fdt: Start a test for the fdt command
Add a basic test of the 'fdt addr' command, to kick things off.
This includes a new convenience function to run a command from a printf()
string.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/cmd/Makefile b/test/cmd/Makefile
index 4b2d7df..c331757 100644
--- a/test/cmd/Makefile
+++ b/test/cmd/Makefile
@@ -7,6 +7,7 @@
endif
obj-y += mem.o
obj-$(CONFIG_CMD_ADDRMAP) += addrmap.o
+obj-$(CONFIG_CMD_FDT) += fdt.o
obj-$(CONFIG_CMD_LOADM) += loadm.o
obj-$(CONFIG_CMD_MEM_SEARCH) += mem_search.o
obj-$(CONFIG_CMD_PINMUX) += pinmux.o
diff --git a/test/cmd/fdt.c b/test/cmd/fdt.c
new file mode 100644
index 0000000..100a7ef
--- /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);
+}