qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
Log | Files | Refs | Submodules | LICENSE

prom-env-test.c (3163B)

      1 /*
      2  * Test Open-Firmware-based machines.
      3  *
      4  * Copyright (c) 2016, 2017 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 Open Firmware based machines (i.e.
     13  * OpenBIOS or SLOF) can be started successfully in TCG mode. To do this, we
     14  * first put some Forth code into the "boot-command" Open Firmware environment
     15  * variable. This Forth code writes a well-known magic value to a known location
     16  * in memory. Then we start the guest so that the firmware can boot and finally
     17  * run the Forth code.
     18  * The testing code here then can finally check whether the value has been
     19  * successfully written into the guest memory.
     20  */
     21 
     22 #include "qemu/osdep.h"
     23 #include "libqtest.h"
     24 #include "libqos/libqos-spapr.h"
     25 
     26 #define MAGIC   0xcafec0de
     27 #define ADDRESS 0x4000
     28 
     29 static void check_guest_memory(QTestState *qts)
     30 {
     31     uint32_t signature;
     32     int i;
     33 
     34     /* Poll until code has run and modified memory. Wait at most 600 seconds */
     35     for (i = 0; i < 60000; ++i) {
     36         signature = qtest_readl(qts, ADDRESS);
     37         if (signature == MAGIC) {
     38             break;
     39         }
     40         g_usleep(10000);
     41     }
     42 
     43     g_assert_cmphex(signature, ==, MAGIC);
     44 }
     45 
     46 static void test_machine(const void *machine)
     47 {
     48     const char *extra_args = "";
     49     QTestState *qts;
     50 
     51     /*
     52      * The pseries firmware boots much faster without the default
     53      * devices, it also needs Spectre/Meltdown workarounds disabled to
     54      * avoid warnings with TCG
     55      */
     56     if (strcmp(machine, "pseries") == 0) {
     57         extra_args = "-nodefaults"
     58             " -machine " PSERIES_DEFAULT_CAPABILITIES;
     59     }
     60 
     61     qts = qtest_initf("-M %s -accel tcg %s -prom-env \"use-nvramrc?=true\" "
     62                       "-prom-env \"nvramrc=%x %x l!\" ", (const char *)machine,
     63                       extra_args, MAGIC, ADDRESS);
     64     check_guest_memory(qts);
     65     qtest_quit(qts);
     66 }
     67 
     68 static void add_tests(const char *machines[])
     69 {
     70     int i;
     71     char *name;
     72 
     73     for (i = 0; machines[i] != NULL; i++) {
     74         if (qtest_has_machine(machines[i])) {
     75             name = g_strdup_printf("prom-env/%s", machines[i]);
     76             qtest_add_data_func(name, machines[i], test_machine);
     77             g_free(name);
     78         }
     79     }
     80 }
     81 
     82 int main(int argc, char *argv[])
     83 {
     84     const char *sparc_machines[] = { "SPARCbook", "Voyager", "SS-20", NULL };
     85     const char *sparc64_machines[] = { "sun4u", NULL };
     86     const char *ppc_machines[] = { "mac99", "g3beige", NULL };
     87     const char *arch = qtest_get_arch();
     88 
     89     g_test_init(&argc, &argv, NULL);
     90 
     91     if (!strcmp(arch, "ppc")) {
     92         add_tests(ppc_machines);
     93     } else if (!strcmp(arch, "ppc64")) {
     94         add_tests(ppc_machines);
     95         if (g_test_slow()) {
     96             qtest_add_data_func("prom-env/pseries", "pseries", test_machine);
     97         }
     98     } else if (!strcmp(arch, "sparc")) {
     99         add_tests(sparc_machines);
    100     } else if (!strcmp(arch, "sparc64")) {
    101         add_tests(sparc64_machines);
    102     } else {
    103         g_assert_not_reached();
    104     }
    105 
    106     return g_test_run();
    107 }