| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Tests for fdt command |
| * |
| * Copyright 2022 Google LLCmap_to_sysmem(fdt)); |
| */ |
| |
| #include <common.h> |
| #include <console.h> |
| #include <fdt_support.h> |
| #include <mapmem.h> |
| #include <asm/global_data.h> |
| #include <linux/libfdt.h> |
| #include <test/suites.h> |
| #include <test/ut.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| /* Declare a new fdt test */ |
| #define FDT_TEST(_name, _flags) UNIT_TEST(_name, _flags, fdt_test) |
| |
| /** |
| * make_test_fdt() - Create an FDT with just a root node |
| * |
| * The size is set to the minimum needed |
| * |
| * @uts: Test state |
| * @fdt: Place to write FDT |
| * @size: Maximum size of space for fdt |
| */ |
| static int make_test_fdt(struct unit_test_state *uts, void *fdt, int size) |
| { |
| ut_assertok(fdt_create(fdt, size)); |
| ut_assertok(fdt_finish_reservemap(fdt)); |
| ut_assert(fdt_begin_node(fdt, "") >= 0); |
| ut_assertok(fdt_end_node(fdt)); |
| ut_assertok(fdt_finish(fdt)); |
| |
| return 0; |
| } |
| |
| /** |
| * make_fuller_fdt() - Create an FDT with root node and properties |
| * |
| * The size is set to the minimum needed |
| * |
| * @uts: Test state |
| * @fdt: Place to write FDT |
| * @size: Maximum size of space for fdt |
| */ |
| static int make_fuller_fdt(struct unit_test_state *uts, void *fdt, int size) |
| { |
| fdt32_t regs[2] = { cpu_to_fdt32(0x1234), cpu_to_fdt32(0x1000) }; |
| |
| /* |
| * Assemble the following DT for test purposes: |
| * |
| * / { |
| * #address-cells = <0x00000001>; |
| * #size-cells = <0x00000001>; |
| * compatible = "u-boot,fdt-test"; |
| * model = "U-Boot FDT test"; |
| * |
| * aliases { |
| * badalias = "/bad/alias"; |
| * subnodealias = "/test-node@1234/subnode"; |
| * testnodealias = "/test-node@1234"; |
| * }; |
| * |
| * test-node@1234 { |
| * #address-cells = <0x00000000>; |
| * #size-cells = <0x00000000>; |
| * compatible = "u-boot,fdt-test-device1"; |
| * clock-names = "fixed", "i2c", "spi", "uart2", "uart1"; |
| * u-boot,empty-property; |
| * clock-frequency = <0x00fde800>; |
| * regs = <0x00001234 0x00001000>; |
| * |
| * subnode { |
| * #address-cells = <0x00000000>; |
| * #size-cells = <0x00000000>; |
| * compatible = "u-boot,fdt-subnode-test-device"; |
| * }; |
| * }; |
| * }; |
| */ |
| |
| ut_assertok(fdt_create(fdt, size)); |
| ut_assertok(fdt_finish_reservemap(fdt)); |
| ut_assert(fdt_begin_node(fdt, "") >= 0); |
| |
| ut_assertok(fdt_property_u32(fdt, "#address-cells", 1)); |
| ut_assertok(fdt_property_u32(fdt, "#size-cells", 1)); |
| /* <string> */ |
| ut_assertok(fdt_property_string(fdt, "compatible", "u-boot,fdt-test")); |
| /* <string> */ |
| ut_assertok(fdt_property_string(fdt, "model", "U-Boot FDT test")); |
| |
| ut_assert(fdt_begin_node(fdt, "aliases") >= 0); |
| /* <string> */ |
| ut_assertok(fdt_property_string(fdt, "badalias", "/bad/alias")); |
| /* <string> */ |
| ut_assertok(fdt_property_string(fdt, "subnodealias", "/test-node@1234/subnode")); |
| /* <string> */ |
| ut_assertok(fdt_property_string(fdt, "testnodealias", "/test-node@1234")); |
| ut_assertok(fdt_end_node(fdt)); |
| |
| ut_assert(fdt_begin_node(fdt, "test-node@1234") >= 0); |
| ut_assertok(fdt_property_cell(fdt, "#address-cells", 0)); |
| ut_assertok(fdt_property_cell(fdt, "#size-cells", 0)); |
| /* <string> */ |
| ut_assertok(fdt_property_string(fdt, "compatible", "u-boot,fdt-test-device1")); |
| /* <stringlist> */ |
| ut_assertok(fdt_property(fdt, "clock-names", "fixed\0i2c\0spi\0uart2\0uart1\0", 26)); |
| /* <empty> */ |
| ut_assertok(fdt_property(fdt, "u-boot,empty-property", NULL, 0)); |
| /* |
| * <u32> |
| * This value is deliberate as it used to break cmd/fdt.c |
| * is_printable_string() implementation. |
| */ |
| ut_assertok(fdt_property_u32(fdt, "clock-frequency", 16640000)); |
| /* <prop-encoded-array> */ |
| ut_assertok(fdt_property(fdt, "regs", ®s, sizeof(regs))); |
| ut_assert(fdt_begin_node(fdt, "subnode") >= 0); |
| ut_assertok(fdt_property_cell(fdt, "#address-cells", 0)); |
| ut_assertok(fdt_property_cell(fdt, "#size-cells", 0)); |
| ut_assertok(fdt_property_string(fdt, "compatible", "u-boot,fdt-subnode-test-device")); |
| ut_assertok(fdt_end_node(fdt)); |
| ut_assertok(fdt_end_node(fdt)); |
| |
| ut_assertok(fdt_end_node(fdt)); |
| ut_assertok(fdt_finish(fdt)); |
| |
| return 0; |
| } |
| |
| /* Test 'fdt addr' getting/setting address */ |
| static int fdt_test_addr(struct unit_test_state *uts) |
| { |
| const void *fdt_blob, *new_fdt; |
| char fdt[256]; |
| ulong addr; |
| int ret; |
| |
| ut_assertok(console_record_reset_enable()); |
| ut_assertok(run_command("fdt addr -c", 0)); |
| ut_assert_nextline("Control fdt: %08lx", |
| (ulong)map_to_sysmem(gd->fdt_blob)); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* The working fdt is not set, so this should fail */ |
| set_working_fdt_addr(0); |
| ut_assert_nextline("Working FDT set to 0"); |
| ut_asserteq(CMD_RET_FAILURE, run_command("fdt addr", 0)); |
| ut_assert_nextline("libfdt fdt_check_header(): FDT_ERR_BADMAGIC"); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Set up a working FDT and try again */ |
| ut_assertok(make_test_fdt(uts, fdt, sizeof(fdt))); |
| addr = map_to_sysmem(fdt); |
| set_working_fdt_addr(addr); |
| ut_assert_nextline("Working FDT set to %lx", addr); |
| ut_assertok(run_command("fdt addr", 0)); |
| ut_assert_nextline("Working fdt: %08lx", (ulong)map_to_sysmem(fdt)); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Set the working FDT */ |
| set_working_fdt_addr(0); |
| ut_assert_nextline("Working FDT set to 0"); |
| ut_assertok(run_commandf("fdt addr %08x", addr)); |
| ut_assert_nextline("Working FDT set to %lx", addr); |
| ut_asserteq(addr, map_to_sysmem(working_fdt)); |
| ut_assertok(ut_check_console_end(uts)); |
| set_working_fdt_addr(0); |
| ut_assert_nextline("Working FDT set to 0"); |
| |
| /* Set the control FDT */ |
| fdt_blob = gd->fdt_blob; |
| gd->fdt_blob = NULL; |
| ret = run_commandf("fdt addr -c %08x", addr); |
| new_fdt = gd->fdt_blob; |
| gd->fdt_blob = fdt_blob; |
| ut_assertok(ret); |
| ut_asserteq(addr, map_to_sysmem(new_fdt)); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Test setting an invalid FDT */ |
| fdt[0] = 123; |
| ut_asserteq(1, run_commandf("fdt addr %08x", addr)); |
| ut_assert_nextline("libfdt fdt_check_header(): FDT_ERR_BADMAGIC"); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Test detecting an invalid FDT */ |
| fdt[0] = 123; |
| set_working_fdt_addr(addr); |
| ut_assert_nextline("Working FDT set to %lx", addr); |
| ut_asserteq(1, run_commandf("fdt addr")); |
| ut_assert_nextline("libfdt fdt_check_header(): FDT_ERR_BADMAGIC"); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| return 0; |
| } |
| FDT_TEST(fdt_test_addr, UT_TESTF_CONSOLE_REC); |
| |
| /* Test 'fdt addr' resizing an fdt */ |
| static int fdt_test_addr_resize(struct unit_test_state *uts) |
| { |
| char fdt[256]; |
| const int newsize = sizeof(fdt) / 2; |
| ulong addr; |
| |
| ut_assertok(make_test_fdt(uts, fdt, sizeof(fdt))); |
| addr = map_to_sysmem(fdt); |
| set_working_fdt_addr(addr); |
| |
| /* Test setting and resizing the working FDT to a larger size */ |
| ut_assertok(console_record_reset_enable()); |
| ut_assertok(run_commandf("fdt addr %08x %x", addr, newsize)); |
| ut_assert_nextline("Working FDT set to %lx", addr); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Try shrinking it */ |
| ut_assertok(run_commandf("fdt addr %08x %x", addr, sizeof(fdt) / 4)); |
| ut_assert_nextline("Working FDT set to %lx", addr); |
| ut_assert_nextline("New length %d < existing length %d, ignoring", |
| (int)sizeof(fdt) / 4, newsize); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* ...quietly */ |
| ut_assertok(run_commandf("fdt addr -q %08x %x", addr, sizeof(fdt) / 4)); |
| ut_assert_nextline("Working FDT set to %lx", addr); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* We cannot easily provoke errors in fdt_open_into(), so ignore that */ |
| |
| return 0; |
| } |
| FDT_TEST(fdt_test_addr_resize, UT_TESTF_CONSOLE_REC); |
| |
| /* Test 'fdt get value' reading an fdt */ |
| static int fdt_test_get_value(struct unit_test_state *uts) |
| { |
| char fdt[4096]; |
| ulong addr; |
| |
| ut_assertok(make_fuller_fdt(uts, fdt, sizeof(fdt))); |
| addr = map_to_sysmem(fdt); |
| set_working_fdt_addr(addr); |
| |
| /* Test getting default element of /test-node@1234 node clock-names property */ |
| ut_assertok(console_record_reset_enable()); |
| ut_assertok(run_command("fdt get value fdflt /test-node@1234 clock-names", 0)); |
| ut_asserteq_str("fixed", env_get("fdflt")); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Test getting 0th element of /test-node@1234 node clock-names property */ |
| ut_assertok(console_record_reset_enable()); |
| ut_assertok(run_command("fdt get value fzero /test-node@1234 clock-names 0", 0)); |
| ut_asserteq_str("fixed", env_get("fzero")); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Test getting 1st element of /test-node@1234 node clock-names property */ |
| ut_assertok(console_record_reset_enable()); |
| ut_assertok(run_command("fdt get value fone /test-node@1234 clock-names 1", 0)); |
| ut_asserteq_str("i2c", env_get("fone")); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Test getting 2nd element of /test-node@1234 node clock-names property */ |
| ut_assertok(console_record_reset_enable()); |
| ut_assertok(run_command("fdt get value ftwo /test-node@1234 clock-names 2", 0)); |
| ut_asserteq_str("spi", env_get("ftwo")); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Test missing 10th element of /test-node@1234 node clock-names property */ |
| ut_assertok(console_record_reset_enable()); |
| ut_asserteq(1, run_command("fdt get value ften /test-node@1234 clock-names 10", 0)); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Test getting default element of /test-node@1234 node nonexistent property */ |
| ut_assertok(console_record_reset_enable()); |
| ut_asserteq(1, run_command("fdt get value fnone /test-node@1234 nonexistent", 1)); |
| ut_assert_nextline("libfdt fdt_getprop(): FDT_ERR_NOTFOUND"); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| /* Test getting default element of /nonexistent node */ |
| ut_assertok(console_record_reset_enable()); |
| ut_asserteq(1, run_command("fdt get value fnode /nonexistent nonexistent", 1)); |
| ut_assert_nextline("libfdt fdt_path_offset() returned FDT_ERR_NOTFOUND"); |
| ut_assertok(ut_check_console_end(uts)); |
| |
| return 0; |
| } |
| FDT_TEST(fdt_test_get_value, UT_TESTF_CONSOLE_REC); |
| |
| int do_ut_fdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) |
| { |
| struct unit_test *tests = UNIT_TEST_SUITE_START(fdt_test); |
| const int n_ents = UNIT_TEST_SUITE_COUNT(fdt_test); |
| |
| return cmd_ut_category("fdt", "fdt_test_", tests, n_ents, argc, argv); |
| } |