Update libfdt from device tree compiler (dtc)
Update libfdt to commit 8eaf5e358366017aa2e846c5038d1aa19958314e from
the device tree compiler (dtc) project.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/libfdt/fdt_rw.c b/libfdt/fdt_rw.c
index aaafc53..dfe5628 100644
--- a/libfdt/fdt_rw.c
+++ b/libfdt/fdt_rw.c
@@ -2,19 +2,51 @@
* libfdt - Flat Device Tree manipulation
* Copyright (C) 2006 David Gibson, IBM Corporation.
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 2.1 of
- * the License, or (at your option) any later version.
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
*
- * 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
- * Lesser General Public License for more details.
+ * 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.
*
- * You should have received a copy of the GNU Lesser 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
+ * 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"
@@ -23,25 +55,32 @@
#include "libfdt_internal.h"
+static int _blocks_misordered(const void *fdt,
+ int mem_rsv_size, int struct_size)
+{
+ return (fdt_off_mem_rsvmap(fdt) < ALIGN(sizeof(struct fdt_header), 8))
+ || (fdt_off_dt_struct(fdt) <
+ (fdt_off_mem_rsvmap(fdt) + mem_rsv_size))
+ || (fdt_off_dt_strings(fdt) <
+ (fdt_off_dt_struct(fdt) + struct_size))
+ || (fdt_totalsize(fdt) <
+ (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
+}
+
static int rw_check_header(void *fdt)
{
int err;
if ((err = fdt_check_header(fdt)))
return err;
- if (fdt_version(fdt) < 0x11)
+ if (fdt_version(fdt) < 17)
return -FDT_ERR_BADVERSION;
- if (fdt_off_mem_rsvmap(fdt) < ALIGN(sizeof(struct fdt_header), 8))
+ if (_blocks_misordered(fdt, sizeof(struct fdt_reserve_entry),
+ fdt_size_dt_struct(fdt)))
return -FDT_ERR_BADLAYOUT;
- if (fdt_off_dt_struct(fdt) <
- (fdt_off_mem_rsvmap(fdt) + sizeof(struct fdt_reserve_entry)))
- return -FDT_ERR_BADLAYOUT;
- if (fdt_off_dt_strings(fdt) <
- (fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt)))
- return -FDT_ERR_BADLAYOUT;
- if (fdt_totalsize(fdt) <
- (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)))
- return -FDT_ERR_BADLAYOUT;
+ if (fdt_version(fdt) > 17)
+ fdt_set_version(fdt, 17);
+
return 0;
}
@@ -69,6 +108,19 @@
return 0;
}
+static int _blob_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
+ int oldn, int newn)
+{
+ int delta = (newn - oldn) * sizeof(*p);
+ int err;
+ err = _blob_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
+ if (err)
+ return err;
+ fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
+ fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
+ return 0;
+}
+
static int _blob_splice_struct(void *fdt, void *p,
int oldlen, int newlen)
{
@@ -78,8 +130,8 @@
if ((err = _blob_splice(fdt, p, oldlen, newlen)))
return err;
- fdt_set_header(fdt, size_dt_struct, fdt_size_dt_struct(fdt) + delta);
- fdt_set_header(fdt, off_dt_strings, fdt_off_dt_strings(fdt) + delta);
+ fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
+ fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
return 0;
}
@@ -91,7 +143,7 @@
if ((err = _blob_splice(fdt, p, 0, newlen)))
return err;
- fdt_set_header(fdt, size_dt_strings, fdt_size_dt_strings(fdt) + newlen);
+ fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
return 0;
}
@@ -117,13 +169,47 @@
return (new - strtab);
}
+int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
+{
+ struct fdt_reserve_entry *re;
+ int err;
+
+ if ((err = rw_check_header(fdt)))
+ return err;
+
+ re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt));
+ err = _blob_splice_mem_rsv(fdt, re, 0, 1);
+ if (err)
+ return err;
+
+ re->address = cpu_to_fdt64(address);
+ re->size = cpu_to_fdt64(size);
+ return 0;
+}
+
+int fdt_del_mem_rsv(void *fdt, int n)
+{
+ struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n);
+ int err;
+
+ if ((err = rw_check_header(fdt)))
+ return err;
+ if (n >= fdt_num_mem_rsv(fdt))
+ return -FDT_ERR_NOTFOUND;
+
+ err = _blob_splice_mem_rsv(fdt, re, 1, 0);
+ if (err)
+ return err;
+ return 0;
+}
+
static int _resize_property(void *fdt, int nodeoffset, const char *name, int len,
struct fdt_property **prop)
{
int oldlen;
int err;
- *prop = fdt_get_property(fdt, nodeoffset, name, &oldlen);
+ *prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
if (! (*prop))
return oldlen;
@@ -145,7 +231,7 @@
int namestroff;
int err;
- tag = fdt_next_tag(fdt, nodeoffset, &nextoffset, NULL);
+ tag = fdt_next_tag(fdt, nodeoffset, &nextoffset);
if (tag != FDT_BEGIN_NODE)
return -FDT_ERR_BADOFFSET;
@@ -153,7 +239,7 @@
if (namestroff < 0)
return namestroff;
- *prop = _fdt_offset_ptr(fdt, nextoffset);
+ *prop = _fdt_offset_ptr_w(fdt, nextoffset);
proplen = sizeof(**prop) + ALIGN(len, FDT_TAGSIZE);
err = _blob_splice_struct(fdt, *prop, 0, proplen);
@@ -192,7 +278,7 @@
RW_CHECK_HEADER(fdt);
- prop = fdt_get_property(fdt, nodeoffset, name, &len);
+ prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
if (! prop)
return len;
@@ -219,13 +305,13 @@
return offset;
/* Try to place the new node after the parent's properties */
- fdt_next_tag(fdt, parentoffset, &nextoffset, NULL); /* skip the BEGIN_NODE */
+ fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */
do {
offset = nextoffset;
- tag = fdt_next_tag(fdt, offset, &nextoffset, NULL);
+ tag = fdt_next_tag(fdt, offset, &nextoffset);
} while (tag == FDT_PROP);
- nh = _fdt_offset_ptr(fdt, offset);
+ nh = _fdt_offset_ptr_w(fdt, offset);
nodelen = sizeof(*nh) + ALIGN(namelen+1, FDT_TAGSIZE) + FDT_TAGSIZE;
err = _blob_splice_struct(fdt, nh, 0, nodelen);
@@ -250,44 +336,112 @@
{
int endoffset;
+ RW_CHECK_HEADER(fdt);
+
endoffset = _fdt_node_end_offset(fdt, nodeoffset);
if (endoffset < 0)
return endoffset;
- return _blob_splice_struct(fdt, _fdt_offset_ptr(fdt, nodeoffset),
+ return _blob_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset),
endoffset - nodeoffset, 0);
}
-int fdt_open_into(void *fdt, void *buf, int bufsize)
+static void _packblocks(const void *fdt, void *buf,
+ int mem_rsv_size, int struct_size)
+{
+ int mem_rsv_off, struct_off, strings_off;
+
+ mem_rsv_off = ALIGN(sizeof(struct fdt_header), 8);
+ struct_off = mem_rsv_off + mem_rsv_size;
+ strings_off = struct_off + struct_size;
+
+ memmove(buf + mem_rsv_off, fdt + fdt_off_mem_rsvmap(fdt), mem_rsv_size);
+ fdt_set_off_mem_rsvmap(buf, mem_rsv_off);
+
+ memcpy(buf + struct_off, fdt + fdt_off_dt_struct(fdt), struct_size);
+ fdt_set_off_dt_struct(buf, struct_off);
+ fdt_set_size_dt_struct(buf, struct_size);
+
+ memcpy(buf + strings_off, fdt + fdt_off_dt_strings(fdt),
+ fdt_size_dt_strings(fdt));
+ fdt_set_off_dt_strings(buf, strings_off);
+ fdt_set_size_dt_strings(buf, fdt_size_dt_strings(fdt));
+}
+
+int fdt_open_into(const void *fdt, void *buf, int bufsize)
{
int err;
+ int mem_rsv_size, struct_size;
+ int newsize;
+ void *tmp;
- err = fdt_move(fdt, buf, bufsize);
+ err = fdt_check_header(fdt);
if (err)
return err;
- fdt = buf;
+ mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
+ * sizeof(struct fdt_reserve_entry);
- fdt_set_header(fdt, totalsize, bufsize);
+ if (fdt_version(fdt) >= 17) {
+ struct_size = fdt_size_dt_struct(fdt);
+ } else {
+ struct_size = 0;
+ while (fdt_next_tag(fdt, struct_size, &struct_size) != FDT_END)
+ ;
+ }
- /* FIXME: re-order if necessary */
+ if (!_blocks_misordered(fdt, mem_rsv_size, struct_size)) {
+ /* no further work necessary */
+ err = fdt_move(fdt, buf, bufsize);
+ if (err)
+ return err;
+ fdt_set_version(buf, 17);
+ fdt_set_size_dt_struct(buf, struct_size);
+ fdt_set_totalsize(buf, bufsize);
+ return 0;
+ }
- err = rw_check_header(fdt);
- if (err)
- return err;
+ /* Need to reorder */
+ newsize = ALIGN(sizeof(struct fdt_header), 8) + mem_rsv_size
+ + struct_size + fdt_size_dt_strings(fdt);
+
+ if (bufsize < newsize)
+ return -FDT_ERR_NOSPACE;
+
+ if (((buf + newsize) <= fdt)
+ || (buf >= (fdt + fdt_totalsize(fdt)))) {
+ tmp = buf;
+ } else {
+ tmp = (void *)fdt + fdt_totalsize(fdt);
+ if ((tmp + newsize) > (buf + bufsize))
+ return -FDT_ERR_NOSPACE;
+ }
+
+ _packblocks(fdt, tmp, mem_rsv_size, struct_size);
+ memmove(buf, tmp, newsize);
+
+ fdt_set_magic(buf, FDT_MAGIC);
+ fdt_set_totalsize(buf, bufsize);
+ fdt_set_version(buf, 17);
+ fdt_set_last_comp_version(buf, 16);
+ fdt_set_boot_cpuid_phys(buf, fdt_boot_cpuid_phys(fdt));
return 0;
}
int fdt_pack(void *fdt)
{
+ int mem_rsv_size;
int err;
err = rw_check_header(fdt);
if (err)
return err;
- /* FIXME: pack components */
- fdt_set_header(fdt, totalsize, _blob_data_size(fdt));
+ mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
+ * sizeof(struct fdt_reserve_entry);
+ _packblocks(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
+ fdt_set_totalsize(fdt, _blob_data_size(fdt));
+
return 0;
}