From 4e634e196f542b76933d6bbe1861849557898683 Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Wed, 22 May 2024 15:04:30 -0600
Subject: rtl/gfx/firmware: implement mk build for bootrom

---
 rtl/gfx/firmware/mod.mk | 17 +++++++++++++++++
 rtl/gfx/mod.mk          |  3 ++-
 2 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100644 rtl/gfx/firmware/mod.mk

(limited to 'rtl/gfx')

diff --git a/rtl/gfx/firmware/mod.mk b/rtl/gfx/firmware/mod.mk
new file mode 100644
index 0000000..2a37a9c
--- /dev/null
+++ b/rtl/gfx/firmware/mod.mk
@@ -0,0 +1,17 @@
+cores := gfx_bootrom
+
+define core/gfx_bootrom
+  $(this)/cross := riscv32-none-elf-
+  $(this)/hooks := cc objcopy makehex obj
+
+  $(this)/cc_files := gfx_bootrom.S
+  $(this)/cc_flags  = -g -march=rv32imc -mabi=ilp32
+  $(this)/ld_flags := -nostartfiles -nostdlib
+  $(this)/ld_binary := gfx_bootrom
+
+  $(this)/objcopy_src := gfx_bootrom
+  $(this)/objcopy_obj := gfx_bootrom.bin
+
+  $(this)/makehex_src := gfx_bootrom.bin
+  $(this)/makehex_obj := gfx_bootrom.hex
+endef
diff --git a/rtl/gfx/mod.mk b/rtl/gfx/mod.mk
index 6ea0fb1..b10e624 100644
--- a/rtl/gfx/mod.mk
+++ b/rtl/gfx/mod.mk
@@ -1,7 +1,8 @@
 cores := gfx_shader_schedif
+subdirs := firmware
 
 define core
-  $(this)/deps := axilemu axixbar gfx_shader_schedif if_common picorv32
+  $(this)/deps := axilemu axixbar gfx_bootrom gfx_shader_schedif if_common picorv32
 
   $(this)/rtl_top := gfx_top
   $(this)/rtl_dirs := .
-- 
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