1 files changed, 136 insertions, 0 deletions
diff --git a/kexec/arch/sh/kexec-elf-sh.c b/kexec/arch/sh/kexec-elf-sh.c
new file mode 100644
index 0000000..897552c
--- /dev/null
+++ b/kexec/arch/sh/kexec-elf-sh.c
@@ -0,0 +1,136 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2008  Magnus Damm
+ *
+ * Based on x86 implementation,
+ * 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 <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 "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-elf-boot.h"
+#include <arch/options.h>
+#include "crashdump-sh.h"
+#include "kexec-sh.h"
+
+int elf_sh_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_SH) {
+		result = -1;
+		goto out;
+	}
+
+	result = 0;
+ out:
+	free_elf_info(&ehdr);
+	return result;
+}
+
+void elf_sh_usage(void)
+{
+	printf("  --append=STRING       Set the kernel command line to STRING\n"
+		);
+}
+
+int elf_sh_load(int argc, char **argv, const char *buf, off_t len,
+		struct kexec_info *info)
+{
+	struct mem_ehdr ehdr;
+	char *command_line;
+	char *modified_cmdline;
+	struct mem_sym sym;
+	int opt, rc;
+	static const struct option options[] = {
+		KEXEC_ARCH_OPTIONS
+		{ 0, 0, 0, 0 },
+	};
+
+	static const char short_options[] = KEXEC_OPT_STR "";
+
+	/*
+	 * Parse the command line arguments
+	 */
+	command_line = modified_cmdline = 0;
+	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:
+			command_line = optarg;
+			break;
+		}
+	}
+
+	/* 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';
+		}
+	}
+
+	/* Load the ELF executable */
+	elf_exec_build_load(info, &ehdr, buf, len, 0);
+	info->entry = (void *)virt_to_phys(ehdr.e_entry);
+
+	/* If panic kernel is being loaded, additional segments need
+	 * to be created. */
+	if (info->kexec_flags & (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)) {
+		rc = load_crashdump_segments(info, modified_cmdline);
+		if (rc < 0)
+			return -1;
+		/* Use new command line. */
+		command_line = modified_cmdline;
+	}
+
+	/* If we're booting a vmlinux then fill in empty_zero_page */
+	if (elf_rel_find_symbol(&ehdr, "empty_zero_page", &sym) == 0) {
+		char *zp = (void *)ehdr.e_shdr[sym.st_shndx].sh_data;
+
+		kexec_sh_setup_zero_page(zp, 4096, command_line);
+	}
+
+	return 0;
+}