g2gps

Debugging applications with litex_sim

8

Hello, I'm attempting to use litex_sim to debug an application running on VexRiscv. I've been using the wiki pages: [Use-GDB-with-VexRiscv-CPU](https://github.com/enjoy-digital/litex/wiki/Use-GDB-with-VexRiscv-CPU), [Use-Host-Bridge-to-control-debug-a-SoC](https://github.com/enjoy-digital/litex/wiki/Use-Host-Bridge-to-control-debug-a-SoC) and [SoC-Simulator](https://github.com/enjoy-digital/litex/wiki/SoC-Simulator) as a guide, however I might not...

Unexpected behaviour with poll and tickless scheduler

10

Hello, I'm using poll in conjunction with timerfds and the `POLLIN` event to schedule actions at different rates. I'm finding that when `CONFIG_SCHED_TICKLESS` is used, poll is returning with only...

testing/sd_*: Restrict function and variable scope to current file.

2

## Summary Add the static keyword to required function and variable delcaration to reduce their scope. Stops namespace pollution in `CONFIG_BUILD_FLAT` ## Impact Stops symbol collision when `CONFIG_TESTING_SD_BENCH` and `CONFIG_TESTING_SD_STRESS`...

Issue building ELF programs with no symbol table.

1

This was originally raised by @acassis in #1816 and #1810. However I've only just got a chance to have a look at it. To summarize, applications built against Nuttx export...

drivers/devicetree/fdt: add additional fdt parsing utilities

3

## Summary arch/risc-v/litex: add some litex specific FDT helpers. ## Impact These utilities remove some of the boilerplate needed for FDT parsing and device initialization. ## Testing Litex port with...

riscv m-timer is schduled multiple times per interrupt.

3

While profiling some of the litex layers, I found that the riscv mtimer is scheduled through openSBI multiple times per alarm interrupt. This isn't ideal, as the openSBI ecall is...

[Discussion] Integrating port specific syscall proxies

1

With the `risc-v/litex` port, we're able to access the TIME and TIMEH CSRs in usermode. I would like take advantage of this feature to replace the proxies for syscalls, such...

arch/risc-v/riscv_mtimer: Update the mtimecmp value once per interrup…

1

## Summary Cache the next timeout value in the drivers instance and update the mtimecmp value once. This is advantageous as the opensbi ecall to set the timer is expensive...

Help with file system issue diagnosis when swapping between littlefs and fatfs.

5

I've encountered an issue while swapping the file system used for our application from LittleFS to FatFS, and would appreciate any help diagnosing the problem. For my initial investigation, I've...

arch/risc-v/litex: provide architecture specific perfmon bindings.

5

## Summary provide architecture specific perfmon bindings. Using the up_perf_xx bindings directory with the core clock is more efficient than performing a nanosecond conversion on every gettime event. ## Impact...