[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);
+}
+