Thomas, I think it would make this module simpler if you just use the 64-bit variant.
Mike -----Original Message----- From: Palmer, Thomas [mailto:thomas.pal...@hpe.com] Sent: Tuesday, October 06, 2015 11:00 AM To: Kinney, Michael D; edk2-devel@lists.01.org Subject: RE: [edk2] [PATCH] Pkg-Module: Integrate new RngLib into RngDxe Mike, Thanks for your response. I was trying to preserve the previous code as much as possible, so I did not rename the Word functions. Are you suggesting that I can remove the "Word" functions entirely and just use the 64 variants? If so, I'll refactor my patch accordingly. Thomas -----Original Message----- From: Kinney, Michael D [mailto:michael.d.kin...@intel.com] Sent: Tuesday, October 6, 2015 12:56 PM To: Palmer, Thomas <thomas.pal...@hpe.com>; edk2-devel@lists.01.org; Kinney, Michael D <michael.d.kin...@intel.com> Subject: RE: [edk2] [PATCH] Pkg-Module: Integrate new RngLib into RngDxe Thomas, In other EDK II functions, we use the name "Uintn" instead of "Word" for a function that returns a value that is the natural size of the executing CPU. Also, I do not think you need the internal work function to generate a natural sized random number. Both IA32 and X64 versions the BaseLib support the AsmRdRand64() function. Your implementation can always do work 64-bits at a time using just AsmRdRand64(). Mike -----Original Message----- From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of Thomas Palmer Sent: Tuesday, October 06, 2015 9:38 AM To: edk2-devel@lists.01.org Subject: [edk2] [PATCH] Pkg-Module: Integrate new RngLib into RngDxe Use the new RngLib to provide the IA32/X64 random data for RngDxe. Remove x86 specific functions from RdRand files. Clean up files in RngDxe/IA32 and RngDxe/X64 that are subsumed by files in BaseRngLib. A key piece to this change was creating a RdRandWord and RdRandGetWords functions that could work for both IA32 and X64 builds. The RngLib provides functions to get 16,32, and 64 bit random values, but RngDxe uses RdRandWord to get a UINTN value. I use sizeof (UINTN) to determine when to use GetRandomNumber32 or GetRandomNumber64 Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Thomas Palmer <thomas.pal...@hpe.com> --- .../RngDxe/IA32/AsmRdRand.asm | 67 -------- .../RandomNumberGenerator/RngDxe/IA32/GccRdRand.c | 69 -------- SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.c | 173 +++++--------------- SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.h | 115 +------------ SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c | 9 +- .../RandomNumberGenerator/RngDxe/RngDxe.inf | 14 +- .../RandomNumberGenerator/RngDxe/X64/AsmRdRand.asm | 83 ---------- .../RandomNumberGenerator/RngDxe/X64/GccRdRand.c | 95 ----------- SecurityPkg/SecurityPkg.dsc | 3 + 9 files changed, 47 insertions(+), 581 deletions(-) delete mode 100644 SecurityPkg/RandomNumberGenerator/RngDxe/IA32/AsmRdRand.asm delete mode 100644 SecurityPkg/RandomNumberGenerator/RngDxe/IA32/GccRdRand.c delete mode 100644 SecurityPkg/RandomNumberGenerator/RngDxe/X64/AsmRdRand.asm delete mode 100644 SecurityPkg/RandomNumberGenerator/RngDxe/X64/GccRdRand.c diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/AsmRdRand.asm b/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/AsmRdRand.asm deleted file mode 100644 index 37b3830..0000000 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/AsmRdRand.asm +++ /dev/null @@ -1,67 +0,0 @@ -;------------------------------------------------------------------------------ -; -; Copyright (c) 2013, Intel Corporation. All rights reserved.<BR> -; This program and the accompanying materials -; are licensed and made available under the terms and conditions of the BSD License -; which accompanies this distribution. The full text of the license may be found at -; http://opensource.org/licenses/bsd-license.php. -; -; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. -; -; Module Name: -; -; AsmRdRand.Asm -; -; Abstract: -; -; Implementation for 16-, and 32- invocations of RDRAND instruction under 32bit platform. -; -; Notes: -; -; Visual Studio coding practices do not use inline asm since multiple compilers and -; architectures are supported assembler not recognizing rdrand instruction so using DB's. -; -;------------------------------------------------------------------------------ - - .586P - .model flat, C - .code - -;------------------------------------------------------------------------------ -; Generate a 16 bit random number -; Return TRUE if Rand generated successfully, or FALSE if not -; -; BOOLEAN EFIAPI RdRand16Step (UINT16 *Rand); ECX -;------------------------------------------------------------------------------ -RdRand16Step PROC - ; rdrand ax ; generate a 16 bit RN into ax, CF=1 if RN generated ok, otherwise CF=0 - db 0fh, 0c7h, 0f0h ; rdrand r16: "0f c7 /6 ModRM:r/m(w)" - jb rn16_ok ; jmp if CF=1 - xor eax, eax ; reg=0 if CF=0 - ret ; return with failure status -rn16_ok: - mov [ecx], ax - mov eax, 1 - ret -RdRand16Step ENDP - -;------------------------------------------------------------------------------ -; Generate a 32 bit random number -; Return TRUE if Rand generated successfully, or FALSE if not -; -; BOOLEAN EFIAPI RdRand32Step (UINT32 *Rand); ECX -;------------------------------------------------------------------------------ -RdRand32Step PROC - ; rdrand eax ; generate a 32 bit RN into eax, CF=1 if RN generated ok, otherwise CF=0 - db 0fh, 0c7h, 0f0h ; rdrand r32: "0f c7 /6 ModRM:r/m(w)" - jb rn32_ok ; jmp if CF=1 - xor eax, eax ; reg=0 if CF=0 - ret ; return with failure status -rn32_ok: - mov [ecx], eax - mov eax, 1 - ret -RdRand32Step ENDP - - END diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/GccRdRand.c b/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/GccRdRand.c deleted file mode 100644 index f42302a..0000000 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/GccRdRand.c +++ /dev/null @@ -1,69 +0,0 @@ -/** @file - RDRAND Support Routines for GCC environment. - -Copyright (c) 2013, Intel Corporation. All rights reserved.<BR> -This program and the accompanying materials -are licensed and made available under the terms and conditions of the BSD License -which accompanies this distribution. The full text of the license may be found at -http://opensource.org/licenses/bsd-license.php - -THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. - -**/ - -/** - Generates a 16-bit random number through RDRAND instruction. - - @param[out] Rand Buffer pointer to store the random result. - - @retval TRUE RDRAND call was successful. - @retval FALSE Failed attempts to call RDRAND. - -**/ -BOOLEAN -EFIAPI -RdRand16Step ( - OUT UINT16 *Rand - ) -{ - UINT8 Carry; - - // - // Uses byte code for RDRAND instruction, - // in case that GCC version has no direct support on RDRAND assembly. - // - __asm__ __volatile__ ( - ".byte 0x66; .byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1" - :"=a" (*Rand), - "=qm" (Carry) - ); - - return (BOOLEAN) Carry; -} - -/** - Generates a 32-bit random number through RDRAND instruction. - - @param[out] Rand Buffer pointer to store the random result. - - @retval TRUE RDRAND call was successful. - @retval FALSE Failed attempts to call RDRAND. - -**/ -BOOLEAN -EFIAPI -RdRand32Step ( - OUT UINT32 *Rand - ) -{ - UINT8 Carry; - - __asm__ __volatile__ ( - ".byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1" - :"=a" (*Rand), - "=qm" (Carry) - ); - - return (BOOLEAN) Carry; -} \ No newline at end of file diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.c b/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.c index 7e618dc..2a21f7f 100644 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.c +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.c @@ -2,6 +2,7 @@ Support routines for RDRAND instruction access. Copyright (c) 2013, Intel Corporation. All rights reserved.<BR> +(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR> This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at @@ -11,175 +12,75 @@ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. **/ +#include <Library/RngLib.h> #include "RdRand.h" #include "AesCore.h" -// -// Bit mask used to determine if RdRand instruction is supported. -// -#define RDRAND_MASK 0x40000000 - -/** - Determines whether or not RDRAND instruction is supported by the host hardware. - - @retval EFI_SUCCESS RDRAND instruction supported. - @retval EFI_UNSUPPORTED RDRAND instruction not supported. - -**/ -EFI_STATUS -EFIAPI -IsRdRandSupported ( - VOID - ) -{ - EFI_STATUS Status; - UINT32 RegEax; - UINT32 RegEbx; - UINT32 RegEcx; - UINT32 RegEdx; - BOOLEAN IsIntelCpu; - - Status = EFI_UNSUPPORTED; - IsIntelCpu = FALSE; - - // - // Checks whether the current processor is an Intel product by CPUID. - // - AsmCpuid (0, &RegEax, &RegEbx, &RegEcx, &RegEdx); - if ((CompareMem ((CHAR8 *)(&RegEbx), "Genu", 4) == 0) && - (CompareMem ((CHAR8 *)(&RegEdx), "ineI", 4) == 0) && - (CompareMem ((CHAR8 *)(&RegEcx), "ntel", 4) == 0)) { - IsIntelCpu = TRUE; - } - - if (IsIntelCpu) { - // - // Determine RDRAND support by examining bit 30 of the ECX register returned by CPUID. - // A value of 1 indicates that processor supports RDRAND instruction. - // - AsmCpuid (1, 0, 0, &RegEcx, 0); - - if ((RegEcx & RDRAND_MASK) == RDRAND_MASK) { - Status = EFI_SUCCESS; - } - } - - return Status; -} - /** - Calls RDRAND to obtain a 16-bit random number. + Calls RDRAND to request a word-length random number. - @param[out] Rand Buffer pointer to store the random result. + @param[out] Rand Buffer pointer to store the random number. @param[in] NeedRetry Determine whether or not to loop retry. - @retval EFI_SUCCESS RDRAND call was successful. - @retval EFI_NOT_READY Failed attempts to call RDRAND. + @retval EFI_SUCCESS Random word generation succeeded. + @retval EFI_NOT_READY Failed to request random word. **/ EFI_STATUS EFIAPI -RdRand16 ( - OUT UINT16 *Rand, - IN BOOLEAN NeedRetry +RdRandWord ( + OUT UINTN *Rand ) { - UINT32 Index; - UINT32 RetryCount; + BOOLEAN IsRandom; - if (NeedRetry) { - RetryCount = RETRY_LIMIT; + if (sizeof (UINTN) == sizeof (UINT64)) { + IsRandom = GetRandomNumber64 ((UINT64*)Rand); } else { - RetryCount = 1; + IsRandom = GetRandomNumber32 ((UINT32*)Rand); } - // - // Perform a single call to RDRAND, or enter a loop call until RDRAND succeeds. - // - for (Index = 0; Index < RetryCount; Index++) { - if (RdRand16Step (Rand)) { - return EFI_SUCCESS; - } + if (EFI_ERROR (IsRandom)) { + return EFI_NOT_READY; } - - return EFI_NOT_READY; -} - -/** - Calls RDRAND to obtain a 32-bit random number. - - @param[out] Rand Buffer pointer to store the random result. - @param[in] NeedRetry Determine whether or not to loop retry. - @retval EFI_SUCCESS RDRAND call was successful. - @retval EFI_NOT_READY Failed attempts to call RDRAND. - -**/ -EFI_STATUS -EFIAPI -RdRand32 ( - OUT UINT32 *Rand, - IN BOOLEAN NeedRetry - ) -{ - UINT32 Index; - UINT32 RetryCount; - - if (NeedRetry) { - RetryCount = RETRY_LIMIT; - } else { - RetryCount = 1; - } - - // - // Perform a single call to RDRAND, or enter a loop call until RDRAND succeeds. - // - for (Index = 0; Index < RetryCount; Index++) { - if (RdRand32Step (Rand)) { - return EFI_SUCCESS; - } - } - - return EFI_NOT_READY; + return EFI_SUCCESS; } /** - Calls RDRAND to obtain a 64-bit random number. + Calls RDRAND to request multiple word-length random numbers. - @param[out] Rand Buffer pointer to store the random result. - @param[in] NeedRetry Determine whether or not to loop retry. + @param[in] Length Size of the buffer, in words, to fill with. + @param[out] RandBuffer Pointer to the buffer to store the random result. - @retval EFI_SUCCESS RDRAND call was successful. - @retval EFI_NOT_READY Failed attempts to call RDRAND. + @retval EFI_SUCCESS Random words generation succeeded. + @retval EFI_NOT_READY Failed to request random words. **/ EFI_STATUS EFIAPI -RdRand64 ( - OUT UINT64 *Rand, - IN BOOLEAN NeedRetry +RdRandGetWords ( + IN UINTN Length, + OUT UINTN *RandBuffer ) { + EFI_STATUS Status; UINT32 Index; - UINT32 RetryCount; - if (NeedRetry) { - RetryCount = RETRY_LIMIT; - } else { - RetryCount = 1; - } - - // - // Perform a single call to RDRAND, or enter a loop call until RDRAND succeeds. - // - for (Index = 0; Index < RetryCount; Index++) { - if (RdRand64Step (Rand)) { - return EFI_SUCCESS; + for (Index = 0; Index < Length; Index++) { + // + // Obtain one word-length Random Number with possible retry-loop. + // + Status = RdRandWord (RandBuffer); + if (EFI_ERROR (Status)) { + return Status; } + + RandBuffer++; } - - return EFI_NOT_READY; + + return EFI_SUCCESS; } /** @@ -241,7 +142,7 @@ RdRandGetBytes ( // Obtain a temporary random number for use in the residuals. Failout if retry fails. // if (StartLen > 0) { - Status = RdRandWord ((UINTN *) &TempRand, TRUE); + Status = RdRandWord (&TempRand); if (EFI_ERROR (Status)) { return Status; } @@ -266,7 +167,7 @@ RdRandGetBytes ( // Populate the final mis-aligned block. // if (Residual > 0) { - Status = RdRandWord ((UINTN *)&TempRand, TRUE); + Status = RdRandWord (&TempRand); if (EFI_ERROR (Status)) { return Status; } diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.h b/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.h index 20fd9fb..b9be79a 100644 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.h +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.h @@ -9,6 +9,7 @@ Secure Key technology. Copyright (c) 2013, Intel Corporation. All rights reserved.<BR> +(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR> This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at @@ -34,115 +35,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #define RETRY_LIMIT 10 /** - Determines whether or not RDRAND instruction is supported by the host hardware. - - @retval EFI_SUCCESS RDRAND instruction supported. - @retval EFI_UNSUPPORTED RDRAND instruction not supported. - -**/ -EFI_STATUS -EFIAPI -IsRdRandSupported ( - VOID - ); - -/** - Generates a 16-bit random number through RDRAND instruction. - - @param[out] Rand Buffer pointer to store the random result. - - @retval TRUE RDRAND call was successful. - @retval FALSE Failed attempts to call RDRAND. - -**/ -BOOLEAN -EFIAPI -RdRand16Step ( - OUT UINT16 *Rand - ); - -/** - Generates a 32-bit random number through RDRAND instruction. - - @param[out] Rand Buffer pointer to store the random result. - - @retval TRUE RDRAND call was successful. - @retval FALSE Failed attempts to call RDRAND. - -**/ -BOOLEAN -EFIAPI -RdRand32Step ( - OUT UINT32 *Rand - ); - -/** - Generates a 64-bit random number through RDRAND instruction. - - @param[out] Rand Buffer pointer to store the random result. - - @retval TRUE RDRAND call was successful. - @retval FALSE Failed attempts to call RDRAND. - -**/ -BOOLEAN -EFIAPI -RdRand64Step ( - OUT UINT64 *Rand - ); - -/** - Calls RDRAND to obtain a 16-bit random number. - - @param[out] Rand Buffer pointer to store the random result. - @param[in] NeedRetry Determine whether or not to loop retry. - - @retval EFI_SUCCESS RDRAND call was successful. - @retval EFI_NOT_READY Failed attempts to call RDRAND. - -**/ -EFI_STATUS -EFIAPI -RdRand16 ( - OUT UINT16 *Rand, - IN BOOLEAN NeedRetry - ); - -/** - Calls RDRAND to obtain a 32-bit random number. - - @param[out] Rand Buffer pointer to store the random result. - @param[in] NeedRetry Determine whether or not to loop retry. - - @retval EFI_SUCCESS RDRAND call was successful. - @retval EFI_NOT_READY Failed attempts to call RDRAND. - -**/ -EFI_STATUS -EFIAPI -RdRand32 ( - OUT UINT32 *Rand, - IN BOOLEAN NeedRetry - ); - -/** - Calls RDRAND to obtain a 64-bit random number. - - @param[out] Rand Buffer pointer to store the random result. - @param[in] NeedRetry Determine whether or not to loop retry. - - @retval EFI_SUCCESS RDRAND call was successful. - @retval EFI_NOT_READY Failed attempts to call RDRAND. - -**/ -EFI_STATUS -EFIAPI -RdRand64 ( - OUT UINT64 *Rand, - IN BOOLEAN NeedRetry - ); - -/** Calls RDRAND to request a word-length random number. @param[out] Rand Buffer pointer to store the random number. @@ -155,8 +47,7 @@ RdRand64 ( EFI_STATUS EFIAPI RdRandWord ( - OUT UINTN *Rand, - IN BOOLEAN NeedRetry + OUT UINTN *Rand ); /** @@ -210,4 +101,4 @@ RdRandGenerateEntropy ( OUT UINT8 *Entropy ); -#endif // __RD_RAND_H__ \ No newline at end of file +#endif // __RD_RAND_H__ diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c index 98ef3b3..5c04673 100644 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c @@ -15,6 +15,7 @@ - EFI_RNG_ALGORITHM_X9_31_AES_GUID - Unsupported Copyright (c) 2013, Intel Corporation. All rights reserved.<BR> +(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR> This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at @@ -197,14 +198,6 @@ RngDriverEntry ( EFI_HANDLE Handle; // - // Verify RdRand support on Platform. - // - Status = IsRdRandSupported (); - if (EFI_ERROR (Status)) { - return Status; - } - - // // Install UEFI RNG (Random Number Generator) Protocol // Handle = NULL; diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf index d57c2d8..4d668a1 100644 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf @@ -9,6 +9,7 @@ # Secure Key technology. # # Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR> +# (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR> # This program and the accompanying materials # are licensed and made available under the terms and conditions of the BSD License # which accompanies this distribution. The full text of the license may be found at @@ -41,16 +42,6 @@ AesCore.c AesCore.h -[Sources.IA32] - IA32/RdRandWord.c - IA32/AsmRdRand.asm - IA32/GccRdRand.c | GCC - -[Sources.X64] - X64/RdRandWord.c - X64/AsmRdRand.asm - X64/GccRdRand.c | GCC - [Packages] MdePkg/MdePkg.dec SecurityPkg/SecurityPkg.dec @@ -62,6 +53,7 @@ DebugLib UefiDriverEntryPoint TimerLib + RngLib [Guids] gEfiRngAlgorithmSp80090Ctr256Guid ## SOMETIMES_PRODUCES ## GUID # Unique ID of the algorithm for RNG @@ -77,4 +69,4 @@ XCODE:*_*_*_CC_FLAGS = -mmmx -msse [UserExtensions.TianoCore."ExtraFiles"] - RngDxeExtra.uni \ No newline at end of file + RngDxeExtra.uni diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/X64/AsmRdRand.asm b/SecurityPkg/RandomNumberGenerator/RngDxe/X64/AsmRdRand.asm deleted file mode 100644 index 8a4fe65..0000000 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/X64/AsmRdRand.asm +++ /dev/null @@ -1,83 +0,0 @@ -;------------------------------------------------------------------------------ -; -; Copyright (c) 2013, Intel Corporation. All rights reserved.<BR> -; This program and the accompanying materials -; are licensed and made available under the terms and conditions of the BSD License -; which accompanies this distribution. The full text of the license may be found at -; http://opensource.org/licenses/bsd-license.php. -; -; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. -; -; Module Name: -; -; AsmRdRand.Asm -; -; Abstract: -; -; Implementation for 16-, 32-, and 64-bit invocations of RDRAND instruction under 64bit platform. -; -; Notes: -; -; Visual Studio coding practices do not use inline asm since multiple compilers and -; architectures are supported assembler not recognizing rdrand instruction so using DB's. -; -;------------------------------------------------------------------------------ - - .code - -;------------------------------------------------------------------------------ -; Generate a 16 bit random number -; Return TRUE if Rand generated successfully, or FALSE if not -; -; BOOLEAN EFIAPI RdRand16Step (UINT16 *Rand); RCX -;------------------------------------------------------------------------------ -RdRand16Step PROC - ; rdrand ax ; generate a 16 bit RN into ax, CF=1 if RN generated ok, otherwise CF=0 - db 0fh, 0c7h, 0f0h ; rdrand r16: "0f c7 /6 ModRM:r/m(w)" - jb rn16_ok ; jmp if CF=1 - xor rax, rax ; reg=0 if CF=0 - ret ; return with failure status -rn16_ok: - mov [rcx], ax - mov rax, 1 - ret -RdRand16Step ENDP - -;------------------------------------------------------------------------------ -; Generate a 32 bit random number -; Return TRUE if Rand generated successfully, or FALSE if not -; -; BOOLEAN EFIAPI RdRand32Step (UINT32 *Rand); RCX -;------------------------------------------------------------------------------ -RdRand32Step PROC - ; rdrand eax ; generate a 32 bit RN into eax, CF=1 if RN generated ok, otherwise CF=0 - db 0fh, 0c7h, 0f0h ; rdrand r32: "0f c7 /6 ModRM:r/m(w)" - jb rn32_ok ; jmp if CF=1 - xor rax, rax ; reg=0 if CF=0 - ret ; return with failure status -rn32_ok: - mov [rcx], eax - mov rax, 1 - ret -RdRand32Step ENDP - -;------------------------------------------------------------------------------ -; Generate a 64 bit random number -; Return TRUE if RN generated successfully, or FALSE if not -; -; BOOLEAN EFIAPI RdRand64Step (UINT64 *Random); RCX -;------------------------------------------------------------------------------ -RdRand64Step PROC - ; rdrand rax ; generate a 64 bit RN into rax, CF=1 if RN generated ok, otherwise CF=0 - db 048h, 0fh, 0c7h, 0f0h ; rdrand r64: "REX.W + 0F C7 /6 ModRM:r/m(w)" - jb rn64_ok ; jmp if CF=1 - xor rax, rax ; reg=0 if CF=0 - ret ; return with failure status -rn64_ok: - mov [rcx], rax - mov rax, 1 - ret -RdRand64Step ENDP - - END diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/X64/GccRdRand.c b/SecurityPkg/RandomNumberGenerator/RngDxe/X64/GccRdRand.c deleted file mode 100644 index d28336d..0000000 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/X64/GccRdRand.c +++ /dev/null @@ -1,95 +0,0 @@ -/** @file - RDRAND Support Routines for GCC environment. - -Copyright (c) 2013, Intel Corporation. All rights reserved.<BR> -This program and the accompanying materials -are licensed and made available under the terms and conditions of the BSD License -which accompanies this distribution. The full text of the license may be found at -http://opensource.org/licenses/bsd-license.php - -THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. - -**/ - -/** - Generates a 16-bit random number through RDRAND instruction. - - @param[out] Rand Buffer pointer to store the random result. - - @retval TRUE RDRAND call was successful. - @retval FALSE Failed attempts to call RDRAND. - -**/ -BOOLEAN -EFIAPI -RdRand16Step ( - OUT UINT16 *Rand - ) -{ - UINT8 Carry; - - // - // Uses byte code for RDRAND instruction, - // in case that GCC version has no direct support on RDRAND assembly. - // - __asm__ __volatile__ ( - ".byte 0x66; .byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1" - :"=a" (*Rand), - "=qm" (Carry) - ); - - return (BOOLEAN) Carry; -} - -/** - Generates a 32-bit random number through RDRAND instruction. - - @param[out] Rand Buffer pointer to store the random result. - - @retval TRUE RDRAND call was successful. - @retval FALSE Failed attempts to call RDRAND. - -**/ -BOOLEAN -EFIAPI -RdRand32Step ( - OUT UINT32 *Rand - ) -{ - UINT8 Carry; - - __asm__ __volatile__ ( - ".byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1" - :"=a" (*Rand), - "=qm" (Carry) - ); - - return (BOOLEAN) Carry; -} - -/** - Generates a 64-bit random number through RDRAND instruction. - - @param[out] Rand Buffer pointer to store the random result. - - @retval TRUE RDRAND call was successful. - @retval FALSE Failed attempts to call RDRAND. - -**/ -BOOLEAN -EFIAPI -RdRand64Step ( - OUT UINT64 *Rand - ) -{ - UINT8 Carry; - - __asm__ __volatile__ ( - ".byte 0x48; .byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1" - :"=a" (*Rand), - "=qm" (Carry) - ); - - return (BOOLEAN) Carry; -} diff --git a/SecurityPkg/SecurityPkg.dsc b/SecurityPkg/SecurityPkg.dsc index 6e2ca5c..0908b26 100644 --- a/SecurityPkg/SecurityPkg.dsc +++ b/SecurityPkg/SecurityPkg.dsc @@ -2,6 +2,7 @@ # Security Module Package for All Architectures. # # Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR> +# (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR> # This program and the accompanying materials # are licensed and made available under the terms and conditions of the BSD License # which accompanies this distribution. The full text of the license may be found at @@ -61,6 +62,7 @@ TcgPpVendorLib|SecurityPkg/Library/TcgPpVendorLibNull/TcgPpVendorLibNull.inf Tcg2PpVendorLib|SecurityPkg/Library/Tcg2PpVendorLibNull/Tcg2PpVendorLibNull.inf TrEEPpVendorLib|SecurityPkg/Library/TrEEPpVendorLibNull/TrEEPpVendorLibNull.inf + RngLib|MdePkg/Library/BaseRngLib/BaseRngLib.inf [LibraryClasses.common.PEIM] PeimEntryPoint|MdePkg/Library/PeimEntryPoint/PeimEntryPoint.inf @@ -74,6 +76,7 @@ Tpm12DeviceLib|SecurityPkg/Library/Tpm12DeviceLibDTpm/Tpm12DeviceLibDTpm.inf Tpm2DeviceLib|SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2DeviceLibDTpm.inf Tcg2PhysicalPresenceLib|SecurityPkg/Library/PeiTcg2PhysicalPresenceLib/PeiTcg2PhysicalPresenceLib.inf + RngLib|MdePkg/Library/BaseRngLib/BaseRngLib.inf [LibraryClasses.common.DXE_DRIVER] HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf -- 1.7.9.5 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
