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Commit 65cd577d authored by Petr Stehlik's avatar Petr Stehlik Committed by Geert Uytterhoeven
Browse files

m68k/atari: Initial ARAnyM support 

Add improved support for running under the ARAnyM emulator
(Atari Running on Any Machine - http://aranym.org/

).

[michael, geert: Cleanups and updates]

Signed-off-by: default avatarPetr Stehlik <pstehlik@sophics.cz>
Signed-off-by: default avatarMichael Schmitz <schmitz@debian.org>
Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
parent 93ff9542

arch/m68k/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -240,6 +240,13 @@ config SUN3 


	  If you don't want to compile a kernel exclusively for a Sun 3, say N.



config NATFEAT

	bool "ARAnyM emulator support"

	depends on ATARI

	help

	  This option enables support for ARAnyM native features, such as

	  access to a disk image as /dev/hda.



comment "Processor type"



config M68020

arch/m68k/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -76,6 +76,7 @@ core-$(CONFIG_MVME16x) += arch/m68k/mvme16x/ 
core-$(CONFIG_BVME6000)		+= arch/m68k/bvme6000/

core-$(CONFIG_SUN3X)		+= arch/m68k/sun3x/	arch/m68k/sun3/

core-$(CONFIG_SUN3)		+= arch/m68k/sun3/	arch/m68k/sun3/prom/

core-$(CONFIG_NATFEAT)		+= arch/m68k/emu/

core-$(CONFIG_M68040)		+= arch/m68k/fpsp040/

core-$(CONFIG_M68060)		+= arch/m68k/ifpsp060/

core-$(CONFIG_M68KFPU_EMU)	+= arch/m68k/math-emu/

arch/m68k/emu/Makefile

0 → 100644
+5 −0
Original line number Diff line number Diff line 
#

# Makefile for Linux arch/m68k/emu source directory

#



obj-y			+= natfeat.o

arch/m68k/emu/natfeat.c

0 → 100644
+116 −0
Original line number Diff line number Diff line 
/*

 * natfeat.c - ARAnyM hardware support via Native Features (natfeats)

 *

 * Copyright (c) 2005 Petr Stehlik of ARAnyM dev team

 *

 * Reworked for Linux by Roman Zippel <zippel@linux-m68k.org>

 *

 * This software may be used and distributed according to the terms of

 * the GNU General Public License (GPL), incorporated herein by reference.

 */



#include <linux/types.h>

#include <linux/console.h>

#include <linux/string.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/io.h>

#include <asm/machdep.h>

#include <asm/natfeat.h>



asm("\n"

"	.global nf_get_id,nf_call\n"

"nf_get_id:\n"

"	.short	0x7300\n"

"	rts\n"

"nf_call:\n"

"	.short	0x7301\n"

"	rts\n"

"1:	moveq.l	#0,%d0\n"

"	rts\n"

"	.section __ex_table,\"a\"\n"

"	.long	nf_get_id,1b\n"

"	.long	nf_call,1b\n"

"	.previous");

EXPORT_SYMBOL_GPL(nf_get_id);

EXPORT_SYMBOL_GPL(nf_call);



static int stderr_id;



static void nf_write(struct console *co, const char *str, unsigned int count)

{

	char buf[68];



	buf[64] = 0;

	while (count > 64) {

		memcpy(buf, str, 64);

		nf_call(stderr_id, buf);

		str += 64;

		count -= 64;

	}

	memcpy(buf, str, count);

	buf[count] = 0;

	nf_call(stderr_id, buf);

}



void nfprint(const char *fmt, ...)

{

	static char buf[256];

	va_list ap;

	int n;



	va_start(ap, fmt);

	n = vsnprintf(buf, 256, fmt, ap);

	nf_call(nf_get_id("NF_STDERR"), buf);

	va_end(ap);

}



static struct console nf_console_driver = {

	.name	= "debug",

	.write	= nf_write,

	.flags	= CON_PRINTBUFFER,

	.index	= -1,

};



static int __init nf_debug_setup(char *arg)

{

	if (strcmp(arg, "emu"))

		return 0;



	stderr_id = nf_get_id("NF_STDERR");

	if (stderr_id)

		register_console(&nf_console_driver);

	return 0;

}



early_param("debug", nf_debug_setup);



static void nf_poweroff(void)

{

	long id = nf_get_id("NF_SHUTDOWN");



	if (id)

		nf_call(id);

}



void nf_init(void)

{

	unsigned long id, version;

	char buf[256];



	id = nf_get_id("NF_VERSION");

	if (!id)

		return;

	version = nf_call(id);



	id = nf_get_id("NF_NAME");

	if (!id)

		return;

	nf_call(id, buf, 256);

	buf[255] = 0;



	pr_info("NatFeats found (%s, %lu.%lu)\n", buf, version >> 16,

		version & 0xffff);



	mach_power_off = nf_poweroff;

}

arch/m68k/include/asm/natfeat.h

0 → 100644
+22 −0
Original line number Diff line number Diff line 
/*

 * ARAnyM hardware support via Native Features (natfeats)

 *

 * Copyright (c) 2005 Petr Stehlik of ARAnyM dev team

 *

 * This software may be used and distributed according to the terms of

 * the GNU General Public License (GPL), incorporated herein by reference.

 */



#ifndef _NATFEAT_H

#define _NATFEAT_H



long nf_get_id(const char *feature_name);

long nf_call(long id, ...);



void nf_init(void);

void nf_shutdown(void);



void nfprint(const char *fmt, ...)

	__attribute__ ((format (printf, 1, 2)));



# endif /* _NATFEAT_H */