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/*
* Test Open-Firmware-based machines.
*
* Copyright (c) 2016, 2017 Red Hat Inc.
*
* Author:
* Thomas Huth <thuth@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2
* or later. See the COPYING file in the top-level directory.
*
* This test is used to check that some Open Firmware based machines (i.e.
* OpenBIOS or SLOF) can be started successfully in TCG mode. To do this, we
* first put some Forth code into the "boot-command" Open Firmware environment
* variable. This Forth code writes a well-known magic value to a known location
* in memory. Then we start the guest so that the firmware can boot and finally
* run the Forth code.
* The testing code here then can finally check whether the value has been
* successfully written into the guest memory.
*/
#include "qemu/osdep.h"
#include "libqtest.h"
#define MAGIC 0xcafec0de
#define ADDRESS 0x4000
static void check_guest_memory(QTestState *qts)
{
uint32_t signature;
int i;
/* Poll until code has run and modified memory. Wait at most 600 seconds */
for (i = 0; i < 60000; ++i) {
signature = qtest_readl(qts, ADDRESS);
if (signature == MAGIC) {
break;
}
g_usleep(10000);
}
g_assert_cmphex(signature, ==, MAGIC);
}
static void test_machine(const void *machine)
{
const char *extra_args = "";
QTestState *qts;
/*
* The pseries firmware boots much faster without the default
* devices, it also needs Spectre/Meltdown workarounds disabled to
* avoid warnings with TCG
*/
if (strcmp(machine, "pseries") == 0) {
extra_args = "-nodefaults"
" -machine cap-cfpc=broken,cap-sbbc=broken,cap-ibs=broken";
}
qts = qtest_initf("-M %s -accel tcg %s -prom-env 'use-nvramrc?=true' "
"-prom-env 'nvramrc=%x %x l!' ", (const char *)machine,
extra_args, MAGIC, ADDRESS);
check_guest_memory(qts);
qtest_quit(qts);
}
static void add_tests(const char *machines[])
{
int i;
char *name;
for (i = 0; machines[i] != NULL; i++) {
name = g_strdup_printf("prom-env/%s", machines[i]);
qtest_add_data_func(name, machines[i], test_machine);
g_free(name);
}
}
int main(int argc, char *argv[])
{
const char *sparc_machines[] = { "SPARCbook", "Voyager", "SS-20", NULL };
const char *sparc64_machines[] = { "sun4u", NULL };
const char *ppc_machines[] = { "mac99", "g3beige", NULL };
const char *arch = qtest_get_arch();
g_test_init(&argc, &argv, NULL);
if (!strcmp(arch, "ppc")) {
add_tests(ppc_machines);
} else if (!strcmp(arch, "ppc64")) {
add_tests(ppc_machines);
if (g_test_slow()) {
qtest_add_data_func("prom-env/pseries", "pseries", test_machine);
}
} else if (!strcmp(arch, "sparc")) {
add_tests(sparc_machines);
} else if (!strcmp(arch, "sparc64")) {
add_tests(sparc64_machines);
} else {
g_assert_not_reached();
}
return g_test_run();
}
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