public inbox for devel@edk2.groups.io
 help / color / mirror / Atom feed
From: "Leif Lindholm" <quic_llindhol@quicinc.com>
To: Sami Mujawar <sami.mujawar@arm.com>
Cc: Ard Biesheuvel <ardb@kernel.org>, <devel@edk2.groups.io>,
	Sunil V L <sunilvl@ventanamicro.com>,
	Jiewen Yao <jiewen.yao@intel.com>,
	Jordan Justen <jordan.l.justen@intel.com>,
	Gerd Hoffmann <kraxel@redhat.com>,
	Daniel Schaefer <git@danielschaefer.me>,
	"nd@arm.com" <nd@arm.com>
Subject: Re: [edk2-devel] [edk2-staging/RiscV64QemuVirt PATCH 25/29] OvmfPkg: Add NorFlashQemuLib library
Date: Wed, 19 Oct 2022 14:46:37 +0100	[thread overview]
Message-ID: <Y0//vf+xZe4zZANr@qc-i7.hemma.eciton.net> (raw)
In-Reply-To: <4679fd99-b2db-8ab5-5734-514480c4c830@arm.com>

On Wed, Oct 19, 2022 at 14:19:28 +0100, Sami Mujawar wrote:
> > > Considering this, should QemuNorFlashDxe be called OvmfNorFlashDxe?
> > > 
> > > [/SAMI]
> > > 
> > Ah yes, good point. So using Qemu as a prefix is slightly problematic.
> > 
> > My intent is for this driver to be optimized towards NOR flash
> > emulation the way QEMU implements it. The main difference between the
> > platforms is that some of them (notably, ArmVirtQemu.dsc) also execute
> > from the emulated region, which requires an executable (read-only)
> > memslot in KVM, as instruction fetches (as opposed to explicit loads
> > and stores) cannot be emulated by KVM. KvmTool only uses the NOR flash
> > for variables, so it doesn't really care how the emulation is
> > implemented, as long as the loads and stores are carried out in the
> > expected way.
> > 
> > I don't think the Ovmf prefix makes sense here either - OVMF is still
> > primarily x86, which uses a different flash emulation altogether.
> > Maybe VirtNorFlashDxe, to emphasize that it does not expect to be
> > dealing with actual NOR flash?
> 
> VirtNorFlashDxe sounds good to me.

Sounds good to me too.

/
    Leif

  reply	other threads:[~2022-10-19 13:47 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-10 10:11 [edk2-staging/RiscV64QemuVirt PATCH 00/29] Add support for RISC-V virt machine Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 01/29] MdePkg/Register: Add register definition header files for RISC-V Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 02/29] MdePkg: Add RISCV_EFI_BOOT_PROTOCOL related definitions Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 03/29] MdePkg/BaseLib: RISC-V: Add few more helper functions Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 04/29] MdePkg: Add BaseRiscVSbiLib Library for RISC-V Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 05/29] OvmfPkg/PlatformInitLib: Refactor to allow other architectures Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 06/29] OvmfPkg/PlatformInitLib: Add support for RISC-V Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 07/29] OvmfPkg/ResetSystemLib: Refactor to allow other architectures Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 08/29] OvmfPkg/ResetSystemLib: Add support for RISC-V Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 09/29] OvmfPkg/Sec: Refactor to allow other architectures Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 10/29] OvmfPkg/Sec: Add RISC-V support Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 11/29] OvmfPkg/PlatformPei: Refactor to allow other architectures Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 12/29] OvmfPkg/PlatformPei: Add support for RISC-V Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 13/29] UefiCpuPkg/CpuTimerLib: Refactor to allow other architectures Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 14/29] UefiCpuPkg/CpuTimerLib: Add support for RISC-V Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 15/29] UefiCpuPkg/CpuExceptionHandlerLib: Refactor to allow other architectures Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 16/29] UefiCpuPkg/CpuExceptionHandlerLib: Add support for RISC-V Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 17/29] UefiCpuPkg/CpuDxe: Refactor to allow other architectures Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 18/29] UefiCpuPkg/CpuDxe: Add support for RISC-V Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 19/29] UefiCpuPkg/CpuDxe: Add RISC-V Boot protocol support Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 20/29] UefiCpuPkg: Add CpuTimerDxe module Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 21/29] ArmVirtPkg/PlatformHasAcpiDtDxe: Move to OvmfPkg Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 22/29] ArmVirtPkg: Fix up the location of PlatformHasAcpiDtDxe Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 23/29] ArmVirtPkg/PlatformBootManagerLib: Move to OvmfPkg Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 24/29] ArmVirtPkg: Fix up the paths to PlatformBootManagerLib Sunil V L
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 25/29] OvmfPkg: Add NorFlashQemuLib library Sunil V L
2022-10-19 12:19   ` Ard Biesheuvel
2022-10-19 12:40     ` Sunil V L
2022-10-19 13:05     ` [edk2-devel] " Sami Mujawar
2022-10-19 13:14       ` Ard Biesheuvel
2022-10-19 13:19         ` Sami Mujawar
2022-10-19 13:46           ` Leif Lindholm [this message]
2022-10-10 10:11 ` [edk2-staging/RiscV64QemuVirt PATCH 26/29] OvmfPkg: Add generic Qemu NOR flash DXE driver Sunil V L
2022-10-10 10:39   ` Ard Biesheuvel
2022-10-10 15:19     ` Sunil V L
2022-10-10 15:29       ` Ard Biesheuvel
2022-10-10 16:05         ` Sunil V L
2022-10-10 16:16           ` Ard Biesheuvel
2022-10-10 17:20             ` Sunil V L
2022-10-11 11:09               ` Ard Biesheuvel
2022-10-10 10:12 ` [edk2-staging/RiscV64QemuVirt PATCH 27/29] OvmfPkg: RiscVVirt: Add Qemu Virt platform support Sunil V L
2022-10-10 10:12 ` [edk2-staging/RiscV64QemuVirt PATCH 28/29] Maintainers.txt: Add entry for OvmfPkg/RiscVVirt Sunil V L
2022-10-10 10:12 ` [edk2-staging/RiscV64QemuVirt PATCH 29/29] UefiCpuPkg/UefiCpuPkg.ci.yaml: Ignore RISC-V file Sunil V L

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-list from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=Y0//vf+xZe4zZANr@qc-i7.hemma.eciton.net \
    --to=devel@edk2.groups.io \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox