[edk2-devel] [PATCH 0/7] RISC-V: Add MMU support

[Tuan Phan]

Hi Andrei,
Here it is: https://github.com/pttuan/edk2/tree/tphan/riscv_mmu

On Thu, Mar 9, 2023 at 1:34 PM Warkentin, Andrei <andrei.warkentin at intel.com>
wrote:

> Hi Tuan,
>
>
>
> Could you share a GitHub link to a branch with the patch set? Somehow my
> email client is mangling one of your patches where it’s all one giant line
> of code.
>
>
>
> A
>
>
>
> *From:* Tuan Phan <tphan at ventanamicro.com>
> *Sent:* Thursday, March 9, 2023 1:20 PM
> *To:* devel at edk2.groups.io
> *Cc:* Kinney, Michael D <michael.d.kinney at intel.com>; Gao, Liming <
> gaoliming at byosoft.com.cn>; Liu, Zhiguang <zhiguang.liu at intel.com>;
> sunilvl at ventanamicro.com; git at danielschaefer.me; Warkentin, Andrei <
> andrei.warkentin at intel.com>
> *Subject:* RE: [PATCH 0/7] RISC-V: Add MMU support
>
>
>
> Hi All,
>
> Any updates on this series?
>
>
>
> Thanks,
>
>
>
> *From: *Tuan Phan <tphan at ventanamicro.com>
> *Sent: *Monday, March 6, 2023 9:33 AM
> *To: *devel at edk2.groups.io
> *Cc: *michael.d.kinney at intel.com; gaoliming at byosoft.com.cn;
> zhiguang.liu at intel.com; sunilvl at ventanamicro.com; git at danielschaefer.me;
> andrei.warkentin at intel.com; Tuan Phan <tphan at ventanamicro.com>
> *Subject: *[PATCH 0/7] RISC-V: Add MMU support
>
>
>
> This series adds MMU support for RISC-V. Only SV39/48/57 modes
>
> are supported and tested. The MMU is required to support setting
>
> page attribute which is the first basic step to support security
>
> booting on RISC-V.
>
>
>
> There are three parts:
>
> 1. Add MMU core to UefiCpuPkg. MMU will be enabled during
>
> CpuDxe initialization.
>
> 2. Fix OvmfPkg/VirtNorFlashDxe that failed to add flash base
>
> address to GCD if already done.
>
> 3. Enable MMU for RiscVVirt platform and populating its device
>
> resources in SEC phase. All resources should be populated in HOB
>
> or added to GCD by driver before accessing them when MMU enabled.
>
>
>
> Tuan Phan (7):
>
>   MdePkg/BaseLib: RISC-V: Support getting satp register value
>
>   MdePkg/Register: RISC-V: Add satp mode bits shift definition
>
>   UefiCpuPkg: RISC-V: Support MMU with SV39/48/57 mode
>
>   OvmfPkg/RiscVVirt: VirtNorFlashPlatformLib: Fix wrong flash size
>
>   OvmfPkg/VirtNorFlashDxe: Not add memory space if it exists
>
>   OvmfPkg/RiscVVirt: SEC: Add IO memory resource hob for platform
>
>     devices
>
>   OvmfPkg/RiscVVirt: Enable MMU with SV39 mode
>
>
>
> MdePkg/Include/Library/BaseLib.h              |   5 +
>
> .../Include/Register/RiscV64/RiscVEncoding.h  |   7 +-
>
> MdePkg/Library/BaseLib/RiscV64/RiscVMmu.S     |   8 +
>
> .../VirtNorFlashStaticLib.c                   |   3 +-
>
> OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc           |   1 +
>
> OvmfPkg/RiscVVirt/Sec/Memory.c                |  17 -
>
> OvmfPkg/RiscVVirt/Sec/Platform.c              |  62 +++
>
> OvmfPkg/RiscVVirt/Sec/SecMain.inf             |   1 +
>
> OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c     |  25 +-
>
> UefiCpuPkg/CpuDxeRiscV64/CpuDxe.c             |  10 +-
>
> UefiCpuPkg/CpuDxeRiscV64/CpuDxe.h             |   1 +
>
> UefiCpuPkg/CpuDxeRiscV64/CpuDxeRiscV64.inf    |   5 +
>
> UefiCpuPkg/CpuDxeRiscV64/Mmu.c                | 493 ++++++++++++++++++
>
> UefiCpuPkg/CpuDxeRiscV64/Mmu.h                |  33 ++
>
> UefiCpuPkg/CpuDxeRiscV64/MmuCore.S            |  29 ++
>
> UefiCpuPkg/UefiCpuPkg.dec                     |   8 +
>
> 16 files changed, 676 insertions(+), 32 deletions(-)
>
> create mode 100644 UefiCpuPkg/CpuDxeRiscV64/Mmu.c
>
> create mode 100644 UefiCpuPkg/CpuDxeRiscV64/Mmu.h
>
> create mode 100644 UefiCpuPkg/CpuDxeRiscV64/MmuCore.S
>
>
>
> --
>
> 2.25.1
>
>
>
>
>


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