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CloverBootloader/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c

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/** @file
Boot functions implementation for UefiPxeBc Driver.
Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "PxeBcImpl.h"
/**
Display the string of the boot item.
If the length of the boot item string beyond 70 Char, just display 70 Char.
@param[in] Str The pointer to the string.
@param[in] Len The length of the string.
**/
VOID
PxeBcDisplayBootItem (
IN UINT8 *Str,
IN UINT8 Len
)
{
UINT8 Tmp;
//
// Cut off the chars behind 70th.
//
Len = (UINT8)MIN (PXEBC_DISPLAY_MAX_LINE, Len);
Tmp = Str[Len];
Str[Len] = 0;
AsciiPrint ("%a \n", Str);
//
// Restore the original 70th char.
//
Str[Len] = Tmp;
}
/**
Select and maintain the boot prompt if needed.
@param[in] Private Pointer to PxeBc private data.
@retval EFI_SUCCESS Selected boot prompt done.
@retval EFI_TIMEOUT Selected boot prompt timed out.
@retval EFI_NOT_FOUND The proxy offer is not Pxe10.
@retval EFI_ABORTED User cancelled the operation.
@retval EFI_NOT_READY Reading the input key from the keyboard has not finish.
**/
EFI_STATUS
PxeBcSelectBootPrompt (
IN PXEBC_PRIVATE_DATA *Private
)
{
PXEBC_DHCP_PACKET_CACHE *Cache;
PXEBC_VENDOR_OPTION *VendorOpt;
EFI_PXE_BASE_CODE_MODE *Mode;
EFI_EVENT TimeoutEvent;
EFI_EVENT DescendEvent;
EFI_INPUT_KEY InputKey;
EFI_STATUS Status;
UINT32 OfferType;
UINT8 Timeout;
UINT8 *Prompt;
UINT8 PromptLen;
INT32 SecCol;
INT32 SecRow;
TimeoutEvent = NULL;
DescendEvent = NULL;
Mode = Private->PxeBc.Mode;
Cache = Mode->ProxyOfferReceived ? &Private->ProxyOffer : &Private->DhcpAck;
OfferType = Mode->UsingIpv6 ? Cache->Dhcp6.OfferType : Cache->Dhcp4.OfferType;
//
// Only DhcpPxe10 and ProxyPxe10 offer needs boot prompt.
//
if ((OfferType != PxeOfferTypeProxyPxe10) && (OfferType != PxeOfferTypeDhcpPxe10)) {
return EFI_NOT_FOUND;
}
//
// There is no specified ProxyPxe10 for IPv6 in PXE and UEFI spec.
//
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;
}
Timeout = VendorOpt->MenuPrompt->Timeout;
Prompt = VendorOpt->MenuPrompt->Prompt;
PromptLen = (UINT8)(VendorOpt->MenuPromptLen - 1);
//
// The valid scope of Timeout refers to PXE2.1 spec.
//
if (Timeout == 0) {
return EFI_TIMEOUT;
}
if (Timeout == 255) {
return EFI_SUCCESS;
}
//
// Create and start a timer as timeout event.
//
Status = gBS->CreateEvent (
EVT_TIMER,
TPL_CALLBACK,
NULL,
NULL,
&TimeoutEvent
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->SetTimer (
TimeoutEvent,
TimerRelative,
MultU64x32 (Timeout, TICKS_PER_SECOND)
);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
//
// Create and start a periodic timer as descend event by second.
//
Status = gBS->CreateEvent (
EVT_TIMER,
TPL_CALLBACK,
NULL,
NULL,
&DescendEvent
);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
Status = gBS->SetTimer (
DescendEvent,
TimerPeriodic,
TICKS_PER_SECOND
);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
//
// Display the boot item and cursor on the screen.
//
SecCol = gST->ConOut->Mode->CursorColumn;
SecRow = gST->ConOut->Mode->CursorRow;
PxeBcDisplayBootItem (Prompt, PromptLen);
gST->ConOut->SetCursorPosition (gST->ConOut, SecCol + PromptLen, SecRow);
AsciiPrint ("(%d) ", Timeout--);
Status = EFI_TIMEOUT;
while (EFI_ERROR (gBS->CheckEvent (TimeoutEvent))) {
if (!EFI_ERROR (gBS->CheckEvent (DescendEvent))) {
gST->ConOut->SetCursorPosition (gST->ConOut, SecCol + PromptLen, SecRow);
AsciiPrint ("(%d) ", Timeout--);
}
if (gST->ConIn->ReadKeyStroke (gST->ConIn, &InputKey) == EFI_NOT_READY) {
gBS->Stall (10 * TICKS_PER_MS);
continue;
}
//
// Parse the input key by user.
// If <F8> or <Ctrl> + <M> is pressed, return success to display the boot menu.
//
if (InputKey.ScanCode == 0) {
switch (InputKey.UnicodeChar) {
case CTRL ('c'):
Status = EFI_ABORTED;
break;
case CTRL ('m'):
case 'm':
case 'M':
Status = EFI_SUCCESS;
break;
default:
continue;
}
} else {
switch (InputKey.ScanCode) {
case SCAN_F8:
Status = EFI_SUCCESS;
break;
case SCAN_ESC:
Status = EFI_ABORTED;
break;
default:
continue;
}
}
break;
}
//
// Reset the cursor on the screen.
//
gST->ConOut->SetCursorPosition (gST->ConOut, 0, SecRow + 1);
ON_EXIT:
if (DescendEvent != NULL) {
gBS->CloseEvent (DescendEvent);
}
if (TimeoutEvent != NULL) {
gBS->CloseEvent (TimeoutEvent);
}
return Status;
}
/**
Select the boot menu by user's input.
@param[in] Private Pointer to PxeBc private data.
@param[out] Type The type of the menu.
@param[in] UseDefaultItem Use default item or not.
@retval EFI_ABORTED User cancel operation.
@retval EFI_SUCCESS Select the boot menu success.
@retval EFI_NOT_READY Read the input key from the keyboard has not finish.
**/
EFI_STATUS
PxeBcSelectBootMenu (
IN PXEBC_PRIVATE_DATA *Private,
OUT UINT16 *Type,
IN BOOLEAN UseDefaultItem
)
{
EFI_PXE_BASE_CODE_MODE *Mode;
PXEBC_DHCP_PACKET_CACHE *Cache;
PXEBC_VENDOR_OPTION *VendorOpt;
EFI_INPUT_KEY InputKey;
UINT32 OfferType;
UINT8 MenuSize;
UINT8 MenuNum;
INT32 TopRow;
UINT16 Select;
UINT16 LastSelect;
UINT8 Index;
BOOLEAN Finish;
CHAR8 Blank[PXEBC_DISPLAY_MAX_LINE];
PXEBC_BOOT_MENU_ENTRY *MenuItem;
PXEBC_BOOT_MENU_ENTRY *MenuArray[PXEBC_MENU_MAX_NUM];
Finish = FALSE;
Select = 0;
Index = 0;
*Type = 0;
Mode = Private->PxeBc.Mode;
Cache = Mode->ProxyOfferReceived ? &Private->ProxyOffer : &Private->DhcpAck;
OfferType = Mode->UsingIpv6 ? Cache->Dhcp6.OfferType : Cache->Dhcp4.OfferType;
//
// There is no specified DhcpPxe10/ProxyPxe10 for IPv6 in PXE and UEFI spec.
//
ASSERT (!Mode->UsingIpv6);
ASSERT (OfferType == PxeOfferTypeProxyPxe10 || OfferType == PxeOfferTypeDhcpPxe10);
VendorOpt = &Cache->Dhcp4.VendorOpt;
if (!IS_VALID_BOOT_MENU (VendorOpt->BitMap)) {
return EFI_SUCCESS;
}
//
// Display the boot menu on the screen.
//
SetMem (Blank, sizeof (Blank), ' ');
MenuSize = VendorOpt->BootMenuLen;
MenuItem = VendorOpt->BootMenu;
if (MenuSize == 0) {
return EFI_DEVICE_ERROR;
}
while (MenuSize > 0 && Index < PXEBC_MENU_MAX_NUM) {
ASSERT (MenuItem != NULL);
MenuArray[Index] = MenuItem;
MenuSize = (UINT8)(MenuSize - (MenuItem->DescLen + 3));
MenuItem = (PXEBC_BOOT_MENU_ENTRY *)((UINT8 *)MenuItem + MenuItem->DescLen + 3);
Index++;
}
if (UseDefaultItem) {
ASSERT (MenuArray[0] != NULL);
CopyMem (Type, &MenuArray[0]->Type, sizeof (UINT16));
*Type = NTOHS (*Type);
return EFI_SUCCESS;
}
MenuNum = Index;
for (Index = 0; Index < MenuNum; Index++) {
ASSERT (MenuArray[Index] != NULL);
PxeBcDisplayBootItem (MenuArray[Index]->DescStr, MenuArray[Index]->DescLen);
}
TopRow = gST->ConOut->Mode->CursorRow - MenuNum;
//
// Select the boot item by user in the boot menu.
//
do {
//
// Highlight selected row.
//
gST->ConOut->SetAttribute (gST->ConOut, EFI_TEXT_ATTR (EFI_BLACK, EFI_LIGHTGRAY));
gST->ConOut->SetCursorPosition (gST->ConOut, 0, TopRow + Select);
ASSERT (Select < PXEBC_MENU_MAX_NUM);
ASSERT (MenuArray[Select] != NULL);
Blank[MenuArray[Select]->DescLen] = 0;
AsciiPrint ("%a\r", Blank);
PxeBcDisplayBootItem (MenuArray[Select]->DescStr, MenuArray[Select]->DescLen);
gST->ConOut->SetCursorPosition (gST->ConOut, 0, TopRow + MenuNum);
LastSelect = Select;
while (gST->ConIn->ReadKeyStroke (gST->ConIn, &InputKey) == EFI_NOT_READY) {
gBS->Stall (10 * TICKS_PER_MS);
}
if (InputKey.ScanCode == 0) {
switch (InputKey.UnicodeChar) {
case CTRL ('c'):
InputKey.ScanCode = SCAN_ESC;
break;
case CTRL ('j'): /* linefeed */
case CTRL ('m'): /* return */
Finish = TRUE;
break;
case CTRL ('i'): /* tab */
case ' ':
case 'd':
case 'D':
InputKey.ScanCode = SCAN_DOWN;
break;
case CTRL ('h'): /* backspace */
case 'u':
case 'U':
InputKey.ScanCode = SCAN_UP;
break;
default:
InputKey.ScanCode = 0;
}
}
switch (InputKey.ScanCode) {
case SCAN_LEFT:
case SCAN_UP:
if (Select != 0) {
Select--;
}
break;
case SCAN_DOWN:
case SCAN_RIGHT:
if (++Select == MenuNum) {
Select--;
}
break;
case SCAN_PAGE_UP:
case SCAN_HOME:
Select = 0;
break;
case SCAN_PAGE_DOWN:
case SCAN_END:
Select = (UINT16)(MenuNum - 1);
break;
case SCAN_ESC:
return EFI_ABORTED;
}
//
// Unhighlight the last selected row.
//
gST->ConOut->SetAttribute (gST->ConOut, EFI_TEXT_ATTR (EFI_LIGHTGRAY, EFI_BLACK));
gST->ConOut->SetCursorPosition (gST->ConOut, 0, TopRow + LastSelect);
ASSERT (LastSelect < PXEBC_MENU_MAX_NUM);
ASSERT (MenuArray[LastSelect] != NULL);
Blank[MenuArray[LastSelect]->DescLen] = 0;
AsciiPrint ("%a\r", Blank);
PxeBcDisplayBootItem (MenuArray[LastSelect]->DescStr, MenuArray[LastSelect]->DescLen);
gST->ConOut->SetCursorPosition (gST->ConOut, 0, TopRow + MenuNum);
} while (!Finish);
//
// Swap the byte order.
//
ASSERT (Select < PXEBC_MENU_MAX_NUM);
ASSERT (MenuArray[Select] != NULL);
CopyMem (Type, &MenuArray[Select]->Type, sizeof (UINT16));
*Type = NTOHS (*Type);
return EFI_SUCCESS;
}
/**
Parse out the boot information from the last Dhcp4 reply packet.
@param[in, out] Private Pointer to PxeBc private data.
@param[out] BufferSize Size of the boot file to be downloaded.
@retval EFI_SUCCESS Successfully parsed out all the boot information.
@retval Others Failed to parse out the boot information.
**/
EFI_STATUS
PxeBcDhcp4BootInfo (
IN OUT PXEBC_PRIVATE_DATA *Private,
OUT UINT64 *BufferSize
)
{
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
EFI_PXE_BASE_CODE_MODE *Mode;
EFI_STATUS Status;
PXEBC_DHCP4_PACKET_CACHE *Cache4;
UINT16 Value;
PXEBC_VENDOR_OPTION *VendorOpt;
PXEBC_BOOT_SVR_ENTRY *Entry;
PxeBc = &Private->PxeBc;
Mode = PxeBc->Mode;
Status = EFI_SUCCESS;
*BufferSize = 0;
//
// Get the last received Dhcp4 reply packet.
//
if (Mode->PxeReplyReceived) {
Cache4 = &Private->PxeReply.Dhcp4;
} else if (Mode->ProxyOfferReceived) {
Cache4 = &Private->ProxyOffer.Dhcp4;
} else {
Cache4 = &Private->DhcpAck.Dhcp4;
}
if (Cache4->OptList[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] == NULL) {
//
// This should never happen in a correctly configured DHCP / PXE
// environment. One misconfiguration that can cause it is two DHCP servers
// mistakenly running on the same network segment at the same time, and
// racing each other in answering DHCP requests. Thus, the DHCP packets
// that the edk2 PXE client considers "belonging together" may actually be
// entirely independent, coming from two (competing) DHCP servers.
//
// Try to deal with this gracefully. Note that this check is not
// comprehensive, as we don't try to identify all such errors.
//
return EFI_PROTOCOL_ERROR;
}
//
// Parse the boot server address.
// If prompt/discover is disabled, get the first boot server from the boot servers list.
// Otherwise, parse the boot server Ipv4 address from next server address field in DHCP header.
// If all these fields are not available, use option 54 instead.
//
VendorOpt = &Cache4->VendorOpt;
if (IS_DISABLE_PROMPT_MENU (VendorOpt->DiscoverCtrl) && IS_VALID_BOOT_SERVERS (VendorOpt->BitMap)) {
Entry = VendorOpt->BootSvr;
if ((VendorOpt->BootSvrLen >= sizeof (PXEBC_BOOT_SVR_ENTRY)) && (Entry->IpCnt > 0)) {
CopyMem (
&Private->ServerIp,
&Entry->IpAddr[0],
sizeof (EFI_IPv4_ADDRESS)
);
}
}
if (Private->ServerIp.Addr[0] == 0) {
//
// ServerIp.Addr[0] equals zero means we failed to get IP address from boot server list.
// Try to use next server address field.
//
CopyMem (
&Private->ServerIp,
&Cache4->Packet.Offer.Dhcp4.Header.ServerAddr,
sizeof (EFI_IPv4_ADDRESS)
);
}
if (Private->ServerIp.Addr[0] == 0) {
//
// Still failed , use the IP address from option 54.
//
CopyMem (
&Private->ServerIp,
Cache4->OptList[PXEBC_DHCP4_TAG_INDEX_SERVER_ID]->Data,
sizeof (EFI_IPv4_ADDRESS)
);
}
//
// Parse the boot file name by option.
//
Private->BootFileName = Cache4->OptList[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Data;
if (Cache4->OptList[PXEBC_DHCP4_TAG_INDEX_BOOTFILE_LEN] != NULL) {
//
// Parse the boot file size by option.
//
CopyMem (&Value, Cache4->OptList[PXEBC_DHCP4_TAG_INDEX_BOOTFILE_LEN]->Data, sizeof (Value));
Value = NTOHS (Value);
//
// The field of boot file size is 512 bytes in unit.
//
*BufferSize = 512 * Value;
} else {
//
// Get the bootfile size by tftp command if no option available.
//
Status = PxeBc->Mtftp (
PxeBc,
EFI_PXE_BASE_CODE_TFTP_GET_FILE_SIZE,
NULL,
FALSE,
BufferSize,
&Private->BlockSize,
&Private->ServerIp,
Private->BootFileName,
NULL,
FALSE
);
}
//
// Save the value of boot file size.
//
Private->BootFileSize = (UINTN)*BufferSize;
//
// Display all the information: boot server address, boot file name and boot file size.
//
AsciiPrint ("\n Server IP address is ");
PxeBcShowIp4Addr (&Private->ServerIp.v4);
AsciiPrint ("\n NBP filename is %a", Private->BootFileName);
AsciiPrint ("\n NBP filesize is %d Bytes", Private->BootFileSize);
return Status;
}
/**
Parse out the boot information from the last Dhcp6 reply packet.
@param[in, out] Private Pointer to PxeBc private data.
@param[out] BufferSize Size of the boot file to be downloaded.
@retval EFI_SUCCESS Successfully parsed out all the boot information.
@retval EFI_BUFFER_TOO_SMALL
@retval Others Failed to parse out the boot information.
**/
EFI_STATUS
PxeBcDhcp6BootInfo (
IN OUT PXEBC_PRIVATE_DATA *Private,
OUT UINT64 *BufferSize
)
{
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
EFI_PXE_BASE_CODE_MODE *Mode;
EFI_STATUS Status;
PXEBC_DHCP6_PACKET_CACHE *Cache6;
UINT16 Value;
PxeBc = &Private->PxeBc;
Mode = PxeBc->Mode;
Status = EFI_SUCCESS;
*BufferSize = 0;
//
// Get the last received Dhcp6 reply packet.
//
if (Mode->PxeReplyReceived) {
Cache6 = &Private->PxeReply.Dhcp6;
} else if (Mode->ProxyOfferReceived) {
Cache6 = &Private->ProxyOffer.Dhcp6;
} else {
Cache6 = &Private->DhcpAck.Dhcp6;
}
if (Cache6->OptList[PXEBC_DHCP6_IDX_BOOT_FILE_URL] == NULL) {
//
// This should never happen in a correctly configured DHCP / PXE
// environment. One misconfiguration that can cause it is two DHCP servers
// mistakenly running on the same network segment at the same time, and
// racing each other in answering DHCP requests. Thus, the DHCP packets
// that the edk2 PXE client considers "belonging together" may actually be
// entirely independent, coming from two (competing) DHCP servers.
//
// Try to deal with this gracefully. Note that this check is not
// comprehensive, as we don't try to identify all such errors.
//
return EFI_PROTOCOL_ERROR;
}
//
// Set the station address to IP layer.
//
Status = PxeBcSetIp6Address (Private);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Parse (m)tftp server ip address and bootfile name.
//
Status = PxeBcExtractBootFileUrl (
Private,
&Private->BootFileName,
&Private->ServerIp.v6,
(CHAR8 *)(Cache6->OptList[PXEBC_DHCP6_IDX_BOOT_FILE_URL]->Data),
NTOHS (Cache6->OptList[PXEBC_DHCP6_IDX_BOOT_FILE_URL]->OpLen)
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Parse the value of boot file size.
//
if (Cache6->OptList[PXEBC_DHCP6_IDX_BOOT_FILE_PARAM] != NULL) {
//
// Parse it out if have the boot file parameter option.
//
Status = PxeBcExtractBootFileParam ((CHAR8 *)Cache6->OptList[PXEBC_DHCP6_IDX_BOOT_FILE_PARAM]->Data, &Value);
if (EFI_ERROR (Status)) {
return Status;
}
//
// The field of boot file size is 512 bytes in unit.
//
*BufferSize = 512 * Value;
} else {
//
// Send get file size command by tftp if option unavailable.
//
Status = PxeBc->Mtftp (
PxeBc,
EFI_PXE_BASE_CODE_TFTP_GET_FILE_SIZE,
NULL,
FALSE,
BufferSize,
&Private->BlockSize,
&Private->ServerIp,
Private->BootFileName,
NULL,
FALSE
);
}
//
// Save the value of boot file size.
//
Private->BootFileSize = (UINTN)*BufferSize;
//
// Display all the information: boot server address, boot file name and boot file size.
//
AsciiPrint ("\n Server IP address is ");
PxeBcShowIp6Addr (&Private->ServerIp.v6);
AsciiPrint ("\n NBP filename is %a", Private->BootFileName);
AsciiPrint ("\n NBP filesize is %d Bytes", Private->BootFileSize);
return Status;
}
/**
Extract the discover information and boot server entry from the
cached packets if unspecified.
@param[in] Private Pointer to PxeBc private data.
@param[in] Type The type of bootstrap to perform.
@param[in, out] DiscoverInfo Pointer to EFI_PXE_BASE_CODE_DISCOVER_INFO.
@param[out] BootEntry Pointer to PXEBC_BOOT_SVR_ENTRY.
@param[out] SrvList Pointer to EFI_PXE_BASE_CODE_SRVLIST.
@retval EFI_SUCCESS Successfully extracted the information.
@retval EFI_DEVICE_ERROR Failed to extract the information.
**/
EFI_STATUS
PxeBcExtractDiscoverInfo (
IN PXEBC_PRIVATE_DATA *Private,
IN UINT16 Type,
IN OUT EFI_PXE_BASE_CODE_DISCOVER_INFO **DiscoverInfo,
OUT PXEBC_BOOT_SVR_ENTRY **BootEntry,
OUT EFI_PXE_BASE_CODE_SRVLIST **SrvList
)
{
EFI_PXE_BASE_CODE_MODE *Mode;
PXEBC_DHCP4_PACKET_CACHE *Cache4;
PXEBC_VENDOR_OPTION *VendorOpt;
PXEBC_BOOT_SVR_ENTRY *Entry;
BOOLEAN IsFound;
EFI_PXE_BASE_CODE_DISCOVER_INFO *Info;
UINT16 Index;
Mode = Private->PxeBc.Mode;
Info = *DiscoverInfo;
if (Mode->UsingIpv6) {
Info->IpCnt = 1;
Info->UseUCast = TRUE;
Info->SrvList[0].Type = Type;
Info->SrvList[0].AcceptAnyResponse = FALSE;
//
// There is no vendor options specified in DHCPv6, so take BootFileUrl in the last cached packet.
//
CopyMem (&Info->SrvList[0].IpAddr, &Private->ServerIp, sizeof (EFI_IP_ADDRESS));
*SrvList = Info->SrvList;
} else {
Entry = NULL;
IsFound = FALSE;
Cache4 = (Mode->ProxyOfferReceived) ? &Private->ProxyOffer.Dhcp4 : &Private->DhcpAck.Dhcp4;
VendorOpt = &Cache4->VendorOpt;
if (!Mode->DhcpAckReceived || !IS_VALID_DISCOVER_VENDOR_OPTION (VendorOpt->BitMap)) {
//
// Address is not acquired or no discovery options.
//
return EFI_INVALID_PARAMETER;
}
//
// Parse the boot server entry from the vendor option in the last cached packet.
//
Info->UseMCast = (BOOLEAN) !IS_DISABLE_MCAST_DISCOVER (VendorOpt->DiscoverCtrl);
Info->UseBCast = (BOOLEAN) !IS_DISABLE_BCAST_DISCOVER (VendorOpt->DiscoverCtrl);
Info->MustUseList = (BOOLEAN)IS_ENABLE_USE_SERVER_LIST (VendorOpt->DiscoverCtrl);
Info->UseUCast = (BOOLEAN)IS_VALID_BOOT_SERVERS (VendorOpt->BitMap);
if (Info->UseMCast) {
//
// Get the multicast discover ip address from vendor option if has.
//
CopyMem (&Info->ServerMCastIp.v4, &VendorOpt->DiscoverMcastIp, sizeof (EFI_IPv4_ADDRESS));
}
Info->IpCnt = 0;
if (Info->UseUCast) {
Entry = VendorOpt->BootSvr;
while (((UINT8)(Entry - VendorOpt->BootSvr)) < VendorOpt->BootSvrLen) {
if (Entry->Type == HTONS (Type)) {
IsFound = TRUE;
break;
}
Entry = GET_NEXT_BOOT_SVR_ENTRY (Entry);
}
if (!IsFound) {
return EFI_DEVICE_ERROR;
}
Info->IpCnt = Entry->IpCnt;
if (Info->IpCnt >= 1) {
*DiscoverInfo = AllocatePool (sizeof (*Info) + (Info->IpCnt - 1) * sizeof (**SrvList));
if (*DiscoverInfo == NULL) {
return EFI_OUT_OF_RESOURCES;
}
CopyMem (*DiscoverInfo, Info, sizeof (*Info));
Info = *DiscoverInfo;
}
for (Index = 0; Index < Info->IpCnt; Index++) {
CopyMem (&Info->SrvList[Index].IpAddr, &Entry->IpAddr[Index], sizeof (EFI_IPv4_ADDRESS));
Info->SrvList[Index].AcceptAnyResponse = !Info->MustUseList;
Info->SrvList[Index].Type = NTOHS (Entry->Type);
}
}
*BootEntry = Entry;
*SrvList = Info->SrvList;
}
return EFI_SUCCESS;
}
/**
Build the discover packet and send out for boot server.
@param[in] Private Pointer to PxeBc private data.
@param[in] Type PxeBc option boot item type.
@param[in] Layer Pointer to option boot item layer.
@param[in] UseBis Use BIS or not.
@param[in] DestIp Pointer to the destination address.
@param[in] IpCount The count of the server address.
@param[in] SrvList Pointer to the server address list.
@retval EFI_SUCCESS Successfully discovered boot file.
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource.
@retval EFI_NOT_FOUND Can't get the PXE reply packet.
@retval Others Failed to discover boot file.
**/
EFI_STATUS
PxeBcDiscoverBootServer (
IN PXEBC_PRIVATE_DATA *Private,
IN UINT16 Type,
IN UINT16 *Layer,
IN BOOLEAN UseBis,
IN EFI_IP_ADDRESS *DestIp,
IN UINT16 IpCount,
IN EFI_PXE_BASE_CODE_SRVLIST *SrvList
)
{
if (Private->PxeBc.Mode->UsingIpv6) {
return PxeBcDhcp6Discover (
Private,
Type,
Layer,
UseBis,
DestIp
);
} else {
return PxeBcDhcp4Discover (
Private,
Type,
Layer,
UseBis,
DestIp,
IpCount,
SrvList
);
}
}
/**
Discover all the boot information for boot file.
@param[in, out] Private Pointer to PxeBc private data.
@param[out] BufferSize Size of the boot file to be downloaded.
@retval EFI_SUCCESS Successfully obtained all the boot information .
@retval EFI_BUFFER_TOO_SMALL The buffer size is not enough for boot file.
@retval EFI_ABORTED User cancel current operation.
@retval Others Failed to parse out the boot information.
**/
EFI_STATUS
PxeBcDiscoverBootFile (
IN OUT PXEBC_PRIVATE_DATA *Private,
OUT UINT64 *BufferSize
)
{
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
EFI_PXE_BASE_CODE_MODE *Mode;
EFI_STATUS Status;
UINT16 Type;
UINT16 Layer;
BOOLEAN UseBis;
PxeBc = &Private->PxeBc;
Mode = PxeBc->Mode;
Type = EFI_PXE_BASE_CODE_BOOT_TYPE_BOOTSTRAP;
Layer = EFI_PXE_BASE_CODE_BOOT_LAYER_INITIAL;
//
// Start D.O.R.A/S.A.R.R exchange to acquire station ip address and
// other pxe boot information.
//
Status = PxeBc->Dhcp (PxeBc, TRUE);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Select a boot server from boot server list.
//
Status = PxeBcSelectBootPrompt (Private);
if (Status == EFI_SUCCESS) {
//
// Choose by user's input.
//
Status = PxeBcSelectBootMenu (Private, &Type, FALSE);
} else if (Status == EFI_TIMEOUT) {
//
// Choose by default item.
//
Status = PxeBcSelectBootMenu (Private, &Type, TRUE);
}
if (!EFI_ERROR (Status)) {
if (Type == EFI_PXE_BASE_CODE_BOOT_TYPE_BOOTSTRAP) {
//
// Local boot(PXE bootstrap server) need abort
//
return EFI_ABORTED;
}
//
// Start to discover the boot server to get (m)tftp server ip address, bootfile
// name and bootfile size.
//
UseBis = (BOOLEAN)(Mode->BisSupported && Mode->BisDetected);
Status = PxeBc->Discover (PxeBc, Type, &Layer, UseBis, NULL);
if (EFI_ERROR (Status)) {
return Status;
}
if (Mode->PxeReplyReceived && !Mode->ProxyOfferReceived) {
//
// Some network boot loader only search the packet in Mode.ProxyOffer to get its server
// IP address, so we need to store a copy of Mode.PxeReply packet into Mode.ProxyOffer.
//
if (Mode->UsingIpv6) {
CopyMem (
&Mode->ProxyOffer.Dhcpv6,
&Mode->PxeReply.Dhcpv6,
Private->PxeReply.Dhcp6.Packet.Ack.Length
);
} else {
CopyMem (
&Mode->ProxyOffer.Dhcpv4,
&Mode->PxeReply.Dhcpv4,
Private->PxeReply.Dhcp4.Packet.Ack.Length
);
}
Mode->ProxyOfferReceived = TRUE;
}
}
//
// Parse the boot information.
//
if (Mode->UsingIpv6) {
Status = PxeBcDhcp6BootInfo (Private, BufferSize);
} else {
Status = PxeBcDhcp4BootInfo (Private, BufferSize);
}
return Status;
}
/**
Install PxeBaseCodeCallbackProtocol if not installed before.
@param[in, out] Private Pointer to PxeBc private data.
@param[out] NewMakeCallback If TRUE, it is a new callback.
Otherwise, it is not new callback.
@retval EFI_SUCCESS PxeBaseCodeCallbackProtocol installed successfully.
@retval Others Failed to install PxeBaseCodeCallbackProtocol.
**/
EFI_STATUS
PxeBcInstallCallback (
IN OUT PXEBC_PRIVATE_DATA *Private,
OUT BOOLEAN *NewMakeCallback
)
{
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
EFI_STATUS Status;
//
// Check whether PxeBaseCodeCallbackProtocol already installed.
//
PxeBc = &Private->PxeBc;
Status = gBS->HandleProtocol (
Private->Mode.UsingIpv6 ? Private->Ip6Nic->Controller : Private->Ip4Nic->Controller,
&gEfiPxeBaseCodeCallbackProtocolGuid,
(VOID **)&Private->PxeBcCallback
);
if (Status == EFI_UNSUPPORTED) {
CopyMem (
&Private->LoadFileCallback,
&gPxeBcCallBackTemplate,
sizeof (EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL)
);
//
// Install a default callback if user didn't offer one.
//
Status = gBS->InstallProtocolInterface (
Private->Mode.UsingIpv6 ? &Private->Ip6Nic->Controller : &Private->Ip4Nic->Controller,
&gEfiPxeBaseCodeCallbackProtocolGuid,
EFI_NATIVE_INTERFACE,
&Private->LoadFileCallback
);
(*NewMakeCallback) = (BOOLEAN)(Status == EFI_SUCCESS);
Status = PxeBc->SetParameters (PxeBc, NULL, NULL, NULL, NULL, NewMakeCallback);
if (EFI_ERROR (Status)) {
PxeBc->Stop (PxeBc);
return Status;
}
}
return EFI_SUCCESS;
}
/**
Uninstall PxeBaseCodeCallbackProtocol.
@param[in] Private Pointer to PxeBc private data.
@param[in] NewMakeCallback If TRUE, it is a new callback.
Otherwise, it is not new callback.
**/
VOID
PxeBcUninstallCallback (
IN PXEBC_PRIVATE_DATA *Private,
IN BOOLEAN NewMakeCallback
)
{
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
PxeBc = &Private->PxeBc;
if (NewMakeCallback) {
NewMakeCallback = FALSE;
PxeBc->SetParameters (PxeBc, NULL, NULL, NULL, NULL, &NewMakeCallback);
gBS->UninstallProtocolInterface (
Private->Mode.UsingIpv6 ? Private->Ip6Nic->Controller : Private->Ip4Nic->Controller,
&gEfiPxeBaseCodeCallbackProtocolGuid,
&Private->LoadFileCallback
);
}
}
/**
Download one of boot file in the list, and it's special for IPv6.
@param[in] Private Pointer to PxeBc private data.
@param[in, out] BufferSize Size of user buffer for input;
required buffer size for output.
@param[in] Buffer Pointer to user buffer.
@retval EFI_SUCCESS Read one of boot file in the list successfully.
@retval EFI_BUFFER_TOO_SMALL The buffer size is not enough for boot file.
@retval EFI_NOT_FOUND There is no proper boot file available.
@retval Others Failed to download boot file in the list.
**/
EFI_STATUS
PxeBcReadBootFileList (
IN PXEBC_PRIVATE_DATA *Private,
IN OUT UINT64 *BufferSize,
IN VOID *Buffer OPTIONAL
)
{
EFI_STATUS Status;
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
PxeBc = &Private->PxeBc;
//
// Try to download the boot file if everything is ready.
//
if (Buffer != NULL) {
Status = PxeBc->Mtftp (
PxeBc,
EFI_PXE_BASE_CODE_TFTP_READ_FILE,
Buffer,
FALSE,
BufferSize,
&Private->BlockSize,
&Private->ServerIp,
Private->BootFileName,
NULL,
FALSE
);
} else {
Status = EFI_BUFFER_TOO_SMALL;
}
return Status;
}
/**
Load boot file into user buffer.
@param[in] Private Pointer to PxeBc private data.
@param[in, out] BufferSize Size of user buffer for input;
required buffer size for output.
@param[in] Buffer Pointer to user buffer.
@retval EFI_SUCCESS Get all the boot information successfully.
@retval EFI_BUFFER_TOO_SMALL The buffer size is not enough for boot file.
@retval EFI_ABORTED User cancelled the current operation.
@retval Others Failed to parse out the boot information.
**/
EFI_STATUS
PxeBcLoadBootFile (
IN PXEBC_PRIVATE_DATA *Private,
IN OUT UINTN *BufferSize,
IN VOID *Buffer OPTIONAL
)
{
BOOLEAN NewMakeCallback;
UINT64 RequiredSize;
UINT64 CurrentSize;
EFI_STATUS Status;
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
EFI_PXE_BASE_CODE_MODE *PxeBcMode;
NewMakeCallback = FALSE;
PxeBc = &Private->PxeBc;
PxeBcMode = &Private->Mode;
CurrentSize = *BufferSize;
RequiredSize = 0;
//
// Install pxebc callback protocol if hasn't been installed yet.
//
Status = PxeBcInstallCallback (Private, &NewMakeCallback);
if (EFI_ERROR (Status)) {
return Status;
}
if (Private->BootFileSize == 0) {
//
// Discover the boot information about the bootfile if hasn't.
//
Status = PxeBcDiscoverBootFile (Private, &RequiredSize);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
if (PXEBC_IS_SIZE_OVERFLOWED (RequiredSize)) {
//
// It's error if the required buffer size is beyond the system scope.
//
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
} else if (RequiredSize > 0) {
//
// Get the right buffer size of the bootfile required.
//
if ((CurrentSize < RequiredSize) || (Buffer == NULL)) {
//
// It's buffer too small if the size of user buffer is smaller than the required.
//
CurrentSize = RequiredSize;
Status = EFI_BUFFER_TOO_SMALL;
goto ON_EXIT;
}
CurrentSize = RequiredSize;
} else if ((RequiredSize == 0) && PxeBcMode->UsingIpv6) {
//
// Try to download another bootfile in list if failed to get the filesize of the last one.
// It's special for the case of IPv6.
//
Status = PxeBcReadBootFileList (Private, &CurrentSize, Buffer);
goto ON_EXIT;
}
} else if ((CurrentSize < Private->BootFileSize) || (Buffer == NULL)) {
//
// It's buffer too small if the size of user buffer is smaller than the required.
//
CurrentSize = Private->BootFileSize;
Status = EFI_BUFFER_TOO_SMALL;
goto ON_EXIT;
}
//
// Begin to download the bootfile if everything is ready.
//
AsciiPrint ("\n Downloading NBP file...\n");
if (PxeBcMode->UsingIpv6) {
Status = PxeBcReadBootFileList (
Private,
&CurrentSize,
Buffer
);
} else {
Status = PxeBc->Mtftp (
PxeBc,
EFI_PXE_BASE_CODE_TFTP_READ_FILE,
Buffer,
FALSE,
&CurrentSize,
&Private->BlockSize,
&Private->ServerIp,
Private->BootFileName,
NULL,
FALSE
);
}
ON_EXIT:
*BufferSize = (UINTN)CurrentSize;
PxeBcUninstallCallback (Private, NewMakeCallback);
if (Status == EFI_SUCCESS) {
AsciiPrint ("\n NBP file downloaded successfully.\n");
return EFI_SUCCESS;
} else if ((Status == EFI_BUFFER_TOO_SMALL) && (Buffer != NULL)) {
AsciiPrint ("\n PXE-E05: Buffer size is smaller than the requested file.\n");
} else if (Status == EFI_DEVICE_ERROR) {
AsciiPrint ("\n PXE-E07: Network device error.\n");
} else if (Status == EFI_OUT_OF_RESOURCES) {
AsciiPrint ("\n PXE-E09: Could not allocate I/O buffers.\n");
} else if (Status == EFI_NO_MEDIA) {
AsciiPrint ("\n PXE-E12: Could not detect network connection.\n");
} else if (Status == EFI_NO_RESPONSE) {
AsciiPrint ("\n PXE-E16: No valid offer received.\n");
} else if (Status == EFI_TIMEOUT) {
AsciiPrint ("\n PXE-E18: Server response timeout.\n");
} else if (Status == EFI_ABORTED) {
AsciiPrint ("\n PXE-E21: Remote boot cancelled.\n");
} else if (Status == EFI_ICMP_ERROR) {
AsciiPrint ("\n PXE-E22: Client received ICMP error from server.\n");
} else if (Status == EFI_TFTP_ERROR) {
AsciiPrint ("\n PXE-E23: Client received TFTP error from server.\n");
} else if (Status == EFI_NOT_FOUND) {
AsciiPrint ("\n PXE-E53: No boot filename received.\n");
} else if (Status != EFI_BUFFER_TOO_SMALL) {
AsciiPrint ("\n PXE-E99: Unexpected network error.\n");
}
return Status;
}
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