diff options
| author | Tim Hutt <timothy.hutt@codasip.com> | 2024-02-02 11:56:55 +0000 |
|---|---|---|
| committer | Bill McSpadden <bill@riscv.org> | 2024-02-05 11:22:09 -0600 |
| commit | 4de2bff12d967d91dd064e4a49e25ca4785f25e3 (patch) | |
| tree | b106b03932811b9f35c4ac025a89c6f47862dc8f /ocaml_emulator/riscv_ocaml_sim.ml | |
| parent | d5e89a71e3a84495c1b88a7749c25fd6b9da684b (diff) | |
| download | sail-riscv-4de2bff12d967d91dd064e4a49e25ca4785f25e3.zip sail-riscv-4de2bff12d967d91dd064e4a49e25ca4785f25e3.tar.gz sail-riscv-4de2bff12d967d91dd064e4a49e25ca4785f25e3.tar.bz2 | |
Improve PMP support
This implements a lot of missing functionality for PMPs.
* Support 64 PMPs as well as 0 and 16.
* Support setting PMP grain
* Return correct address bits on read (some read as 0 or 1 depending on the grain and match type)
* Unlock PMPs on reset
* Implement pmpcfg WARL legalisation
Co-authored-by: Ben Fletcher <benjamin.fletcher@codasip.com>
Diffstat (limited to 'ocaml_emulator/riscv_ocaml_sim.ml')
| -rw-r--r-- | ocaml_emulator/riscv_ocaml_sim.ml | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/ocaml_emulator/riscv_ocaml_sim.ml b/ocaml_emulator/riscv_ocaml_sim.ml index c151d69..03887b7 100644 --- a/ocaml_emulator/riscv_ocaml_sim.ml +++ b/ocaml_emulator/riscv_ocaml_sim.ml @@ -41,9 +41,12 @@ let options = Arg.align ([("-dump-dts", ("-enable-misaligned-access", Arg.Set P.config_enable_misaligned_access, " enable misaligned accesses without M-mode traps"); - ("-enable-pmp", - Arg.Set P.config_enable_pmp, - " enable PMP support"); + ("-pmp-count", + Arg.Int P.set_config_pmp_count, + " number of supported PMPs (0, 16, 64)"); + ("-pmp-grain", + Arg.Int P.set_config_pmp_grain, + " exponent of granularity of PMP addresses (G in the spec)"); ("-enable-next", Arg.Set P.config_enable_next, " enable N extension"); |