Signed-off-by: Marcin Nowakowski <marcin.nowakowski@xxxxxxxxxx>
---
arch/mips/generic/Makefile | 1 +
arch/mips/generic/kexec.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 46 insertions(+)
create mode 100644 arch/mips/generic/kexec.c
diff --git a/arch/mips/generic/Makefile b/arch/mips/generic/Makefile
index 7c66494..acb9b6d 100644
--- a/arch/mips/generic/Makefile
+++ b/arch/mips/generic/Makefile
@@ -13,3 +13,4 @@ obj-y += irq.o
obj-y += proc.o
obj-$(CONFIG_LEGACY_BOARD_SEAD3) += board-sead3.o
+obj-$(CONFIG_KEXEC) += kexec.o
diff --git a/arch/mips/generic/kexec.c b/arch/mips/generic/kexec.c
new file mode 100644
index 0000000..61f812b
--- /dev/null
+++ b/arch/mips/generic/kexec.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016 Imagination Technologies
+ * Author: Marcin Nowakowski <marcin.nowakowski@xxxxxxxxxx>
+ *
+ * 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; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kexec.h>
+#include <linux/libfdt.h>
+#include <linux/uaccess.h>
+
+static int generic_kexec_prepare(struct kimage *image)
+{
+ int i;
+
+ for (i = 0; i < image->nr_segments; i++) {
+ struct fdt_header fdt;
+
+ if (image->segment[i].memsz <= sizeof(fdt))
+ continue;
+
+ if (copy_from_user(&fdt, image->segment[i].buf, sizeof(fdt)))
+ continue;
+
+ if (fdt_check_header(&fdt))
+ continue;
+
+ kexec_args[0] = -2;
+ kexec_args[1] = (unsigned long)
+ phys_to_virt((unsigned long)image->segment[i].mem);
+ break;
+ }
+ return 0;
+}
+
+static int __init register_generic_kexec(void)
+{
+ _machine_kexec_prepare = generic_kexec_prepare;
+ return 0;
+}
+arch_initcall(register_generic_kexec);
+
--
2.7.4
