From f122fa70e30a7d7744b38fa22bd1d5aa949e8277 Mon Sep 17 00:00:00 2001
From: Wojciech Kosior <kwojtus@protonmail.com>
Date: Thu, 24 Dec 2020 09:22:34 +0100
Subject: prepare makefile infrastructure for writing examples

---
 models/flash_memory.v         | 9 +++++++--
 models/soc_with_peripherals.v | 7 +++++--
 2 files changed, 12 insertions(+), 4 deletions(-)

(limited to 'models')

diff --git a/models/flash_memory.v b/models/flash_memory.v
index 3b6c659..43d6c99 100644
--- a/models/flash_memory.v
+++ b/models/flash_memory.v
@@ -63,8 +63,13 @@ module W25Q16BV_flash
 
    parameter memory_size = 1024 * 1024 * 2; /* 2 megabytes */
    reg [7:0] 	memory [memory_size - 1 : 0];
-   initial
-     $readmemh(INITIAL_CONTENTS_FILE, memory, 0, BYTES_TO_INITIALIZE - 1);
+
+   generate
+      if (BYTES_TO_INITIALIZE) begin
+	 initial
+	   $readmemh(INITIAL_CONTENTS_FILE, memory, 0, BYTES_TO_INITIALIZE - 1);
+      end
+   endgenerate
 
    always @ (posedge sck) begin
       if (!powered_up && power_up_time + power_up_wait_time < $time) begin
diff --git a/models/soc_with_peripherals.v b/models/soc_with_peripherals.v
index 975c002..40ee341 100644
--- a/models/soc_with_peripherals.v
+++ b/models/soc_with_peripherals.v
@@ -9,8 +9,10 @@
 
 module soc_with_peripherals
   #(
-    parameter FONT_FILE = "../design/font.mem",
-    parameter EMBEDDED_ROM_FILE = "../design/rom.mem",
+    parameter DESIGN_DIR = "../../design/",
+    parameter FONT_FILE = {DESIGN_DIR, "font.mem"},
+    parameter EMBEDDED_ROM_WORDS_COUNT = "error, rom words count not given",
+    parameter EMBEDDED_ROM_FILE = {DESIGN_DIR, "rom.mem"},
     parameter SPI_ROM_WORDS_COUNT = 0,
     parameter SPI_ROM_FILE = "/dev/zero"
     )
@@ -79,6 +81,7 @@ module soc_with_peripherals
    soc
      #(
        .FONT_FILE(FONT_FILE),
+       .ROM_WORDS_COUNT(EMBEDDED_ROM_WORDS_COUNT),
        .ROM_FILE(EMBEDDED_ROM_FILE)
        ) soc
        (
-- 
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