tests/boot-serial-test.c

   1 /*
   2  * Test serial output of some machines.
   3  *
   4  * Copyright 2016 Thomas Huth, Red Hat Inc.
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2
   7  * or later. See the COPYING file in the top-level directory.
   8  *
   9  * This test is used to check that the serial output of the firmware
  10  * (that we provide for some machines) or some small mini-kernels that
  11  * we provide here contains an expected string. Thus we check that the
  12  * firmware/kernel still boots at least to a certain point and so we
  13  * know that the machine is not completely broken.
  14  */
  15
  16 #include "qemu/osdep.h"
  17 #include "libqtest.h"
  18
  19 typedef struct testdef {
  20     const char *arch;       /* Target architecture */
  21     const char *machine;    /* Name of the machine */
  22     const char *extra;      /* Additional parameters */
  23     const char *expect;     /* Expected string in the serial output */
  24     size_t codesize;        /* Size of the kernel or bios data */
  25     const uint8_t *kernel;  /* Set in case we use our own mini kernel */
  26     const uint8_t *bios;    /* Set in case we use our own mini bios */
  27 } testdef_t;
  28
  29 static testdef_t tests[] = {
  30     { "alpha", "clipper", "", "PCI:" },
  31     { "ppc", "ppce500", "", "U-Boot" },
  32     { "ppc", "prep", "", "Open Hack'Ware BIOS" },
  33     { "ppc64", "ppce500", "", "U-Boot" },
  34     { "ppc64", "prep", "", "Open Hack'Ware BIOS" },
  35     { "ppc64", "pseries", "", "Open Firmware" },
  36     { "ppc64", "powernv", "-cpu POWER8", "SkiBoot" },
  37     { "i386", "isapc", "-cpu qemu32 -device sga", "SGABIOS" },
  38     { "i386", "pc", "-device sga", "SGABIOS" },
  39     { "i386", "q35", "-device sga", "SGABIOS" },
  40     { "x86_64", "isapc", "-cpu qemu32 -device sga", "SGABIOS" },
  41     { "x86_64", "q35", "-device sga", "SGABIOS" },
  42     { "s390x", "s390-ccw-virtio",
  43       "-nodefaults -device sclpconsole,chardev=serial0", "virtio device" },
  44     { NULL }
  45 };
  46
  47 static void check_guest_output(const testdef_t *test, int fd)
  48 {
  49     bool output_ok = false;
  50     int i, nbr, pos = 0, ccnt;
  51     char ch;
  52
  53     /* Poll serial output... Wait at most 60 seconds */
  54     for (i = 0; i < 6000; ++i) {
  55         ccnt = 0;
  56         while ((nbr = read(fd, &ch, 1)) == 1 && ccnt++ < 512) {
  57             if (ch == test->expect[pos]) {
  58                 pos += 1;
  59                 if (test->expect[pos] == '\0') {
  60                     /* We've reached the end of the expected string! */
  61                     output_ok = true;
  62                     goto done;
  63                 }
  64             } else {
  65                 pos = 0;
  66             }
  67         }
  68         g_assert(nbr >= 0);
  69         g_usleep(10000);
  70     }
  71
  72 done:
  73     g_assert(output_ok);
  74 }
  75
  76 static void test_machine(const void *data)
  77 {
  78     const testdef_t *test = data;
  79     char serialtmp[] = "/tmp/qtest-boot-serial-sXXXXXX";
  80     char codetmp[] = "/tmp/qtest-boot-serial-cXXXXXX";
  81     const char *codeparam = "";
  82     const uint8_t *code = NULL;
  83     int ser_fd;
  84
  85     ser_fd = mkstemp(serialtmp);
  86     g_assert(ser_fd != -1);
  87
  88     if (test->kernel) {
  89         code = test->kernel;
  90         codeparam = "-kernel";
  91     } else if (test->bios) {
  92         code = test->bios;
  93         codeparam = "-bios";
  94     }
  95
  96     if (code) {
  97         ssize_t wlen;
  98         int code_fd;
  99
 100         code_fd = mkstemp(codetmp);
 101         g_assert(code_fd != -1);
 102         wlen = write(code_fd, code, test->codesize);
 103         g_assert(wlen == test->codesize);
 104         close(code_fd);
 105     }
 106
 107     /*
 108      * Make sure that this test uses tcg if available: It is used as a
 109      * fast-enough smoketest for that.
 110      */
 111     global_qtest = qtest_startf("%s %s -M %s,accel=tcg:kvm "
 112                                 "-chardev file,id=serial0,path=%s "
 113                                 "-no-shutdown -serial chardev:serial0 %s",
 114                                 codeparam, code ? codetmp : "",
 115                                 test->machine, serialtmp, test->extra);
 116     unlink(serialtmp);
 117     if (code) {
 118         unlink(codetmp);
 119     }
 120
 121     check_guest_output(test, ser_fd);
 122     qtest_quit(global_qtest);
 123
 124     close(ser_fd);
 125 }
 126
 127 int main(int argc, char *argv[])
 128 {
 129     const char *arch = qtest_get_arch();
 130     int i;
 131
 132     g_test_init(&argc, &argv, NULL);
 133
 134     for (i = 0; tests[i].arch != NULL; i++) {
 135         if (strcmp(arch, tests[i].arch) == 0) {
 136             char *name = g_strdup_printf("boot-serial/%s", tests[i].machine);
 137             qtest_add_data_func(name, &tests[i], test_machine);
 138             g_free(name);
 139         }
 140     }
 141
 142     return g_test_run();
 143 }