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smbios: add smbios 3.0 support 

This patch adds support for SMBIOS 3.0 entry point. When caller invokes
smbios_set_defaults(), it can specify entry point as 2.1 or 3.0. Then
smbios_get_tables() will return the entry point table in right format.

Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Wei Huang <wei@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 1440615870-9518-2-git-send-email-wei@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Wei Huang 2015-09-07 10:39:28 +01:00 committed by Peter Maydell
parent 8012c84ff9
commit 8629912006
5 changed files with 113 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
hw/i386/pc_piix.c
View File

@ -173,7 +173,8 @@ static void pc_init1(MachineState *machine)
MachineClass *mc = MACHINE_GET_CLASS(machine);
/* These values are guest ABI, do not change */
smbios_set_defaults("QEMU", "Standard PC (i440FX + PIIX, 1996)",
mc->name, smbios_legacy_mode, smbios_uuid_encoded);
mc->name, smbios_legacy_mode, smbios_uuid_encoded,
SMBIOS_ENTRY_POINT_21);
}
/* allocate ram and load rom/bios */

3
hw/i386/pc_q35.c
View File

@ -165,7 +165,8 @@ static void pc_q35_init(MachineState *machine)
if (smbios_defaults) {
/* These values are guest ABI, do not change */
smbios_set_defaults("QEMU", "Standard PC (Q35 + ICH9, 2009)",
mc->name, smbios_legacy_mode, smbios_uuid_encoded);
mc->name, smbios_legacy_mode, smbios_uuid_encoded,
SMBIOS_ENTRY_POINT_21);
}
/* allocate ram and load rom/bios */

78
hw/smbios/smbios.c
View File

@ -55,7 +55,9 @@ static uint8_t *smbios_tables;
static size_t smbios_tables_len;
static unsigned smbios_table_max;
static unsigned smbios_table_cnt;
static struct smbios_entry_point ep;
static SmbiosEntryPointType smbios_ep_type = SMBIOS_ENTRY_POINT_21;
static SmbiosEntryPoint ep;
static int smbios_type4_count = 0;
static bool smbios_immutable;
@ -771,11 +773,12 @@ void smbios_set_cpuid(uint32_t version, uint32_t features)
void smbios_set_defaults(const char *manufacturer, const char *product,
const char *version, bool legacy_mode,
bool uuid_encoded)
bool uuid_encoded, SmbiosEntryPointType ep_type)
{
smbios_have_defaults = true;
smbios_legacy = legacy_mode;
smbios_uuid_encoded = uuid_encoded;
smbios_ep_type = ep_type;
/* drop unwanted version of command-line file blob(s) */
if (smbios_legacy) {
@ -808,26 +811,53 @@ void smbios_set_defaults(const char *manufacturer, const char *product,
static void smbios_entry_point_setup(void)
{
memcpy(ep.anchor_string, "_SM_", 4);
memcpy(ep.intermediate_anchor_string, "_DMI_", 5);
ep.length = sizeof(struct smbios_entry_point);
ep.entry_point_revision = 0; /* formatted_area reserved, per spec v2.1+ */
memset(ep.formatted_area, 0, 5);
switch (smbios_ep_type) {
case SMBIOS_ENTRY_POINT_21:
memcpy(ep.ep21.anchor_string, "_SM_", 4);
memcpy(ep.ep21.intermediate_anchor_string, "_DMI_", 5);
ep.ep21.length = sizeof(struct smbios_21_entry_point);
ep.ep21.entry_point_revision = 0; /* formatted_area reserved */
memset(ep.ep21.formatted_area, 0, 5);
/* compliant with smbios spec v2.8 */
ep.smbios_major_version = 2;
ep.smbios_minor_version = 8;
ep.smbios_bcd_revision = 0x28;
/* compliant with smbios spec v2.8 */
ep.ep21.smbios_major_version = 2;
ep.ep21.smbios_minor_version = 8;
ep.ep21.smbios_bcd_revision = 0x28;
/* set during table construction, but BIOS may override: */
ep.structure_table_length = cpu_to_le16(smbios_tables_len);
ep.max_structure_size = cpu_to_le16(smbios_table_max);
ep.number_of_structures = cpu_to_le16(smbios_table_cnt);
/* set during table construction, but BIOS may override: */
ep.ep21.structure_table_length = cpu_to_le16(smbios_tables_len);
ep.ep21.max_structure_size = cpu_to_le16(smbios_table_max);
ep.ep21.number_of_structures = cpu_to_le16(smbios_table_cnt);
/* BIOS must recalculate: */
ep.checksum = 0;
ep.intermediate_checksum = 0;
ep.structure_table_address = cpu_to_le32(0);
/* BIOS must recalculate */
ep.ep21.checksum = 0;
ep.ep21.intermediate_checksum = 0;
ep.ep21.structure_table_address = cpu_to_le32(0);
break;
case SMBIOS_ENTRY_POINT_30:
memcpy(ep.ep30.anchor_string, "_SM3_", 5);
ep.ep30.length = sizeof(struct smbios_30_entry_point);
ep.ep30.entry_point_revision = 1;
ep.ep30.reserved = 0;
/* compliant with smbios spec 3.0 */
ep.ep30.smbios_major_version = 3;
ep.ep30.smbios_minor_version = 0;
ep.ep30.smbios_doc_rev = 0;
/* set during table construct, but BIOS might override */
ep.ep30.structure_table_max_size = cpu_to_le32(smbios_tables_len);
/* BIOS must recalculate */
ep.ep30.checksum = 0;
ep.ep30.structure_table_address = cpu_to_le64(0);
break;
default:
abort();
break;
}
}
void smbios_get_tables(const struct smbios_phys_mem_area *mem_array,
@ -885,7 +915,15 @@ void smbios_get_tables(const struct smbios_phys_mem_area *mem_array,
*tables = smbios_tables;
*tables_len = smbios_tables_len;
*anchor = (uint8_t *)&ep;
*anchor_len = sizeof(struct smbios_entry_point);
/* calculate length based on anchor string */
if (!strncmp((char *)&ep, "_SM_", 4)) {
*anchor_len = sizeof(struct smbios_21_entry_point);
} else if (!strncmp((char *)&ep, "_SM3_", 5)) {
*anchor_len = sizeof(struct smbios_30_entry_point);
} else {
abort();
}
}
static void save_opt(const char **dest, QemuOpts *opts, const char *name)

62
include/hw/smbios/smbios.h
View File

@ -23,25 +23,27 @@ struct smbios_phys_mem_area {
uint64_t length;
};
void smbios_entry_add(QemuOpts *opts);
void smbios_set_cpuid(uint32_t version, uint32_t features);
void smbios_set_defaults(const char *manufacturer, const char *product,
const char *version, bool legacy_mode,
bool uuid_encoded);
uint8_t *smbios_get_table_legacy(size_t *length);
void smbios_get_tables(const struct smbios_phys_mem_area *mem_array,
const unsigned int mem_array_size,
uint8_t **tables, size_t *tables_len,
uint8_t **anchor, size_t *anchor_len);
/*
* SMBIOS spec defined tables
*/
typedef enum SmbiosEntryPointType {
SMBIOS_ENTRY_POINT_21,
SMBIOS_ENTRY_POINT_30,
} SmbiosEntryPointType;
/* SMBIOS entry point (anchor).
* BIOS must place this at a 16-bit-aligned address between 0xf0000 and 0xfffff.
/* SMBIOS Entry Point
* There are two types of entry points defined in the SMBIOS specification
* (see below). BIOS must place the entry point(s) at a 16-bit-aligned
* address between 0xf0000 and 0xfffff. Note that either entry point type
* can be used in a 64-bit target system, except that SMBIOS 2.1 entry point
* only allows the SMBIOS struct table to reside below 4GB address space.
*/
struct smbios_entry_point {
/* SMBIOS 2.1 (32-bit) Entry Point
* - introduced since SMBIOS 2.1
* - supports structure table below 4GB only
*/
struct smbios_21_entry_point {
uint8_t anchor_string[4];
uint8_t checksum;
uint8_t length;
@ -58,6 +60,28 @@ struct smbios_entry_point {
uint8_t smbios_bcd_revision;
} QEMU_PACKED;
/* SMBIOS 3.0 (64-bit) Entry Point
* - introduced since SMBIOS 3.0
* - supports structure table at 64-bit address space
*/
struct smbios_30_entry_point {
uint8_t anchor_string[5];
uint8_t checksum;
uint8_t length;
uint8_t smbios_major_version;
uint8_t smbios_minor_version;
uint8_t smbios_doc_rev;
uint8_t entry_point_revision;
uint8_t reserved;
uint32_t structure_table_max_size;
uint64_t structure_table_address;
} QEMU_PACKED;
typedef union {
struct smbios_21_entry_point ep21;
struct smbios_30_entry_point ep30;
} QEMU_PACKED SmbiosEntryPoint;
/* This goes at the beginning of every SMBIOS structure. */
struct smbios_structure_header {
uint8_t type;
@ -232,4 +256,14 @@ struct smbios_type_127 {
struct smbios_structure_header header;
} QEMU_PACKED;
void smbios_entry_add(QemuOpts *opts);
void smbios_set_cpuid(uint32_t version, uint32_t features);
void smbios_set_defaults(const char *manufacturer, const char *product,
const char *version, bool legacy_mode,
bool uuid_encoded, SmbiosEntryPointType ep_type);
uint8_t *smbios_get_table_legacy(size_t *length);
void smbios_get_tables(const struct smbios_phys_mem_area *mem_array,
const unsigned int mem_array_size,
uint8_t **tables, size_t *tables_len,
uint8_t **anchor, size_t *anchor_len);
#endif /*QEMU_SMBIOS_H */

6
tests/bios-tables-test.c
View File

@ -50,7 +50,7 @@ typedef struct {
int rsdt_tables_nr;
GArray *tables;
uint32_t smbios_ep_addr;
struct smbios_entry_point smbios_ep_table;
struct smbios_21_entry_point smbios_ep_table;
} test_data;
#define LOW(x) ((x) & 0xff)
@ -601,7 +601,7 @@ static void test_acpi_asl(test_data *data)
static bool smbios_ep_table_ok(test_data *data)
{
struct smbios_entry_point *ep_table = &data->smbios_ep_table;
struct smbios_21_entry_point *ep_table = &data->smbios_ep_table;
uint32_t addr = data->smbios_ep_addr;
ACPI_READ_ARRAY(ep_table->anchor_string, addr);
@ -681,7 +681,7 @@ static inline bool smbios_single_instance(uint8_t type)
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;
struct smbios_21_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;