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platform: openpiton: Move openpiton platform from fpga to generic

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The OpenPiton framework has a generic PMU that is not used by OpenSBI.
Due to OpenSBI’s build system we cannot directly reuse the generic
platform functions, so move the OpenPiton platform to generic. Also due
to the generic platform is where new features are added.

Signed-off-by: Manuel Hernández Méndez <maherme.dev@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20250813104759.33276-1-maherme.dev@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Manuel Hernández Méndez
2025-08-13 12:47:59 +02:00
committed by Anup Patel
parent 3204d74486
commit 525ac970b3
11 changed files with 44 additions and 93 deletions
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6
docs/platform/fpga-openpiton.md
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@@ -7,8 +7,8 @@ processor from ETH Zurich. To this end, Ariane has been equipped with a
different L1 cache subsystem that follows a write-through protocol and that has
support for cache invalidations and atomics.
To build platform specific library and firmwares, provide the
*PLATFORM=fpga/openpiton* parameter to the top level `make` command.
To build platform specific library and firmwares, provide the *PLATFORM=generic*
parameter to the top level `make` command.
Platform Options
----------------
@@ -21,7 +21,7 @@ Building Ariane FPGA Platform
**Linux Kernel Payload**
```
make PLATFORM=fpga/openpiton FW_PAYLOAD_PATH=<linux_build_directory>/arch/riscv/boot/Image
make PLATFORM=generic FW_PAYLOAD_PATH=<linux_build_directory>/arch/riscv/boot/Image
```
Booting Ariane FPGA Platform

2
docs/platform/generic.md
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@@ -47,6 +47,7 @@ RISC-V Platforms Using Generic Platform
* **SiFive HiFive Unleashed** (*[sifive_fu540.md]*)
* **Spike** (*[spike.md]*)
* **T-HEAD C9xx series Processors** (*[thead-c9xx.md]*)
* **OpenPiton FPGA SoC** (*[fpga-openpiton.md]*)
[andes-ae350.md]: andes-ae350.md
[qemu_virt.md]: qemu_virt.md
@@ -55,3 +56,4 @@ RISC-V Platforms Using Generic Platform
[sifive_fu540.md]: sifive_fu540.md
[spike.md]: spike.md
[thead-c9xx.md]: thead-c9xx.md
[fpga-openpiton.md]: fpga-openpiton.md

5
docs/platform/platform.md
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@@ -31,10 +31,6 @@ OpenSBI currently supports the following virtual and hardware platforms:
* **Spike**: Platform support for the Spike emulator. More
details on this platform can be found in the file *[spike.md]*.
* **OpenPiton FPGA SoC**: Platform support OpenPiton research platform based
on ariane core. More details on this platform can be found in the file
*[fpga-openpiton.md]*.
* **Shakti C-class SoC Platform**: Platform support for Shakti C-class
processor based SOCs. More details on this platform can be found in the
file *[shakti_cclass.md]*.
@@ -56,6 +52,5 @@ comments to facilitate the implementation.
[andes-ae350.md]: andes-ae350.md
[thead-c910.md]: thead-c910.md
[spike.md]: spike.md
[fpga-openpiton.md]: fpga-openpiton.md
[shakti_cclass.md]: shakti_cclass.md
[renesas-rzfive.md]: renesas-rzfive.md