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 static const uint8_t kernel_mcf5208[] = {
  20     0x41, 0xf9, 0xfc, 0x06, 0x00, 0x00,     /* lea 0xfc060000,%a0 */
  21     0x10, 0x3c, 0x00, 0x54,                 /* move.b #'T',%d0 */
  22     0x11, 0x7c, 0x00, 0x04, 0x00, 0x08,     /* move.b #4,8(%a0)     Enable TX */
  23     0x11, 0x40, 0x00, 0x0c,                 /* move.b %d0,12(%a0)   Print 'T' */
  24     0x60, 0xfa                              /* bra.s  loop */
  25 };
  26
  27 typedef struct testdef {
  28     const char *arch;       /* Target architecture */
  29     const char *machine;    /* Name of the machine */
  30     const char *extra;      /* Additional parameters */
  31     const char *expect;     /* Expected string in the serial output */
  32     size_t codesize;        /* Size of the kernel or bios data */
  33     const uint8_t *kernel;  /* Set in case we use our own mini kernel */
  34     const uint8_t *bios;    /* Set in case we use our own mini bios */
  35 } testdef_t;
  36
  37 static testdef_t tests[] = {
  38     { "alpha", "clipper", "", "PCI:" },
  39     { "ppc", "ppce500", "", "U-Boot" },
  40     { "ppc", "prep", "", "Open Hack'Ware BIOS" },
  41     { "ppc64", "ppce500", "", "U-Boot" },
  42     { "ppc64", "prep", "", "Open Hack'Ware BIOS" },
  43     { "ppc64", "pseries", "", "Open Firmware" },
  44     { "ppc64", "powernv", "-cpu POWER8", "SkiBoot" },
  45     { "i386", "isapc", "-cpu qemu32 -device sga", "SGABIOS" },
  46     { "i386", "pc", "-device sga", "SGABIOS" },
  47     { "i386", "q35", "-device sga", "SGABIOS" },
  48     { "x86_64", "isapc", "-cpu qemu32 -device sga", "SGABIOS" },
  49     { "x86_64", "q35", "-device sga", "SGABIOS" },
  50     { "s390x", "s390-ccw-virtio",
  51       "-nodefaults -device sclpconsole,chardev=serial0", "virtio device" },
  52     { "m68k", "mcf5208evb", "", "TT", sizeof(kernel_mcf5208), kernel_mcf5208 },
  53
  54     { NULL }
  55 };
  56
  57 static void check_guest_output(const testdef_t *test, int fd)
  58 {
  59     bool output_ok = false;
  60     int i, nbr, pos = 0, ccnt;
  61     char ch;
  62
  63     /* Poll serial output... Wait at most 60 seconds */
  64     for (i = 0; i < 6000; ++i) {
  65         ccnt = 0;
  66         while ((nbr = read(fd, &ch, 1)) == 1 && ccnt++ < 512) {
  67             if (ch == test->expect[pos]) {
  68                 pos += 1;
  69                 if (test->expect[pos] == '\0') {
  70                     /* We've reached the end of the expected string! */
  71                     output_ok = true;
  72                     goto done;
  73                 }
  74             } else {
  75                 pos = 0;
  76             }
  77         }
  78         g_assert(nbr >= 0);
  79         g_usleep(10000);
  80     }
  81
  82 done:
  83     g_assert(output_ok);
  84 }
  85
  86 static void test_machine(const void *data)
  87 {
  88     const testdef_t *test = data;
  89     char serialtmp[] = "/tmp/qtest-boot-serial-sXXXXXX";
  90     char codetmp[] = "/tmp/qtest-boot-serial-cXXXXXX";
  91     const char *codeparam = "";
  92     const uint8_t *code = NULL;
  93     int ser_fd;
  94
  95     ser_fd = mkstemp(serialtmp);
  96     g_assert(ser_fd != -1);
  97
  98     if (test->kernel) {
  99         code = test->kernel;
 100         codeparam = "-kernel";
 101     } else if (test->bios) {
 102         code = test->bios;
 103         codeparam = "-bios";
 104     }
 105
 106     if (code) {
 107         ssize_t wlen;
 108         int code_fd;
 109
 110         code_fd = mkstemp(codetmp);
 111         g_assert(code_fd != -1);
 112         wlen = write(code_fd, code, test->codesize);
 113         g_assert(wlen == test->codesize);
 114         close(code_fd);
 115     }
 116
 117     /*
 118      * Make sure that this test uses tcg if available: It is used as a
 119      * fast-enough smoketest for that.
 120      */
 121     global_qtest = qtest_startf("%s %s -M %s,accel=tcg:kvm "
 122                                 "-chardev file,id=serial0,path=%s "
 123                                 "-no-shutdown -serial chardev:serial0 %s",
 124                                 codeparam, code ? codetmp : "",
 125                                 test->machine, serialtmp, test->extra);
 126     unlink(serialtmp);
 127     if (code) {
 128         unlink(codetmp);
 129     }
 130
 131     check_guest_output(test, ser_fd);
 132     qtest_quit(global_qtest);
 133
 134     close(ser_fd);
 135 }
 136
 137 int main(int argc, char *argv[])
 138 {
 139     const char *arch = qtest_get_arch();
 140     int i;
 141
 142     g_test_init(&argc, &argv, NULL);
 143
 144     for (i = 0; tests[i].arch != NULL; i++) {
 145         if (strcmp(arch, tests[i].arch) == 0) {
 146             char *name = g_strdup_printf("boot-serial/%s", tests[i].machine);
 147             qtest_add_data_func(name, &tests[i], test_machine);
 148             g_free(name);
 149         }
 150     }
 151
 152     return g_test_run();
 153 }