[POWERPC] Merge dtc upstream source

This incorporates a copy of dtc into the kernel source, in
arch/powerpc/boot/dtc-src.  This commit only imports the upstream
sources verbatim, a later commit will actually link it into the kernel
Makefiles and use the embedded code during the kernel build.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 94 insertions, 0 deletions

diff --git a/arch/powerpc/boot/dtc-src/fstree.c b/arch/powerpc/boot/dtc-src/fstree.c
new file mode 100644
index 000000000000..2a160a46998e
--- /dev/null
+++ b/arch/powerpc/boot/dtc-src/fstree.c
@@ -0,0 +1,94 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
+ *
+ *
+ * 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.
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ *                                                                   USA
+ */
+
+#include "dtc.h"
+
+#include <dirent.h>
+#include <sys/stat.h>
+
+static struct node *read_fstree(const char *dirname)
+{
+	DIR *d;
+	struct dirent *de;
+	struct stat st;
+	struct node *tree;
+
+	d = opendir(dirname);
+	if (! d)
+		die("opendir(): %s\n", strerror(errno));
+
+	tree = build_node(NULL, NULL);
+
+	while ((de = readdir(d)) != NULL) {
+		char *tmpnam;
+
+		if (streq(de->d_name, ".")
+		    || streq(de->d_name, ".."))
+			continue;
+
+		tmpnam = join_path(dirname, de->d_name);
+
+		if (lstat(tmpnam, &st) < 0)
+			die("stat(%s): %s\n", tmpnam, strerror(errno));
+
+		if (S_ISREG(st.st_mode)) {
+			struct property *prop;
+			FILE *pfile;
+
+			pfile = fopen(tmpnam, "r");
+			if (! pfile) {
+				fprintf(stderr,
+					"WARNING: Cannot open %s: %s\n",
+					tmpnam, strerror(errno));
+			} else {
+				prop = build_property(strdup(de->d_name),
+						      data_copy_file(pfile,
+								     st.st_size),
+						      NULL);
+				add_property(tree, prop);
+				fclose(pfile);
+			}
+		} else if (S_ISDIR(st.st_mode)) {
+			struct node *newchild;
+
+			newchild = read_fstree(tmpnam);
+			newchild = name_node(newchild, strdup(de->d_name),
+					     NULL);
+			add_child(tree, newchild);
+		}
+
+		free(tmpnam);
+	}
+
+	return tree;
+}
+
+struct boot_info *dt_from_fs(const char *dirname)
+{
+	struct node *tree;
+
+	tree = read_fstree(dirname);
+	tree = name_node(tree, "", NULL);
+
+	fill_fullpaths(tree, "");
+
+	return build_boot_info(NULL, tree);
+}
+