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platform: Add support for Shakti C-class SoC from IIT-M

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C-Class is a member of the SHAKTI family of processors from Indian
Institute of Technology - Madras(IIT-M).
It is an extremely configurable and commercial-grade 5-stage in-order
core supporting the standard RV64GCSUN ISA extensions.

https://gitlab.com/shaktiproject/cores/c-class/blob/master/README.md

We add OpenSBI support for Shakti C-class SoC.

Signed-off-by: Vijai Kumar K <vijai@behindbytes.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Vijai Kumar K
2020-06-17 19:25:16 +05:30
committed by Anup Patel
parent 637b348224
commit db56ef367c
10 changed files with 181 additions and 0 deletions
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2
docs/platform/generic.md
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@@ -47,6 +47,8 @@ RISC-V Platforms Using Generic Platform
* **QEMU RISC-V Virt Machine** (*[qemu_virt.md]*)
* **Spike** (*[spike.md]*)
* **Shakti C-class SoC Platform** (*[shakti_cclass.md]*)
[qemu_virt.md]: qemu_virt.md
[spike.md]: spike.md
[shakti_cclass.md]: shakti_cclass.md

5
docs/platform/platform.md
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@@ -38,6 +38,10 @@ OpenSBI currently supports the following virtual and hardware platforms:
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]*.
The code for these supported platforms can be used as example to implement
support for other platforms. The *platform/template* directory also provides
template files for implementing support for a new platform. The *object.mk*,
@@ -52,3 +56,4 @@ facilitate the implementation.
[thead-c910.md]: thead-c910.md
[spike.md]: spike.md
[fpga_openpiton.md]: fpga_openpiton.md
[shakti_cclass.md]: shakti_cclass.md

33
docs/platform/shakti_cclass.md Normal file
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@@ -0,0 +1,33 @@
Shakti C-class SoC Platform
===========================
C-Class is a member of the SHAKTI family of processors from
Indian Institute of Technology - Madras (IIT-M).
It is an extremely configurable and commercial-grade 5-stage
in-order core supporting the standard RV64GCSUN ISA extensions.
For more details, refer:
* https://gitlab.com/shaktiproject/cores/c-class/blob/master/README.md
* https://c-class.readthedocs.io/en/latest
* https://shakti.org.in
Platform Options
----------------
The *Shakti C-class SoC* platform does not have any platform-specific
options.
Building Shakti C-class Platform
--------------------------------
**Linux Kernel Payload**
```
make PLATFORM=generic FW_PAYLOAD_PATH=<linux_build_directory>/arch/riscv/boot/Image FW_PAYLOAD_FDT_PATH=<shakti.dtb path>
```
**Test Payload**
```
make PLATFORM=generic FW_PAYLOAD_FDT_PATH=<shakti.dtb path>
```