test: unit test for acpi_find_table()

Provide a unit test for acpi_find_table()

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/test/dm/acpi.c b/test/dm/acpi.c
index 5997bda649bda5eec54fe6a802939edc2598b2ec..5236b3994e2930705c7787d8e812ffbe84d0a2a6 100644 (file)
--- a/test/dm/acpi.c
+++ b/test/dm/acpi.c
@@ -651,3 +651,99 @@ static int dm_test_acpi_cmd_set(struct unit_test_state *uts)
        return 0;
 }
 DM_TEST(dm_test_acpi_cmd_set, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
+
+/**
+ * dm_test_write_test_table() - create test ACPI table
+ *
+ * Create an ACPI table TSTn, where n is given by @index.
+ *
+ * @ctx:       ACPI table writing context
+ * @index:     table index
+ * Return:     generated table
+ */
+static struct acpi_table_header
+*dm_test_write_test_table(struct acpi_ctx *ctx, int index)
+{
+       struct acpi_table_header *tbl = ctx->current;
+       char signature[5];
+
+       snprintf(signature, sizeof(signature), "TST%1d", index);
+       memset(tbl, 0, sizeof(*tbl));
+       acpi_fill_header(tbl, signature);
+       acpi_inc(ctx, sizeof(struct acpi_table_header));
+       tbl->length = (u8 *)ctx->current - (u8 *)tbl;
+       tbl->checksum = table_compute_checksum(tbl, tbl->length);
+       acpi_add_table(ctx, tbl);
+
+       return tbl;
+}
+
+/* Test acpi_find_table() */
+static int dm_test_acpi_find_table(struct unit_test_state *uts)
+{
+       struct acpi_ctx ctx;
+       ulong acpi_start, addr;
+       void *buf;
+       struct acpi_table_header *table, *table1, *table2, *table3;
+       struct acpi_rsdp *rsdp;
+       ulong rsdt;
+       ulong xsdt;
+
+       /* Keep reference to original ACPI tables */
+       acpi_start = gd_acpi_start();
+
+       /* Setup new ACPI tables */
+       buf = memalign(16, BUF_SIZE);
+       ut_assertnonnull(buf);
+       addr = map_to_sysmem(buf);
+       ut_assertok(setup_ctx_and_base_tables(uts, &ctx, addr));
+       table3 = dm_test_write_test_table(&ctx, 3);
+       table1 = dm_test_write_test_table(&ctx, 1);
+       table2 = dm_test_write_test_table(&ctx, 2);
+
+       /* Retrieve RSDP, RSDT, XSDT */
+       rsdp = map_sysmem(gd_acpi_start(), 0);
+       ut_assertnonnull(rsdp);
+       rsdt = rsdp->rsdt_address;
+       ut_assert(rsdt);
+       xsdt = rsdp->xsdt_address;
+       ut_assert(xsdt);
+
+       /* Find with both RSDT and XSDT */
+       table = acpi_find_table("TST1");
+       ut_asserteq_ptr(table1, table);
+       ut_asserteq_strn("TST1", table->signature);
+       table = acpi_find_table("TST2");
+       ut_asserteq_ptr(table2, table);
+       ut_asserteq_strn("TST2", table->signature);
+       table = acpi_find_table("TST3");
+       ut_asserteq_ptr(table3, table);
+       ut_asserteq_strn("TST3", table->signature);
+
+       /* Find with XSDT only */
+       rsdp->rsdt_address = 0;
+       table = acpi_find_table("TST1");
+       ut_asserteq_ptr(table1, table);
+       table = acpi_find_table("TST2");
+       ut_asserteq_ptr(table2, table);
+       table = acpi_find_table("TST3");
+       ut_asserteq_ptr(table3, table);
+       rsdp->rsdt_address = rsdt;
+
+       /* Find with RSDT only */
+       rsdp->xsdt_address = 0;
+       table = acpi_find_table("TST1");
+       ut_asserteq_ptr(table1, table);
+       table = acpi_find_table("TST2");
+       ut_asserteq_ptr(table2, table);
+       table = acpi_find_table("TST3");
+       ut_asserteq_ptr(table3, table);
+       rsdp->xsdt_address = xsdt;
+
+       /* Restore previous ACPI tables */
+       gd_set_acpi_start(acpi_start);
+       free(buf);
+
+       return 0;
+}
+DM_TEST(dm_test_acpi_find_table, 0);