From 9396a434c0dca1b9834ece27821e7eb4c0865bf7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20Fr=C3=B6schle?= <mfro@mubf.de>
Date: Sun, 21 Oct 2012 19:12:40 +0000
Subject: [PATCH] modified Makefile to generate an elf file that bdmctrl
 understands. added mcf5474.bdm to initialize firebee and flash (doesn't work
 yet for unknown reason)

---
 BaS_GNU/BaS_GNU/Makefile      |  2 ++
 BaS_GNU/BaS_GNU/mcf5474.bdm   | 41 +++++++++++++++++++++++++++++++++++
 BaS_GNU/BaS_GNU/sources/mmu.S |  4 ++--
 3 files changed, 45 insertions(+), 2 deletions(-)
 create mode 100755 BaS_GNU/BaS_GNU/mcf5474.bdm

diff --git a/BaS_GNU/BaS_GNU/Makefile b/BaS_GNU/BaS_GNU/Makefile
index d790abf..12550cd 100644
--- a/BaS_GNU/BaS_GNU/Makefile
+++ b/BaS_GNU/BaS_GNU/Makefile
@@ -17,6 +17,7 @@ TCPREFIX=m68k-atari-mint-
 CC=$(TCPREFIX)gcc
 LD=$(TCPREFIX)ld
 CPP=$(TCPREFIX)cpp
+OBJCOPY=$(TCPREFIX)objcopy
 
 INCLUDE=-Iinclude
 CFLAGS=-mcpu=5474 -Wall -Wno-multichar -Os -fomit-frame-pointer
@@ -68,6 +69,7 @@ $(RAM_EXEC): TARGET_ADDRESS=0x01000000
 $(FLASH_EXEC) $(RAM_EXEC): $(STRT_OBJ) $(OBJS)
 	$(CPP) -P -DTARGET_ADDRESS=$(TARGET_ADDRESS) $(LDCSRC) -o $(LDCFILE)
 	$(LD) --oformat srec -Map $(MAPFILE) --cref -T $(LDCFILE) -s -o $@
+	objcopy -I srec -O elf32-big --alt-machine-code 4 $@ $@.elf
 	
 # compile init_fpga with -mbitfield for testing purposes
 $(OBJDIR)/init_fpga.o:	CFLAGS += -mbitfield
diff --git a/BaS_GNU/BaS_GNU/mcf5474.bdm b/BaS_GNU/BaS_GNU/mcf5474.bdm
new file mode 100755
index 0000000..ae597c2
--- /dev/null
+++ b/BaS_GNU/BaS_GNU/mcf5474.bdm
@@ -0,0 +1,41 @@
+#!/usr/local/bin/bdmctrl
+#
+# firebee board initialization for bdmctrl 
+#
+open $1
+reset
+
+# notify flashlib that we have flash at address 0xE0000000, length 0x7FFFFF, plugin is flash29
+flash 0xE0000000 flash29
+# do not flash yet. First check if board can be initialized correctly
+
+# set VBR
+write-ctrl 0x0801 0x00000000
+
+# Turn on MBAR at 0xFF00_0000
+write-ctrl 0x0C0F 0xFF000000
+
+# Turn on RAMBAR0 at address FF10_0000 
+write-ctrl 0x0C04 0xFF100035
+
+# Turn on RAMBAR1 at address FF10_1000 
+write-ctrl 0x0C05 0xFF101035
+
+# Init CS0 (BootFLASH @ E000_0000 - E07F_FFFF 8Mbytes)
+write 0xFF000500 0xE0000000 4
+write 0xFF000508 0x00001180 4  # 16-bit port
+write 0xFF000504 0x007F0001 4
+
+# SDRAM Initialization @ 0000_0000 - 1FFF_FFFF 512Mbytes
+write 0xFF000004 0x000002AA 4	# SDRAMDS configuration
+write 0xFF000020 0x0000001A 4	# SDRAM CS0 configuration (128Mbytes 0000_0000 - 07FF_FFFF)
+write 0xFF000024 0x0800001A 4	# SDRAM CS1 configuration (128Mbytes 0800_0000 - 0FFF_FFFF)
+write 0xFF000028 0x1000001A 4	# SDRAM CS2 configuration (128Mbytes 1000_0000 - 17FF_FFFF)
+write 0xFF00002C 0x1800001A 4	# SDRAM CS3 configuration (128Mbytes 1800_0000 - 1FFF_FFFF)
+write 0xFF000108 0x53722938 4	# SDCFG1
+write 0xFF00010C 0x24330000 4	# SDCFG2
+
+wait
+# load -v ram.s19	# unfortunately, this seems to work only with elf files
+load -v bas.s19.elf
+
diff --git a/BaS_GNU/BaS_GNU/sources/mmu.S b/BaS_GNU/BaS_GNU/sources/mmu.S
index e1e1b11..2485c92 100644
--- a/BaS_GNU/BaS_GNU/sources/mmu.S
+++ b/BaS_GNU/BaS_GNU/sources/mmu.S
@@ -130,8 +130,8 @@ _mmu_init:
 		move.l	d3,MCF_MMU_MMUOR						// MMU update instruction  
 		
 		move.l	#0x2000,d0
-		move.l	d0,_video_tlb							// setze page als video page
-  		clr.l	_video_sbt			// zeit l�schen
+		move.l	d0,_video_tlb							// set page as video page
+  		clr.l	_video_sbt								// clear time
 //-------------------------------------------------------------------------------------
 // 00e0'0000 locked		
  		move.l	#0x00e00000|std_mmutr,d0