driver interface to OS implemented and tested

BaS_gcc/sys/BaS.c

@@ -25,9 +25,9 @@
 #include <stdbool.h>
 
 #include "MCF5475.h"
-#include "MCF5475_SLT.h"
 #include "startcf.h"
 #include "sysinit.h"
+#include "util.h"
 #include "cache.h"
 #include "bas_printf.h"
 #include "bas_string.h"
@@ -56,8 +56,6 @@ extern uint8_t _EMUTOS[];
 extern uint8_t _EMUTOS_SIZE[];
 #define EMUTOS_SIZE ((uint32_t)_EMUTOS_SIZE) /* size of EmuTOS, in bytes */
 
-#define NOP() __asm__ __volatile__("nop\n\t" : : : "memory")	/* need this to force pipeline sync after MMUCR write */
-
 /*
  * check if it is possible to transfer data to PIC
  */

BaS_gcc/sys/exceptions.S

@@ -40,7 +40,6 @@
 		.extern _video_tlb
 		.extern _video_sbt
 		.extern _flush_and_invalidate_caches
-		.extern _xhdi_sd_install	/* trap #0 exception vector for installation of xhdi SD card driver */
 
 		/* PCI interrupt handlers */
 		.extern _irq5_handler
@@ -270,9 +269,9 @@ init_vec_loop:
 		lea		access(pc),a1		// set illegal access exception handler
 		move.l	a1,0x08(a0)
 		
-// trap #0 (without any parameters for now) is used to provide BaS' XHDI
-// routine address to EmuTOS.
-		lea		_xhdi_sd_install,a1
+		.extern	_get_bas_drivers
+// trap #0 (without any parameters for now) is used to provide BaS' driver addresses to the OS
+		lea		_get_bas_drivers(pc),a1
 		move.l	a1,0x80(a0)				// trap #0 exception vector
 
 #ifdef MACHINE_FIREBEE
@@ -439,7 +438,7 @@ zd_end:
 		move.l	(a7)+,d0
 		move.l	(a7)+,a0		
 		rte
-
+		
 #ifdef _NOT_USED_	
 linea:	
 		move.w	#0x2700,sr			// disable interrupt

BaS_gcc/sys/sysinit.c

@@ -1105,13 +1105,15 @@ void initialize_hardware(void)
 	dvi_on();
 #endif /* MACHINE_FIREBEE */
 	init_pci();
+	
+	/* do not try to init USB for now on the Firebee, it hangs the machine */
+#ifndef MACHINE_FIREBEE
 	init_usb();
+#endif
+
 #if MACHINE_FIREBEE
 	init_ac97();
 #endif /* MACHINE_FIREBEE */
-
-	//hexdump(0x6a000000, 8192);
-	xprintf("initialize and test DMA\r\n");
 	dma_init();
 
 	/* jump into the BaS */