Updated qemu instructions at https://github.com/timvideos/qemu-litex/blob/master/README.md
On 2 April 2017 at 21:14, Tim Ansell <mit...@mithis.com> wrote: > We now have working or1k support & spi flash support in the repo at > https://github.com/timvideos/qemu-litex, it's going to need some cleanup > before we can upstream it however. > > You can continue to build QEmu as part of the HDMI2USB-litex-firmware with > the https://github.com/mithro/HDMI2USB-litex-firmware/blob/ > master/scripts/build-qemu.sh script. > > However, if you prefer you can build QEMu directly without the rest of the > environment using the https://github.com/timvideos/ > qemu-litex/blob/master/build-litex-qemu.sh script. This will download the > generated headers, BIOS and firmware from our prebuilt repo. > > Tim 'mithro' Ansell > > > On 31 March 2017 at 11:53, Tim Ansell <mit...@mithis.com> wrote: > >> Hi everyone! >> >> Thanks to some excellent work by Key2, we now have basic support for >> emulation of some HDMI2USB gateware features. This allows you to play with >> many parts of firmware development without needing hardware! >> >> To use this emulation, the process should be; >> >> 1) Follow "getting started" instructions for getting the gateware setup ( >> https://github.com/timvideos/HDMI2USB-litex-firmware/blob/m >> aster/getting-started.md) >> >> - You can skip the section requiring the Xilinx tools if you don't >> ever want to use the real hardware. >> >> 2) Enter the gateware environment with ./scripts/enter-env.sh >> >> 3) Set PLATFORM and TARGET correctly - IE "export PLATFORM=mimasv2" if >> using the MimasV2 >> >> 4) Run ./scripts/build-qemu.sh >> >> This will build you an QEmu emulator for your target in >> ./build/$PLATFORM_$TARGET_lm32/qemu and then run the bios+firmware using >> the emulator. >> >> The QEmu support is still very limited, at the moment it supports; >> * Only the net and base TARGETs (no support for video or hdmi2usb >> targets yet). >> * Emulation of lm32 CPU architecture (no support for or1k or risc-v yet). >> * Stub emulation of memory interfaces like DDR ram, block RAM and memory >> mapped SPI flash. >> * Emulation of liteEth for network connectivity (including mdio support). >> * Emulation of I2C bitbanging. >> >> There is still a lot of things which don't work properly (for example the >> timers) and it will be a lot of work to get this stuff upstream. Things >> which need work are support for more peripherals like the LED/switches, SPI >> flash bit banging, and video output stuff soon. Hopefully a GSoC student is >> interested in continuing this work (https://github.com/timvideos/ >> getting-started/issues/41) as it would accelerate it significantly! >> >> As QEmu does emulates the liteEth hardware, it should be very useful in >> improving the network stack (such as adding DHCP support). It should be >> very useful in projects like porting NuttX (https://github.com/timvideos/ >> getting-started/issues/42) and Linux (https://github.com/timvideos/ >> getting-started/issues/30) to our FPGA SoC. >> >> Looking forward to seeing what this enables! >> >> Tim 'mithro' Ansell >> > > -- You received this message because you are subscribed to the Google Groups "hdmi2usb - A HDMI capture solution" group. To unsubscribe from this group and stop receiving emails from it, send an email to hdmi2usb+unsubscr...@googlegroups.com.
