static void
smbios_setuuid(const char *name, const caddr_t addr, const int ver)
{
char uuid[37];
int byteorder, i, ones, zeros;
UUID_TYPE n;
uint32_t f1;
uint16_t f2, f3;
for (i = 0, ones = 0, zeros = 0; i < UUID_SIZE; i += UUID_STEP) {
n = UUID_GET(addr, i) + 1;
if (zeros == 0 && n == 0)
ones++;
else if (ones == 0 && n == 1)
zeros++;
else
break;
}
if (ones != UUID_ALL_BITS && zeros != UUID_ALL_BITS) {
/*
* 3.3.2.1 System UUID
*
* "Although RFC 4122 recommends network byte order for all
* fields, the PC industry (including the ACPI, UEFI, and
* Microsoft specifications) has consistently used
* little-endian byte encoding for the first three fields:
* time_low, time_mid, time_hi_and_version. The same encoding,
* also known as wire format, should also be used for the
* SMBIOS representation of the UUID."
*
* Note: We use network byte order for backward compatibility
* unless SMBIOS version is 2.6+ or little-endian is forced.
*/
#if defined(SMBIOS_LITTLE_ENDIAN_UUID)
byteorder = LITTLE_ENDIAN;
#elif defined(SMBIOS_NETWORK_ENDIAN_UUID)
byteorder = BIG_ENDIAN;
#else
byteorder = ver < 0x0206 ? BIG_ENDIAN : LITTLE_ENDIAN;
#endif
if (byteorder != LITTLE_ENDIAN) {
f1 = ntohl(SMBIOS_GET32(addr, 0));
f2 = ntohs(SMBIOS_GET16(addr, 4));
f3 = ntohs(SMBIOS_GET16(addr, 6));
} else {
f1 = le32toh(SMBIOS_GET32(addr, 0));
f2 = le16toh(SMBIOS_GET16(addr, 4));
f3 = le16toh(SMBIOS_GET16(addr, 6));
}
sprintf(uuid,
"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
f1, f2, f3, SMBIOS_GET8(addr, 8), SMBIOS_GET8(addr, 9),
SMBIOS_GET8(addr, 10), SMBIOS_GET8(addr, 11),
SMBIOS_GET8(addr, 12), SMBIOS_GET8(addr, 13),
SMBIOS_GET8(addr, 14), SMBIOS_GET8(addr, 15));
setenv(name, uuid, 1);
}
}
void
smbios_detect(void)
{
char buf[16];
caddr_t addr, dmi, smbios;
size_t count, length;
uint32_t paddr;
int i, major, minor, ver;
/* Search signatures and validate checksums. */
smbios = smbios_sigsearch(PTOV(SMBIOS_START), SMBIOS_LENGTH);
if (smbios == NULL)
return;
length = SMBIOS_GET16(smbios, 0x16); /* Structure Table Length */
paddr = SMBIOS_GET32(smbios, 0x18); /* Structure Table Address */
count = SMBIOS_GET16(smbios, 0x1c); /* No of SMBIOS Structures */
ver = SMBIOS_GET8(smbios, 0x1e); /* SMBIOS BCD Revision */
if (ver != 0) {
major = ver >> 4;
minor = ver & 0x0f;
if (major > 9 || minor > 9)
ver = 0;
}
static void
smbios_probe(const caddr_t addr)
{
caddr_t saddr, info;
uintptr_t paddr;
if (smbios.probed)
return;
smbios.probed = 1;
/* Search signatures and validate checksums. */
saddr = smbios_sigsearch(addr ? addr : PTOV(SMBIOS_START),
SMBIOS_LENGTH);
if (saddr == NULL)
return;
smbios.length = SMBIOS_GET16(saddr, 0x16); /* Structure Table Length */
paddr = SMBIOS_GET32(saddr, 0x18); /* Structure Table Address */
smbios.count = SMBIOS_GET16(saddr, 0x1c); /* No of SMBIOS Structures */
smbios.ver = SMBIOS_GET8(saddr, 0x1e); /* SMBIOS BCD Revision */
if (smbios.ver != 0) {
smbios.major = smbios.ver >> 4;
smbios.minor = smbios.ver & 0x0f;
if (smbios.major > 9 || smbios.minor > 9)
smbios.ver = 0;
}
