1/* 2 * Platform dependent support for HP simulator. 3 * 4 * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co 5 * David Mosberger-Tang <davidm@hpl.hp.com> 6 * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com> 7 */ 8 9#include <linux/init.h> 10#include <linux/kernel.h> 11#include <linux/param.h> 12#include <linux/string.h> 13#include <linux/types.h> 14#include <linux/tty.h> 15#include <linux/kdev_t.h> 16#include <linux/console.h> 17 18#include <asm/delay.h> 19#include <asm/irq.h> 20#include <asm/pal.h> 21#include <asm/machvec.h> 22#include <asm/pgtable.h> 23#include <asm/sal.h> 24#include <asm/hpsim.h> 25 26#include "hpsim_ssc.h" 27 28static int simcons_init (struct console *, char *); 29static void simcons_write (struct console *, const char *, unsigned); 30static struct tty_driver *simcons_console_device (struct console *, int *); 31 32static struct console hpsim_cons = { 33 .name = "simcons", 34 .write = simcons_write, 35 .device = simcons_console_device, 36 .setup = simcons_init, 37 .flags = CON_PRINTBUFFER, 38 .index = -1, 39}; 40 41static int 42simcons_init (struct console *cons, char *options) 43{ 44 return 0; 45} 46 47static void 48simcons_write (struct console *cons, const char *buf, unsigned count) 49{ 50 unsigned long ch; 51 52 while (count-- > 0) { 53 ch = *buf++; 54 ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR); 55 if (ch == '\n') 56 ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR); 57 } 58} 59 60static struct tty_driver *simcons_console_device (struct console *c, int *index) 61{ 62 *index = c->index; 63 return hp_simserial_driver; 64} 65 66int simcons_register(void) 67{ 68 if (!ia64_platform_is("hpsim")) 69 return 1; 70 71 if (hpsim_cons.flags & CON_ENABLED) 72 return 1; 73 74 register_console(&hpsim_cons); 75 return 0; 76} 77