3 files changed, 40 insertions, 2 deletions
diff --git a/platform/wavelet3d/host_sw/mod.mk b/platform/wavelet3d/host_sw/mod.mk
new file mode 100644
index 0000000..b68c47d
--- /dev/null
+++ b/platform/wavelet3d/host_sw/mod.mk
@@ -0,0 +1,34 @@
+cores := w3d_host_flash w3d_host_sw w3d_picolibc
+
+define core/w3d_host_sw
+  $(this)/deps := w3d_picolibc
+  $(this)/cross := riscv32-none-elf-
+  $(this)/hooks := cc objcopy obj
+
+  $(this)/obj_deps := picolibc/picolibc.specs
+
+  $(this)/cc_files := main.c
+  $(this)/cc_flags  = -g -march=rv32imafc -mabi=ilp32f --specs=$$(obj)/picolibc/picolibc.specs
+  $(this)/ld_flags := --oslib=semihost
+  $(this)/ld_binary := w3d_host_flash
+
+  $(this)/objcopy_src := w3d_host_flash
+  $(this)/objcopy_obj := w3d_host_flash.bin
+endef
+
+define core/w3d_picolibc
+  $(this)/hooks := meson obj
+
+  $(this)/obj_deps := /$(here)cross-riscv32-none-elf.txt
+
+  $(this)/meson_src := picolibc
+  $(this)/meson_objs := picolibc/picolibc.specs
+
+  $(this)/meson_args = \
+    -Dincludedir=include \
+    -Dlibdir=lib \
+    -Dspecsdir=. \
+    -Dmultilib=false \
+    -Dprefix=$$(src)/$$(obj)/picolibc \
+    --cross-file $(here)cross-riscv32-none-elf.txt
+endef
diff --git a/platform/wavelet3d/main.cpp b/platform/wavelet3d/main.cpp
index 2771551..8cd3989 100644
--- a/platform/wavelet3d/main.cpp
+++ b/platform/wavelet3d/main.cpp
@@ -89,7 +89,7 @@ int main(int argc, char **argv)
 
 	auto dram = std::make_unique<unsigned[]>(DRAM_SIZE);
 
-	constexpr const char *FLASH_IMG_FILE = "host_flash.bin";
+	constexpr const char *FLASH_IMG_FILE = "w3d_host_flash.bin";
 
 	FILE *flash_img = std::fopen(FLASH_IMG_FILE, "rb");
 	if (!flash_img) {
diff --git a/platform/wavelet3d/mod.mk b/platform/wavelet3d/mod.mk
index 77382f1..b78f01a 100644
--- a/platform/wavelet3d/mod.mk
+++ b/platform/wavelet3d/mod.mk
@@ -1,10 +1,14 @@
+subdirs := host_sw
+
 define core
-  $(this)/deps := axixbar if_common gfx
+  $(this)/deps := axixbar if_common gfx w3d_host_sw
 
   $(this)/rtl_top := w3d_top
   $(this)/rtl_dirs := .
   $(this)/rtl_files := w3d_top.sv
 
+  $(this)/obj_deps := gfx_bootrom.hex w3d_host_flash.bin
+
   $(this)/vl_main := main.cpp remote_jtag.cpp
   $(this)/vl_pkgconfig := sdl2
 endef