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