void
display_uuid(void)
{
struct smbios_type_1 *tbl = smbios_next(SMBiosAddr, NULL);
int minlen = offsetof(struct smbios_type_1, uuid) + sizeof(tbl->uuid);
for (; tbl; tbl = smbios_next(SMBiosAddr, tbl))
if (tbl->header.type == 1 && tbl->header.length >= minlen) {
u8 *uuid = tbl->uuid;
u8 empty_uuid[sizeof(tbl->uuid)] = { 0 };
if (memcmp(uuid, empty_uuid, sizeof(empty_uuid)) == 0)
return;
printf("Machine UUID"
" %02x%02x%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x%02x%02x%02x%02x\n"
, uuid[ 0], uuid[ 1], uuid[ 2], uuid[ 3]
, uuid[ 4], uuid[ 5]
, uuid[ 6], uuid[ 7]
, uuid[ 8], uuid[ 9]
, uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15]);
return;
}
}
/*
* Starting with version 2.1 qemu provides a full set of smbios tables
* for the virtual hardware emulated, except type 0 (bios information).
*
* What we are going to do here is find the type0 table, keep it, and
* override everything else generated by coreboot with the qemu smbios
* tables.
*
* It's a bit hackish, but qemu is a special case (compared to real
* hardware) and this way we don't need special qemu support in the
* generic smbios code.
*/
unsigned long fw_cfg_smbios_tables(int *handle, unsigned long *current)
{
struct smbios_type0 *t0;
unsigned long start, end;
int len, ret, i, count = 1;
char *str;
len = fw_cfg_check_file("etc/smbios/smbios-tables");
if (len < 0)
return 0;
printk(BIOS_DEBUG, "QEMU: found smbios tables in fw_cfg (len %d).\n", len);
/*
* Search backwards for "coreboot" (first string in type0 table,
* see src/arch/x86/boot/smbios.c), then find type0 table.
*/
for (i = 0; i < 16384; i++) {
str = (char*)(*current - i);
if (strcmp(str, "coreboot") == 0)
break;
}
if (i == 16384)
return 0;
i += sizeof(struct smbios_type0) - 2;
t0 = (struct smbios_type0*)(*current - i);
if (t0->type != SMBIOS_BIOS_INFORMATION || t0->handle != 0)
return 0;
printk(BIOS_DEBUG, "QEMU: coreboot type0 table found at 0x%lx.\n",
*current - i);
start = smbios_next(*current - i);
/*
* Fetch smbios tables from qemu, go find the end marker.
* We'll exclude the end marker as coreboot will add one.
*/
printk(BIOS_DEBUG, "QEMU: loading smbios tables to 0x%lx\n", start);
fw_cfg_load_file("etc/smbios/smbios-tables", (void*)start);
end = start;
do {
t0 = (struct smbios_type0*)end;
if (t0->type == SMBIOS_END_OF_TABLE)
break;
end = smbios_next(end);
count++;
} while (end < start + len);
/* final fixups. */
ret = end - *current;
*current = end;
*handle = count;
return ret;
}
void
display_uuid(void)
{
struct smbios_type_1 *tbl = smbios_next(SMBiosAddr, NULL);
int minlen = offsetof(struct smbios_type_1, uuid) + sizeof(tbl->uuid);
for (; tbl; tbl = smbios_next(SMBiosAddr, tbl))
if (tbl->header.type == 1 && tbl->header.length >= minlen) {
u8 *uuid = tbl->uuid;
u8 empty_uuid[sizeof(tbl->uuid)] = { 0 };
if (memcmp(uuid, empty_uuid, sizeof(empty_uuid)) == 0)
return;
/*
* According to SMBIOS v2.6 the first three fields are encoded in
* little-endian format. Versions prior to v2.6 did not specify
* the encoding, but we follow dmidecode and assume big-endian
* encoding.
*/
if (SMBiosAddr->smbios_major_version > 2 ||
(SMBiosAddr->smbios_major_version == 2 &&
SMBiosAddr->smbios_minor_version >= 6)) {
printf("Machine UUID"
" %02x%02x%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x%02x%02x%02x%02x\n"
, uuid[ 3], uuid[ 2], uuid[ 1], uuid[ 0]
, uuid[ 5], uuid[ 4]
, uuid[ 7], uuid[ 6]
, uuid[ 8], uuid[ 9]
, uuid[10], uuid[11], uuid[12]
, uuid[13], uuid[14], uuid[15]);
} else {
printf("Machine UUID"
" %02x%02x%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x%02x%02x%02x%02x\n"
, uuid[ 0], uuid[ 1], uuid[ 2], uuid[ 3]
, uuid[ 4], uuid[ 5]
, uuid[ 6], uuid[ 7]
, uuid[ 8], uuid[ 9]
, uuid[10], uuid[11], uuid[12]
, uuid[13], uuid[14], uuid[15]);
}
return;
}
}
static int
smbios_romfile_setup(void)
{
struct romfile_s *f_anchor = romfile_find("etc/smbios/smbios-anchor");
struct romfile_s *f_tables = romfile_find("etc/smbios/smbios-tables");
struct smbios_entry_point ep;
struct smbios_type_0 *t0;
u16 qtables_len, need_t0 = 1;
u8 *qtables, *tables;
if (!f_anchor || !f_tables || f_anchor->size != sizeof(ep))
return 0;
f_anchor->copy(f_anchor, &ep, f_anchor->size);
if (f_tables->size != ep.structure_table_length)
return 0;
qtables = malloc_tmphigh(f_tables->size);
if (!qtables) {
warn_noalloc();
return 0;
}
f_tables->copy(f_tables, qtables, f_tables->size);
ep.structure_table_address = (u32)qtables; /* for smbios_next(), below */
/* did we get a type 0 structure ? */
for (t0 = smbios_next(&ep, NULL); t0; t0 = smbios_next(&ep, t0))
if (t0->header.type == 0) {
need_t0 = 0;
break;
}
qtables_len = ep.structure_table_length;
if (need_t0) {
/* common case: add our own type 0, with 3 strings and 4 '\0's */
u16 t0_len = sizeof(struct smbios_type_0) + strlen(BIOS_NAME) +
strlen(VERSION) + strlen(BIOS_DATE) + 4;
ep.structure_table_length += t0_len;
if (t0_len > ep.max_structure_size)
ep.max_structure_size = t0_len;
ep.number_of_structures++;
}
/* allocate final blob and record its address in the entry point */
if (ep.structure_table_length > BUILD_MAX_SMBIOS_FSEG)
tables = malloc_high(ep.structure_table_length);
else
tables = malloc_fseg(ep.structure_table_length);
if (!tables) {
warn_noalloc();
free(qtables);
return 0;
}
ep.structure_table_address = (u32)tables;
/* populate final blob */
if (need_t0)
tables = smbios_new_type_0(tables, BIOS_NAME, VERSION, BIOS_DATE);
memcpy(tables, qtables, qtables_len);
free(qtables);
/* finalize entry point */
ep.checksum -= checksum(&ep, 0x10);
ep.intermediate_checksum -= checksum((void *)&ep + 0x10, ep.length - 0x10);
copy_smbios(&ep);
return 1;
}
