1Shakti C Reference Platform (``shakti_c``) 2========================================== 3 4Shakti C Reference Platform is a reference platform based on arty a7 100t 5for the Shakti SoC. 6 7Shakti SoC is a SoC based on the Shakti C-class processor core. Shakti C 8is a 64bit RV64GCSUN processor core. 9 10For more details on Shakti SoC, please see: 11https://gitlab.com/shaktiproject/cores/shakti-soc/-/blob/master/fpga/boards/artya7-100t/c-class/README.rst 12 13For more info on the Shakti C-class core, please see: 14https://c-class.readthedocs.io/en/latest/ 15 16Supported devices 17----------------- 18 19The ``shakti_c`` machine supports the following devices: 20 21 * 1 C-class core 22 * Core Level Interruptor (CLINT) 23 * Platform-Level Interrupt Controller (PLIC) 24 * 1 UART 25 26Boot options 27------------ 28 29The ``shakti_c`` machine can start using the standard -bios 30functionality for loading the baremetal application or opensbi. 31 32Boot the machine 33---------------- 34 35Shakti SDK 36~~~~~~~~~~ 37Shakti SDK can be used to generate the baremetal example UART applications. 38 39.. code-block:: bash 40 41 $ git clone https://gitlab.com/behindbytes/shakti-sdk.git 42 $ cd shakti-sdk 43 $ make software PROGRAM=loopback TARGET=artix7_100t 44 45Binary would be generated in: 46 software/examples/uart_applns/loopback/output/loopback.shakti 47 48You could also download the precompiled example applications using below 49commands. 50 51.. code-block:: bash 52 53 $ wget -c https://gitlab.com/behindbytes/shakti-binaries/-/raw/master/sdk/shakti_sdk_qemu.zip 54 $ unzip shakti_sdk_qemu.zip 55 56Then we can run the UART example using: 57 58.. code-block:: bash 59 60 $ qemu-system-riscv64 -M shakti_c -nographic \ 61 -bios path/to/shakti_sdk_qemu/loopback.shakti 62 63OpenSBI 64~~~~~~~ 65We can also run OpenSBI with Test Payload. 66 67.. code-block:: bash 68 69 $ git clone https://github.com/riscv/opensbi.git -b v0.9 70 $ cd opensbi 71 $ wget -c https://gitlab.com/behindbytes/shakti-binaries/-/raw/master/dts/shakti.dtb 72 $ export CROSS_COMPILE=riscv64-unknown-elf- 73 $ export FW_FDT_PATH=./shakti.dtb 74 $ make PLATFORM=generic 75 76fw_payload.elf would be generated in build/platform/generic/firmware/fw_payload.elf. 77Boot it using the below qemu command. 78 79.. code-block:: bash 80 81 $ qemu-system-riscv64 -M shakti_c -nographic \ 82 -bios path/to/fw_payload.elf 83