/* SPDX-License-Identifier: GPL-2.0-only */ #include <commonlib/device_tree.h> #include <console/console.h> #include <helpers/file.h> #include <stddef.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <tests/test.h> static int setup_device_tree_test_group(void **state) { /* * fattest FDT I could find from Linux Kernel to test the worst cases * https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/nvidia/tegra30-ouya.dts?id=443b349019f2d946 */ const char dtb_path[] = "lib/devicetree-test/tegra30-ouya.dtb"; int file_size = test_get_file_size(dtb_path); assert_int_not_equal(file_size, -1); void *big_fat_dtb = test_malloc(file_size); assert_int_not_equal(big_fat_dtb, NULL); assert_int_equal(test_read_file(dtb_path, big_fat_dtb, file_size), file_size); *state = big_fat_dtb; return 0; } static int teardown_device_tree_test_group(void **state) { test_free(*state); return 0; } static void test_fdt_find_node_by_path(void **state) { uint32_t addrcp, sizecp; assert_int_equal(0, fdt_find_node_by_path(*state, "test", &addrcp, &sizecp)); assert_int_equal(56, fdt_find_node_by_path(*state, "/", &addrcp, &sizecp)); assert_int_equal(2, addrcp); assert_int_equal(1, sizecp); assert_int_equal(0, fdt_find_node_by_path(*state, "/test", &addrcp, &sizecp)); assert_int_equal(0x181f4, fdt_find_node_by_path(*state, "/chosen", &addrcp, &sizecp)); assert_int_equal(1, addrcp); assert_int_equal(1, sizecp); assert_int_equal(0x156d4, fdt_find_node_by_path(*state, "/cpus", &addrcp, &sizecp)); assert_int_equal(1, addrcp); assert_int_equal(1, sizecp); assert_int_equal(0x1517c, fdt_find_node_by_path(*state, "/usb@7d004000/ethernet@2", &addrcp, &sizecp)); assert_int_equal(1, addrcp); assert_int_equal(0, sizecp); assert_int_equal(0x1517c, fdt_find_node_by_path(*state, "/usb@7d004000/ethernet@2/", &addrcp, &sizecp)); assert_int_equal(1, addrcp); assert_int_equal(0, sizecp); assert_int_equal(0xee08, fdt_find_node_by_path(*state, "/pinmux@70000868/pinmux/drive_groups", &addrcp, &sizecp)); } static void test_fdt_find_subnodes_by_prefix(void **state) { uint32_t offset = fdt_find_node_by_path(*state, "/cpus", NULL, NULL); uint32_t results[3] = { 0 }; uint32_t addrcp, sizecp; size_t count_results = fdt_find_subnodes_by_prefix(*state, offset, "cpu@", &addrcp, &sizecp, results, 3); assert_int_equal(3, count_results); assert_int_equal(0x15700, results[0]); assert_int_equal(0x157a0, results[1]); assert_int_equal(0x15840, results[2]); results[1] = 0xDEADBEEF; results[2] = 0xDEADBEEF; count_results = fdt_find_subnodes_by_prefix(*state, offset, "cpu@", &addrcp, &sizecp, results, 1); assert_int_equal(1, count_results); assert_int_equal(0x15700, results[0]); assert_int_equal(0xDEADBEEF, results[1]); assert_int_equal(0xDEADBEEF, results[2]); } static void test_fdt_find_node_by_alias(void **state) { assert_int_equal(0xf298, fdt_find_node_by_alias(*state, "serial0", NULL, NULL)); assert_int_equal(0, fdt_find_node_by_alias(*state, "mmc2", NULL, NULL)); } static void test_fdt_find_prop_in_node(void **state) { uintptr_t cnode_offset = fdt_find_node_by_path(*state, "/clock", NULL, NULL); uintptr_t mnode_offset = fdt_find_node_by_path(*state, "/memory@80000000", NULL, NULL); assert_int_equal(0x18400, cnode_offset); struct fdt_property fdt_prop; assert_int_equal(0x1840c, fdt_read_prop(*state, cnode_offset, "compatible", &fdt_prop)); assert_string_equal("fixed-clock", (char *)fdt_prop.data); assert_int_equal(0x6094, fdt_read_prop(*state, mnode_offset, "reg", &fdt_prop)); assert_int_equal(0x0, fdt_read_prop(*state, cnode_offset, "notfound", &fdt_prop)); } static void test_fdt_read_reg_prop(void **state) { uint32_t addrcp1, sizecp1, addrcp2, sizecp2; uint64_t node_offset1 = fdt_find_node_by_path(*state, "/memory@80000000", &addrcp1, &sizecp1); uint64_t node_offset2 = fdt_find_node_by_path(*state, "/reserved-memory/ramoops@bfdf0000", &addrcp2, &sizecp2); struct device_tree_region regions[3]; regions[0].addr = 0xDEADBEEF; regions[0].size = 0xDEADBEEF; fdt_read_reg_prop(*state, node_offset1, addrcp1, sizecp1, regions, 0); assert_int_equal(0xDEADBEEF, regions[0].addr); assert_int_equal(0xDEADBEEF, regions[0].size); fdt_read_reg_prop(*state, node_offset2, addrcp2, sizecp2, regions, 1); assert_int_equal(0xbfdf0000, regions[0].addr); assert_int_equal(0x00010000, regions[0].size); } int main(void) { const struct CMUnitTest tests[] = { cmocka_unit_test(test_fdt_find_node_by_path), cmocka_unit_test(test_fdt_find_subnodes_by_prefix), cmocka_unit_test(test_fdt_find_node_by_alias), cmocka_unit_test(test_fdt_find_prop_in_node), cmocka_unit_test(test_fdt_read_reg_prop), }; return cb_run_group_tests(tests, setup_device_tree_test_group, teardown_device_tree_test_group); }