Hi, Oliver:
Thanks for your answer!
I have tried to get latest uefi code from
https://svn.code.sf.net/p/edk2/code/trunk/edk2, and it compiled successfully.
I aslo boot it with FVP model.
I have a question about bootstrap code:
1. ArmPlatformPkg\ArmVExpressPkg\Scripts\uefi-aarch64-bootstrap
Has these code replaced arm trusted firmware?(
https://github.com/ARM-software/arm-trusted-firmware)
Because I didn't find any arm trusted firmware output msg when running FVP
model.
Best wishes,
-----邮件原件-----
发件人: Olivier Martin [mailto:olivier.mar...@arm.com]
发送时间: 2014年1月15日 20:52
收件人: edk2-devel@lists.sourceforge.net
主题: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
Hi Tiger,
Yes we do not need to patch the BaseTools. I have updated the instructions.
Where did you get the sources from? From Linaro? We do not have the
directory 'ArmPkg/Drivers/AcpiTables' in subversion...
Thanks,
Olivier
> -----Original Message-----
> From: tiger...@viatech.com.cn [mailto:tiger...@viatech.com.cn]
> Sent: 15 January 2014 08:20
> To: edk2-devel@lists.sourceforge.net
> Subject: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
>
> Hi, Oliver:
> Based on this wiki:
> http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=ArmPlat
> formPkg/AArch64#Introduction
>
> 1. I got latest edkii code, and tried to patch BaseTools, but has
> failed patch tip message.
> . edksetup.sh `pwd`/BaseTools
> patch -p1 < ArmPlatformPkg/Documentation/patches/BaseTools-Pending-
> Patches.patch
>
> Does this patch has merged into ekdii's master branch?
> Not need patch it again?
>
> 2. failed to compile ArmVExpress-RTSM-AEMv8Ax4-foundation
> make: *** [/home/lion/ARMv8/UEFI/uefi/Build/ArmVExpress-RTSM-
> AEMv8Ax4-
> foundation/DEBUG_GCC47/AARCH64/ArmPkg/Drivers/AcpiTables/foundation-
> v8/AcpiTables/OUTPUT/Csrt.acpi] Error 1
>
>
> build.py...
> : error 7000: Failed to execute command
> make tbuild [/home/lion/ARMv8/UEFI/uefi/Build/ArmVExpress-RTSM-
> AEMv8Ax4-
> foundation/DEBUG_GCC47/AARCH64/ArmPkg/Drivers/AcpiTables/foundation-
> v8/AcpiTables]
>
>
> build.py...
> : error F002: Failed to build module
>
> /home/lion/ARMv8/UEFI/uefi/ArmPkg/Drivers/AcpiTables/foundation-
> v8/AcpiTables.inf [AARCH64, GCC47, DEBUG]
>
>
> Best wishes,
> -----邮件原件-----
> 发件人: Olivier Martin [mailto:olivier.mar...@arm.com]
> 发送时间: 2014年1月14日 2:36
> 收件人: edk2-devel@lists.sourceforge.net
> 主题: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
>
> Thanks Bhupesh to have replied to the email. Here are some
> clarifications.
>
> We should not mix ARMv8 / AArch64 / AArch32 / ARMv7.
>
> ARMv7 and ARMv8 are the revisions of the ARM Architecture.
> - ARMv7 (version 7) is 32bit only.
> - ARMv8 (version 8) covers 32bit and 64bit ARM Architectures.
>
> - AArch32 and AArch64 are respectively the 32bit and 64bit version of
> ARM
> architecture.
> - AArch32 (defined by ARMv8) has some additions to the 32bit version of
> the
> ARM Architecture in ARMv7.
>
> AArch64 introduces the concept of Exception Level (EL). Most ELs can be
> run
> in either 32bit (AArch32) or 64bit (AArch64) mode.
> - EL3 (highest exception level)
> - (Non-Secure) EL2 (for virtualization support)
> - Secure and Non-Secure EL1
> - Secure and Non-Secure EL0 (lowest exception level)
>
> (I think - need to double check with ARMv8 spec) Any exception level
> can run
> in 32bit mode (AArch32).
> But if an exception level is in 32bit mode then all the lowest
> exception
> levels are in 32bit mode.
>
> 'ARM Trusted Firmware' is an open source firmware that runs and support
> the
> Secure Exception Levels (EL3, Secure EL1, Secure EL0).
> UEFI (and its Tianocore Open Source implementation) only covers the
> Non-Secure Exception Level. UEFI should run at the highest Non-Secure
> exception level (probably EL2 or Non-Secure EL1 if there is no support
> for
> EL2). 'ARM Trusted Firmware' does not support (yet) 32bit secure space.
>
> There is nothing that prevents to run 'ARM Trusted Firmware' in 64bit
> mode
> (EL3) and start UEFI from there in 32bit mode (EL2).
> Note: This use case (starting into Non-Secure 32bit mode) has not been
> validated yet.
>
> If your SoC support AArch64 and AArch32 then it will always start in
> AArch64
> mode.
>
> Here is wikipage to explain how to build and run UEFI on the Foundation
> Model:
> https://sourceforge.net/apps/mediawiki/tianocore/index.php?title=ArmPla
> tform
> Pkg/AArch64
>
> Let me know if you need further clarifications,
> Olivier
>
> > -----Original Message-----
> > From: tiger...@viatech.com.cn [mailto:tiger...@viatech.com.cn]
> > Sent: 13 January 2014 04:56
> > To: edk2-devel@lists.sourceforge.net
> > Subject: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
> >
> > Hi, sharma:
> > Thank you very much!
> > I got it:
> > Arm-trusted-firmware is the first running code on Foundation model.
> > It runs at aarch64 execution state.
> >
> > Best wishes,
> >
> >
> > -----邮件原件-----
> > 发件人: bhupesh.sha...@freescale.com
> > [mailto:bhupesh.sha...@freescale.com]
> > 发送时间: 2014年1月13日 12:48
> > 收件人: 'edk2-devel@lists.sourceforge.net'
> > 主题: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
> >
> > Hi Tiger,
> >
> > Yes, the Trusted firmware runs in EL3 and calls the UEFI boot
> firmware
> > which runs in EL2.
> >
> > In the trusted firmware project https://github.com/ARM-software/arm-
> > trusted-firmware
> > you will find the instructions to launch UEFI from this firmware on
> the
> > ARM FVPs (fixed Virtual
> > Platforms) - for example the FVP_Base_AEMv8A-AEMv8A, in the readme.md
> > file
> > (https://github.com/ARM-software/arm-trusted-
> > firmware/blob/master/readme.md)
> >
> > Note that the Trusted Firmware has only been tested only on 64-bit
> > versions of the ARM FVPs, so
> > don't know how you will use to test the same for your 32-bit AArch32
> > code.
> >
> > Regards,
> > Bhupesh
> >
> >
> > > -----Original Message-----
> > > From: tiger...@viatech.com.cn [mailto:tiger...@viatech.com.cn]
> > > Sent: Monday, January 13, 2014 10:10 AM
> > > To: edk2-devel@lists.sourceforge.net
> > > Subject: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
> > >
> > > Hi, sharma:
> > > I used arm-none-linux-gnueabi-gcc-4.5.2 to compile 32bit uefi code.
> > > I have a question about foundation model:
> > > 1. There is an Open Source implementation of the Trusted/Secure
> > Firmware:
> > > https://github.com/ARM-software/arm-trusted-firmware
> > > So, what is the relationship between arm-trusted-firmware and
> > aarch64
> > > uefi boot code.
> > > Arm-trusted-firmware will load aarch64 uefi boot code and jump
> to
> > run
> > > it?
> > >
> > > Best wishes,
> > > -----邮件原件-----
> > > 发件人: bhupesh.sha...@freescale.com
> > > [mailto:bhupesh.sha...@freescale.com]
> > > 发送时间: 2014年1月13日 12:02
> > > 收件人: edk2-devel@lists.sourceforge.net
> > > 主题: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
> > >
> > > Hi Tiger,
> > >
> > > You can use the AArch64 foundation model support code in the EDK2
> > code
> > > base to write reference code for your ARMv8 SoC.
> > >
> > > Also which toolchain do you use for compiling your AArch32 (32-bit
> > code)?
> > >
> > > Regards,
> > > Bhupesh
> > >
> > >
> > > > -----Original Message-----
> > > > From: tiger...@viatech.com.cn [mailto:tiger...@viatech.com.cn]
> > > > Sent: Monday, January 13, 2014 9:16 AM
> > > > To: edk2-devel@lists.sourceforge.net
> > > > Subject: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
> > > >
> > > > Hi, sharma:
> > > > Thanks for your answer!
> > > > I described my understanding on current ARM UEFI code:
> > > > 1. Most ARM UEFI code package is based on ARMv7 SOCs.
> > > > Because of lacking ARMv8 development board, so enthusiast
> > ported
> > > > uefi code on 32bit SOC.
> > > > 2. ARMv8 supports aarch32 state.
> > > > So, if ARMv8 SOC powered to aarch32 state:
> > > > Developer could use current 32bit uefi code as code base to
> > boot
> > > > to uefi shell environment.
> > > > 3. at uefi shell environment, there are 2 methods to boot 64bit
> > linux
> > > > kernel.
> > > > (1) switch to aarch64 state, then boot to linux kernel's
> entry
> > > point.
> > > > (2) linux kernel's entry point included code to switch
> itself's
> > > > execute state to aarch64.if this assumption exist, uefi
> bootloader
> > > > just keep aarch32 state.
> > > >
> > > > Best wishes,
> > > > -----邮件原件-----
> > > > 发件人: bhupesh.sha...@freescale.com
> > > > [mailto:bhupesh.sha...@freescale.com]
> > > > 发送时间: 2014年1月13日 11:26
> > > > 收件人: 'edk2-devel@lists.sourceforge.net'
> > > > 抄送: 'oliviermar...@users.sourceforge.net'
> > > > 主题: Re: [edk2] [edk2-ARM] ARMv8 bootloader question
> > > >
> > > > Hi Tiger,
> > > >
> > > > AFAIK, the AArch64 ISA is written from scratch for 64-bit
> support.
> > > > Although it is backward compatible with AArch32 and binaries
> > compiled
> > > > for
> > > > AArch32 (ARMv7 compatible) are supposed to run well on the ARMv8
> > > > machine running in AArch32 mode.
> > > >
> > > > However, as per my understanding (and Olivier can correct me if I
> > am
> > > > wrong here), the UEFI code for ARMv8 executes in AArch64 mode -
> > > > usually if the ARM core boots up in AArch64 in EL3, bootloaders
> > like
> > > > UEFI/u-boot also execute in AArch64 EL3 or EL2.
> > > >
> > > > Regards,
> > > > Bhupesh
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: tiger...@viatech.com.cn [mailto:tiger...@viatech.com.cn]
> > > > > Sent: Monday, January 13, 2014 6:32 AM
> > > > > To: edk2-devel@lists.sourceforge.net
> > > > > Cc: oliviermar...@users.sourceforge.net
> > > > > Subject: [edk2] [edk2-ARM] ARMv8 bootloader question
> > > > >
> > > > > Hi, Oliver:
> > > > > I have a question abourt ARMv8 CPU's bootloader.
> > > > > ARMv8 supports: AARCH32 / AARCH64
> > > > > Take an example:
> > > > > An ARMv8 SOC, when power up / reset, its default state is :
> > AARCH32
> > > > > Then, could i still run an old arm uefi bootloader which
> written
> > by
> > > > > ARMv7 instruction set?
> > > > > I will switch ARMv8 SOC to AARCH64 before jumping into linux
> > kernel.
> > > > > Is it possible?
> > > > >
> > > > > Best wishes,
> > > > >
> > > > > ---------------------------------------------------------------
> --
> > ---
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> >
> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.
> > > > > clk
> > > > > trk
> > > > > _______________________________________________
> > > > > edk2-devel mailing list
> > > > > edk2-devel@lists.sourceforge.net
> > > > > https://lists.sourceforge.net/lists/listinfo/edk2-devel
> > > > >
> > > >
> > > >
> > > > -----------------------------------------------------------------
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> > > > clk
> > > > trk
> > > > _______________________________________________
> > > > edk2-devel mailing list
> > > > edk2-devel@lists.sourceforge.net
> > > > https://lists.sourceforge.net/lists/listinfo/edk2-devel
> > > >
> > > > -----------------------------------------------------------------
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> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.
> > > > clk
> > > > trk
> > > > _______________________________________________
> > > > edk2-devel mailing list
> > > > edk2-devel@lists.sourceforge.net
> > > > https://lists.sourceforge.net/lists/listinfo/edk2-devel
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> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.c
> > lk
> > > trk
> > > _______________________________________________
> > > edk2-devel mailing list
> > > edk2-devel@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/edk2-devel
> > >
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> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.c
> > lk
> > > trk
> > > _______________________________________________
> > > edk2-devel mailing list
> > > edk2-devel@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/edk2-devel
> > ---------------------------------------------------------------------
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> > lktrk
> > _______________________________________________
> > edk2-devel mailing list
> > edk2-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/edk2-devel
> >
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> > lktrk
> > _______________________________________________
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> > edk2-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/edk2-devel
>
>
>
>
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