397d5ef020
Device trees can contain empty (zero length) properties, which are often used as boolean flags. These can already be created using fdt_setprop() passing a length of zero and a pointer which is ignored. It is safe to pass NULL, but that may not be obvious from the interface. To make it clearer, add an fdt_setprop_empty() helper macro. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
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* libfdt - Flat Device Tree manipulation
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* Testcase for fdt_setprop()
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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 <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 NEW_STRING "here is quite a long test string, blah blah blah"
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int main(int argc, char *argv[])
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{
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void *fdt;
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void *buf;
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const uint32_t *intp;
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const char *strp;
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int err;
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test_init(argc, argv);
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fdt = load_blob_arg(argc, argv);
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buf = xmalloc(SPACE);
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err = fdt_open_into(fdt, buf, SPACE);
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if (err)
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FAIL("fdt_open_into(): %s", fdt_strerror(err));
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fdt = buf;
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intp = check_getprop_cell(fdt, 0, "prop-int", TEST_VALUE_1);
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verbose_printf("Old int value was 0x%08x\n", *intp);
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err = fdt_setprop_string(fdt, 0, "prop-int", NEW_STRING);
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if (err)
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FAIL("Failed to set \"prop-int\" to \"%s\": %s",
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NEW_STRING, fdt_strerror(err));
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strp = check_getprop_string(fdt, 0, "prop-int", NEW_STRING);
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verbose_printf("New value is \"%s\"\n", strp);
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strp = check_getprop(fdt, 0, "prop-str", strlen(TEST_STRING_1)+1,
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TEST_STRING_1);
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verbose_printf("Old string value was \"%s\"\n", strp);
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err = fdt_setprop_empty(fdt, 0, "prop-str");
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if (err)
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FAIL("Failed to empty \"prop-str\": %s",
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fdt_strerror(err));
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check_getprop(fdt, 0, "prop-str", 0, NULL);
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err = fdt_setprop_u32(fdt, 0, "prop-u32", TEST_VALUE_2);
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if (err)
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FAIL("Failed to set \"prop-u32\" to 0x%08x: %s",
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TEST_VALUE_2, fdt_strerror(err));
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check_getprop_cell(fdt, 0, "prop-u32", TEST_VALUE_2);
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err = fdt_setprop_cell(fdt, 0, "prop-cell", TEST_VALUE_2);
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if (err)
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FAIL("Failed to set \"prop-cell\" to 0x%08x: %s",
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TEST_VALUE_2, fdt_strerror(err));
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check_getprop_cell(fdt, 0, "prop-cell", TEST_VALUE_2);
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err = fdt_setprop_u64(fdt, 0, "prop-u64", TEST_VALUE64_1);
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if (err)
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FAIL("Failed to set \"prop-u64\" to 0x%016llx: %s",
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TEST_VALUE64_1, fdt_strerror(err));
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check_getprop_64(fdt, 0, "prop-u64", TEST_VALUE64_1);
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PASS();
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}
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