If FADT has HW_REDUCED_ACPI flag set, do not attempt to fetch
FACS as it's not provided by the board.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Wei Yang <richardw.yang@linux.intel.com>
---
 tests/bios-tables-test.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
index d165a1b..e2fc341 100644
--- a/tests/bios-tables-test.c
+++ b/tests/bios-tables-test.c
@@ -147,9 +147,13 @@ static void test_acpi_fadt_table(test_data *data)
     g_assert(compare_signature(&table, "FACP"));
 
     /* Since DSDT/FACS isn't in RSDT, add them to ASL test list manually */
-    acpi_fetch_table(data->qts, &table.aml, &table.aml_len,
-                     fadt_aml + 36 /* FIRMWARE_CTRL */, 4, "FACS", false);
-    g_array_append_val(data->tables, table);
+    memcpy(&val, fadt_aml + 112 /* Flags */, 4);
+    val = le32_to_cpu(val);
+    if (!(val & 1UL << 20 /* HW_REDUCED_ACPI */)) {
+        acpi_fetch_table(data->qts, &table.aml, &table.aml_len,
+                         fadt_aml + 36 /* FIRMWARE_CTRL */, 4, "FACS", false);
+        g_array_append_val(data->tables, table);
+    }
 
     memcpy(&val, fadt_aml + dsdt_offset, 4);
     val = le32_to_cpu(val);
-- 
2.7.4