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//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2014, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Modules/SecureFlashPkg/FlashUpdate/SecFlashUpdDxe.c 10 3/18/14 3:01p Alexp $
//
// $Revision: 10 $
//
// $Date: 3/18/14 3:01p $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/SecureFlashPkg/FlashUpdate/SecFlashUpdDxe.c $
//
// 10 3/18/14 3:01p Alexp
// set 2014 in file hdr & ftr
//
// 9 5/09/13 10:37a Alexp
// EIP#123379 : Disabling FLASH_LOCK_EVENT_NOTIFY causes build error
//
// 8 10/31/12 1:36p Alexp
// removed #ifdef for CAPSULE_SUPPORTbefore checks for capsule variable.
//
// 7 9/06/12 6:15p Alexp
// EIP#100418: Make SecureFlashPkg build independant from ReFlash-Support
//
// 6 1/06/12 10:37a Alexp
// Streamlined the code for Setup.AutoFlash variable update if FlashUpdate
// is pending
//
// 4 11/17/11 10:02a Alexp
// Use Core 4.6.5.2 provided name AMI_EVENT_FLASH_WRITE_LOCK as GUID
// define for Flash Lock event
//
// 3 11/10/11 4:38p Alexp
// 1. UpdateAutoFlash() updates the AutoFlash Variable installed by
// ReFlash driver in Recovery/Flash Update flows
// 2. Issue FlashReadyToLock Event notification based on the Flash Update
// policy.
//
// 2 7/20/11 7:16p Alexp
// remove dependency on Capsule module
//
// 1 7/01/11 4:39p Alexp
//
//
//**********************************************************************
#include <Token.h>
#include <AmiDxeLib.h>
#include <AmiHobs.h>
#include <FlashUpd.h>
#include <Flash.h>
#if (defined ReFlash_SUPPORT) && (ReFlash_SUPPORT == 1)
#include "ReFlash.h"
#endif
#include "Capsule.h"
//
// Global variables
//
extern EFI_BOOT_SERVICES *pBS;
#if FLASH_LOCK_EVENT_NOTIFY == 1
VOID *gSbHobList = NULL;
static EFI_GUID gHobListGuid = HOB_LIST_GUID;
// Core 4.6.5.2 sources GUID
#ifndef AMI_EVENT_FLASH_WRITE_LOCK
// {49D34AE7-1348-4551-8F71-467D8C0E4EF5}
#define AMI_EVENT_FLASH_WRITE_LOCK \
{ 0x49D34AE7, 0x9454, 0x4551, 0x8F, 0x71, 0x46, 0x7D, 0x8C, 0x0E, 0x4E, 0xF5 }
#endif
#define BDS_CONNECT_DRIVERS_PROTOCOL_GUID \
{ 0x3aa83745, 0x9454, 0x4f7a, 0xa7, 0xc0, 0x90, 0xdb, 0xd0, 0x2f, 0xab, 0x8e }
EFI_GUID gBiosLockEnableEventGuid = AMI_EVENT_FLASH_WRITE_LOCK;
EFI_GUID gBdsConnectDriversProtocolGuid = BDS_CONNECT_DRIVERS_PROTOCOL_GUID;
EFI_EVENT mSecureModEvent;
VOID *mSecureModReg;
#endif //#if FLASH_LOCK_EVENT_NOTIFY == 1
//----------------------------------------------------------------------------
// Function definitions
//----------------------------------------------------------------------------
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: ReadyToLockCallback
//
// Description: ready to Lock Flash part
// Signal a event for ready to lock.
//
// Input: Event - The event that triggered this notification function
// ParentImageHandle - Pointer to the notification functions context
//
// Output: VOID
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
#if FLASH_LOCK_EVENT_NOTIFY == 1
VOID
ReadyToLockCallback (
EFI_EVENT Event,
VOID *ParentImageHandle
)
{
EFI_HANDLE Handle = NULL;
TRACE((-1,"\nSecure Fl Upd: FlashReadyToLock callback\n"));
// Signal Event.....
pBS->InstallProtocolInterface (
&Handle, &gBiosLockEnableEventGuid, EFI_NATIVE_INTERFACE,NULL
);
pBS->UninstallProtocolInterface (
Handle,&gBiosLockEnableEventGuid, NULL
);
//
//Kill the Event
//
pBS->CloseEvent(Event);
}
#endif //#if FLASH_LOCK_EVENT_NOTIFY == 1
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: UpdateAutoFlash
//
// Description: This is the standard EFI driver entry point called for
// Recovery flash module initlaization
// Input: IN EFI_HANDLE ImageHandle - ImageHandle of the loaded driver
// IN EFI_SYSTEM_TABLE SystemTable - Pointer to the System Table
//
// Output: EFI_SUCCESS
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS UpdateAutoFlash ()
{
EFI_STATUS Status;
UINT32 Attributes;
UINTN Size;
#if (defined ReFlash_SUPPORT) && (ReFlash_SUPPORT == 1)
AUTOFLASH AutoFlash;
static EFI_GUID guidReFlash = RECOVERY_FORM_SET_GUID;
#endif //#if (defined ReFlash_SUPPORT) && (ReFlash_SUPPORT == 1)
static EFI_GUID FlashUpdGuid = FLASH_UPDATE_GUID;
static EFI_GUID CapsuleBootModeGuid = EFI_CAPSULE_AMI_GUID;
AMI_FLASH_UPDATE_BLOCK FlashUpdDesc;
// Prep the FlashOp variable
Attributes = 0;
Size = sizeof(AMI_FLASH_UPDATE_BLOCK);
Status = pRS->GetVariable( FLASH_UPDATE_VAR,&FlashUpdGuid,&Attributes,&Size, &FlashUpdDesc);
if(!EFI_ERROR(Status))
{
// Erase Flash Var
pRS->SetVariable (FLASH_UPDATE_VAR,&FlashUpdGuid,Attributes,0,NULL);
// Clear pending Capsule Update Var
// only if FlashOp is pending. We don't want to interfere with other types of Capsule Upd
Size = 0;
if(pRS->GetVariable(CAPSULE_UPDATE_VAR,&CapsuleBootModeGuid, &Attributes, &Size, NULL)==EFI_BUFFER_TOO_SMALL)
pRS->SetVariable(CAPSULE_UPDATE_VAR,&CapsuleBootModeGuid, Attributes, 0, NULL);
#if (defined ReFlash_SUPPORT) && (ReFlash_SUPPORT == 1)
// Update ReFlash parameters
Size = sizeof(AUTOFLASH);
Status = pRS->GetVariable(L"Setup",&guidReFlash, &Attributes, &Size, &AutoFlash);
if(!EFI_ERROR(Status))
{
AutoFlash.UpdateNv = (FlashUpdDesc.ROMSection & (1<<FV_NV)) ? 1 : 0;
AutoFlash.UpdateBb = (FlashUpdDesc.ROMSection & (1<<FV_BB)) ? 1 : 0;
AutoFlash.UpdateMain=(FlashUpdDesc.ROMSection & (1<<FV_MAIN)) ? 1 : 0;
// EC block
#if (defined EC_FIRMWARE_UPDATE_INTERFACE_SUPPORT) && (EC_FIRMWARE_UPDATE_INTERFACE_SUPPORT == 1)
AutoFlash.UpdateEC =(FlashUpdDesc.ROMSection & (1<<ROM_EC)) ? 1 : 0;
#endif
pRS->SetVariable(L"Setup",&guidReFlash, Attributes, sizeof(AUTOFLASH), &AutoFlash);
}
#endif //#if (defined ReFlash_SUPPORT) && (ReFlash_SUPPORT == 1)
}
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: SecFlashUpdDxe_Init
//
// Description: Entry point of Flash Update Policy driver
//
// Input: EFI_HANDLE ImageHandle,
// EFI_SYSTEM_TABLE *SystemTable
//
// Output: EFI_STATUS
//
// Modified:
//
// Referrals:
//
// Notes:
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
SecFlashUpdDxe_Init (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
InitAmiLib(ImageHandle, SystemTable);
Status = UpdateAutoFlash();
///////////////////////////////////////////////////////////////////////////////
//
// Create Flash Lock event.
//
///////////////////////////////////////////////////////////////////////////////
#if FLASH_LOCK_EVENT_NOTIFY == 1
// Get Hob List
gSbHobList = GetEfiConfigurationTable(SystemTable, &gHobListGuid);
if (!gSbHobList)
return EFI_INVALID_PARAMETER;
// Locking SPI before BDS Connect on normal boot
if (((EFI_HOB_HANDOFF_INFO_TABLE*)gSbHobList)->BootMode!=BOOT_IN_RECOVERY_MODE &&
((EFI_HOB_HANDOFF_INFO_TABLE*)gSbHobList)->BootMode!=BOOT_ON_FLASH_UPDATE
)
Status = RegisterProtocolCallback ( &gBdsConnectDriversProtocolGuid, \
ReadyToLockCallback, \
NULL, \
&mSecureModEvent, \
&mSecureModReg );
// Locking SPI after ReFlash(BDS) if in Recoovery/Flash Upd mode
else
Status = CreateReadyToBootEvent ( TPL_CALLBACK,
ReadyToLockCallback,
NULL,
&mSecureModEvent);
ASSERT_EFI_ERROR (Status);
#endif
return Status;
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2014, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
|
