qemu/hw/smbios.c
Blue Swirl ca20cf32ab Compile loader only once
Callers must pass ELF machine, byte swapping and symbol LSB clearing
information to ELF loader. A.out loader needs page size information, pass
that too as a parameter.

Extract prototypes to a separate file. Move loader.[ch] and elf_ops.h under hw.

Adjust callers. Also use target_phys_addr_t instead of target_ulong for
addresses: loader addresses aren't virtual.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-20 14:58:02 +00:00

240 lines
7.7 KiB
C

/*
* SMBIOS Support
*
* Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
*
* Authors:
* Alex Williamson <alex.williamson@hp.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
*/
#include "sysemu.h"
#include "smbios.h"
#include "loader.h"
/*
* Structures shared with the BIOS
*/
struct smbios_header {
uint16_t length;
uint8_t type;
} __attribute__((__packed__));
struct smbios_field {
struct smbios_header header;
uint8_t type;
uint16_t offset;
uint8_t data[];
} __attribute__((__packed__));
struct smbios_table {
struct smbios_header header;
uint8_t data[];
} __attribute__((__packed__));
#define SMBIOS_FIELD_ENTRY 0
#define SMBIOS_TABLE_ENTRY 1
static uint8_t *smbios_entries;
static size_t smbios_entries_len;
static int smbios_type4_count = 0;
static void smbios_validate_table(void)
{
if (smbios_type4_count && smbios_type4_count != smp_cpus) {
fprintf(stderr,
"Number of SMBIOS Type 4 tables must match cpu count.\n");
exit(1);
}
}
uint8_t *smbios_get_table(size_t *length)
{
smbios_validate_table();
*length = smbios_entries_len;
return smbios_entries;
}
/*
* To avoid unresolvable overlaps in data, don't allow both
* tables and fields for the same smbios type.
*/
static void smbios_check_collision(int type, int entry)
{
uint16_t *num_entries = (uint16_t *)smbios_entries;
struct smbios_header *header;
char *p;
int i;
if (!num_entries)
return;
p = (char *)(num_entries + 1);
for (i = 0; i < *num_entries; i++) {
header = (struct smbios_header *)p;
if (entry == SMBIOS_TABLE_ENTRY && header->type == SMBIOS_FIELD_ENTRY) {
struct smbios_field *field = (void *)header;
if (type == field->type) {
fprintf(stderr, "SMBIOS type %d field already defined, "
"cannot add table\n", type);
exit(1);
}
} else if (entry == SMBIOS_FIELD_ENTRY &&
header->type == SMBIOS_TABLE_ENTRY) {
struct smbios_structure_header *table = (void *)(header + 1);
if (type == table->type) {
fprintf(stderr, "SMBIOS type %d table already defined, "
"cannot add field\n", type);
exit(1);
}
}
p += le16_to_cpu(header->length);
}
}
void smbios_add_field(int type, int offset, int len, void *data)
{
struct smbios_field *field;
smbios_check_collision(type, SMBIOS_FIELD_ENTRY);
if (!smbios_entries) {
smbios_entries_len = sizeof(uint16_t);
smbios_entries = qemu_mallocz(smbios_entries_len);
}
smbios_entries = qemu_realloc(smbios_entries, smbios_entries_len +
sizeof(*field) + len);
field = (struct smbios_field *)(smbios_entries + smbios_entries_len);
field->header.type = SMBIOS_FIELD_ENTRY;
field->header.length = cpu_to_le16(sizeof(*field) + len);
field->type = type;
field->offset = cpu_to_le16(offset);
memcpy(field->data, data, len);
smbios_entries_len += sizeof(*field) + len;
(*(uint16_t *)smbios_entries) =
cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
}
static void smbios_build_type_0_fields(const char *t)
{
char buf[1024];
if (get_param_value(buf, sizeof(buf), "vendor", t))
smbios_add_field(0, offsetof(struct smbios_type_0, vendor_str),
strlen(buf) + 1, buf);
if (get_param_value(buf, sizeof(buf), "version", t))
smbios_add_field(0, offsetof(struct smbios_type_0, bios_version_str),
strlen(buf) + 1, buf);
if (get_param_value(buf, sizeof(buf), "date", t))
smbios_add_field(0, offsetof(struct smbios_type_0,
bios_release_date_str),
strlen(buf) + 1, buf);
if (get_param_value(buf, sizeof(buf), "release", t)) {
int major, minor;
sscanf(buf, "%d.%d", &major, &minor);
smbios_add_field(0, offsetof(struct smbios_type_0,
system_bios_major_release), 1, &major);
smbios_add_field(0, offsetof(struct smbios_type_0,
system_bios_minor_release), 1, &minor);
}
}
static void smbios_build_type_1_fields(const char *t)
{
char buf[1024];
if (get_param_value(buf, sizeof(buf), "manufacturer", t))
smbios_add_field(1, offsetof(struct smbios_type_1, manufacturer_str),
strlen(buf) + 1, buf);
if (get_param_value(buf, sizeof(buf), "product", t))
smbios_add_field(1, offsetof(struct smbios_type_1, product_name_str),
strlen(buf) + 1, buf);
if (get_param_value(buf, sizeof(buf), "version", t))
smbios_add_field(1, offsetof(struct smbios_type_1, version_str),
strlen(buf) + 1, buf);
if (get_param_value(buf, sizeof(buf), "serial", t))
smbios_add_field(1, offsetof(struct smbios_type_1, serial_number_str),
strlen(buf) + 1, buf);
if (get_param_value(buf, sizeof(buf), "uuid", t)) {
if (qemu_uuid_parse(buf, qemu_uuid) != 0) {
fprintf(stderr, "Invalid SMBIOS UUID string\n");
exit(1);
}
}
if (get_param_value(buf, sizeof(buf), "sku", t))
smbios_add_field(1, offsetof(struct smbios_type_1, sku_number_str),
strlen(buf) + 1, buf);
if (get_param_value(buf, sizeof(buf), "family", t))
smbios_add_field(1, offsetof(struct smbios_type_1, family_str),
strlen(buf) + 1, buf);
}
int smbios_entry_add(const char *t)
{
char buf[1024];
if (get_param_value(buf, sizeof(buf), "file", t)) {
struct smbios_structure_header *header;
struct smbios_table *table;
int size = get_image_size(buf);
if (size == -1 || size < sizeof(struct smbios_structure_header)) {
fprintf(stderr, "Cannot read smbios file %s\n", buf);
exit(1);
}
if (!smbios_entries) {
smbios_entries_len = sizeof(uint16_t);
smbios_entries = qemu_mallocz(smbios_entries_len);
}
smbios_entries = qemu_realloc(smbios_entries, smbios_entries_len +
sizeof(*table) + size);
table = (struct smbios_table *)(smbios_entries + smbios_entries_len);
table->header.type = SMBIOS_TABLE_ENTRY;
table->header.length = cpu_to_le16(sizeof(*table) + size);
if (load_image(buf, table->data) != size) {
fprintf(stderr, "Failed to load smbios file %s", buf);
exit(1);
}
header = (struct smbios_structure_header *)(table->data);
smbios_check_collision(header->type, SMBIOS_TABLE_ENTRY);
if (header->type == 4) {
smbios_type4_count++;
}
smbios_entries_len += sizeof(*table) + size;
(*(uint16_t *)smbios_entries) =
cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
return 0;
}
if (get_param_value(buf, sizeof(buf), "type", t)) {
unsigned long type = strtoul(buf, NULL, 0);
switch (type) {
case 0:
smbios_build_type_0_fields(t);
return 0;
case 1:
smbios_build_type_1_fields(t);
return 0;
default:
fprintf(stderr, "Don't know how to build fields for SMBIOS type "
"%ld\n", type);
exit(1);
}
}
fprintf(stderr, "smbios: must specify type= or file=\n");
return -1;
}