d75b33af67
Currently, the Linux kernel, libfdt and dtc, when using flattened
device trees encode a node's phandle into a property named
"linux,phandle". The ePAPR specification, however - aiming as it is
to not be a Linux specific spec - requires that phandles be encoded in
a property named simply "phandle".
This patch adds support for this newer approach to dtc and libfdt.
Specifically:
- fdt_get_phandle() will now return the correct phandle if it
is supplied in either of these properties
- fdt_node_offset_by_phandle() will correctly find a node with
the given phandle encoded in either property.
- By default, when auto-generating phandles, dtc will encode
it into both properties for maximum compatibility. A new -H
option allows either only old-style or only new-style
properties to be generated.
- If phandle properties are explicitly supplied in the dts
file, dtc will not auto-generate ones in the alternate format.
- If both properties are supplied, dtc will check that they
have the same value.
- Some existing testcases are updated to use a mix of old and
new-style phandles, partially testing the changes.
- A new phandle_format test further tests the libfdt support,
and the -H option.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/*
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* libfdt - Flat Device Tree manipulation
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* Testcase for fdt_nop_node()
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* Copyright (C) 2006 David Gibson, IBM Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdint.h>
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#include <fdt.h>
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#include <libfdt.h>
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#include "tests.h"
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#include "testdata.h"
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#define SPACE 65536
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#define CHECK(code) \
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{ \
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err = (code); \
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if (err) \
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FAIL(#code ": %s", fdt_strerror(err)); \
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}
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int main(int argc, char *argv[])
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{
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void *fdt;
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int err;
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test_init(argc, argv);
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fdt = xmalloc(SPACE);
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CHECK(fdt_create(fdt, SPACE));
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CHECK(fdt_add_reservemap_entry(fdt, TEST_ADDR_1, TEST_SIZE_1));
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CHECK(fdt_add_reservemap_entry(fdt, TEST_ADDR_2, TEST_SIZE_2));
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CHECK(fdt_finish_reservemap(fdt));
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CHECK(fdt_begin_node(fdt, ""));
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CHECK(fdt_property_string(fdt, "compatible", "test_tree1"));
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CHECK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_1));
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CHECK(fdt_property_string(fdt, "prop-str", TEST_STRING_1));
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CHECK(fdt_begin_node(fdt, "subnode@1"));
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CHECK(fdt_property_string(fdt, "compatible", "subnode1"));
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CHECK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_1));
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CHECK(fdt_begin_node(fdt, "subsubnode"));
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CHECK(fdt_property(fdt, "compatible", "subsubnode1\0subsubnode",
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23));
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CHECK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_1));
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CHECK(fdt_end_node(fdt));
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CHECK(fdt_begin_node(fdt, "ss1"));
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CHECK(fdt_end_node(fdt));
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CHECK(fdt_end_node(fdt));
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CHECK(fdt_begin_node(fdt, "subnode@2"));
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CHECK(fdt_property_cell(fdt, "linux,phandle", PHANDLE_1));
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CHECK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_2));
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CHECK(fdt_begin_node(fdt, "subsubnode@0"));
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CHECK(fdt_property_cell(fdt, "phandle", PHANDLE_2));
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CHECK(fdt_property(fdt, "compatible", "subsubnode2\0subsubnode",
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23));
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CHECK(fdt_property_cell(fdt, "prop-int", TEST_VALUE_2));
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CHECK(fdt_end_node(fdt));
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CHECK(fdt_begin_node(fdt, "ss2"));
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CHECK(fdt_end_node(fdt));
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CHECK(fdt_end_node(fdt));
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CHECK(fdt_end_node(fdt));
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save_blob("unfinished_tree1.test.dtb", fdt);
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CHECK(fdt_finish(fdt));
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verbose_printf("Completed tree, totalsize = %d\n",
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fdt_totalsize(fdt));
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save_blob("sw_tree1.test.dtb", fdt);
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PASS();
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}
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