tests: Check serial output of firmware boot of some machines

Some of the machines that we have got a firmware image for write
some output to the serial console while booting up. We can use
this output to make sure that the machine is basically working,
so this adds a test that checks the output of these machines
for some well-known "magic" strings.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 110 insertions, 0 deletions

diff --git a/tests/boot-serial-test.c b/tests/boot-serial-test.c
new file mode 100644
index 0000000..d98c564
--- /dev/null
+++ b/tests/boot-serial-test.c
@@ -0,0 +1,110 @@
+/*
+ * Test serial output of some machines.
+ *
+ * Copyright 2016 Thomas Huth, Red Hat Inc.
+ *
+ * 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 the serial output of the firmware
+ * (that we provide for some machines) contains an expected string.
+ * Thus we check that the firmware still boots at least to a certain
+ * point and so we know that the machine is not completely broken.
+ */
+
+#include "qemu/osdep.h"
+#include "libqtest.h"
+
+typedef struct testdef {
+    const char *arch;       /* Target architecture */
+    const char *machine;    /* Name of the machine */
+    const char *extra;      /* Additional parameters */
+    const char *expect;     /* Expected string in the serial output */
+} testdef_t;
+
+static testdef_t tests[] = {
+    { "alpha", "clipper", "", "PCI:" },
+    { "ppc", "ppce500", "", "U-Boot" },
+    { "ppc", "prep", "", "Open Hack'Ware BIOS" },
+    { "ppc64", "ppce500", "", "U-Boot" },
+    { "ppc64", "prep", "", "Open Hack'Ware BIOS" },
+    { "ppc64", "pseries", "", "Open Firmware" },
+    { "i386", "isapc", "-cpu qemu32 -device sga", "SGABIOS" },
+    { "i386", "pc", "-device sga", "SGABIOS" },
+    { "i386", "q35", "-device sga", "SGABIOS" },
+    { "x86_64", "isapc", "-cpu qemu32 -device sga", "SGABIOS" },
+    { "x86_64", "q35", "-device sga", "SGABIOS" },
+    { "s390x", "s390-ccw-virtio",
+      "-nodefaults -device sclpconsole,chardev=serial0", "virtio device" },
+    { NULL }
+};
+
+static void check_guest_output(const testdef_t *test, int fd)
+{
+    bool output_ok = false;
+    int i, nbr, pos = 0;
+    char ch;
+
+    /* Poll serial output... Wait at most 60 seconds */
+    for (i = 0; i < 6000; ++i) {
+        while ((nbr = read(fd, &ch, 1)) == 1) {
+            if (ch == test->expect[pos]) {
+                pos += 1;
+                if (test->expect[pos] == '\0') {
+                    /* We've reached the end of the expected string! */
+                    output_ok = true;
+                    goto done;
+                }
+            } else {
+                pos = 0;
+            }
+        }
+        g_assert(nbr >= 0);
+        g_usleep(10000);
+    }
+
+done:
+    g_assert(output_ok);
+}
+
+static void test_machine(const void *data)
+{
+    const testdef_t *test = data;
+    char *args;
+    char tmpname[] = "/tmp/qtest-boot-serial-XXXXXX";
+    int fd;
+
+    fd = mkstemp(tmpname);
+    g_assert(fd != -1);
+
+    args = g_strdup_printf("-M %s,accel=tcg -chardev file,id=serial0,path=%s"
+                           " -serial chardev:serial0 %s", test->machine,
+                           tmpname, test->extra);
+
+    qtest_start(args);
+    unlink(tmpname);
+
+    check_guest_output(test, fd);
+    qtest_quit(global_qtest);
+
+    g_free(args);
+    close(fd);
+}
+
+int main(int argc, char *argv[])
+{
+    const char *arch = qtest_get_arch();
+    int i;
+
+    g_test_init(&argc, &argv, NULL);
+
+    for (i = 0; tests[i].arch != NULL; i++) {
+        if (strcmp(arch, tests[i].arch) == 0) {
+            char *name = g_strdup_printf("boot-serial/%s", tests[i].machine);
+            qtest_add_data_func(name, &tests[i], test_machine);
+            g_free(name);
+        }
+    }
+
+    return g_test_run();
+}