test/dm: fdtdec: Add tests for fdtdec_add_reserved_memory()

This adds a test case to test the functionality of the fdtdec API
fdtdec_add_reserved_memory().

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/test/dm/fdtdec.c b/test/dm/fdtdec.c
index 999d712..56f6f4f 100644 (file)
--- a/test/dm/fdtdec.c
+++ b/test/dm/fdtdec.c
@@ -59,3 +59,72 @@ static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts)
 }
 DM_TEST(dm_test_fdtdec_set_carveout,
        DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT | DM_TESTF_FLAT_TREE);
+
+static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
+{
+       struct fdt_memory resv;
+       fdt_addr_t addr;
+       fdt_size_t size;
+       void *blob;
+       int blob_sz, parent, subnode;
+       uint32_t phandle, phandle1;
+
+       blob_sz = fdt_totalsize(gd->fdt_blob) + 128;
+       blob = malloc(blob_sz);
+       ut_assertnonnull(blob);
+
+       /* Make a writable copy of the fdt blob */
+       ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
+
+       /* Insert a memory region in /reserved-memory node */
+       resv.start = 0x1000;
+       resv.end = 0x1fff;
+       ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region",
+                                              &resv, &phandle));
+
+       /* Test /reserve-memory and its subnode should exist */
+       parent = fdt_path_offset(blob, "/reserved-memory");
+       ut_assert(parent > 0);
+       subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region");
+       ut_assert(subnode > 0);
+
+       /* Test reg property of /reserved-memory/rsvd_region node */
+       addr = fdtdec_get_addr_size_auto_parent(blob, parent, subnode,
+                                               "reg", 0, &size, false);
+       ut_assert(addr == resv.start);
+       ut_assert(size == resv.end -  resv.start + 1);
+
+       /* Insert another memory region in /reserved-memory node */
+       subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
+       ut_assert(subnode < 0);
+
+       resv.start = 0x2000;
+       resv.end = 0x2fff;
+       ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1",
+                                              &resv, &phandle1));
+       subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
+       ut_assert(subnode > 0);
+
+       /* phandles must be different */
+       ut_assert(phandle != phandle1);
+
+       /*
+        * Insert a 3rd memory region with the same addr/size as the 1st one,
+        * but a new node should not be inserted due to the same addr/size.
+        */
+       resv.start = 0x1000;
+       resv.end = 0x1fff;
+       ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2",
+                                              &resv, &phandle1));
+       subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region2");
+       ut_assert(subnode < 0);
+
+       /* phandle must be same as the 1st one */
+       ut_assert(phandle == phandle1);
+
+       free(blob);
+
+       return 0;
+}
+DM_TEST(dm_test_fdtdec_add_reserved_memory,
+       DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT | DM_TESTF_FLAT_TREE);