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77 lines
1.5 KiB
77 lines
1.5 KiB
// SPDX-License-Identifier: LGPL-2.1-or-later |
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/* |
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* libfdt - Flat Device Tree manipulation |
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* Tests that fdt_next_subnode() works as expected |
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* |
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* Copyright (C) 2013 Google, Inc |
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* |
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* Copyright (C) 2007 David Gibson, IBM Corporation. |
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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 <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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static void test_node(void *fdt, int parent_offset) |
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{ |
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uint32_t subnodes; |
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const fdt32_t *prop; |
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int offset; |
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int count; |
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int len; |
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/* This property indicates the number of subnodes to expect */ |
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prop = fdt_getprop(fdt, parent_offset, "subnodes", &len); |
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if (!prop || len != sizeof(fdt32_t)) { |
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FAIL("Missing/invalid subnodes property at '%s'", |
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fdt_get_name(fdt, parent_offset, NULL)); |
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} |
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subnodes = fdt32_to_cpu(*prop); |
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count = 0; |
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fdt_for_each_subnode(offset, fdt, parent_offset) |
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count++; |
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if (count != subnodes) { |
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FAIL("Node '%s': Expected %d subnodes, got %d\n", |
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fdt_get_name(fdt, parent_offset, NULL), subnodes, |
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count); |
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} |
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} |
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static void check_fdt_next_subnode(void *fdt) |
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{ |
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int offset; |
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int count = 0; |
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fdt_for_each_subnode(offset, fdt, 0) { |
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test_node(fdt, offset); |
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count++; |
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} |
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if (count != 2) |
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FAIL("Expected %d tests, got %d\n", 2, count); |
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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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test_init(argc, argv); |
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if (argc != 2) |
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CONFIG("Usage: %s <dtb file>", argv[0]); |
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fdt = load_blob(argv[1]); |
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if (!fdt) |
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FAIL("No device tree available"); |
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check_fdt_next_subnode(fdt); |
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PASS(); |
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}
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