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

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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>
This commit is contained in:
Bin Meng 2020-06-22 22:55:49 -07:00 committed by Simon Glass
parent 866f11efd7
commit 229806f759
1 changed files with 69 additions and 0 deletions
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69
test/dm/fdtdec.c
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@ -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);