WinNtBusDriverBindingSupported,
WinNtBusDriverBindingStart,
WinNtBusDriverBindingStop,
0xa,
NULL,
NULL
};
#define NT_PCD_ARRAY_SIZE (sizeof(mPcdEnvironment)/sizeof(NT_PCD_ENTRY))
//
// Table to map NT Environment variable to the GUID that should be in
// device path.
//
NT_PCD_ENTRY mPcdEnvironment[] = {
PcdToken(PcdWinNtConsole), &gEfiWinNtConsoleGuid,
PcdToken(PcdWinNtGop), &gEfiWinNtGopGuid,
PcdToken(PcdWinNtSerialPort), &gEfiWinNtSerialPortGuid,
PcdToken(PcdWinNtFileSystem), &gEfiWinNtFileSystemGuid,
PcdToken(PcdWinNtVirtualDisk), &gEfiWinNtVirtualDisksGuid,
PcdToken(PcdWinNtPhysicalDisk), &gEfiWinNtPhysicalDisksGuid
};
/**
The user Entry Point for module WinNtBusDriver. The user code starts with this function.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval other Some error occurs when executing this entry point.
/**
Extraction handler tries to extract raw data from the input guided section.
It also does authentication check for RSA 2048 SHA 256 signature in the input guided section.
It first checks whether the input guid section is supported.
If not, EFI_INVALID_PARAMETER will return.
@param InputSection Buffer containing the input GUIDed section to be processed.
@param OutputBuffer Buffer to contain the output raw data allocated by the caller.
@param ScratchBuffer A pointer to a caller-allocated buffer for function internal use.
@param AuthenticationStatus A pointer to a caller-allocated UINT32 that indicates the
authentication status of the output buffer.
@retval EFI_SUCCESS Section Data and Auth Status is extracted successfully.
@retval EFI_INVALID_PARAMETER The GUID in InputSection does not match this instance guid.
**/
EFI_STATUS
EFIAPI
Rsa2048Sha256GuidedSectionHandler (
IN CONST VOID *InputSection,
OUT VOID **OutputBuffer,
IN VOID *ScratchBuffer, OPTIONAL
OUT UINT32 *AuthenticationStatus
)
{
EFI_STATUS Status;
UINT32 OutputBufferSize;
VOID *DummyInterface;
EFI_CERT_BLOCK_RSA_2048_SHA256 *CertBlockRsa2048Sha256;
BOOLEAN CryptoStatus;
UINT8 Digest[SHA256_DIGEST_SIZE];
UINT8 *PublicKey;
UINTN PublicKeyBufferSize;
VOID *HashContext;
VOID *Rsa;
HashContext = NULL;
Rsa = NULL;
if (IS_SECTION2 (InputSection)) {
//
// Check whether the input guid section is recognized.
//
if (!CompareGuid (
&gEfiCertTypeRsa2048Sha256Guid,
&(((EFI_GUID_DEFINED_SECTION2 *)InputSection)->SectionDefinitionGuid))) {
return EFI_INVALID_PARAMETER;
}
//
// Get the RSA 2048 SHA 256 information.
//
CertBlockRsa2048Sha256 = &((RSA_2048_SHA_256_SECTION2_HEADER *) InputSection)->CertBlockRsa2048Sha256;
OutputBufferSize = SECTION2_SIZE (InputSection) - sizeof (RSA_2048_SHA_256_SECTION2_HEADER);
if ((((EFI_GUID_DEFINED_SECTION *)InputSection)->Attributes & EFI_GUIDED_SECTION_PROCESSING_REQUIRED) != 0) {
PERF_START (NULL, "RsaCopy", "DXE", 0);
CopyMem (*OutputBuffer, (UINT8 *)InputSection + sizeof (RSA_2048_SHA_256_SECTION2_HEADER), OutputBufferSize);
PERF_END (NULL, "RsaCopy", "DXE", 0);
} else {
*OutputBuffer = (UINT8 *)InputSection + sizeof (RSA_2048_SHA_256_SECTION2_HEADER);
}
//
// Implicitly RSA 2048 SHA 256 GUIDed section should have STATUS_VALID bit set
//
ASSERT ((((EFI_GUID_DEFINED_SECTION2 *)InputSection)->Attributes & EFI_GUIDED_SECTION_AUTH_STATUS_VALID) != 0);
*AuthenticationStatus = EFI_AUTH_STATUS_IMAGE_SIGNED;
} else {
//
// Check whether the input guid section is recognized.
//
if (!CompareGuid (
&gEfiCertTypeRsa2048Sha256Guid,
&(((EFI_GUID_DEFINED_SECTION *)InputSection)->SectionDefinitionGuid))) {
return EFI_INVALID_PARAMETER;
}
//
// Get the RSA 2048 SHA 256 information.
//
CertBlockRsa2048Sha256 = &((RSA_2048_SHA_256_SECTION_HEADER *)InputSection)->CertBlockRsa2048Sha256;
OutputBufferSize = SECTION_SIZE (InputSection) - sizeof (RSA_2048_SHA_256_SECTION_HEADER);
if ((((EFI_GUID_DEFINED_SECTION *)InputSection)->Attributes & EFI_GUIDED_SECTION_PROCESSING_REQUIRED) != 0) {
PERF_START (NULL, "RsaCopy", "DXE", 0);
CopyMem (*OutputBuffer, (UINT8 *)InputSection + sizeof (RSA_2048_SHA_256_SECTION_HEADER), OutputBufferSize);
PERF_END (NULL, "RsaCopy", "DXE", 0);
} else {
*OutputBuffer = (UINT8 *)InputSection + sizeof (RSA_2048_SHA_256_SECTION_HEADER);
}
//
// Implicitly RSA 2048 SHA 256 GUIDed section should have STATUS_VALID bit set
//
ASSERT ((((EFI_GUID_DEFINED_SECTION *) InputSection)->Attributes & EFI_GUIDED_SECTION_AUTH_STATUS_VALID) != 0);
*AuthenticationStatus = EFI_AUTH_STATUS_IMAGE_SIGNED;
}
//
// Check whether there exists EFI_SECURITY_POLICY_PROTOCOL_GUID.
//
Status = gBS->LocateProtocol (&gEfiSecurityPolicyProtocolGuid, NULL, &DummyInterface);
if (!EFI_ERROR (Status)) {
//
// If SecurityPolicy Protocol exist, AUTH platform override bit is set.
//
*AuthenticationStatus |= EFI_AUTH_STATUS_PLATFORM_OVERRIDE;
return EFI_SUCCESS;
}
//
// All paths from here return EFI_SUCESS and result is returned in AuthenticationStatus
//
Status = EFI_SUCCESS;
//
// Fail if the HashType is not SHA 256
//
if (!CompareGuid (&gEfiHashAlgorithmSha256Guid, &CertBlockRsa2048Sha256->HashType)) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: HASH type of section is not supported\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
//
// Allocate hash context buffer required for SHA 256
//
HashContext = AllocatePool (Sha256GetContextSize ());
if (HashContext == NULL) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: Can not allocate hash context\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
//
// Hash public key from data payload with SHA256.
//
ZeroMem (Digest, SHA256_DIGEST_SIZE);
CryptoStatus = Sha256Init (HashContext);
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: Sha256Init() failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
CryptoStatus = Sha256Update (HashContext, &CertBlockRsa2048Sha256->PublicKey, sizeof(CertBlockRsa2048Sha256->PublicKey));
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: Sha256Update() failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
CryptoStatus = Sha256Final (HashContext, Digest);
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: Sha256Final() failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
//
// Fail if the PublicKey is not one of the public keys in PcdRsa2048Sha256PublicKeyBuffer
//
PublicKey = (UINT8 *)PcdGetPtr (PcdRsa2048Sha256PublicKeyBuffer);
DEBUG ((DEBUG_VERBOSE, "DxePcdRsa2048Sha256: PublicKeyBuffer = %p\n", PublicKey));
ASSERT (PublicKey != NULL);
DEBUG ((DEBUG_VERBOSE, "DxePcdRsa2048Sha256: PublicKeyBuffer Token = %08x\n", PcdToken (PcdRsa2048Sha256PublicKeyBuffer)));
PublicKeyBufferSize = LibPcdGetExSize (&gEfiSecurityPkgTokenSpaceGuid, PcdToken (PcdRsa2048Sha256PublicKeyBuffer));
DEBUG ((DEBUG_VERBOSE, "DxePcdRsa2048Sha256: PublicKeyBuffer Size = %08x\n", PublicKeyBufferSize));
ASSERT ((PublicKeyBufferSize % SHA256_DIGEST_SIZE) == 0);
CryptoStatus = FALSE;
while (PublicKeyBufferSize != 0) {
if (CompareMem (Digest, PublicKey, SHA256_DIGEST_SIZE) == 0) {
CryptoStatus = TRUE;
break;
}
PublicKey = PublicKey + SHA256_DIGEST_SIZE;
PublicKeyBufferSize = PublicKeyBufferSize - SHA256_DIGEST_SIZE;
}
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: Public key in section is not supported\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
//
// Generate & Initialize RSA Context.
//
Rsa = RsaNew ();
if (Rsa == NULL) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: RsaNew() failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
//
// Set RSA Key Components.
// NOTE: Only N and E are needed to be set as RSA public key for signature verification.
//
CryptoStatus = RsaSetKey (Rsa, RsaKeyN, CertBlockRsa2048Sha256->PublicKey, sizeof(CertBlockRsa2048Sha256->PublicKey));
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: RsaSetKey(RsaKeyN) failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
CryptoStatus = RsaSetKey (Rsa, RsaKeyE, mRsaE, sizeof (mRsaE));
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: RsaSetKey(RsaKeyE) failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
//
// Hash data payload with SHA256.
//
ZeroMem (Digest, SHA256_DIGEST_SIZE);
CryptoStatus = Sha256Init (HashContext);
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: Sha256Init() failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
PERF_START (NULL, "RsaShaData", "DXE", 0);
CryptoStatus = Sha256Update (HashContext, *OutputBuffer, OutputBufferSize);
PERF_END (NULL, "RsaShaData", "DXE", 0);
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: Sha256Update() failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
CryptoStatus = Sha256Final (HashContext, Digest);
if (!CryptoStatus) {
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: Sha256Final() failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
goto Done;
}
//
// Verify the RSA 2048 SHA 256 signature.
//
PERF_START (NULL, "RsaVerify", "DXE", 0);
CryptoStatus = RsaPkcs1Verify (
Rsa,
Digest,
SHA256_DIGEST_SIZE,
CertBlockRsa2048Sha256->Signature,
sizeof (CertBlockRsa2048Sha256->Signature)
);
PERF_END (NULL, "RsaVerify", "DXE", 0);
if (!CryptoStatus) {
//
// If RSA 2048 SHA 256 signature verification fails, AUTH tested failed bit is set.
//
DEBUG ((DEBUG_ERROR, "DxeRsa2048Sha256: RsaPkcs1Verify() failed\n"));
*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
}
Done:
//
// Free allocated resources used to perform RSA 2048 SHA 256 signature verification
//
if (Rsa != NULL) {
RsaFree (Rsa);
}
if (HashContext != NULL) {
FreePool (HashContext);
}
DEBUG ((DEBUG_VERBOSE, "DxeRsa2048Sha256: Status = %r AuthenticationStatus = %08x\n", Status, *AuthenticationStatus));
return Status;
}
UnixBusDriverBindingSupported,
UnixBusDriverBindingStart,
UnixBusDriverBindingStop,
0xa,
NULL,
NULL
};
#define UNIX_PCD_ARRAY_SIZE (sizeof(mPcdEnvironment)/sizeof(UNIX_PCD_ENTRY))
//
// Table to map UNIX Environment variable to the GUID that should be in
// device path.
//
UNIX_PCD_ENTRY mPcdEnvironment[] = {
{PcdToken(PcdUnixConsole), &gEfiUnixConsoleGuid},
{PcdToken(PcdUnixUga), &gEfiUnixUgaGuid},
{PcdToken(PcdUnixGop), &gEfiUnixGopGuid},
{PcdToken(PcdUnixFileSystem), &gEfiUnixFileSystemGuid},
{PcdToken(PcdUnixSerialPort), &gEfiUnixSerialPortGuid},
{PcdToken(PcdUnixVirtualDisk), &gEfiUnixVirtualDisksGuid},
{PcdToken(PcdUnixPhysicalDisk), &gEfiUnixPhysicalDisksGuid},
{PcdToken(PcdUnixCpuModel), &gEfiUnixCPUModelGuid},
{PcdToken(PcdUnixCpuSpeed), &gEfiUnixCPUSpeedGuid},
{PcdToken(PcdUnixMemorySize), &gEfiUnixMemoryGuid},
{PcdToken(PcdUnixNetworkInterface), &gEfiUnixNetworkGuid}
};
VOID *
AllocateMemory (
IN UINTN Size
