From: Tobias Platen <tplaten@posteo.de>
Date: Tue, 1 Feb 2022 20:02:39 +0000 (+0100)
Subject: add documentation how to build microwatt using libre soc core
X-Git-Tag: opf_rfc_ls005_v1~3228
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=24935df55467e735a8185549324f4dfb67073df8;p=libreriscv.git

add documentation how to build microwatt using libre soc core
---

diff --git a/HDL_workflow/microwatt.mdwn b/HDL_workflow/microwatt.mdwn
index b437e4608..ab233df5c 100644
--- a/HDL_workflow/microwatt.mdwn
+++ b/HDL_workflow/microwatt.mdwn
@@ -47,3 +47,16 @@ This needs gcc-powerpc64le-linux-gnu if cross compilation is used.
 	cd microwatt
 	cd litedram/gen-src/sdram_init/
 	make 
+	
+## Building microwatt-verilator using the libre-soc core
+	cd /path/to/soc
+	make microwatt_external_core
+	cp external_core_top.v /path/to/microwatt
+	cd /path/to/microwatt
+	export FPGA_TARGET=verilator
+	export GHDLSYNTH=ghdl
+	make microwatt-verilator
+
+## Running the simulation
+Copy microwatt/arch/powerpc/boot/dtbImage.microwatt and sdram_init.bin into the microwatt directory.
+./microwatt-verilator sdram_init.bin dtbImage.microwatt