From: "Rebecca Cran" <rebecca@nuviainc.com>
To: Sami Mujawar <sami.mujawar@arm.com>, devel@edk2.groups.io
Cc: Jiewen Yao <jiewen.yao@intel.com>,
Jian J Wang <jian.j.wang@intel.com>,
Michael D Kinney <michael.d.kinney@intel.com>,
Liming Gao <gaoliming@byosoft.com.cn>,
Zhiguang Liu <zhiguang.liu@intel.com>,
Ard Biesheuvel <ardb+tianocore@kernel.org>,
nd@arm.com
Subject: Re: [PATCH 1/3] MdePkg/BaseLib: Add support for ARMv8.5 RNG instructions
Date: Tue, 4 May 2021 15:42:55 -0600 [thread overview]
Message-ID: <8f6f2ab2-c5e8-c4ad-484f-89943d7a0f14@nuviainc.com> (raw)
In-Reply-To: <04dea53e-14e4-fb93-cbe7-0ba68ea08341@arm.com>
On 5/4/21 3:06 PM, Sami Mujawar wrote:
>> +#if defined (MDE_CPU_AARCH64)
>> +
>> +/**
>> + Reads the ID_AA64ISAR0 Register.
>> +
>> + @return The contents of the ID_AA64ISAR0 Register
>> +
>> +**/
>> +UINT64
>> +EFIAPI
>> +ArmReadIdIsar0 (
>> + VOID
>> + );
>> +
> [SAMI] Should this function be part of ArmLib?
> [/SAMI]
It's currently used in BaseRngLib, and since there are other Aarch64
functions in BaseLib I thought it should belong here - especially since
I don't think MdePkg can depend on ArmPkg?
>> diff --git a/MdePkg/Library/BaseLib/BaseLibInternals.h
>> b/MdePkg/Library/BaseLib/BaseLibInternals.h
>> index 6837d67d90cf..4ae79a4e7ab4 100644
>> --- a/MdePkg/Library/BaseLib/BaseLibInternals.h
>> +++ b/MdePkg/Library/BaseLib/BaseLibInternals.h
>> @@ -862,6 +862,12 @@ InternalX86RdRand64 (
>> OUT UINT64 *Rand
>> );
> [SAMI] I can see that the X86RdRand64 functions are implemented in this
> library. However, I am not sure we want ArmRndr() and ArmRndrrs() in
> BaseLib.
> I think these functions should be in BaseRngLib and should not be
> available publicly. The RngLib interface should be used by edk2 modules.
> What do you think?
> [/SAMI]
That makes sense - I'll move them.
--
Rebecca Cran
next prev parent reply other threads:[~2021-05-04 21:42 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-28 20:44 [PATCH 0/3] MdePkg,SecurityPkg: Update BaseRngLib and RngDxe to support ARMv8.5 FEAT_RNG Rebecca Cran
2021-04-28 20:44 ` [PATCH 1/3] MdePkg/BaseLib: Add support for ARMv8.5 RNG instructions Rebecca Cran
2021-04-29 1:08 ` 回复: " gaoliming
2021-05-05 21:02 ` [edk2-devel] " Rebecca Cran
2021-05-04 21:06 ` Sami Mujawar
2021-05-04 21:42 ` Rebecca Cran [this message]
2021-04-28 20:44 ` [PATCH 2/3] MdePkg: Refactor BaseRngLib to support AARCH64 in addition to X86 Rebecca Cran
2021-04-29 1:10 ` 回复: " gaoliming
2021-04-29 3:01 ` [edk2-devel] " Rebecca Cran
2021-05-04 21:09 ` Sami Mujawar
2021-05-05 19:27 ` [edk2-devel] " Rebecca Cran
2021-05-06 21:47 ` Rebecca Cran
2021-04-28 20:44 ` [PATCH 3/3] SecurityPkg: Add support for RngDxe on AARCH64 Rebecca Cran
2021-04-29 1:13 ` 回复: " gaoliming
2021-04-29 15:50 ` [edk2-devel] " Rebecca Cran
2021-04-29 10:35 ` Ard Biesheuvel
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