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qemu/tests/acpi-test.c

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/*
* Boot order test cases.
*
* Copyright (c) 2013 Red Hat Inc.
*
* Authors:
* Michael S. Tsirkin <mst@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.
*/
#include <string.h>
#include <stdio.h>
#include <glib.h>
#include <glib/gstdio.h>
#include "qemu-common.h"
#include "libqtest.h"
#include "qemu/compiler.h"
#include "hw/i386/acpi-defs.h"
#define MACHINE_PC "pc"
#define MACHINE_Q35 "q35"
#define ACPI_REBUILD_EXPECTED_AML "TEST_ACPI_REBUILD_AML"
/* DSDT and SSDTs format */
typedef struct {
AcpiTableHeader header;
gchar *aml; /* aml bytecode from guest */
gsize aml_len;
gchar *aml_file;
gchar *asl; /* asl code generated from aml */
gsize asl_len;
gchar *asl_file;
bool tmp_files_retain; /* do not delete the temp asl/aml */
} QEMU_PACKED AcpiSdtTable;
typedef struct {
const char *machine;
uint32_t rsdp_addr;
AcpiRsdpDescriptor rsdp_table;
AcpiRsdtDescriptorRev1 rsdt_table;
AcpiFadtDescriptorRev1 fadt_table;
AcpiFacsDescriptorRev1 facs_table;
uint32_t *rsdt_tables_addr;
int rsdt_tables_nr;
GArray *tables;
} test_data;
#define LOW(x) ((x) & 0xff)
#define HIGH(x) ((x) >> 8)
#define SIGNATURE 0xdead
#define SIGNATURE_OFFSET 0x10
#define BOOT_SECTOR_ADDRESS 0x7c00
#define ACPI_READ_FIELD(field, addr) \
do { \
switch (sizeof(field)) { \
case 1: \
field = readb(addr); \
break; \
case 2: \
field = readw(addr); \
break; \
case 4: \
field = readl(addr); \
break; \
case 8: \
field = readq(addr); \
break; \
default: \
g_assert(false); \
} \
addr += sizeof(field); \
} while (0);
#define ACPI_READ_ARRAY_PTR(arr, length, addr) \
do { \
int idx; \
for (idx = 0; idx < length; ++idx) { \
ACPI_READ_FIELD(arr[idx], addr); \
} \
} while (0);
#define ACPI_READ_ARRAY(arr, addr) \
ACPI_READ_ARRAY_PTR(arr, sizeof(arr)/sizeof(arr[0]), addr)
#define ACPI_READ_TABLE_HEADER(table, addr) \
do { \
ACPI_READ_FIELD((table)->signature, addr); \
ACPI_READ_FIELD((table)->length, addr); \
ACPI_READ_FIELD((table)->revision, addr); \
ACPI_READ_FIELD((table)->checksum, addr); \
ACPI_READ_ARRAY((table)->oem_id, addr); \
ACPI_READ_ARRAY((table)->oem_table_id, addr); \
ACPI_READ_FIELD((table)->oem_revision, addr); \
ACPI_READ_ARRAY((table)->asl_compiler_id, addr); \
ACPI_READ_FIELD((table)->asl_compiler_revision, addr); \
} while (0);
#define ACPI_ASSERT_CMP(actual, expected) do { \
uint32_t ACPI_ASSERT_CMP_le = cpu_to_le32(actual); \
char ACPI_ASSERT_CMP_str[5] = {}; \
memcpy(ACPI_ASSERT_CMP_str, &ACPI_ASSERT_CMP_le, 4); \
g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
} while (0)
#define ACPI_ASSERT_CMP64(actual, expected) do { \
uint64_t ACPI_ASSERT_CMP_le = cpu_to_le64(actual); \
char ACPI_ASSERT_CMP_str[9] = {}; \
memcpy(ACPI_ASSERT_CMP_str, &ACPI_ASSERT_CMP_le, 8); \
g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
} while (0)
/* Boot sector code: write SIGNATURE into memory,
* then halt.
* Q35 machine requires a minimum 0x7e000 bytes disk.
* (bug or feature?)
*/
static uint8_t boot_sector[0x7e000] = {
/* 7c00: mov $0xdead,%ax */
[0x00] = 0xb8,
[0x01] = LOW(SIGNATURE),
[0x02] = HIGH(SIGNATURE),
/* 7c03: mov %ax,0x7c10 */
[0x03] = 0xa3,
[0x04] = LOW(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET),
[0x05] = HIGH(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET),
/* 7c06: cli */
[0x06] = 0xfa,
/* 7c07: hlt */
[0x07] = 0xf4,
/* 7c08: jmp 0x7c07=0x7c0a-3 */
[0x08] = 0xeb,
[0x09] = LOW(-3),
/* We mov 0xdead here: set value to make debugging easier */
[SIGNATURE_OFFSET] = LOW(0xface),
[SIGNATURE_OFFSET + 1] = HIGH(0xface),
/* End of boot sector marker */
[0x1FE] = 0x55,
[0x1FF] = 0xAA,
};
static const char *disk = "tests/acpi-test-disk.raw";
static const char *data_dir = "tests/acpi-test-data";
#ifdef CONFIG_IASL
static const char *iasl = stringify(CONFIG_IASL);
#else
static const char *iasl;
#endif
static void free_test_data(test_data *data)
{
AcpiSdtTable *temp;
int i;
if (data->rsdt_tables_addr) {
g_free(data->rsdt_tables_addr);
}
for (i = 0; i < data->tables->len; ++i) {
temp = &g_array_index(data->tables, AcpiSdtTable, i);
if (temp->aml) {
g_free(temp->aml);
}
if (temp->aml_file) {
if (!temp->tmp_files_retain &&
g_strstr_len(temp->aml_file, -1, "aml-")) {
unlink(temp->aml_file);
}
g_free(temp->aml_file);
}
if (temp->asl) {
g_free(temp->asl);
}
if (temp->asl_file) {
if (!temp->tmp_files_retain) {
unlink(temp->asl_file);
}
g_free(temp->asl_file);
}
}
g_array_free(data->tables, false);
}
static uint8_t acpi_checksum(const uint8_t *data, int len)
{
int i;
uint8_t sum = 0;
for (i = 0; i < len; i++) {
sum += data[i];
}
return sum;
}
static void test_acpi_rsdp_address(test_data *data)
{
uint32_t off;
/* OK, now find RSDP */
for (off = 0xf0000; off < 0x100000; off += 0x10) {
uint8_t sig[] = "RSD PTR ";
int i;
for (i = 0; i < sizeof sig - 1; ++i) {
sig[i] = readb(off + i);
}
if (!memcmp(sig, "RSD PTR ", sizeof sig)) {
break;
}
}
g_assert_cmphex(off, <, 0x100000);
data->rsdp_addr = off;
}
static void test_acpi_rsdp_table(test_data *data)
{
AcpiRsdpDescriptor *rsdp_table = &data->rsdp_table;
uint32_t addr = data->rsdp_addr;
ACPI_READ_FIELD(rsdp_table->signature, addr);
ACPI_ASSERT_CMP64(rsdp_table->signature, "RSD PTR ");
ACPI_READ_FIELD(rsdp_table->checksum, addr);
ACPI_READ_ARRAY(rsdp_table->oem_id, addr);
ACPI_READ_FIELD(rsdp_table->revision, addr);
ACPI_READ_FIELD(rsdp_table->rsdt_physical_address, addr);
ACPI_READ_FIELD(rsdp_table->length, addr);
/* rsdp checksum is not for the whole table, but for the first 20 bytes */
g_assert(!acpi_checksum((uint8_t *)rsdp_table, 20));
}
static void test_acpi_rsdt_table(test_data *data)
{
AcpiRsdtDescriptorRev1 *rsdt_table = &data->rsdt_table;
uint32_t addr = data->rsdp_table.rsdt_physical_address;
uint32_t *tables;
int tables_nr;
uint8_t checksum;
/* read the header */
ACPI_READ_TABLE_HEADER(rsdt_table, addr);
ACPI_ASSERT_CMP(rsdt_table->signature, "RSDT");
/* compute the table entries in rsdt */
tables_nr = (rsdt_table->length - sizeof(AcpiRsdtDescriptorRev1)) /
sizeof(uint32_t);
g_assert_cmpint(tables_nr, >, 0);
/* get the addresses of the tables pointed by rsdt */
tables = g_new0(uint32_t, tables_nr);
ACPI_READ_ARRAY_PTR(tables, tables_nr, addr);
checksum = acpi_checksum((uint8_t *)rsdt_table, rsdt_table->length) +
acpi_checksum((uint8_t *)tables, tables_nr * sizeof(uint32_t));
g_assert(!checksum);
/* SSDT tables after FADT */
data->rsdt_tables_addr = tables;
data->rsdt_tables_nr = tables_nr;
}
static void test_acpi_fadt_table(test_data *data)
{
AcpiFadtDescriptorRev1 *fadt_table = &data->fadt_table;
uint32_t addr;
/* FADT table comes first */
addr = data->rsdt_tables_addr[0];
ACPI_READ_TABLE_HEADER(fadt_table, addr);
ACPI_READ_FIELD(fadt_table->firmware_ctrl, addr);
ACPI_READ_FIELD(fadt_table->dsdt, addr);
ACPI_READ_FIELD(fadt_table->model, addr);
ACPI_READ_FIELD(fadt_table->reserved1, addr);
ACPI_READ_FIELD(fadt_table->sci_int, addr);
ACPI_READ_FIELD(fadt_table->smi_cmd, addr);
ACPI_READ_FIELD(fadt_table->acpi_enable, addr);
ACPI_READ_FIELD(fadt_table->acpi_disable, addr);
ACPI_READ_FIELD(fadt_table->S4bios_req, addr);
ACPI_READ_FIELD(fadt_table->reserved2, addr);
ACPI_READ_FIELD(fadt_table->pm1a_evt_blk, addr);
ACPI_READ_FIELD(fadt_table->pm1b_evt_blk, addr);
ACPI_READ_FIELD(fadt_table->pm1a_cnt_blk, addr);
ACPI_READ_FIELD(fadt_table->pm1b_cnt_blk, addr);
ACPI_READ_FIELD(fadt_table->pm2_cnt_blk, addr);
ACPI_READ_FIELD(fadt_table->pm_tmr_blk, addr);
ACPI_READ_FIELD(fadt_table->gpe0_blk, addr);
ACPI_READ_FIELD(fadt_table->gpe1_blk, addr);
ACPI_READ_FIELD(fadt_table->pm1_evt_len, addr);
ACPI_READ_FIELD(fadt_table->pm1_cnt_len, addr);
ACPI_READ_FIELD(fadt_table->pm2_cnt_len, addr);
ACPI_READ_FIELD(fadt_table->pm_tmr_len, addr);
ACPI_READ_FIELD(fadt_table->gpe0_blk_len, addr);
ACPI_READ_FIELD(fadt_table->gpe1_blk_len, addr);
ACPI_READ_FIELD(fadt_table->gpe1_base, addr);
ACPI_READ_FIELD(fadt_table->reserved3, addr);
ACPI_READ_FIELD(fadt_table->plvl2_lat, addr);
ACPI_READ_FIELD(fadt_table->plvl3_lat, addr);
ACPI_READ_FIELD(fadt_table->flush_size, addr);
ACPI_READ_FIELD(fadt_table->flush_stride, addr);
ACPI_READ_FIELD(fadt_table->duty_offset, addr);
ACPI_READ_FIELD(fadt_table->duty_width, addr);
ACPI_READ_FIELD(fadt_table->day_alrm, addr);
ACPI_READ_FIELD(fadt_table->mon_alrm, addr);
ACPI_READ_FIELD(fadt_table->century, addr);
ACPI_READ_FIELD(fadt_table->reserved4, addr);
ACPI_READ_FIELD(fadt_table->reserved4a, addr);
ACPI_READ_FIELD(fadt_table->reserved4b, addr);
ACPI_READ_FIELD(fadt_table->flags, addr);
ACPI_ASSERT_CMP(fadt_table->signature, "FACP");
g_assert(!acpi_checksum((uint8_t *)fadt_table, fadt_table->length));
}
static void test_acpi_facs_table(test_data *data)
{
AcpiFacsDescriptorRev1 *facs_table = &data->facs_table;
uint32_t addr = data->fadt_table.firmware_ctrl;
ACPI_READ_FIELD(facs_table->signature, addr);
ACPI_READ_FIELD(facs_table->length, addr);
ACPI_READ_FIELD(facs_table->hardware_signature, addr);
ACPI_READ_FIELD(facs_table->firmware_waking_vector, addr);
ACPI_READ_FIELD(facs_table->global_lock, addr);
ACPI_READ_FIELD(facs_table->flags, addr);
ACPI_READ_ARRAY(facs_table->resverved3, addr);
ACPI_ASSERT_CMP(facs_table->signature, "FACS");
}
static void test_dst_table(AcpiSdtTable *sdt_table, uint32_t addr)
{
uint8_t checksum;
ACPI_READ_TABLE_HEADER(&sdt_table->header, addr);
sdt_table->aml_len = sdt_table->header.length - sizeof(AcpiTableHeader);
sdt_table->aml = g_malloc0(sdt_table->aml_len);
ACPI_READ_ARRAY_PTR(sdt_table->aml, sdt_table->aml_len, addr);
checksum = acpi_checksum((uint8_t *)sdt_table, sizeof(AcpiTableHeader)) +
acpi_checksum((uint8_t *)sdt_table->aml, sdt_table->aml_len);
g_assert(!checksum);
}
static void test_acpi_dsdt_table(test_data *data)
{
AcpiSdtTable dsdt_table;
uint32_t addr = data->fadt_table.dsdt;
memset(&dsdt_table, 0, sizeof(dsdt_table));
data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
test_dst_table(&dsdt_table, addr);
ACPI_ASSERT_CMP(dsdt_table.header.signature, "DSDT");
/* Place DSDT first */
g_array_append_val(data->tables, dsdt_table);
}
static void test_acpi_tables(test_data *data)
{
int tables_nr = data->rsdt_tables_nr - 1; /* fadt is first */
int i;
for (i = 0; i < tables_nr; i++) {
AcpiSdtTable ssdt_table;
memset(&ssdt_table, 0 , sizeof(ssdt_table));
uint32_t addr = data->rsdt_tables_addr[i + 1]; /* fadt is first */
test_dst_table(&ssdt_table, addr);
g_array_append_val(data->tables, ssdt_table);
}
}
static void dump_aml_files(test_data *data, bool rebuild)
{
AcpiSdtTable *sdt;
GError *error = NULL;
gchar *aml_file = NULL;
gint fd;
ssize_t ret;
int i;
for (i = 0; i < data->tables->len; ++i) {
sdt = &g_array_index(data->tables, AcpiSdtTable, i);
g_assert(sdt->aml);
if (rebuild) {
uint32_t signature = cpu_to_le32(sdt->header.signature);
aml_file = g_strdup_printf("%s/%s/%.4s", data_dir, data->machine,
(gchar *)&signature);
fd = g_open(aml_file, O_WRONLY|O_TRUNC|O_CREAT,
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH);
} else {
fd = g_file_open_tmp("aml-XXXXXX", &sdt->aml_file, &error);
g_assert_no_error(error);
}
g_assert(fd >= 0);
ret = qemu_write_full(fd, sdt, sizeof(AcpiTableHeader));
g_assert(ret == sizeof(AcpiTableHeader));
ret = qemu_write_full(fd, sdt->aml, sdt->aml_len);
g_assert(ret == sdt->aml_len);
close(fd);
if (aml_file) {
g_free(aml_file);
}
}
}
static bool compare_signature(AcpiSdtTable *sdt, const char *signature)
{
return !memcmp(&sdt->header.signature, signature, 4);
}
static bool load_asl(GArray *sdts, AcpiSdtTable *sdt)
{
AcpiSdtTable *temp;
GError *error = NULL;
GString *command_line = g_string_new(iasl);
gint fd;
gchar *out, *out_err;
gboolean ret;
int i;
fd = g_file_open_tmp("asl-XXXXXX.dsl", &sdt->asl_file, &error);
g_assert_no_error(error);
close(fd);
/* build command line */
g_string_append_printf(command_line, " -p %s ", sdt->asl_file);
if (compare_signature(sdt, "DSDT") ||
compare_signature(sdt, "SSDT")) {
for (i = 0; i < sdts->len; ++i) {
temp = &g_array_index(sdts, AcpiSdtTable, i);
if (compare_signature(temp, "DSDT") ||
compare_signature(temp, "SSDT")) {
g_string_append_printf(command_line, "-e %s ", temp->aml_file);
}
}
}
g_string_append_printf(command_line, "-d %s", sdt->aml_file);
/* pass 'out' and 'out_err' in order to be redirected */
ret = g_spawn_command_line_sync(command_line->str, &out, &out_err, NULL, &error);
g_assert_no_error(error);
if (ret) {
ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
&sdt->asl_len, &error);
g_assert(ret);
g_assert_no_error(error);
ret = (sdt->asl_len > 0);
}
g_free(out);
g_free(out_err);
g_string_free(command_line, true);
return !ret;
}
#define COMMENT_END "*/"
#define DEF_BLOCK "DefinitionBlock ("
#define BLOCK_NAME_END ".aml"
static GString *normalize_asl(gchar *asl_code)
{
GString *asl = g_string_new(asl_code);
gchar *comment, *block_name;
/* strip comments (different generation days) */
comment = g_strstr_len(asl->str, asl->len, COMMENT_END);
if (comment) {
asl = g_string_erase(asl, 0, comment + sizeof(COMMENT_END) - asl->str);
}
/* strip def block name (it has file path in it) */
if (g_str_has_prefix(asl->str, DEF_BLOCK)) {
block_name = g_strstr_len(asl->str, asl->len, BLOCK_NAME_END);
g_assert(block_name);
asl = g_string_erase(asl, 0,
block_name + sizeof(BLOCK_NAME_END) - asl->str);
}
return asl;
}
static GArray *load_expected_aml(test_data *data)
{
int i;
AcpiSdtTable *sdt;
gchar *aml_file;
GError *error = NULL;
gboolean ret;
GArray *exp_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
for (i = 0; i < data->tables->len; ++i) {
AcpiSdtTable exp_sdt;
uint32_t signature;
sdt = &g_array_index(data->tables, AcpiSdtTable, i);
memset(&exp_sdt, 0, sizeof(exp_sdt));
exp_sdt.header.signature = sdt->header.signature;
signature = cpu_to_le32(sdt->header.signature);
aml_file = g_strdup_printf("%s/%s/%.4s", data_dir, data->machine,
(gchar *)&signature);
exp_sdt.aml_file = aml_file;
g_assert(g_file_test(aml_file, G_FILE_TEST_EXISTS));
ret = g_file_get_contents(aml_file, &exp_sdt.aml,
&exp_sdt.aml_len, &error);
g_assert(ret);
g_assert_no_error(error);
g_assert(exp_sdt.aml);
g_assert(exp_sdt.aml_len);
g_array_append_val(exp_tables, exp_sdt);
}
return exp_tables;
}
static void test_acpi_asl(test_data *data)
{
int i;
AcpiSdtTable *sdt, *exp_sdt;
test_data exp_data;
gboolean exp_err, err;
memset(&exp_data, 0, sizeof(exp_data));
exp_data.tables = load_expected_aml(data);
dump_aml_files(data, false);
for (i = 0; i < data->tables->len; ++i) {
GString *asl, *exp_asl;
sdt = &g_array_index(data->tables, AcpiSdtTable, i);
exp_sdt = &g_array_index(exp_data.tables, AcpiSdtTable, i);
err = load_asl(data->tables, sdt);
asl = normalize_asl(sdt->asl);
exp_err = load_asl(exp_data.tables, exp_sdt);
exp_asl = normalize_asl(exp_sdt->asl);
/* TODO: check for warnings */
g_assert(!err || exp_err);
if (g_strcmp0(asl->str, exp_asl->str)) {
if (exp_err) {
fprintf(stderr,
"Warning! iasl couldn't parse the expected aml\n");
} else {
uint32_t signature = cpu_to_le32(exp_sdt->header.signature);
sdt->tmp_files_retain = true;
exp_sdt->tmp_files_retain = true;
fprintf(stderr,
"acpi-test: Warning! %.4s mismatch. "
"Actual [asl:%s, aml:%s], Expected [asl:%s, aml:%s].\n",
(gchar *)&signature,
sdt->asl_file, sdt->aml_file,
exp_sdt->asl_file, exp_sdt->aml_file);
}
}
g_string_free(asl, true);
g_string_free(exp_asl, true);
}
free_test_data(&exp_data);
}
static void test_acpi_one(const char *params, test_data *data)
{
char *args;
uint8_t signature_low;
uint8_t signature_high;
uint16_t signature;
int i;
const char *device = "";
if (!g_strcmp0(data->machine, MACHINE_Q35)) {
device = ",id=hd -device ide-hd,drive=hd";
}
args = g_strdup_printf("-net none -display none %s -drive file=%s%s,",
params ? params : "", disk, device);
qtest_start(args);
/* Wait at most 1 minute */
#define TEST_DELAY (1 * G_USEC_PER_SEC / 10)
#define TEST_CYCLES MAX((60 * G_USEC_PER_SEC / TEST_DELAY), 1)
/* Poll until code has run and modified memory. Once it has we know BIOS
* initialization is done. TODO: check that IP reached the halt
* instruction.
*/
for (i = 0; i < TEST_CYCLES; ++i) {
signature_low = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET);
signature_high = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET + 1);
signature = (signature_high << 8) | signature_low;
if (signature == SIGNATURE) {
break;
}
g_usleep(TEST_DELAY);
}
g_assert_cmphex(signature, ==, SIGNATURE);
test_acpi_rsdp_address(data);
test_acpi_rsdp_table(data);
test_acpi_rsdt_table(data);
test_acpi_fadt_table(data);
test_acpi_facs_table(data);
test_acpi_dsdt_table(data);
test_acpi_tables(data);
if (iasl) {
if (getenv(ACPI_REBUILD_EXPECTED_AML)) {
dump_aml_files(data, true);
} else {
test_acpi_asl(data);
}
}
qtest_quit(global_qtest);
g_free(args);
}
static void test_acpi_tcg(void)
{
test_data data;
/* Supplying -machine accel argument overrides the default (qtest).
* This is to make guest actually run.
*/
memset(&data, 0, sizeof(data));
data.machine = MACHINE_PC;
test_acpi_one("-machine accel=tcg", &data);
free_test_data(&data);
memset(&data, 0, sizeof(data));
data.machine = MACHINE_Q35;
test_acpi_one("-machine q35,accel=tcg", &data);
free_test_data(&data);
}
int main(int argc, char *argv[])
{
const char *arch = qtest_get_arch();
FILE *f = fopen(disk, "w");
int ret;
fwrite(boot_sector, 1, sizeof boot_sector, f);
fclose(f);
g_test_init(&argc, &argv, NULL);
if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
qtest_add_func("acpi/tcg", test_acpi_tcg);
}
ret = g_test_run();
unlink(disk);
return ret;
}
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