1 files changed, 133 insertions, 0 deletions
diff --git a/kexec/arch/cris/kexec-elf-cris.c b/kexec/arch/cris/kexec-elf-cris.c
new file mode 100644
index 0000000..7e251e6
--- /dev/null
+++ b/kexec/arch/cris/kexec-elf-cris.c
@@ -0,0 +1,133 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2008  AXIS Communications AB
+ * Written by Edgar E. Iglesias
+ *
+ * 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 "kexec-cris.h"
+
+int elf_cris_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_CRIS) {
+		result = -1;
+		goto out;
+	}
+
+	result = 0;
+ out:
+	free_elf_info(&ehdr);
+	return result;
+}
+
+void elf_cris_usage(void)
+{
+	printf("  --append=STRING       Set the kernel command line to STRING\n"
+		);
+}
+
+#define CRAMFS_MAGIC 0x28cd3d45
+#define JHEAD_MAGIC 0x1FF528A6
+#define JHEAD_SIZE 8
+#define RAM_INIT_MAGIC 0x56902387
+#define COMMAND_LINE_MAGIC 0x87109563
+#define NAND_BOOT_MAGIC 0x9a9db001
+
+int elf_cris_load(int argc, char **argv, const char *buf, off_t len,
+		struct kexec_info *info)
+{
+	struct mem_ehdr ehdr;
+	char *command_line;
+	unsigned int *trampoline_buf;
+	unsigned long trampoline_base;
+	int opt;
+	extern void cris_trampoline(void);
+	extern unsigned long cris_trampoline_size;
+	extern struct regframe_t {
+		unsigned int regs[16];
+	} cris_regframe;
+
+	/* See options.h -- add any more there, too. */
+	static const struct option options[] = {
+		KEXEC_ARCH_OPTIONS
+		{"append", 1, 0, OPT_APPEND},
+		{ 0, 0, 0, 0 },
+	};
+
+	static const char short_options[] = KEXEC_OPT_STR "";
+
+	/*
+	 * Parse the command line arguments
+	 */
+	command_line = 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;
+		}
+	}
+
+	/* Load the ELF executable */
+	elf_exec_build_load(info, &ehdr, buf, len, 0);
+
+	cris_regframe.regs[0] = virt_to_phys(ehdr.e_entry);
+	cris_regframe.regs[8] = RAM_INIT_MAGIC;
+	cris_regframe.regs[12] = NAND_BOOT_MAGIC;
+
+	trampoline_buf = xmalloc(cris_trampoline_size);
+	trampoline_base = add_buffer_virt(info,
+					  trampoline_buf,
+					  cris_trampoline_size,
+					  cris_trampoline_size,
+					  4, 0, elf_max_addr(&ehdr), 1);
+	memcpy(trampoline_buf,
+	       cris_trampoline, cris_trampoline_size);
+	info->entry = (void *)trampoline_base;
+	return 0;
+}