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test: lmb: add test for overflow protection in lmb_add_region

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Add test for max number of memory regions and in reserved regions.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This commit is contained in:
Patrick Delaunay 2021-03-10 10:16:30 +01:00 committed by Tom Rini
parent cb1e619824
commit a57b596e8b
1 changed files with 64 additions and 0 deletions
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64
test/lib/lmb.c
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@ -659,3 +659,67 @@ static int lib_test_lmb_get_free_size(struct unit_test_state *uts)
DM_TEST(lib_test_lmb_get_free_size,
UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
static int lib_test_lmb_max_regions(struct unit_test_state *uts)
{
const phys_addr_t ram = 0x00000000;
const phys_size_t ram_size = 0x8000000;
const phys_size_t blk_size = 0x10000;
phys_addr_t offset;
struct lmb lmb;
int ret, i;
lmb_init(&lmb);
ut_asserteq(lmb.memory.cnt, 0);
ut_asserteq(lmb.memory.max, 8);
ut_asserteq(lmb.reserved.cnt, 0);
ut_asserteq(lmb.reserved.max, 8);
/* Add 8 memory regions */
for (i = 0; i < 8; i++) {
offset = ram + 2 * i * ram_size;
ret = lmb_add(&lmb, offset, ram_size);
ut_asserteq(ret, 0);
}
ut_asserteq(lmb.memory.cnt, 8);
ut_asserteq(lmb.reserved.cnt, 0);
/* error for the 9th memory regions */
offset = ram + 2 * 8 * ram_size;
ret = lmb_add(&lmb, offset, ram_size);
ut_asserteq(ret, -1);
ut_asserteq(lmb.memory.cnt, 8);
ut_asserteq(lmb.reserved.cnt, 0);
/* reserve 8 regions */
for (i = 0; i < 8; i++) {
offset = ram + 2 * i * blk_size;
ret = lmb_reserve(&lmb, offset, blk_size);
ut_asserteq(ret, 0);
}
ut_asserteq(lmb.memory.cnt, 8);
ut_asserteq(lmb.reserved.cnt, 8);
/* error for the 9th reserved blocks */
offset = ram + 2 * 8 * blk_size;
ret = lmb_reserve(&lmb, offset, blk_size);
ut_asserteq(ret, -1);
ut_asserteq(lmb.memory.cnt, 8);
ut_asserteq(lmb.reserved.cnt, 8);
/* check each regions */
for (i = 0; i < 8; i++)
ut_asserteq(lmb.memory.region[i].base, ram + 2 * i * ram_size);
for (i = 0; i < 8; i++)
ut_asserteq(lmb.reserved.region[i].base, ram + 2 * i * blk_size);
return 0;
}
DM_TEST(lib_test_lmb_max_regions,
UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);