diff options
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/Kconfig | 7 | ||||
| -rw-r--r-- | arch/m68k/Makefile | 1 | ||||
| -rw-r--r-- | arch/m68k/emu/Makefile | 5 | ||||
| -rw-r--r-- | arch/m68k/emu/natfeat.c | 116 | ||||
| -rw-r--r-- | arch/m68k/include/asm/natfeat.h | 22 | ||||
| -rw-r--r-- | arch/m68k/kernel/setup.c | 5 |
6 files changed, 156 insertions, 0 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index cbe8b18e808..f668a5802a4 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -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 diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile index b06a7e3cbcd..b793163abc6 100644 --- a/arch/m68k/Makefile +++ b/arch/m68k/Makefile @@ -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/ diff --git a/arch/m68k/emu/Makefile b/arch/m68k/emu/Makefile new file mode 100644 index 00000000000..34cfa348ca2 --- /dev/null +++ b/arch/m68k/emu/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for Linux arch/m68k/emu source directory +# + +obj-y += natfeat.o diff --git a/arch/m68k/emu/natfeat.c b/arch/m68k/emu/natfeat.c new file mode 100644 index 00000000000..987d7732217 --- /dev/null +++ b/arch/m68k/emu/natfeat.c @@ -0,0 +1,116 @@ +/* + * 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; +} diff --git a/arch/m68k/include/asm/natfeat.h b/arch/m68k/include/asm/natfeat.h new file mode 100644 index 00000000000..a3521b80c3b --- /dev/null +++ b/arch/m68k/include/asm/natfeat.h @@ -0,0 +1,22 @@ +/* + * 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 */ diff --git a/arch/m68k/kernel/setup.c b/arch/m68k/kernel/setup.c index b3963ab3d14..334d8364037 100644 --- a/arch/m68k/kernel/setup.c +++ b/arch/m68k/kernel/setup.c @@ -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 |