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test: cmd: fdt: Test fdt get addr

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Add 'fdt get addr' test which works as follows:
- Create fuller FDT, map it to sysmem
- Get address of various properties
- Compare addresses calculated by UT and fdt command

This test is special in that it has to go through gruesome remapping scheme
where the test calculates:
- pointer offsets of the generated FDT root and the property being tested
- map_sysmem() result of environment variable "fdtaddr" and the one set
  by the test matching address of property being tested
- difference between the later and the former, to obtain offset of the
  DT property from start of DT
The offsets must match in both the UT and the tested U-Boot, if they do
not, the test fails.

The test case can be triggered using:
"
./u-boot -Dc 'ut fdt'
"
To dump the full output from commands used during test, add '-v' flag.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Marek Vasut 2023-03-02 04:08:34 +01:00 committed by Simon Glass
parent 890d3fcbed
commit b6d1dece4f
1 changed files with 67 additions and 0 deletions
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67
test/cmd/fdt.c
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@ -481,6 +481,73 @@ static int fdt_test_get_name(struct unit_test_state *uts)
}
FDT_TEST(fdt_test_get_name, UT_TESTF_CONSOLE_REC);
static int fdt_test_get_addr_common(struct unit_test_state *uts, char *fdt,
const char *path, const char *prop)
{
unsigned int offset;
int path_offset;
void *prop_ptr;
int len = 0;
path_offset = fdt_path_offset(fdt, path);
ut_assert(path_offset >= 0);
prop_ptr = (void *)fdt_getprop(fdt, path_offset, prop, &len);
ut_assertnonnull(prop_ptr);
offset = (char *)prop_ptr - fdt;
ut_assertok(console_record_reset_enable());
ut_assertok(run_commandf("fdt get addr pstr %s %s", path, prop));
ut_asserteq((ulong)map_sysmem(env_get_hex("fdtaddr", 0x1234), 0),
(ulong)(map_sysmem(env_get_hex("pstr", 0x1234), 0) - offset));
ut_assertok(ut_check_console_end(uts));
return 0;
}
static int fdt_test_get_addr(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 address of root node / string property "compatible" */
fdt_test_get_addr_common(uts, fdt, "/", "compatible");
/* Test getting address of node /test-node@1234 stringlist property "clock-names" */
fdt_test_get_addr_common(uts, fdt, "/test-node@1234", "clock-names");
fdt_test_get_addr_common(uts, fdt, "testnodealias", "clock-names");
/* Test getting address of node /test-node@1234 u32 property "clock-frequency" */
fdt_test_get_addr_common(uts, fdt, "/test-node@1234", "clock-frequency");
fdt_test_get_addr_common(uts, fdt, "testnodealias", "clock-frequency");
/* Test getting address of node /test-node@1234 empty property "u-boot,empty-property" */
fdt_test_get_addr_common(uts, fdt, "/test-node@1234", "u-boot,empty-property");
fdt_test_get_addr_common(uts, fdt, "testnodealias", "u-boot,empty-property");
/* Test getting address of node /test-node@1234 array property "regs" */
fdt_test_get_addr_common(uts, fdt, "/test-node@1234", "regs");
fdt_test_get_addr_common(uts, fdt, "testnodealias", "regs");
/* Test getting address of node /test-node@1234/subnode non-existent property "noprop" */
ut_assertok(console_record_reset_enable());
ut_asserteq(1, run_command("fdt get addr pnoprop /test-node@1234/subnode noprop", 1));
ut_assert_nextline("libfdt fdt_getprop(): FDT_ERR_NOTFOUND");
ut_assertok(ut_check_console_end(uts));
/* Test getting address of non-existent node /test-node@1234/nonode@1 property "noprop" */
ut_assertok(console_record_reset_enable());
ut_asserteq(1, run_command("fdt get addr pnonode /test-node@1234/nonode@1 noprop", 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_addr, 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);