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diff --git a/stand/libsa/smbios.c b/stand/libsa/smbios.c
--- a/stand/libsa/smbios.c
+++ b/stand/libsa/smbios.c
@@ -298,6 +298,8 @@
{
caddr_t cp;
int proc, size, osize, type;
+ uint8_t bios_minor, bios_major;
+ char buf[16];
type = SMBIOS_GET8(addr, 0); /* 3.1.2 Structure Header Format */
switch(type) {
@@ -305,6 +307,13 @@
smbios_setenv("smbios.bios.vendor", addr, 0x04);
smbios_setenv("smbios.bios.version", addr, 0x05);
smbios_setenv("smbios.bios.reldate", addr, 0x08);
+ bios_major = SMBIOS_GET8(addr, 0x14);
+ bios_minor = SMBIOS_GET8(addr, 0x15);
+ if (bios_minor != 0xFF && bios_major != 0xFF) {
+ snprintf(buf, sizeof(buf), "%u.%u",
+ bios_major, bios_minor);
+ setenv("smbios.bios.revision", buf, 1);
+ }
break;
case 1: /* 3.3.2 System Information (Type 1) */

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