[PATCH v2 0/5] Add Svadu extension support

[Anup Patel]

On Tue, Oct 24, 2023 at 3:42 PM Yong-Xuan Wang <yongxuan.wang at sifive.com> wrote:
>
> This series enables Svadu extension support by configuring the menvcfg
> CSR and, if available, displays the Svadu extension in the boot log.
>
> Additionally, we've made some programming improvements in
> lib/sbi/sbi_hart.c and lib/utils/fdt/fdt_helper.c.
>
> ---
> v2:
> - Rearrange the patches to do the code refactoring first before adding
>   new features
> - Suggested by Anup and Atish, detect extensions from DT instead of
>   menvcfg CSR
> - Enable access to some extensions through menvcfg CSR if they are
>   present in the device tree.
>
> Yong-Xuan Wang (5):
>   lib: sbi: Improve the code of privilege mode and extensions detection
>   lib: sbi: Refactor the code for enable extensions in menvfg CSR
>   lib: sbi: Using one array to define the name of extensions
>   lib: sbi: Detect extensions from the ISA string in DT
>   lib: sbi: Add support for Svadu extension

For backward compatibility with existing OSes, it is better to have
supervisor OS explicitly enable Svadu using the upcoming SBI
FWFT extension instead of enabling it unconditionally whenever
Svadu extension is available.

Regards,
Anup

>
>  include/sbi/riscv_encoding.h |   6 +-
>  include/sbi/sbi_hart.h       |  15 +++
>  lib/sbi/sbi_hart.c           | 226 +++++++++++++----------------------
>  lib/utils/fdt/fdt_helper.c   |   5 +-
>  4 files changed, 104 insertions(+), 148 deletions(-)
>
> --
> 2.17.1
>
>
> --
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