Verify that stacked overlays work.
Signed-off-by: Pantelis Antoniou <pantelis.anton...@konsulko.com>
---
test/overlay/Makefile | 1 +
test/overlay/cmd_ut_overlay.c | 34 ++++++++++++++++++++++++++++++-
test/overlay/test-fdt-overlay-stacked.dts | 21 +++++++++++++++++++
3 files changed, 55 insertions(+), 1 deletion(-)
create mode 100644 test/overlay/test-fdt-overlay-stacked.dts
diff --git a/test/overlay/Makefile b/test/overlay/Makefile
index 907f085..416645c 100644
--- a/test/overlay/Makefile
+++ b/test/overlay/Makefile
@@ -13,3 +13,4 @@ DTC_FLAGS += -@
# DT overlays
obj-y += test-fdt-base.dtb.o
obj-y += test-fdt-overlay.dtb.o
+obj-y += test-fdt-overlay-stacked.dtb.o
diff --git a/test/overlay/cmd_ut_overlay.c b/test/overlay/cmd_ut_overlay.c
index cbef720..d8f5c8f 100644
--- a/test/overlay/cmd_ut_overlay.c
+++ b/test/overlay/cmd_ut_overlay.c
@@ -20,6 +20,7 @@
extern u32 __dtb_test_fdt_base_begin;
extern u32 __dtb_test_fdt_overlay_begin;
+extern u32 __dtb_test_fdt_overlay_stacked_begin;
static int fdt_getprop_u32_by_index(void *fdt, const char *path,
const char *name, int index,
@@ -201,6 +202,19 @@ static int fdt_overlay_local_phandles(struct
unit_test_state *uts)
}
OVERLAY_TEST(fdt_overlay_local_phandles, 0);
+static int fdt_overlay_stacked(struct unit_test_state *uts)
+{
+ void *fdt = uts->priv;
+ u32 val = 0;
+
+ ut_assertok(fdt_getprop_u32(fdt, "/new-local-node",
"stacked-test-int-property",
+ &val));
+ ut_asserteq(43, val);
+
+ return CMD_RET_SUCCESS;
+}
+OVERLAY_TEST(fdt_overlay_stacked, 0);
+
int do_ut_overlay(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct unit_test *tests = ll_entry_start(struct unit_test,
@@ -210,7 +224,8 @@ int do_ut_overlay(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
struct unit_test *test;
void *fdt_base = &__dtb_test_fdt_base_begin;
void *fdt_overlay = &__dtb_test_fdt_overlay_begin;
- void *fdt_base_copy, *fdt_overlay_copy;
+ void *fdt_overlay_stacked = &__dtb_test_fdt_overlay_stacked_begin;
+ void *fdt_base_copy, *fdt_overlay_copy, *fdt_overlay_stacked_copy;
uts = calloc(1, sizeof(*uts));
if (!uts)
@@ -228,6 +243,10 @@ int do_ut_overlay(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
if (!fdt_overlay_copy)
return -ENOMEM;
+ fdt_overlay_stacked_copy = malloc(FDT_COPY_SIZE);
+ if (!fdt_overlay_stacked_copy)
+ return -ENOMEM;
+
/*
* Resize the FDT to 4k so that we have room to operate on
*
@@ -245,9 +264,21 @@ int do_ut_overlay(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
ut_assertok(fdt_open_into(fdt_overlay, fdt_overlay_copy,
FDT_COPY_SIZE));
+ /*
+ * Resize the stacked overlay to 4k so that we have room to operate on
+ *
+ * (and relocate it since the memory might be mapped
+ * read-only)
+ */
+ ut_assertok(fdt_open_into(fdt_overlay_stacked, fdt_overlay_stacked_copy,
+ FDT_COPY_SIZE));
+
/* Apply the overlay */
ut_assertok(fdt_overlay_apply(fdt_base_copy, fdt_overlay_copy));
+ /* Apply the stacked overlay */
+ ut_assertok(fdt_overlay_apply(fdt_base_copy, fdt_overlay_stacked_copy));
+
if (argc == 1)
printf("Running %d environment tests\n", n_ents);
@@ -263,6 +294,7 @@ int do_ut_overlay(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
printf("Failures: %d\n", uts->fail_count);
+ free(fdt_overlay_stacked_copy);
free(fdt_overlay_copy);
free(fdt_base_copy);
free(uts);
diff --git a/test/overlay/test-fdt-overlay-stacked.dts
b/test/overlay/test-fdt-overlay-stacked.dts
new file mode 100644
index 0000000..9fb7c7b
--- /dev/null
+++ b/test/overlay/test-fdt-overlay-stacked.dts
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2016 NextThing Co
+ * Copyright (c) 2016 Free Electrons
+ * Copyright (c) 2018 Konsulko Group
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* Test that we can reference an overlay symbol */
+ fragment@0 {
+ target = <&local>;
+
+ __overlay__ {
+ stacked-test-int-property = <43>;
+ };
+ };
+};
--
2.1.4
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