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Diffstat (limited to 'dtc/tests/references.c')
| -rw-r--r-- | dtc/tests/references.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/dtc/tests/references.c b/dtc/tests/references.c new file mode 100644 index 000000000..d18e72250 --- /dev/null +++ b/dtc/tests/references.c @@ -0,0 +1,129 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later +/* + * libfdt - Flat Device Tree manipulation + * Testcase for phandle references in dtc + * Copyright (C) 2006 David Gibson, IBM Corporation. + */ +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdint.h> + +#include <libfdt.h> + +#include "tests.h" +#include "testdata.h" + +static void check_ref(const void *fdt, int node, uint32_t checkref) +{ + const fdt32_t *p; + uint32_t ref; + int len; + + p = fdt_getprop(fdt, node, "ref", &len); + if (!p) + FAIL("fdt_getprop(%d, \"ref\"): %s", node, fdt_strerror(len)); + if (len != sizeof(*p)) + FAIL("'ref' in node at %d has wrong size (%d instead of %zd)", + node, len, sizeof(*p)); + ref = fdt32_to_cpu(*p); + if (ref != checkref) + FAIL("'ref' in node at %d has value 0x%x instead of 0x%x", + node, ref, checkref); + + p = fdt_getprop(fdt, node, "lref", &len); + if (!p) + FAIL("fdt_getprop(%d, \"lref\"): %s", node, fdt_strerror(len)); + if (len != sizeof(*p)) + FAIL("'lref' in node at %d has wrong size (%d instead of %zd)", + node, len, sizeof(*p)); + ref = fdt32_to_cpu(*p); + if (ref != checkref) + FAIL("'lref' in node at %d has value 0x%x instead of 0x%x", + node, ref, checkref); +} + +static void check_rref(const void *fdt) +{ + const fdt32_t *p; + uint32_t ref; + int len; + + p = fdt_getprop(fdt, 0, "rref", &len); + if (!p) + FAIL("fdt_getprop(0, \"rref\"): %s", fdt_strerror(len)); + if (len != sizeof(*p)) + FAIL("'rref' in root node has wrong size (%d instead of %zd)", + len, sizeof(*p)); + ref = fdt32_to_cpu(*p); + if (ref != fdt_get_phandle(fdt, 0)) + FAIL("'rref' in root node has value 0x%x instead of 0x0", ref); +} + +int main(int argc, char *argv[]) +{ + void *fdt; + int n1, n2, n3, n4, n5, n6, err; + uint32_t h1, h2, h4, h5, h6, hn; + + test_init(argc, argv); + fdt = load_blob_arg(argc, argv); + + n1 = fdt_path_offset(fdt, "/node1"); + if (n1 < 0) + FAIL("fdt_path_offset(/node1): %s", fdt_strerror(n1)); + n2 = fdt_path_offset(fdt, "/node2"); + if (n2 < 0) + FAIL("fdt_path_offset(/node2): %s", fdt_strerror(n2)); + n3 = fdt_path_offset(fdt, "/node3"); + if (n3 < 0) + FAIL("fdt_path_offset(/node3): %s", fdt_strerror(n3)); + n4 = fdt_path_offset(fdt, "/node4"); + if (n4 < 0) + FAIL("fdt_path_offset(/node4): %s", fdt_strerror(n4)); + n5 = fdt_path_offset(fdt, "/node5"); + if (n5 < 0) + FAIL("fdt_path_offset(/node5): %s", fdt_strerror(n5)); + n6 = fdt_path_offset(fdt, "/node6"); + if (n6 < 0) + FAIL("fdt_path_offset(/node6): %s", fdt_strerror(n6)); + + h1 = fdt_get_phandle(fdt, n1); + h2 = fdt_get_phandle(fdt, n2); + h4 = fdt_get_phandle(fdt, n4); + h5 = fdt_get_phandle(fdt, n5); + h6 = fdt_get_phandle(fdt, n6); + + if (h1 != 0x2000) + FAIL("/node1 has wrong phandle, 0x%x instead of 0x%x", + h1, 0x2000); + if (h2 != 0x1) + FAIL("/node2 has wrong phandle, 0x%x instead of 0x%x", + h2, 0x1); + if (h6 != FDT_MAX_PHANDLE) + FAIL("/node6 has wrong phandle, 0x%x instead of 0x%x", + h6, FDT_MAX_PHANDLE); + if ((h4 == 0x2000) || (h4 == 0x1) || (h4 == 0)) + FAIL("/node4 has bad phandle, 0x%x", h4); + + if ((h5 == 0) || (h5 == -1)) + FAIL("/node5 has bad phandle, 0x%x", h5); + if ((h5 == h4) || (h5 == h2) || (h5 == h1)) + FAIL("/node5 has duplicate phandle, 0x%x", h5); + + /* + * /node6 has phandle FDT_MAX_PHANDLE, so fdt_generate_phandle() is + * expected to fail. + */ + err = fdt_generate_phandle(fdt, &hn); + if (err != -FDT_ERR_NOPHANDLES) + FAIL("generated invalid phandle 0x%x\n", hn); + + check_ref(fdt, n1, h2); + check_ref(fdt, n2, h1); + check_ref(fdt, n3, h4); + + check_rref(fdt); + + PASS(); +} |