avoid FireTOS hang on boot

BaS_gcc/BaS_gcc.files

@@ -609,3 +609,4 @@ tos/pci_test/include/MCF5475_USB.h
 tos/pci_test/include/MCF5475_XLB.h
 tos/pci_test/include/MCF5475.h
 tos/pci_test/include/pci.h
+memory_map.txt

BaS_gcc/Makefile

@@ -10,7 +10,7 @@
 
 # can be either "Y" or "N" (without quotes). "Y" for using the m68k-elf-, "N" for using the m68k-atari-mint
 # toolchain
-COMPILE_ELF=N
+COMPILE_ELF=Y
 
 ifeq (Y,$(COMPILE_ELF))
 TCPREFIX=m68k-elf-
@@ -51,7 +51,7 @@ CFLAGS_OPTIMIZED = -mcpu=5474 \
 		-Wa,--register-prefix-optional
 LDFLAGS=
 
-TRGTDIRS= ./firebee ./m5484lite ./m54455
+TRGTDIRS= ./firebee ./m5484lite
 OBJDIRS=$(patsubst %, %/objs,$(TRGTDIRS))
 TOOLDIR=util
 
@@ -266,7 +266,7 @@ $(1)_MAPFILE=$(1)/$$(basename $$(FLASH_EXEC)).map
 $(1)/$$(FLASH_EXEC): $(1)/$(LIBBAS) $(LDCSRC)
 	$(CPP) $(INCLUDE) -DOBJDIR=$(1)/objs -P -DFORMAT_ELF=$(FORMAT_ELF) -D$$(MACHINE) $(LDCSRC) -o $(1)/$$(LDCFILE)
 	#$(LD) --oformat $$(FORMAT) -Map $$($(1)_MAPFILE) --cref -T $(1)/$$(LDCFILE) $(LDLIBS) -o $$@
-	$(CC) -nostdlib -Wl,--oformat -Wl,$$(FORMAT) -Wl,-Map -Wl,$$($(1)_MAPFILE) -Wl,--cref -Wl,-T -Wl,$(1)/$$(LDCFILE) $(LDLIBS) -o $$@
+	$(CC) $$(CFLAGS) -nostdlib -Wl,--oformat -Wl,$$(FORMAT) -Wl,-Map -Wl,$$($(1)_MAPFILE) -Wl,--cref -Wl,-T -Wl,$(1)/$$(LDCFILE) $(LDLIBS) -o $$@
 ifeq ($(COMPILE_ELF),Y)
 	$(OBJCOPY) -O srec $$@ $$(basename $$@).s19
 else
@@ -278,7 +278,7 @@ $(1)_MAPFILE_RAM=$(1)/$$(basename $$(RAM_EXEC)).map
 $(1)/$$(RAM_EXEC): $(1)/$(LIBBAS) $(LDCSRC)
 	$(CPP) $(INCLUDE) -DCOMPILE_RAM -DOBJDIR=$(1)/objs -P -DFORMAT_ELF=$(FORMAT_ELF) -D$$(MACHINE) $(LDCSRC) -o $(1)/$$(LDRFILE)
 	#$(LD) $(LDFLAGS) --oformat $$(FORMAT) -Map $$($(1)_MAPFILE_RAM) --cref -T $(1)/$$(LDRFILE) $(LDLIBS) -o $$@
-	$(CC) -nostdlib -Wl,--oformat -Wl,$$(FORMAT) -Wl,-Map -Wl,$$($(1)_MAPFILE) -Wl,--cref -Wl,-T -Wl,$(1)/$$(LDRFILE) $(LDLIBS) -o $$@
+	$(CC) $$(CFLAGS) -nostdlib -Wl,--oformat -Wl,$$(FORMAT) -Wl,-Map -Wl,$$($(1)_MAPFILE) -Wl,--cref -Wl,-T -Wl,$(1)/$$(LDRFILE) $(LDLIBS) -o $$@
 ifeq ($(COMPILE_ELF),Y)
 	$(OBJCOPY) -O srec $$@ $$(basename $$@).s19
 else

BaS_gcc/include/version.h

@@ -29,7 +29,7 @@
  */
 
 #define MAJOR_VERSION	0
-#define MINOR_VERSION	87
+#define MINOR_VERSION	88
 
 
 #endif /* VERSION_H_ */

BaS_gcc/mcf5474.gdb

@@ -65,7 +65,7 @@ define run
 	continue
 end
 
-tbtr
+tr
 ib
-add-symbol-file ../emutos/emutos2.img 0xe00000
+#add-symbol-file ../emutos/emutos2.img 0xe00000
 #load firebee/ram.elf

BaS_gcc/memory_map.txt

@@ -0,0 +1,8 @@
+Firebee memory map
+==================
+
+		Virt. Start	Virt. End	Phys. Start	Phys. End
+ST-RAM		0x00000000	0x00dfffff	0x60000000	0x60dfffff
+TOS		0x00e00000	0x00efffff	0x00e00000	0x00efffff
+ST I/O area	0x00f00000	0x01000000	0xfff00000	0xffffffff
+TT-RAM		0x01000000	0x20ffffff	0x00000000	0x1fffffff

BaS_gcc/pci/pci.c

@@ -33,7 +33,7 @@
 #include "interrupts.h"
 #include "wait.h"
 
-#define DEBUG_PCI
+//#define DEBUG_PCI
 #ifdef DEBUG_PCI
 #define dbg(format, arg...) do { xprintf("DEBUG: %s(): " format, __FUNCTION__, ##arg); } while (0)
 #else
@@ -1131,7 +1131,7 @@ void init_eport(void)
 
     MCF_EPORT_EPDDR = 0;    /* clear data direction register. All pins as input */
     MCF_EPORT_EPFR = -1;    /* clear all EPORT interrupt flags */
-    // MCF_EPORT_EPIER = 0xfe; /* enable all EPORT interrupts (for now) */
+    MCF_EPORT_EPIER = 0xfe; /* enable all EPORT interrupts (for now) */
 }
 
 void init_xlbus_arbiter(void)

BaS_gcc/sys/BaS.c

@@ -423,16 +423,17 @@ void BaS(void)
 
     xprintf("finished\r\n");
     xprintf("enable video: ");
+
     /*
      * video setup (25MHz)
      */
-    * (volatile uint32_t *) (0xf0000410 + 0) = 0x032002ba;  /* horizontal 640x480 */
+    * (volatile uint32_t *) 0xf0000410 = 0x032002ba;  /* horizontal 640x480 */
-    * (volatile uint32_t *) (0xf0000410 + 4) = 0x020c020a;  /* vertical 640x480 */
+    * (volatile uint32_t *) 0xf0000414 = 0x020c020a;  /* vertical 640x480 */
-    * (volatile uint32_t *) (0xf0000410 + 8) = 0x0190015d;  /* horizontal 320x240 */
+    * (volatile uint32_t *) 0xf0000418 = 0x0190015d;  /* horizontal 320x240 */
-    * (volatile uint32_t *) (0xf0000410 + 12) = 0x020C020A; /* vertical 320x230 */
+    * (volatile uint32_t *) 0xf000041c = 0x020c020a; /* vertical 320x230 */
 
     /* fifo on, refresh on, ddrcs and cke on, video dac on */
-    * (volatile uint32_t *) (0xf0000410 - 0x20) = 0x01070002;
+    * (volatile uint32_t *) 0xf0000400 = 0x01070082;
 
     xprintf("finished\r\n");
 #endif /* MACHINE_FIREBEE */
@@ -442,7 +443,7 @@ void BaS(void)
     /*
      * memory setup
      */
-    memset((void *) 0x400, 0, 0x400);
+    memset((void *) 0x200, 0, 0x400);
 
 #if defined(MACHINE_FIREBEE)
     /* set Falcon bus control register */
@@ -483,6 +484,7 @@ void BaS(void)
     enable_coldfire_interrupts();
     MCF_INTC_IMRH = 0;
     MCF_INTC_IMRL = 0;
+
     dma_irq_enable();
     fec_irq_enable(0, 5, 1);
 
@@ -495,6 +497,37 @@ void BaS(void)
 
     set_ipl(7);     /* disable interrupts */
 
+    /*
+     * start FireTOS if DIP switch is set accordingly
+     */
+    if (!(DIP_SWITCH & (1 << 6)))
+    {
+        extern uint8_t _FIRETOS[];
+#define FIRETOS ((uint32_t)_FIRETOS) /* where FireTOS is stored in flash */
+
+        /* make sure MMU is disabled */
+        MCF_MMU_MMUCR = 0;  /* MMU off */
+        NOP();              /* force pipeline sync */
+
+        /* ST RAM */
+
+        * (uint32_t *) 0x42e = STRAM_END;   /* phystop TOS system variable */
+        * (uint32_t *) 0x420 = 0x752019f3;  /* memvalid TOS system variable */
+        * (uint32_t *) 0x43a = 0x237698aa;  /* memval2 TOS system variable */
+        * (uint32_t *) 0x51a = 0x5555aaaa;  /* memval3 TOS system variable */
+
+        /* TT-RAM */
+
+        * (uint32_t *) 0x5a4 = FASTRAM_END; /* ramtop TOS system variable */
+        * (uint32_t *) 0x5a8 = 0x1357bd13;  /* ramvalid TOS system variable */
+
+        xprintf("call FireTOS\r\n");
+        /* Jump into FireTOS */
+        typedef void void_func(void);
+        void_func* FireTOS = (void_func*) FIRETOS;
+        FireTOS();  // Should never return
+    }
+
     xprintf("call EmuTOS\r\n");
     struct rom_header *os_header = (struct rom_header *) TOS;
     os_header->initial_pc();

BaS_gcc/sys/exceptions.S

@@ -144,7 +144,7 @@
         subq.l  #8,sp
         movem.l d0/a5,(sp)                      // save registers
 
-        lea MCF_EPORT_EPFR,a5
+        lea     MCF_EPORT_EPFR,a5
         move.b  #\clr_int,(a5)                  // clear int pending
 
         movem.l (sp),d0/a5                      // restore registers

BaS_gcc/sys/sysinit.c

@@ -561,8 +561,7 @@ static void init_video_ddr(void) {
     _VRAM = 0000070022; /* load MR dll on */
     NOP();
 
-    * (uint32_t *) 0xf0000400 = 0x01070002; /* fifo on, refresh on, ddrcs und cke on, video dac on */
+    * (uint32_t *) 0xf0000400 = 0x01070082; /* fifo on, refresh on, ddrcs und cke on, video dac on, Falcon shift mode on */
-//    * (uint32_t *) 0xf0000400 = 0x0107820b; /* fifo on, refresh on, ddrcs und cke on, video dac on */
 
     xprintf("finished\r\n");
 }
@@ -940,7 +939,7 @@ static void clear_bss_segment(void)
 void initialize_hardware(void)
 {
     /* Test for FireTOS switch: DIP switch #5 up */
-#if defined(MACHINE_FIREBEE)
+#ifdef _NOT_USED_ // #if defined(MACHINE_FIREBEE)
     if (!(DIP_SWITCH & (1 << 6))) {
         /* Minimal hardware initialization */
         init_gpio();
@@ -958,6 +957,7 @@ void initialize_hardware(void)
 
         /* TT-RAM */
 
+        xprintf("FASTRAM_END = %p\r\n", FASTRAM_END);
         * (uint32_t *) 0x5a4 = FASTRAM_END; /* ramtop TOS system variable */
         * (uint32_t *) 0x5a8 = 0x1357bd13;  /* ramvalid TOS system variable */