr, lphdr.p_offset);
@@ -368,7 +371,7 @@ static int build_mem_elf64_phdr(const char *buf, struct mem_ehdr *ehdr, int idx)
 }
 
 static int build_mem_phdrs(const char *buf, off_t len, struct mem_ehdr *ehdr,
-				uint32_t flags)
+				uint32_t flags, uint64_t offset)
 {
 	size_t phdr_size, mem_phdr_size, i;
 
@@ -412,7 +415,7 @@ static int build_mem_phdrs(const char *buf, off_t len, struct mem_ehdr *ehdr,
 
 		}
 		else if (ehdr->ei_class == ELFCLASS64) {
-			result = build_mem_elf64_phdr(buf, ehdr, i);
+			result = build_mem_elf64_phdr(buf, ehdr, i, offset);
 		}
 		if (result < 0) {
 			return result;
@@ -515,14 +518,33 @@ static int build_mem_elf32_shdr(const char *buf, struct mem_ehdr *ehdr, int idx)
 	return 0;
 }
 
-static int build_mem_elf64_shdr(const char *buf, struct mem_ehdr *ehdr, int idx)
+static int build_mem_elf64_shdr(const char *buf, struct mem_ehdr *ehdr,
+				int idx, uint64_t offset,
+				unsigned long long kernel_start,
+				unsigned long long crash_start)
 {
 	struct mem_shdr *shdr;
 	const char *sbuf;
-	int size_ok;
+	int size_ok, res;
 	Elf64_Shdr lshdr;
+	uint64_t sh_off, sh_size, *content, count = 1;
+	uint32_t sh_type;
 	sbuf = buf + ehdr->e_shoff + (idx * sizeof(lshdr));
 	shdr = &ehdr->e_shdr[idx];
+
+	sh_type = *(unsigned long *)(sbuf + 4);
+	sh_off = *(unsigned long long *)(sbuf + 24);
+	sh_size = *(unsigned long long *)(sbuf + 32);
+	content = (unsigned long long *)(buf + sh_off);
+	if (sh_type == SHT_PROGBITS || sh_type == SHT_SYMTAB) {
+		while (count < (sh_size / 8)) {
+			if (*(content + count) >= kernel_start
+			    && *(content + count) < crash_start)
+				*(content + count) += offset;
+			count++;
+		}
+	}
+
 	memcpy(&lshdr, sbuf, sizeof(lshdr));
 
 	if (	(elf64_to_cpu(ehdr, lshdr.sh_flags)     > UINT64_MAX) ||
@@ -585,7 +607,9 @@ static int build_mem_elf64_shdr(const char *buf, struct mem_ehdr *ehdr, int idx)
 }
 
 static int build_mem_shdrs(const char *buf, off_t len, struct mem_ehdr *ehdr,
-				uint32_t flags)
+			   uint32_t flags, uint64_t offset,
+			   unsigned long long kernel_start,
+			   unsigned long long crash_start)
 {
 	size_t shdr_size, mem_shdr_size, i;
 
@@ -625,7 +649,9 @@ static int build_mem_shdrs(const char *buf, off_t len, struct mem_ehdr *ehdr,
 			result = build_mem_elf32_shdr(buf, ehdr, i);
 		}
 		else if (ehdr->ei_class == ELFCLASS64) {
-			result = build_mem_elf64_shdr(buf, ehdr, i);
+			result = build_mem_elf64_shdr(buf, ehdr, i,
+						      offset, kernel_start,
+						      crash_start);
 		}
 		if (result < 0) {
 			return result;
@@ -759,19 +785,52 @@ int build_elf_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
 			uint32_t flags)
 {
 	int result;
-	result = build_mem_ehdr(buf, len, ehdr);
+	const char iomem[] = "/proc/iomem";
+	char line[160];
+	uint64_t entry, offset = 0;
+	unsigned long long start, end, kernel_start, crash_start = 0;
+
+	FILE *io_fp = fopen(iomem, "r");
+
+	if (!io_fp) {
+		fprintf(stderr, "Cannot open %s: %s\n",
+			iomem, strerror(errno));
+		return -1;
+	}
+	while (fgets(line, sizeof(line), io_fp) != 0) {
+		char *str;
+		int type, consumed, count;
+
+		count = sscanf(line, "%llx-%llx : %n",
+			&start, &end, &consumed);
+		if (count != 2)
+			continue;
+		str = line + consumed;
+
+		if (memcmp(str, "Crash kernel\n", 13) == 0 && flags) {
+			crash_start = start + START_OFFSET + 0x10000;
+			break;
+		}
+	}
+	kernel_start = *(unsigned long long *)(buf + 24);
+	if (crash_start != 0)
+		offset = crash_start - kernel_start;
+
+	flags = 0;
+	result = build_mem_ehdr(buf, len, ehdr, offset);
 	if (result < 0) {
 		return result;
 	}
 	if ((ehdr->e_phoff > 0) && (ehdr->e_phnum > 0)) {
-		result = build_mem_phdrs(buf, len, ehdr, flags);
+		result = build_mem_phdrs(buf, len, ehdr, flags, offset);
 		if (result < 0) {
 			free_elf_info(ehdr);
 			return result;
 		}
 	}
 	if ((ehdr->e_shoff > 0) && (ehdr->e_shnum > 0)) {
-		result = build_mem_shdrs(buf, len, ehdr, flags);
+		result = build_mem_shdrs(buf, len, ehdr, flags,
+					 offset, kernel_start, crash_start);
 		if (result < 0) {
 			free_elf_info(ehdr);
 			return result;
diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h
index be6ccd5..7d837d5 100644
--- a/kexec/kexec-syscall.h
+++ b/kexec/kexec-syscall.h
@@ -54,6 +54,9 @@
 #ifdef __alpha__
 #define __NR_kexec_load                448
 #endif
+#ifdef __sw_64__
+#define __NR_kexec_load                448
+#endif
 #ifndef __NR_kexec_load
 #error Unknown processor architecture.  Needs a kexec_load syscall number.
 #endif
@@ -138,6 +141,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd,
 #define KEXEC_ARCH_MIPS    ( 8 << 16)
 #define KEXEC_ARCH_CRIS    (76 << 16)
 #define KEXEC_ARCH_LOONGARCH	(258 << 16)
+#define KEXEC_ARCH_SW_64   (0x9916UL << 16)
 
 #define KEXEC_MAX_SEGMENTS 16
 
diff --git a/kexec/kexec.c b/kexec/kexec.c
index 0e92d96..b75705d 100644
--- a/kexec/kexec.c
+++ b/kexec/kexec.c
@@ -830,7 +830,8 @@ static int my_load(const char *type, int fileind, int argc, char **argv,
 		fprintf(stderr, "entry       = %p flags = 0x%lx\n", 
 			info.entry, info.kexec_flags);
 		print_segments(stderr, &info);
-	}
+	} else
+		printf("kexec_load success!\n");
 	return result;
 }