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

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
......@@ -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
......
......@@ -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/
......
#
# Makefile for Linux arch/m68k/emu source directory
#
obj-y += natfeat.o
/*
* 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;
}
/*
* 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 */
......@@ -42,6 +42,7 @@
#ifdef CONFIG_SUN3X
#include <asm/dvma.h>
#endif
#include <asm/natfeat.h>
#if !FPSTATESIZE || !NR_IRQS
#warning No CPU/platform type selected, your kernel will not work!
......@@ -324,6 +325,10 @@ void __init setup_arch(char **cmdline_p)
panic("No configuration setup");
}
#ifdef CONFIG_NATFEAT
nf_init();
#endif
paging_init();
#ifndef CONFIG_SUN3
......
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