1 files changed, 145 insertions, 0 deletions

diff --git a/scripts/dtc/libfdt/fdt_wip.c b/scripts/dtc/libfdt/fdt_wip.c
new file mode 100644
index 000000000000..a4652c6e787e
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_wip.c
@@ -0,0 +1,145 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ *  a) This library 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 library 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 library; if not, write to the Free
+ *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ *     MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ *  b) Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *     2. Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
+                        const void *val, int len)
+{
+        void *propval;
+        int proplen;
+
+        propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen);
+        if (! propval)
+                return proplen;
+
+        if (proplen != len)
+                return -FDT_ERR_NOSPACE;
+
+        memcpy(propval, val, len);
+        return 0;
+}
+
+static void _fdt_nop_region(void *start, int len)
+{
+        uint32_t *p;
+
+        for (p = start; (char *)p < ((char *)start + len); p++)
+                *p = cpu_to_fdt32(FDT_NOP);
+}
+
+int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
+{
+        struct fdt_property *prop;
+        int len;
+
+        prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
+        if (! prop)
+                return len;
+
+        _fdt_nop_region(prop, len + sizeof(*prop));
+
+        return 0;
+}
+
+int _fdt_node_end_offset(void *fdt, int nodeoffset)
+{
+        int level = 0;
+        uint32_t tag;
+        int offset, nextoffset;
+
+        tag = fdt_next_tag(fdt, nodeoffset, &nextoffset);
+        if (tag != FDT_BEGIN_NODE)
+                return -FDT_ERR_BADOFFSET;
+        do {
+                offset = nextoffset;
+                tag = fdt_next_tag(fdt, offset, &nextoffset);
+
+                switch (tag) {
+                case FDT_END:
+                        return offset;
+
+                case FDT_BEGIN_NODE:
+                        level++;
+                        break;
+
+                case FDT_END_NODE:
+                        level--;
+                        break;
+
+                case FDT_PROP:
+                case FDT_NOP:
+                        break;
+
+                default:
+                        return -FDT_ERR_BADSTRUCTURE;
+                }
+        } while (level >= 0);
+
+        return nextoffset;
+}
+
+int fdt_nop_node(void *fdt, int nodeoffset)
+{
+        int endoffset;
+
+        endoffset = _fdt_node_end_offset(fdt, nodeoffset);
+        if (endoffset < 0)
+                return endoffset;
+
+        _fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
+                        endoffset - nodeoffset);
+        return 0;
+}