Basically, i want to add an extra eighth pheripheral WishBone to APB bridge and connect a APB slave along with the existing 7 pheripheral on the RVFPGA SoC. Despite my efforts, I've encountered challenges and I'm struggling to understand the intricacies. Can someone guide me where and how to make chnages. I have a fully working WB2APB bridge and it's connected to the slave. I have tested the verilog code for WB2APB bridge and it's slave standalone using vivado. It woks perfectly fine. My idea is to connect the bridge at the wb interconnect and from where signals will propagate to the apb interface and thus to the apb slave.
Hi fasihulhassan,
In labs 6-10 of RVfpga v2.2 ( https://university.imgtec.com/rvfpga-download-page-en/ ) we give a lot of details and exercises with solutions on how to add new peripherals. Besides, in our recently released edX course ( https://www.edx.org/es/learn/computer-programming/the-linux-foundation-computer-architecture-with-an-industrial-risc-v-core ), in Chapter 6 we explain the process to add a peripheral in more detail, so you may also find it useful.
Let me add that for the multiplexer extension you can use v1.3.0 of wb_intercon_gen2.py ( https://github.com/olofk/wb_intercon/tree/v1.3.0 ) by running:
python sw/wb_intercon_gen2.py config.yml
with a config.yml that, for example, looks like this:
files_root: . vlnv: ::wb_intercon:0 parameters: masters: io: slaves : [rom, sys, spi_flash, uart] slaves: rom: offset : 0x00000000 size : 0x00001000 sys: offset : 0x00001000 size : 0x00000040 spi_flash: offset : 0x00001040 size : 0x00000040 uart: offset : 0x00002000 size : 0x00001000
print("Wishbone Data Resizer Endian: {}".format(config['endian']))
print("Wishbone Data Resizer Endian: {}".format(self.endian))
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