diff options
Diffstat (limited to 'test/cmd/fdt.c')
| -rw-r--r-- | test/cmd/fdt.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/test/cmd/fdt.c b/test/cmd/fdt.c new file mode 100644 index 0000000000..100a7ef5eb --- /dev/null +++ b/test/cmd/fdt.c @@ -0,0 +1,142 @@ +// 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; +} + +/* 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_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_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_assertok(run_commandf("fdt addr %08x", addr)); + ut_asserteq(addr, map_to_sysmem(working_fdt)); + ut_assertok(ut_check_console_end(uts)); + set_working_fdt_addr(0); + + /* Set the working 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_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_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_assertok(ut_check_console_end(uts)); + + /* Try shrinking it */ + ut_assertok(run_commandf("fdt addr %08x %x", addr, sizeof(fdt) / 4)); + 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_assertok(ut_check_console_end(uts)); + + /* We cannot easily provoke errors in fdt_open_into(), so ignore that */ + + return 0; +} +FDT_TEST(fdt_test_resize, 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); +} |