| 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 "ppc-util.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 | } |