tests/prom-env-test.c

   1 /*
   2  * Test OpenBIOS-based machines.
   3  *
   4  * Copyright (c) 2016 Red Hat Inc.
   5  *
   6  * Author:
   7  *    Thomas Huth <thuth@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2
  10  * or later. See the COPYING file in the top-level directory.
  11  *
  12  * This test is used to check that some OpenBIOS machines can be started
  13  * successfully in TCG mode. To do this, we first put some Forth code into
  14  * the "boot-command" Open Firmware environment variable. This Forth code
  15  * writes a well-known magic value to a known location in memory. Then we
  16  * start the guest so that OpenBIOS can boot and finally run the Forth code.
  17  * The testing code here then can finally check whether the value has been
  18  * successfully written into the guest memory.
  19  */
  20
  21 #include "qemu/osdep.h"
  22 #include "libqtest.h"
  23
  24 #define MAGIC   0xcafec0de
  25 #define ADDRESS 0x4000
  26
  27 static void check_guest_memory(void)
  28 {
  29     uint32_t signature;
  30     int i;
  31
  32     /* Poll until code has run and modified memory. Wait at most 30 seconds */
  33     for (i = 0; i < 10000; ++i) {
  34         signature = readl(ADDRESS);
  35         if (signature == MAGIC) {
  36             break;
  37         }
  38         g_usleep(10000);
  39     }
  40
  41     g_assert_cmphex(signature, ==, MAGIC);
  42 }
  43
  44 static void test_machine(const void *machine)
  45 {
  46     char *args;
  47
  48     args = g_strdup_printf("-M %s,accel=tcg -prom-env 'boot-command=%x %x l!'",
  49                            (const char *)machine, MAGIC, ADDRESS);
  50
  51     qtest_start(args);
  52     check_guest_memory();
  53     qtest_quit(global_qtest);
  54
  55     g_free(args);
  56 }
  57
  58 static void add_tests(const char *machines[])
  59 {
  60     int i;
  61     char *name;
  62
  63     for (i = 0; machines[i] != NULL; i++) {
  64         name = g_strdup_printf("prom-env/%s", machines[i]);
  65         qtest_add_data_func(name, machines[i], test_machine);
  66         g_free(name);
  67     }
  68 }
  69
  70 int main(int argc, char *argv[])
  71 {
  72     const char *sparc_machines[] = { "SPARCbook", "Voyager", "SS-20", NULL };
  73     const char *sparc64_machines[] = { "sun4u", "sun4v", NULL };
  74     const char *mac_machines[] = { "mac99", "g3beige", NULL };
  75     const char *arch = qtest_get_arch();
  76
  77     g_test_init(&argc, &argv, NULL);
  78
  79     if (!strcmp(arch, "ppc") || !strcmp(arch, "ppc64")) {
  80         add_tests(mac_machines);
  81     } else if (!strcmp(arch, "sparc")) {
  82         add_tests(sparc_machines);
  83     } else if (!strcmp(arch, "sparc64")) {
  84         add_tests(sparc64_machines);
  85     } else {
  86         g_assert_not_reached();
  87     }
  88
  89     return g_test_run();
  90 }