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authorThomas Huth <thuth@redhat.com>2016-06-14 15:57:56 +0200
committerDavid Gibson <david@gibson.dropbear.id.au>2016-06-17 15:57:59 +1000
commitfcbf4a3c0c576eec1321f9cff4fa0dd8e0b1a82f (patch)
tree62b8cb2b380c5d5a9be290dacdf6bcffee42c781 /tests/prom-env-test.c
parenta1aa1309892581972b5019ef65fd0a12cd69cc28 (diff)
ppc / sparc: Add a tester for checking whether OpenBIOS runs successfully
Since the mac99 and g3beige PowerPC machines recently broke without being noticed, it would be good to have a tester for "make check" that detects such issues immediately. A simple way to test the firmware of these machines is to use the "-prom-env" parameter of QEMU. This parameter can be used to put some Forth code into the 'boot-command' firmware variable which then can signal success to the tester by writing a magic value to a known memory location. And since some of the Sparc machines are also using OpenBIOS, they are now tested with this prom-env-tester, too. Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> [dwg: Removed sparc64, because it trips a TCG bug on 32-bit hosts] Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'tests/prom-env-test.c')
-rw-r--r--tests/prom-env-test.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/tests/prom-env-test.c b/tests/prom-env-test.c
new file mode 100644
index 0000000000..6df57d224b
--- /dev/null
+++ b/tests/prom-env-test.c
@@ -0,0 +1,90 @@
+/*
+ * Test OpenBIOS-based machines.
+ *
+ * Copyright (c) 2016 Red Hat Inc.
+ *
+ * Author:
+ * Thomas Huth <thuth@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2
+ * or later. See the COPYING file in the top-level directory.
+ *
+ * This test is used to check that some OpenBIOS machines can be started
+ * successfully in TCG mode. To do this, we first put some Forth code into
+ * the "boot-command" Open Firmware environment variable. This Forth code
+ * writes a well-known magic value to a known location in memory. Then we
+ * start the guest so that OpenBIOS can boot and finally run the Forth code.
+ * The testing code here then can finally check whether the value has been
+ * successfully written into the guest memory.
+ */
+
+#include "qemu/osdep.h"
+#include "libqtest.h"
+
+#define MAGIC 0xcafec0de
+#define ADDRESS 0x4000
+
+static void check_guest_memory(void)
+{
+ uint32_t signature;
+ int i;
+
+ /* Poll until code has run and modified memory. Wait at most 30 seconds */
+ for (i = 0; i < 3000; ++i) {
+ signature = readl(ADDRESS);
+ if (signature == MAGIC) {
+ break;
+ }
+ g_usleep(10000);
+ }
+
+ g_assert_cmphex(signature, ==, MAGIC);
+}
+
+static void test_machine(const void *machine)
+{
+ char *args;
+
+ args = g_strdup_printf("-M %s,accel=tcg -prom-env 'boot-command=%x %x l!'",
+ (const char *)machine, MAGIC, ADDRESS);
+
+ qtest_start(args);
+ check_guest_memory();
+ qtest_quit(global_qtest);
+
+ g_free(args);
+}
+
+static void add_tests(const char *machines[])
+{
+ int i;
+ char *name;
+
+ for (i = 0; machines[i] != NULL; i++) {
+ name = g_strdup_printf("prom-env/%s", machines[i]);
+ qtest_add_data_func(name, machines[i], test_machine);
+ g_free(name);
+ }
+}
+
+int main(int argc, char *argv[])
+{
+ const char *sparc_machines[] = { "SPARCbook", "Voyager", "SS-20", NULL };
+ const char *sparc64_machines[] = { "sun4u", "sun4v", NULL };
+ const char *mac_machines[] = { "mac99", "g3beige", NULL };
+ const char *arch = qtest_get_arch();
+
+ g_test_init(&argc, &argv, NULL);
+
+ if (!strcmp(arch, "ppc") || !strcmp(arch, "ppc64")) {
+ add_tests(mac_machines);
+ } else if (!strcmp(arch, "sparc")) {
+ add_tests(sparc_machines);
+ } else if (!strcmp(arch, "sparc64")) {
+ add_tests(sparc64_machines);
+ } else {
+ g_assert_not_reached();
+ }
+
+ return g_test_run();
+}