Is there any official OpenSBI version for booting linux on S2C's Prodigy™ S7-19PD Logic System？

[stwjt]

Before start

• [X] I have read the XiangShan Documents. 我已经阅读过香山文档。
• [X] I have searched the previous issues and did not find anything relevant. 我已经搜索过之前的 issue，并没有找到相关的。
• [X] I have searched the previous discussions and did not find anything relevant. 我已经搜索过之前的 discussions，并没有找到相关的。

Describe you problem

您好，我想了解是否有一个香山官方支持的opensbi版本能够直接支持 S2C的Prodigy™ S7-19PD Logic System 的 启动。 Hello, I would like to know if there is an official Xiangshan-supported version of OpenSBI that can directly support the booting of the S2C Prodigy™ S7-19PD Logic System.

What did you do before

我在 GitHub 上只找到了依赖于 riscv-pk 实现的项目，并且我看到issue#3248提到“另外，目前我们已经逐步从riscv-pk切换到openSBl”。我先运行了ns-bbl的riscv-pk，bootloader能成功启动，但是linux内核没有显示，关于这个我也想问原因。之后我在opensbi上根据riscv-pk的uart_snps改了下，新增了uart_snps的一些函数，修改了libs/util/serial，uart串口能打印字符，在NEMU上能够正常运行，但在S2C的vu19p上跑似乎会在进入_scratch_init或者之后就卡死。目前不清楚原因。 On GitHub, I only found projects dependent on riscv-pk. Issue #3248 mentions 'Furthermore, we have been gradually transitioning from riscv-pk to openSBI.' Initially, I ran ns-bbl with riscv-pk and the bootloader boots successfully, but the Linux kernel does not display any output. I also want to ask about the possible reasons for this. Then, I modified openSBI based on riscv-pk's uart_snps, adding some functions for uart_snps and modifying libs/util/serial. The UART serial port can print characters, and it runs correctly in NEMU. However, when running on S2C's vu19p, it seems to hang either in _scratch_init or shortly after. The cause is currently unclear.

Environment

• XiangShan branch:
• XiangShan commit id: 09d2a32142c64fca898e17c0b943e61ddc331958
• NEMU commit id: 039bf5165d888c10a9436a8d33cdf4cb90b1e7f0
• SPIKE commit id:
• Operating System:
• gcc version:
• mill version:
• java version:
• riscv-pk id: de5d22656ca8aa351d0269b688a805b09b30a014

Additional context

No response

[cebarobot]

我们目前没有还没有提供用于 FPGA 平台的 openSBI 工作负载的构造教程。您可结合面向软件仿真平台的基于 openSBI 的工作负载构造教程和面向 FPGA 的基于 riscv-pk 的工作负载构造教程来构造您需要的工作负载。

造成内核没有输出或卡死的可能性很多，包括但不限于设备树配置、启动参数、硬件缺陷等，可能还需要进一步观察。

另外，FPGA 平台使用的 UART 模块貌似是 ns16550/8250 兼容的，openSBI 里有对 8250 UART 的支持，大概不需要额外的代码修改。

Currently, there is no tutorial for building openSBI workloads for FPGA platfrom. You could combine tutorial openSBI-Emulation workloads with tutorial riscv-pk-FPGA workloads, to build your workloads.

There are a lot of possible reasons for kernel stucking or not outputing, including wrong device tree, wrong booting parameter, hardware bugs, etc. Futher observation is needed.

By the way, FPGA use ns16550/8250 compatible UART module, which is supported in openSBI. It seems unnecessary to modify the source code.

[stwjt]

我们目前没有还没有提供用于 FPGA 平台的 openSBI 工作负载的构造教程。您可结合面向软件仿真平台的基于 openSBI 的工作负载构造教程和面向 FPGA 的基于 riscv-pk 的工作负载构造教程来构造您需要的工作负载。

造成内核没有输出或卡死的可能性很多，包括但不限于设备树配置、启动参数、硬件缺陷等，可能还需要进一步观察。

另外，FPGA 平台使用的 UART 模块貌似是 ns16550/8250 兼容的，openSBI 里有对 8250 UART 的支持，大概不需要额外的代码修改。

Currently, there is no tutorial for building openSBI workloads for FPGA platfrom. You could combine tutorial openSBI-Emulation workloads with tutorial riscv-pk-FPGA workloads, to build your workloads.

There are a lot of possible reasons for kernel stucking or not outputing, including wrong device tree, wrong booting parameter, hardware bugs, etc. Futher observation is needed.

By the way, FPGA use ns16550/8250 compatible UART module, which is supported in openSBI. It seems unnecessary to modify the source code.

好的，感谢你的帮助。 Thanks for your help.

[stwjt]

我们目前没有还没有提供用于 FPGA 平台的 openSBI 工作负载的构造教程。您可结合面向软件仿真平台的基于 openSBI 的工作负载构造教程和面向 FPGA 的基于 riscv-pk 的工作负载构造教程来构造您需要的工作负载。 造成内核没有输出或卡死的可能性很多，包括但不限于设备树配置、启动参数、硬件缺陷等，可能还需要进一步观察。 另外，FPGA 平台使用的 UART 模块貌似是 ns16550/8250 兼容的，openSBI 里有对 8250 UART 的支持，大概不需要额外的代码修改。 Currently, there is no tutorial for building openSBI workloads for FPGA platfrom. You could combine tutorial openSBI-Emulation workloads with tutorial riscv-pk-FPGA workloads, to build your workloads. There are a lot of possible reasons for kernel stucking or not outputing, including wrong device tree, wrong booting parameter, hardware bugs, etc. Futher observation is needed. By the way, FPGA use ns16550/8250 compatible UART module, which is supported in openSBI. It seems unnecessary to modify the source code.

好的，感谢你的帮助。 Thanks for your help.

感谢帮助 已经找到问题出现在哪里了 进入_scratch_init卡死的原因是没关FW_PIC。。。把FW_PIC=n设置了 然后在把一些不必要的函数注释掉后opensbi就能跑了 Thank you for the assistance. I've identified the cause of the issue that was causing the system to hang during _scratch_init. It was due to FW_PIC not being disabled. After setting FW_PIC to 'n' and commenting out some unnecessary functions, the opensbi can run.