[POWERPC] Add flatdevtree source

Add the latest version of the flatdevtree code and corresponding glue.

A phandle table now tracks values returned by ft_find_device().
The value returned by ft_find_device() is a phandle which is really
an index into the phandle table.  The phandle table contains the address
of the corresponding node.  When the flat dt is edited/moved, the node
pointers in the phandle table are updated accordingly so no phandles kept
by the caller become stale.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/arch/powerpc/boot/flatdevtree_env.h b/arch/powerpc/boot/flatdevtree_env.h
new file mode 100644
index 000000000000..83bc1c718836
--- /dev/null
+++ b/arch/powerpc/boot/flatdevtree_env.h
@@ -0,0 +1,47 @@
+/*
+ * This file adds the header file glue so that the shared files
+ * flatdevicetree.[ch] can compile and work in the powerpc bootwrapper.
+ *
+ * strncmp & strchr copied from <file:lib/strings.c>
+ * Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ * Maintained by: Mark A. Greer <mgreer@mvista.com>
+ */
+#ifndef _PPC_BOOT_FLATDEVTREE_ENV_H_
+#define _PPC_BOOT_FLATDEVTREE_ENV_H_
+
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "string.h"
+#include "stdio.h"
+#include "ops.h"
+
+#define be16_to_cpu(x)          (x)
+#define cpu_to_be16(x)          (x)
+#define be32_to_cpu(x)          (x)
+#define cpu_to_be32(x)          (x)
+#define be64_to_cpu(x)          (x)
+#define cpu_to_be64(x)          (x)
+
+static inline int strncmp(const char *cs, const char *ct, size_t count)
+{
+        signed char __res = 0;
+
+        while (count) {
+                if ((__res = *cs - *ct++) != 0 || !*cs++)
+                        break;
+                count--;
+        }
+        return __res;
+}
+
+static inline char *strchr(const char *s, int c)
+{
+        for (; *s != (char)c; ++s)
+                if (*s == '\0')
+                        return NULL;
+        return (char *)s;
+}
+
+#endif /* _PPC_BOOT_FLATDEVTREE_ENV_H_ */