1/* $NetBSD: subnode_offset.c,v 1.1.1.3 2019/12/22 12:34:06 skrll Exp $ */ 2 3// SPDX-License-Identifier: LGPL-2.1-or-later 4/* 5 * libfdt - Flat Device Tree manipulation 6 * Testcase for fdt_subnode_offset() 7 * Copyright (C) 2006 David Gibson, IBM Corporation. 8 */ 9#include <stdlib.h> 10#include <stdio.h> 11#include <string.h> 12#include <stdint.h> 13 14#include <libfdt.h> 15 16#include "tests.h" 17#include "testdata.h" 18 19static int check_subnode(struct fdt_header *fdt, int parent, const char *name) 20{ 21 int offset; 22 const struct fdt_node_header *nh; 23 uint32_t tag; 24 25 verbose_printf("Checking subnode \"%s\" of %d...", name, parent); 26 offset = fdt_subnode_offset(fdt, parent, name); 27 verbose_printf("offset %d...", offset); 28 if (offset < 0) 29 FAIL("fdt_subnode_offset(\"%s\"): %s", name, fdt_strerror(offset)); 30 nh = fdt_offset_ptr(fdt, offset, sizeof(*nh)); 31 verbose_printf("pointer %p\n", nh); 32 if (! nh) 33 FAIL("NULL retrieving subnode \"%s\"", name); 34 35 tag = fdt32_to_cpu(nh->tag); 36 37 if (tag != FDT_BEGIN_NODE) 38 FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name); 39 if (!nodename_eq(nh->name, name)) 40 FAIL("Subnode name mismatch \"%s\" instead of \"%s\"", 41 nh->name, name); 42 43 return offset; 44} 45 46int main(int argc, char *argv[]) 47{ 48 void *fdt; 49 int subnode1_offset, subnode2_offset; 50 int subsubnode1_offset, subsubnode2_offset, subsubnode2_offset2; 51 int ss12_off, ss21_off; 52 53 test_init(argc, argv); 54 fdt = load_blob_arg(argc, argv); 55 56 subnode1_offset = check_subnode(fdt, 0, "subnode@1"); 57 subnode2_offset = check_subnode(fdt, 0, "subnode@2"); 58 59 if (subnode1_offset == subnode2_offset) 60 FAIL("Different subnodes have same offset"); 61 62 check_property_cell(fdt, subnode1_offset, "prop-int", TEST_VALUE_1); 63 check_property_cell(fdt, subnode2_offset, "prop-int", TEST_VALUE_2); 64 65 subsubnode1_offset = check_subnode(fdt, subnode1_offset, "subsubnode"); 66 subsubnode2_offset = check_subnode(fdt, subnode2_offset, "subsubnode@0"); 67 subsubnode2_offset2 = check_subnode(fdt, subnode2_offset, "subsubnode"); 68 69 check_property_cell(fdt, subsubnode1_offset, "prop-int", TEST_VALUE_1); 70 check_property_cell(fdt, subsubnode2_offset, "prop-int", TEST_VALUE_2); 71 check_property_cell(fdt, subsubnode2_offset2, "prop-int", TEST_VALUE_2); 72 73 if (subsubnode2_offset != subsubnode2_offset2) 74 FAIL("Different offsets with and without unit address"); 75 76 check_subnode(fdt, subnode1_offset, "ss1"); 77 ss21_off = fdt_subnode_offset(fdt, subnode2_offset, "ss1"); 78 if (ss21_off != -FDT_ERR_NOTFOUND) 79 FAIL("Incorrectly found ss1 in subnode2"); 80 81 ss12_off = fdt_subnode_offset(fdt, subnode1_offset, "ss2"); 82 if (ss12_off != -FDT_ERR_NOTFOUND) 83 FAIL("Incorrectly found ss2 in subnode1"); 84 check_subnode(fdt, subnode2_offset, "ss2"); 85 86 PASS(); 87} 88