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xemu/tests/acpi-test.c
Marcel Apfelbaum dac23a6c05 tests/acpi-test: do not fail if iasl is broken 
There is an issue with iasl on big endian machines: It
cannot disassemble acpi tables taken from little endian
machines, so we cannot check the expected tables.

The acpi test will check if the expected aml files
can be disassembled, and will issue an warning not
failing the test on those machines until this
problem is solved by the acpica community.

Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-03-24 12:37:36 +02:00

675 lines
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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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