[PATCH v3 00/10] Add support for Smepmp

[Anup Patel]

On Wed, Jul 12, 2023 at 10:04 AM Himanshu Chauhan
<hchauhan at ventanamicro.com> wrote:
>
> This patch series adds support for the Smepmp specification.
> The detection of Smepmp support in platform depends on the
> ISA string present in the FDT. If "smepmp" is present in ISA
> string in FDT, Smepmp is enabled.
>
> When Smepmp is enabled, the M-mode software's free access
> to S/U memory region is revoked. Hence, all the shared
> memory access between M-mode and S/U-mode must be done
> only after mapping the shared memory.
>
> changes in v3:
> * Split "Add smepmp support" patch into subpatches
>         - Root domain permission change is different patch
>         - Ordering change in PMP configuration is a different patch.
>
> changes in v2:
> * Split into futher patches
>         - FDT ISA string parsing is now separate patch
>         - Map/Unmap functions for shared memory are in different patch
> * Addressed other general comments.
>
>
> Himanshu Chauhan (10):
>   include: sbi: Add macro definitions for mseccfg CSR
>   lib: sbi: Add functions to manipulate PMP entries
>   include: sbi: Add Smepmp specific access flags for PMP entries
>   lib: sbi: Add smepmp in hart extensions
>   lib: utils: Add detection of Smepmp from ISA string in FDT
>   lib: sbi: Grant SU R/W/X permissions to whole memory
>   lib: sbi: Add support for Smepmp
>   lib: sbi: Change the order of PMP initialization
>   lib: sbi: Add functions to map/unmap shared memory
>   lib: sbi: Map/Unmap debug console shared memory buffers

Applied this series to the riscv/opensbi repo.

Thanks,
Anup

>
>  include/sbi/riscv_asm.h            |   6 +
>  include/sbi/riscv_encoding.h       |  12 ++
>  include/sbi/sbi_domain.h           |  84 +++++++++++++-
>  include/sbi/sbi_hart.h             |  19 ++++
>  include/sbi_utils/fdt/fdt_helper.h |   3 +
>  lib/sbi/riscv_asm.c                |  42 +++++++
>  lib/sbi/sbi_domain.c               |  14 ++-
>  lib/sbi/sbi_ecall_dbcn.c           |   3 +
>  lib/sbi/sbi_hart.c                 | 177 +++++++++++++++++++++++++----
>  lib/sbi/sbi_init.c                 |  26 +++--
>  lib/utils/fdt/fdt_helper.c         | 111 ++++++++++++++++++
>  platform/generic/platform.c        |   9 ++
>  12 files changed, 468 insertions(+), 38 deletions(-)
>
> --
> 2.34.1
>
>
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