Initial import

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/metag/kernel/devtree.c b/arch/metag/kernel/devtree.c
new file mode 100644
index 000000000..18dd7aea9
--- /dev/null
+++ b/arch/metag/kernel/devtree.c
@@ -0,0 +1,71 @@
+/*
+ *  linux/arch/metag/kernel/devtree.c
+ *
+ *  Copyright (C) 2012 Imagination Technologies Ltd.
+ *
+ *  Based on ARM version:
+ *  Copyright (C) 2009 Canonical Ltd. <jeremy.kerr@canonical.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/export.h>
+#include <linux/types.h>
+#include <linux/bootmem.h>
+#include <linux/memblock.h>
+#include <linux/of.h>
+#include <linux/of_fdt.h>
+
+#include <asm/setup.h>
+#include <asm/page.h>
+#include <asm/mach/arch.h>
+
+void __init early_init_dt_add_memory_arch(u64 base, u64 size)
+{
+	pr_err("%s(%llx, %llx)\n",
+	       __func__, base, size);
+}
+
+void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
+{
+	return alloc_bootmem_align(size, align);
+}
+
+static const void * __init arch_get_next_mach(const char *const **match)
+{
+	static const struct machine_desc *mdesc = __arch_info_begin;
+	const struct machine_desc *m = mdesc;
+
+	if (m >= __arch_info_end)
+		return NULL;
+
+	mdesc++;
+	*match = m->dt_compat;
+	return m;
+}
+
+/**
+ * setup_machine_fdt - Machine setup when an dtb was passed to the kernel
+ * @dt:		virtual address pointer to dt blob
+ *
+ * If a dtb was passed to the kernel, then use it to choose the correct
+ * machine_desc and to setup the system.
+ */
+const struct machine_desc * __init setup_machine_fdt(void *dt)
+{
+	const struct machine_desc *mdesc;
+
+	/* check device tree validity */
+	if (!early_init_dt_scan(dt))
+		return NULL;
+
+	mdesc = of_flat_dt_match_machine(NULL, arch_get_next_mach);
+	if (!mdesc)
+		dump_machine_table(); /* does not return */
+	pr_info("Machine name: %s\n", mdesc->name);
+
+	return mdesc;
+}