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tests: add smbios testing

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Add tests to find and verify the smbios entry point structure,
and to walk and perform checks on the actual smbios tables.

Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gabriel L. Somlo 2014-05-27 15:03:15 -04:00 committed by Michael S. Tsirkin
parent 501f28ca9d
commit eb386aaccc
1 changed files with 126 additions and 0 deletions
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126
tests/bios-tables-test.c
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@ -18,6 +18,8 @@
#include "libqtest.h"
#include "qemu/compiler.h"
#include "hw/i386/acpi-defs.h"
#include "hw/i386/smbios.h"
#include "qemu/bitmap.h"
#define MACHINE_PC "pc"
#define MACHINE_Q35 "q35"
@ -46,6 +48,8 @@ typedef struct {
uint32_t *rsdt_tables_addr;
int rsdt_tables_nr;
GArray *tables;
uint32_t smbios_ep_addr;
struct smbios_entry_point smbios_ep_table;
} test_data;
#define LOW(x) ((x) & 0xff)
@ -581,6 +585,124 @@ static void test_acpi_asl(test_data *data)
free_test_data(&exp_data);
}
static void test_smbios_ep_address(test_data *data)
{
uint32_t off;
/* find smbios entry point structure */
for (off = 0xf0000; off < 0x100000; off += 0x10) {
uint8_t sig[] = "_SM_";
int i;
for (i = 0; i < sizeof sig - 1; ++i) {
sig[i] = readb(off + i);
}
if (!memcmp(sig, "_SM_", sizeof sig)) {
break;
}
}
g_assert_cmphex(off, <, 0x100000);
data->smbios_ep_addr = off;
}
static void test_smbios_ep_table(test_data *data)
{
struct smbios_entry_point *ep_table = &data->smbios_ep_table;
uint32_t addr = data->smbios_ep_addr;
ACPI_READ_ARRAY(ep_table->anchor_string, addr);
g_assert(!memcmp(ep_table->anchor_string, "_SM_", 4));
ACPI_READ_FIELD(ep_table->checksum, addr);
ACPI_READ_FIELD(ep_table->length, addr);
ACPI_READ_FIELD(ep_table->smbios_major_version, addr);
ACPI_READ_FIELD(ep_table->smbios_minor_version, addr);
ACPI_READ_FIELD(ep_table->max_structure_size, addr);
ACPI_READ_FIELD(ep_table->entry_point_revision, addr);
ACPI_READ_ARRAY(ep_table->formatted_area, addr);
ACPI_READ_ARRAY(ep_table->intermediate_anchor_string, addr);
g_assert(!memcmp(ep_table->intermediate_anchor_string, "_DMI_", 5));
ACPI_READ_FIELD(ep_table->intermediate_checksum, addr);
ACPI_READ_FIELD(ep_table->structure_table_length, addr);
g_assert_cmpuint(ep_table->structure_table_length, >, 0);
ACPI_READ_FIELD(ep_table->structure_table_address, addr);
ACPI_READ_FIELD(ep_table->number_of_structures, addr);
g_assert_cmpuint(ep_table->number_of_structures, >, 0);
ACPI_READ_FIELD(ep_table->smbios_bcd_revision, addr);
g_assert(!acpi_checksum((uint8_t *)ep_table, sizeof *ep_table));
g_assert(!acpi_checksum((uint8_t *)ep_table + 0x10,
sizeof *ep_table - 0x10));
}
static inline bool smbios_single_instance(uint8_t type)
{
switch (type) {
case 0:
case 1:
case 2:
case 3:
case 16:
case 32:
case 127:
return true;
default:
return false;
}
}
static void test_smbios_structs(test_data *data)
{
DECLARE_BITMAP(struct_bitmap, SMBIOS_MAX_TYPE+1) = { 0 };
struct smbios_entry_point *ep_table = &data->smbios_ep_table;
uint32_t addr = ep_table->structure_table_address;
int i, len, max_len = 0;
uint8_t type, prv, crt;
uint8_t required_struct_types[] = {0, 1, 3, 4, 16, 17, 19, 32, 127};
/* walk the smbios tables */
for (i = 0; i < ep_table->number_of_structures; i++) {
/* grab type and formatted area length from struct header */
type = readb(addr);
g_assert_cmpuint(type, <=, SMBIOS_MAX_TYPE);
len = readb(addr + 1);
/* single-instance structs must not have been encountered before */
if (smbios_single_instance(type)) {
g_assert(!test_bit(type, struct_bitmap));
}
set_bit(type, struct_bitmap);
/* seek to end of unformatted string area of this struct ("\0\0") */
prv = crt = 1;
while (prv || crt) {
prv = crt;
crt = readb(addr + len);
len++;
}
/* keep track of max. struct size */
if (max_len < len) {
max_len = len;
g_assert_cmpuint(max_len, <=, ep_table->max_structure_size);
}
/* start of next structure */
addr += len;
}
/* total table length and max struct size must match entry point values */
g_assert_cmpuint(ep_table->structure_table_length, ==,
addr - ep_table->structure_table_address);
g_assert_cmpuint(ep_table->max_structure_size, ==, max_len);
/* required struct types must all be present */
for (i = 0; i < ARRAY_SIZE(required_struct_types); i++) {
g_assert(test_bit(required_struct_types[i], struct_bitmap));
}
}
static void test_acpi_one(const char *params, test_data *data)
{
char *args;
@ -633,6 +755,10 @@ static void test_acpi_one(const char *params, test_data *data)
}
}
test_smbios_ep_address(data);
test_smbios_ep_table(data);
test_smbios_structs(data);
qtest_quit(global_qtest);
g_free(args);
}