From 71ae941a09aec9e9841ddf273868e5be680e5599 Mon Sep 17 00:00:00 2001
From: Markus Hitter <mah@jump-ing.de>
Date: Mon, 11 Nov 2013 11:37:31 +0100
Subject: [PATCH] Add simulation info for SimulAVR.

This shouldn't change the running binary at all, so it shouldn't
harm. However, it allows to run Teacup inside SimulAVR and accessing
Teacups' serial line through the console/terminal.

For detailed instructions, see http://reprap.org/wiki/SimulAVR .
---
 Makefile-AVR | 9 ++++++++-
 mendel.c     | 8 ++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/Makefile-AVR b/Makefile-AVR
index f021010..8be4173 100644
--- a/Makefile-AVR
+++ b/Makefile-AVR
@@ -127,7 +127,14 @@ CFLAGS += -finline-functions-called-once
 CFLAGS += -mcall-prologues
 
 LDFLAGS  = -Wl,--as-needed
-LDFLAGS += -Wl,--gc-sections
+# Doesn't work for simulavr, can't allow dead code removal.
+#LDFLAGS += -Wl,--gc-sections
+
+ifneq ($(realpath ../simulavr/src/simulavr_info.h),)
+  # Neccessary for simulavr support, doesn't hurt others.
+  CFLAGS += -DSIMINFO
+  LDFLAGS += -Wl,--section-start=.siminfo=0x900000
+endif
 
 LIBS  = -lm
 
diff --git a/mendel.c b/mendel.c
index 019a38e..0cca0a0 100644
--- a/mendel.c
+++ b/mendel.c
@@ -50,6 +50,14 @@
 #include	"intercom.h"
 #include "simulator.h"
 
+#ifdef SIMINFO
+  #include "../simulavr/src/simulavr_info.h"
+  SIMINFO_DEVICE("atmega644");
+  SIMINFO_CPUFREQUENCY(F_CPU);
+  SIMINFO_SERIAL_IN("D0", "-", BAUD);
+  SIMINFO_SERIAL_OUT("D1", "-", BAUD);
+#endif
+
 /// initialise all I/O - set pins as input or output, turn off unused subsystems, etc
 void io_init(void) {
 	// disable modules we don't use