Add 'fdt memory' test which works as follows:
- Create custom FDT with /memory node, with select #*cells, map it to sysmem
- Perform memory fixup
- Read back the /memory node and validate its content
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+rene...@mailbox.org>
Reviewed-by: Simon Glass <s...@chromium.org>
---
Cc: Heinrich Schuchardt <heinrich.schucha...@canonical.com>
Cc: Simon Glass <s...@chromium.org>
Cc: Tom Rini <tr...@konsulko.com>
---
V2: Add RB from Simon
---
test/cmd/fdt.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 83 insertions(+)
diff --git a/test/cmd/fdt.c b/test/cmd/fdt.c
index 03ec080716c..27eb1349a2b 100644
--- a/test/cmd/fdt.c
+++ b/test/cmd/fdt.c
@@ -1166,6 +1166,89 @@ static int fdt_test_bootcpu(struct unit_test_state *uts)
}
FDT_TEST(fdt_test_bootcpu, UT_TESTF_CONSOLE_REC);
+static int fdt_test_memory_cells(struct unit_test_state *uts,
+ const unsigned int cells)
+{
+ unsigned char *pada, *pads;
+ unsigned char *seta, *sets;
+ char fdt[8192];
+ const int size = sizeof(fdt);
+ fdt32_t *regs;
+ ulong addr;
+ char *spc;
+ int i;
+
+ /* Create DT with node /memory { regs = <0x100 0x200>; } and #*cells */
+ ut_assertnonnull(regs = calloc(2 * cells, sizeof(*regs)));
+ ut_assertnonnull(pada = calloc(12, cells));
+ ut_assertnonnull(pads = calloc(12, cells));
+ ut_assertnonnull(seta = calloc(12, cells));
+ ut_assertnonnull(sets = calloc(12, cells));
+ for (i = cells; i >= 1; i--) {
+ regs[cells - 1] = cpu_to_fdt32(i * 0x10000);
+ regs[(cells * 2) - 1] = cpu_to_fdt32(~i);
+ snprintf(seta + (8 * (cells - i)), 9, "%08x", i * 0x10000);
+ snprintf(sets + (8 * (cells - i)), 9, "%08x", ~i);
+ spc = (i != 1) ? " " : "";
+ snprintf(pada + (11 * (cells - i)), 12, "0x%08x%s", i *
0x10000, spc);
+ snprintf(pads + (11 * (cells - i)), 12, "0x%08x%s", ~i, spc);
+ }
+
+ 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", cells));
+ ut_assertok(fdt_property_u32(fdt, "#size-cells", cells));
+ ut_assert(fdt_begin_node(fdt, "memory") >= 0);
+ ut_assertok(fdt_property_string(fdt, "device_type", "memory"));
+ ut_assertok(fdt_property(fdt, "reg", ®s, cells * 2));
+ ut_assertok(fdt_end_node(fdt));
+ ut_assertok(fdt_end_node(fdt));
+ ut_assertok(fdt_finish(fdt));
+ fdt_shrink_to_minimum(fdt, 4096); /* Resize with 4096 extra bytes
*/
+ addr = map_to_sysmem(fdt);
+ set_working_fdt_addr(addr);
+
+ /* Test updating the memory node */
+ ut_assertok(console_record_reset_enable());
+ ut_assertok(run_commandf("fdt memory 0x%s 0x%s", seta, sets));
+ ut_assertok(run_commandf("fdt print /memory"));
+ ut_assert_nextline("memory {");
+ ut_assert_nextline("\tdevice_type = \"memory\";");
+ ut_assert_nextline("\treg = <%s %s>;", pada, pads);
+ ut_assert_nextline("};");
+ ut_assertok(ut_check_console_end(uts));
+
+ free(sets);
+ free(seta);
+ free(pads);
+ free(pada);
+ free(regs);
+
+ return 0;
+}
+
+static int fdt_test_memory(struct unit_test_state *uts)
+{
+ /*
+ * Test memory fixup for 32 and 64 bit systems, anything bigger is
+ * so far unsupported and fails because of simple_stroull() being
+ * 64bit tops in the 'fdt memory' command implementation.
+ */
+ fdt_test_memory_cells(uts, 1);
+ fdt_test_memory_cells(uts, 2);
+
+ /*
+ * The 'fdt memory' command is limited to /memory node, it does
+ * not support any other valid DT memory node format, which is
+ * either one or multiple /memory@adresss nodes. Therefore, this
+ * DT variant is not tested here.
+ */
+
+ return 0;
+}
+FDT_TEST(fdt_test_memory, 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);
--
2.39.2
