1 /* $NetBSD: subnode_offset.c,v 1.1.1.2 2017/06/08 15:59:27 skrll Exp $ */ 2 3 /* 4 * libfdt - Flat Device Tree manipulation 5 * Testcase for fdt_subnode_offset() 6 * Copyright (C) 2006 David Gibson, IBM Corporation. 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public License 10 * as published by the Free Software Foundation; either version 2.1 of 11 * the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with this library; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 #include <stdlib.h> 23 #include <stdio.h> 24 #include <string.h> 25 #include <stdint.h> 26 27 #include <libfdt.h> 28 29 #include "tests.h" 30 #include "testdata.h" 31 32 static int check_subnode(struct fdt_header *fdt, int parent, const char *name) 33 { 34 int offset; 35 const struct fdt_node_header *nh; 36 uint32_t tag; 37 38 verbose_printf("Checking subnode \"%s\" of %d...", name, parent); 39 offset = fdt_subnode_offset(fdt, parent, name); 40 verbose_printf("offset %d...", offset); 41 if (offset < 0) 42 FAIL("fdt_subnode_offset(\"%s\"): %s", name, fdt_strerror(offset)); 43 nh = fdt_offset_ptr(fdt, offset, sizeof(*nh)); 44 verbose_printf("pointer %p\n", nh); 45 if (! nh) 46 FAIL("NULL retrieving subnode \"%s\"", name); 47 48 tag = fdt32_to_cpu(nh->tag); 49 50 if (tag != FDT_BEGIN_NODE) 51 FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name); 52 if (!nodename_eq(nh->name, name)) 53 FAIL("Subnode name mismatch \"%s\" instead of \"%s\"", 54 nh->name, name); 55 56 return offset; 57 } 58 59 int main(int argc, char *argv[]) 60 { 61 void *fdt; 62 int subnode1_offset, subnode2_offset; 63 int subsubnode1_offset, subsubnode2_offset, subsubnode2_offset2; 64 int ss12_off, ss21_off; 65 66 test_init(argc, argv); 67 fdt = load_blob_arg(argc, argv); 68 69 subnode1_offset = check_subnode(fdt, 0, "subnode@1"); 70 subnode2_offset = check_subnode(fdt, 0, "subnode@2"); 71 72 if (subnode1_offset == subnode2_offset) 73 FAIL("Different subnodes have same offset"); 74 75 check_property_cell(fdt, subnode1_offset, "prop-int", TEST_VALUE_1); 76 check_property_cell(fdt, subnode2_offset, "prop-int", TEST_VALUE_2); 77 78 subsubnode1_offset = check_subnode(fdt, subnode1_offset, "subsubnode"); 79 subsubnode2_offset = check_subnode(fdt, subnode2_offset, "subsubnode@0"); 80 subsubnode2_offset2 = check_subnode(fdt, subnode2_offset, "subsubnode"); 81 82 check_property_cell(fdt, subsubnode1_offset, "prop-int", TEST_VALUE_1); 83 check_property_cell(fdt, subsubnode2_offset, "prop-int", TEST_VALUE_2); 84 check_property_cell(fdt, subsubnode2_offset2, "prop-int", TEST_VALUE_2); 85 86 if (subsubnode2_offset != subsubnode2_offset2) 87 FAIL("Different offsets with and without unit address"); 88 89 check_subnode(fdt, subnode1_offset, "ss1"); 90 ss21_off = fdt_subnode_offset(fdt, subnode2_offset, "ss1"); 91 if (ss21_off != -FDT_ERR_NOTFOUND) 92 FAIL("Incorrectly found ss1 in subnode2"); 93 94 ss12_off = fdt_subnode_offset(fdt, subnode1_offset, "ss2"); 95 if (ss12_off != -FDT_ERR_NOTFOUND) 96 FAIL("Incorrectly found ss2 in subnode1"); 97 check_subnode(fdt, subnode2_offset, "ss2"); 98 99 PASS(); 100 } 101