baf4141079
The working FDT is the one which comes from the OS and is fixed up by U-Boot. When the bootm command runs, it sets up the working FDT to be the one it is about to pass to the OS, so that fixups can happen. This seems like an important step, so add a message indicating that the working FDT has changed. This is shown during the running of the bootm command. Signed-off-by: Simon Glass <sjg@chromium.org>
152 lines
4.5 KiB
C
152 lines
4.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Tests for fdt command
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*
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* Copyright 2022 Google LLCmap_to_sysmem(fdt));
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*/
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#include <common.h>
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#include <console.h>
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#include <fdt_support.h>
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#include <mapmem.h>
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#include <asm/global_data.h>
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#include <linux/libfdt.h>
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#include <test/suites.h>
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#include <test/ut.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* Declare a new fdt test */
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#define FDT_TEST(_name, _flags) UNIT_TEST(_name, _flags, fdt_test)
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/**
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* make_test_fdt() - Create an FDT with just a root node
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*
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* The size is set to the minimum needed
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*
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* @uts: Test state
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* @fdt: Place to write FDT
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* @size: Maximum size of space for fdt
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*/
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static int make_test_fdt(struct unit_test_state *uts, void *fdt, int size)
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{
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ut_assertok(fdt_create(fdt, size));
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ut_assertok(fdt_finish_reservemap(fdt));
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ut_assert(fdt_begin_node(fdt, "") >= 0);
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ut_assertok(fdt_end_node(fdt));
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ut_assertok(fdt_finish(fdt));
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return 0;
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}
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/* Test 'fdt addr' getting/setting address */
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static int fdt_test_addr(struct unit_test_state *uts)
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{
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const void *fdt_blob, *new_fdt;
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char fdt[256];
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ulong addr;
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int ret;
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ut_assertok(console_record_reset_enable());
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ut_assertok(run_command("fdt addr -c", 0));
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ut_assert_nextline("Control fdt: %08lx",
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(ulong)map_to_sysmem(gd->fdt_blob));
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ut_assertok(ut_check_console_end(uts));
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/* The working fdt is not set, so this should fail */
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set_working_fdt_addr(0);
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ut_assert_nextline("Working FDT set to 0");
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ut_asserteq(CMD_RET_FAILURE, run_command("fdt addr", 0));
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ut_assert_nextline("libfdt fdt_check_header(): FDT_ERR_BADMAGIC");
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ut_assertok(ut_check_console_end(uts));
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/* Set up a working FDT and try again */
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ut_assertok(make_test_fdt(uts, fdt, sizeof(fdt)));
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addr = map_to_sysmem(fdt);
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set_working_fdt_addr(addr);
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ut_assert_nextline("Working FDT set to %lx", addr);
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ut_assertok(run_command("fdt addr", 0));
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ut_assert_nextline("Working fdt: %08lx", (ulong)map_to_sysmem(fdt));
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ut_assertok(ut_check_console_end(uts));
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/* Set the working FDT */
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set_working_fdt_addr(0);
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ut_assert_nextline("Working FDT set to 0");
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ut_assertok(run_commandf("fdt addr %08x", addr));
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ut_assert_nextline("Working FDT set to %lx", addr);
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ut_asserteq(addr, map_to_sysmem(working_fdt));
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ut_assertok(ut_check_console_end(uts));
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set_working_fdt_addr(0);
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ut_assert_nextline("Working FDT set to 0");
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/* Set the control FDT */
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fdt_blob = gd->fdt_blob;
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gd->fdt_blob = NULL;
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ret = run_commandf("fdt addr -c %08x", addr);
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new_fdt = gd->fdt_blob;
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gd->fdt_blob = fdt_blob;
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ut_assertok(ret);
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ut_asserteq(addr, map_to_sysmem(new_fdt));
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ut_assertok(ut_check_console_end(uts));
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/* Test setting an invalid FDT */
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fdt[0] = 123;
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ut_asserteq(1, run_commandf("fdt addr %08x", addr));
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ut_assert_nextline("libfdt fdt_check_header(): FDT_ERR_BADMAGIC");
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ut_assertok(ut_check_console_end(uts));
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/* Test detecting an invalid FDT */
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fdt[0] = 123;
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set_working_fdt_addr(addr);
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ut_assert_nextline("Working FDT set to %lx", addr);
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ut_asserteq(1, run_commandf("fdt addr"));
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ut_assert_nextline("libfdt fdt_check_header(): FDT_ERR_BADMAGIC");
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ut_assertok(ut_check_console_end(uts));
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return 0;
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}
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FDT_TEST(fdt_test_addr, UT_TESTF_CONSOLE_REC);
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/* Test 'fdt addr' resizing an fdt */
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static int fdt_test_resize(struct unit_test_state *uts)
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{
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char fdt[256];
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const int newsize = sizeof(fdt) / 2;
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ulong addr;
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ut_assertok(make_test_fdt(uts, fdt, sizeof(fdt)));
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addr = map_to_sysmem(fdt);
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set_working_fdt_addr(addr);
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/* Test setting and resizing the working FDT to a larger size */
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ut_assertok(console_record_reset_enable());
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ut_assertok(run_commandf("fdt addr %08x %x", addr, newsize));
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ut_assert_nextline("Working FDT set to %lx", addr);
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ut_assertok(ut_check_console_end(uts));
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/* Try shrinking it */
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ut_assertok(run_commandf("fdt addr %08x %x", addr, sizeof(fdt) / 4));
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ut_assert_nextline("Working FDT set to %lx", addr);
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ut_assert_nextline("New length %d < existing length %d, ignoring",
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(int)sizeof(fdt) / 4, newsize);
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ut_assertok(ut_check_console_end(uts));
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/* ...quietly */
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ut_assertok(run_commandf("fdt addr -q %08x %x", addr, sizeof(fdt) / 4));
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ut_assert_nextline("Working FDT set to %lx", addr);
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ut_assertok(ut_check_console_end(uts));
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/* We cannot easily provoke errors in fdt_open_into(), so ignore that */
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return 0;
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}
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FDT_TEST(fdt_test_resize, UT_TESTF_CONSOLE_REC);
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int do_ut_fdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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struct unit_test *tests = UNIT_TEST_SUITE_START(fdt_test);
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const int n_ents = UNIT_TEST_SUITE_COUNT(fdt_test);
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return cmd_ut_category("fdt", "fdt_test_", tests, n_ents, argc, argv);
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}
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