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65cd577d5e
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: Petr Stehlik <pstehlik@sophics.cz> Signed-off-by: Michael Schmitz <schmitz@debian.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
117 lines
2.1 KiB
C
117 lines
2.1 KiB
C
/*
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* natfeat.c - ARAnyM hardware support via Native Features (natfeats)
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*
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* Copyright (c) 2005 Petr Stehlik of ARAnyM dev team
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*
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* Reworked for Linux by Roman Zippel <zippel@linux-m68k.org>
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*
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* This software may be used and distributed according to the terms of
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* the GNU General Public License (GPL), incorporated herein by reference.
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*/
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#include <linux/types.h>
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#include <linux/console.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/io.h>
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#include <asm/machdep.h>
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#include <asm/natfeat.h>
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asm("\n"
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" .global nf_get_id,nf_call\n"
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"nf_get_id:\n"
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" .short 0x7300\n"
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" rts\n"
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"nf_call:\n"
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" .short 0x7301\n"
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" rts\n"
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"1: moveq.l #0,%d0\n"
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" rts\n"
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" .section __ex_table,\"a\"\n"
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" .long nf_get_id,1b\n"
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" .long nf_call,1b\n"
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" .previous");
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EXPORT_SYMBOL_GPL(nf_get_id);
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EXPORT_SYMBOL_GPL(nf_call);
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static int stderr_id;
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static void nf_write(struct console *co, const char *str, unsigned int count)
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{
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char buf[68];
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buf[64] = 0;
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while (count > 64) {
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memcpy(buf, str, 64);
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nf_call(stderr_id, buf);
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str += 64;
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count -= 64;
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}
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memcpy(buf, str, count);
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buf[count] = 0;
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nf_call(stderr_id, buf);
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}
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void nfprint(const char *fmt, ...)
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{
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static char buf[256];
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va_list ap;
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int n;
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va_start(ap, fmt);
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n = vsnprintf(buf, 256, fmt, ap);
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nf_call(nf_get_id("NF_STDERR"), buf);
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va_end(ap);
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}
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static struct console nf_console_driver = {
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.name = "debug",
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.write = nf_write,
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.flags = CON_PRINTBUFFER,
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.index = -1,
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};
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static int __init nf_debug_setup(char *arg)
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{
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if (strcmp(arg, "emu"))
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return 0;
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stderr_id = nf_get_id("NF_STDERR");
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if (stderr_id)
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register_console(&nf_console_driver);
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return 0;
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}
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early_param("debug", nf_debug_setup);
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static void nf_poweroff(void)
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{
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long id = nf_get_id("NF_SHUTDOWN");
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if (id)
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nf_call(id);
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}
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void nf_init(void)
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{
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unsigned long id, version;
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char buf[256];
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id = nf_get_id("NF_VERSION");
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if (!id)
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return;
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version = nf_call(id);
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id = nf_get_id("NF_NAME");
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if (!id)
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return;
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nf_call(id, buf, 256);
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buf[255] = 0;
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pr_info("NatFeats found (%s, %lu.%lu)\n", buf, version >> 16,
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version & 0xffff);
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mach_power_off = nf_poweroff;
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}
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