Add some simplified structure definitions the way NetBSD does.

Implement cpu detection using Exec's AttnFlags.
Now panics a little later.

Note you need to tell UAE to emulate a 040 now (020 not supported) with -C4 to boot.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38956 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/boot/platform/amiga_m68k/cpu.cpp

@@ -36,8 +36,43 @@
 static status_t
 check_cpu_features()
 {
-	//TODO
+	uint16 AttnFlags = SysBase->AttnFlags;
-	return B_ERROR;
+	int cpu = 0;
+	int fpu = 0;
+
+	// check fpu flags first, since they are also set for 040
+
+	if (AttnFlags & AFF_68881)
+			fpu = 68881;
+	if (AttnFlags & AFF_68882)
+			fpu = 68882;
+
+	//if (AttnFlags & AFF_68010)
+	//	return B_ERROR;
+	//if (AttnFlags & AFF_68020)
+	//	return B_ERROR;
+	if (AttnFlags & AFF_68030)
+			cpu = 68030;
+	if (AttnFlags & AFF_68040)
+			cpu = fpu = 68040;
+	//if (AttnFlags & AFF_FPU40)
+	//		;
+
+	//panic("cpu %d fpu %d flags 0x%04x", cpu, fpu, AttnFlags);
+	if (!cpu || !fpu)
+		return B_ERROR;
+
+	gKernelArgs.arch_args.cpu_type = cpu;
+	gKernelArgs.arch_args.mmu_type = cpu;
+	gKernelArgs.arch_args.fpu_type = fpu;
+
+	//	if (AttnFlags & AFF_68060) true
+	gKernelArgs.arch_args.has_lpstop = false;
+
+	gKernelArgs.arch_args.platform = M68K_PLATFORM_AMIGA;
+	gKernelArgs.arch_args.machine = 0; //XXX
+
+	return B_OK;
 }
 
 #warning M68K: move and implement system_time()
@@ -65,7 +100,7 @@ extern "C" void
 cpu_init()
 {
 	if (check_cpu_features() != B_OK)
-		panic("You need a 68020 or higher in order to boot!\n");
+		panic("You need a 68030 or higher in order to boot!\n");
 
 	gKernelArgs.num_cpus = 1;
 		// this will eventually be corrected later on

src/system/boot/platform/amiga_m68k/rom_calls.h

@@ -969,10 +969,38 @@ typedef void *APTR;
 
 // <exec/library.h>
 
-struct Library;
+// cf.
+// http://ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/src/sys/arch/amiga/stand/bootblock/boot/amigatypes.h
+
+struct Library {
+	uint8	dummy1[10];
+	uint16	Version, Revision;
+	uint8	dummy2[34-24];
+};
 
 // <exec/execbase.h>
 
+struct MemHead {
+	struct MemHead	*next;
+	uint8	dummy1[9-4];
+	uint8	Pri;
+	uint8	dummy2[14-10];
+	uint16	Attribs;
+	uint32	First, Lower, Upper, Free;
+};
+
+struct ExecBase {
+	struct Library	LibNode;
+	uint8	dummy1[296-34];
+	uint16	AttnFlags;
+	uint8	dummy2[300-298];
+	void	*ResModules;
+	uint8	dummy3[322-304];
+	struct MemHead	*MemList;
+	uint8	dummy4[568-326];
+	uint32	EClockFreq;
+	uint8	dummy5[632-334];
+} _PACKED;
 
 #endif /* __ASSEMBLER__ */
 
@@ -994,6 +1022,29 @@ struct Library;
 
 // <exec/io.h>
 
+/*
+struct IORequest {
+	struct Message	io_Message;
+	struct Device	*io_Device;
+	struct Unit		*io_Unit;
+	uint16			io_Command;
+	uint8			io_Flags;
+	int8			io_Error;
+};
+
+struct IOStdReq {
+	struct Message	io_Message;
+	struct Device	*io_Device;
+	struct Unit		*io_Unit;
+	uint16			io_Command;
+	uint8			io_Flags;
+	int8			io_Error;
+	uint32			io_Actual;
+	uint32			io_Length;
+	void			*io_Data;
+	uint32			io_Offset;
+};
+*/
 
 #endif /* __ASSEMBLER__ */
 
@@ -1045,7 +1096,7 @@ struct Library;
 
 #ifndef __ASSEMBLER__
 
-extern Library *EXEC_BASE_NAME;
+extern ExecBase *EXEC_BASE_NAME;
 
 #define AllocAbs(par1, last) \
 	LP2(0xcc, APTR, AllocAbs, unsigned long, par1, d0, APTR, last, a1, \

src/system/boot/platform/amiga_m68k/start.cpp

@@ -120,7 +120,6 @@ platform_exit(void)
 extern "C" void
 _start(void)
 {
-	panic("plop %d", 1234);
 	stage2_args args;
 
 	//asm("cld");			// Ain't nothing but a GCC thang.
@@ -137,6 +136,7 @@ _start(void)
 	console_init();
 	dprintf("ramtop   = %p\n", NULL);
 	cpu_init();
+	panic("plop %d", 1234);
 	mmu_init();
 
 	// wait a bit to give the user the opportunity to press a key