diff options
Diffstat (limited to 'NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c')
| -rw-r--r-- | NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c b/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c index 540adee311..5bbefcee9d 100644 --- a/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c +++ b/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c @@ -98,6 +98,17 @@ PxeBcSelectBootPrompt ( ASSERT (!Mode->UsingIpv6);
VendorOpt = &Cache->Dhcp4.VendorOpt;
+ //
+ // According to the PXE specification 2.1, Table 2-1 PXE DHCP Options,
+ // we must not consider a boot prompt or boot menu if all of the following hold:
+ // - the PXE_DISCOVERY_CONTROL tag(6) is present inside the Vendor Options(43), and has bit 3 set
+ // - a boot file name has been presented in the initial DHCP or ProxyDHCP offer packet.
+ //
+ if (IS_DISABLE_PROMPT_MENU (VendorOpt->DiscoverCtrl) &&
+ Cache->Dhcp4.OptList[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] != NULL) {
+ return EFI_ABORTED;
+ }
+
if (!IS_VALID_BOOT_PROMPT (VendorOpt->BitMap)) {
return EFI_TIMEOUT;
}
|