[people/ms/u-boot.git] / drivers / keyboard.c

/***********************************************************************
 *
 * (C) Copyright 2004
 * DENX Software Engineering
 * Wolfgang Denk, wd@denx.de
 * All rights reserved.
 *
 * Keyboard driver
 *
 ***********************************************************************/

#include <common.h>

#ifdef CONFIG_PS2KBD

#include <devices.h>
#include <keyboard.h>

#undef KBG_DEBUG

#ifdef KBG_DEBUG
#define	PRINTF(fmt,args...)	printf (fmt ,##args)
#else
#define PRINTF(fmt,args...)
#endif


#define	DEVNAME			"kbd"

#define	LED_SCR			0x01	/* scroll lock led */
#define	LED_CAP			0x04	/* caps lock led */
#define	LED_NUM			0x02	/* num lock led */

#define	KBD_BUFFER_LEN		0x20  /* size of the keyboardbuffer */

#if defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || defined(CONFIG_MPC8555)
int ps2ser_check(void);
#endif

static volatile char kbd_buffer[KBD_BUFFER_LEN];
static volatile int in_pointer = 0;
static volatile int out_pointer = 0;

static unsigned char leds = 0;
static unsigned char num_lock = 0;
static unsigned char caps_lock = 0;
static unsigned char scroll_lock = 0;
static unsigned char shift = 0;
static unsigned char ctrl = 0;
static unsigned char alt = 0;
static unsigned char e0 = 0;

/******************************************************************
 * Queue handling
 ******************************************************************/

/* puts character in the queue and sets up the in and out pointer */
static void kbd_put_queue(char data)
{
	if((in_pointer+1)==KBD_BUFFER_LEN) {
		if(out_pointer==0) {
			return; /* buffer full */
		} else{
			in_pointer=0;
		}
	} else {
		if((in_pointer+1)==out_pointer)
			return; /* buffer full */
		in_pointer++;
	}
	kbd_buffer[in_pointer]=data;
	return;
}

/* test if a character is in the queue */
static int kbd_testc(void)
{
#if defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || defined(CONFIG_MPC8555)
	/* no ISR is used, so received chars must be polled */
	ps2ser_check();
#endif
	if(in_pointer==out_pointer)
		return(0); /* no data */
	else
		return(1);
}

/* gets the character from the queue */
static int kbd_getc(void)
{
	char c;
	while(in_pointer==out_pointer) {
#if defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || defined(CONFIG_MPC8555)
	/* no ISR is used, so received chars must be polled */
	ps2ser_check();
#endif
	;}
	if((out_pointer+1)==KBD_BUFFER_LEN)
		out_pointer=0;
	else
		out_pointer++;
	c=kbd_buffer[out_pointer];
	return (int)c;

}

/* Simple translation table for the keys */

static unsigned char kbd_plain_xlate[] = {
	0xff,0x1b, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=','\b','\t',	/* 0x00 - 0x0f */
	 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']','\r',0xff, 'a', 's',	/* 0x10 - 0x1f */
	 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';','\'', '`',0xff,'\\', 'z', 'x', 'c', 'v',	/* 0x20 - 0x2f */
	 'b', 'n', 'm', ',', '.', '/',0xff,0xff,0xff, ' ',0xff,0xff,0xff,0xff,0xff,0xff,	/* 0x30 - 0x3f */
	0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1',	/* 0x40 - 0x4f */
	 '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,  /* 0x50 - 0x5F */
	'\r',0xff,0xff
	};

static unsigned char kbd_shift_xlate[] = {
	0xff,0x1b, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+','\b','\t',	/* 0x00 - 0x0f */
	 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}','\r',0xff, 'A', 'S',	/* 0x10 - 0x1f */
	 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~',0xff, '|', 'Z', 'X', 'C', 'V',	/* 0x20 - 0x2f */
	 'B', 'N', 'M', '<', '>', '?',0xff,0xff,0xff, ' ',0xff,0xff,0xff,0xff,0xff,0xff,	/* 0x30 - 0x3f */
	0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1',	/* 0x40 - 0x4f */
	 '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,  /* 0x50 - 0x5F */
	'\r',0xff,0xff
	};

static unsigned char kbd_ctrl_xlate[] = {
	0xff,0x1b, '1',0x00, '3', '4', '5',0x1E, '7', '8', '9', '0',0x1F, '=','\b','\t',	/* 0x00 - 0x0f */
	0x11,0x17,0x05,0x12,0x14,0x18,0x15,0x09,0x0f,0x10,0x1b,0x1d,'\n',0xff,0x01,0x13,	/* 0x10 - 0x1f */
	0x04,0x06,0x08,0x09,0x0a,0x0b,0x0c, ';','\'', '~',0x00,0x1c,0x1a,0x18,0x03,0x16,	/* 0x20 - 0x2f */
	0x02,0x0e,0x0d, '<', '>', '?',0xff,0xff,0xff,0x00,0xff,0xff,0xff,0xff,0xff,0xff,	/* 0x30 - 0x3f */
	0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1',	/* 0x40 - 0x4f */
	 '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,  /* 0x50 - 0x5F */
	'\r',0xff,0xff
	};


void handle_scancode(unsigned char scancode)
{
	unsigned char keycode;

	/*  Convert scancode to keycode */
	PRINTF("scancode %x\n",scancode);
	if(scancode==0xe0) {
		e0=1; /* special charakters */
		return;
	}
	if(e0==1) {
		e0=0; /* delete flag */
		if(!(	((scancode&0x7F)==0x38)|| /* the right ctrl key */
					((scancode&0x7F)==0x1D)|| /* the right alt key */
					((scancode&0x7F)==0x35)||	/* the right '/' key */
					((scancode&0x7F)==0x1C) ))  /* the right enter key */
			/* we swallow unknown e0 codes */
			return;
	}
	/* special cntrl keys */
	switch(scancode) {
	case 0x2A:
	case 0x36: /* shift pressed */
		shift=1;
		return; /* do nothing else */
	case 0xAA:
	case 0xB6: /* shift released */
		shift=0;
		return; /* do nothing else */
	case 0x38: /* alt pressed */
		alt=1;
		return; /* do nothing else */
	case 0xB8: /* alt released */
		alt=0;
		return; /* do nothing else */
	case 0x1d: /* ctrl pressed */
		ctrl=1;
		return; /* do nothing else */
	case 0x9d: /* ctrl released */
		ctrl=0;
		return; /* do nothing else */
	case 0x46: /* scrollock pressed */
		scroll_lock=~scroll_lock;
		if(scroll_lock==0)
			leds&=~LED_SCR; /* switch LED off */
		else
			leds|=LED_SCR; /* switch on LED */
		pckbd_leds(leds);
		return; /* do nothing else */
	case 0x3A: /* capslock pressed */
		caps_lock=~caps_lock;
		if(caps_lock==0)
			leds&=~LED_CAP; /* switch caps_lock off */
		else
			leds|=LED_CAP; /* switch on LED */
		pckbd_leds(leds);
		return;
	case 0x45: /* numlock pressed */
		num_lock=~num_lock;
		if(num_lock==0)
			leds&=~LED_NUM; /* switch LED off */
		else
			leds|=LED_NUM;  /* switch on LED */
		pckbd_leds(leds);
		return;
	case 0xC6: /* scroll lock released */
	case 0xC5: /* num lock released */
	case 0xBA: /* caps lock released */
		return; /* just swallow */
	}
#if 1
	if((scancode&0x80)==0x80) /* key released */
		return;
#else
	if((scancode&0x80)==0x00) /* key pressed */
		return;
	scancode &= ~0x80;
#endif
	/* now, decide which table we need */
	if(scancode > (sizeof(kbd_plain_xlate)/sizeof(kbd_plain_xlate[0]))) { /* scancode not in list */
		PRINTF("unkown scancode %X\n",scancode);
		return; /* swallow it */
	}
	/* setup plain code first */
	keycode=kbd_plain_xlate[scancode];
	if(caps_lock==1) { /* caps_lock is pressed, overwrite plain code */
		if(scancode > (sizeof(kbd_shift_xlate)/sizeof(kbd_shift_xlate[0]))) { /* scancode not in list */
			PRINTF("unkown caps-locked scancode %X\n",scancode);
			return; /* swallow it */
		}
		keycode=kbd_shift_xlate[scancode];
		if(keycode<'A') { /* we only want the alphas capital */
			keycode=kbd_plain_xlate[scancode];
		}
	}
	if(shift==1) { /* shift overwrites caps_lock */
		if(scancode > (sizeof(kbd_shift_xlate)/sizeof(kbd_shift_xlate[0]))) { /* scancode not in list */
			PRINTF("unkown shifted scancode %X\n",scancode);
			return; /* swallow it */
		}
		keycode=kbd_shift_xlate[scancode];
	}
	if(ctrl==1) { /* ctrl overwrites caps_lock and shift */
		if(scancode > (sizeof(kbd_ctrl_xlate)/sizeof(kbd_ctrl_xlate[0]))) { /* scancode not in list */
			PRINTF("unkown ctrl scancode %X\n",scancode);
			return; /* swallow it */
		}
		keycode=kbd_ctrl_xlate[scancode];
	}
	/* check if valid keycode */
	if(keycode==0xff) {
		PRINTF("unkown scancode %X\n",scancode);
		return; /* swallow unknown codes */
	}

	kbd_put_queue(keycode);
	PRINTF("%x\n",keycode);
}

/******************************************************************
 * Init
 ******************************************************************/

#ifdef CFG_CONSOLE_OVERWRITE_ROUTINE
extern int overwrite_console (void);
#define OVERWRITE_CONSOLE overwrite_console ()
#else
#define OVERWRITE_CONSOLE 0
#endif /* CFG_CONSOLE_OVERWRITE_ROUTINE */

int kbd_init (void)
{
	int error;
  	device_t kbddev ;
	char *stdinname  = getenv ("stdin");

	if(kbd_init_hw()==-1)
		return -1;
  	memset (&kbddev, 0, sizeof(kbddev));
  	strcpy(kbddev.name, DEVNAME);
  	kbddev.flags =  DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
  	kbddev.putc = NULL ;
	kbddev.puts = NULL ;
	kbddev.getc = kbd_getc ;
	kbddev.tstc = kbd_testc ;

 	error = device_register (&kbddev);
	if(error==0) {
		/* check if this is the standard input device */
		if(strcmp(stdinname,DEVNAME)==0) {
			/* reassign the console */
			if(OVERWRITE_CONSOLE) {
				return 1;
			}
			error=console_assign(stdin,DEVNAME);
			if(error==0)
				return 1;
			else
				return error;
		}
		return 1;
	}
	return error;
}

#endif /* CONFIG_PS2KBD */
Commit	Line	Data
1c43771b WD	1	/***********************************************************************
	2	*
	3	* (C) Copyright 2004
	4	* DENX Software Engineering
	5	* Wolfgang Denk, wd@denx.de
	6	* All rights reserved.
	7	*
	8	* Keyboard driver
	9	*
	10	***********************************************************************/
	11
	12	#include <common.h>
	13
	14	#ifdef CONFIG_PS2KBD
	15
	16	#include <devices.h>
	17	#include <keyboard.h>
	18
	19	#undef KBG_DEBUG
	20
	21	#ifdef KBG_DEBUG
	22	#define PRINTF(fmt,args...) printf (fmt ,##args)
	23	#else
	24	#define PRINTF(fmt,args...)
	25	#endif
	26
	27
	28	#define DEVNAME "kbd"
	29
	30	#define LED_SCR 0x01 /* scroll lock led */
	31	#define LED_CAP 0x04 /* caps lock led */
	32	#define LED_NUM 0x02 /* num lock led */
	33
	34	#define KBD_BUFFER_LEN 0x20 /* size of the keyboardbuffer */
	35
bd3143f0	36	#if defined(CONFIG_MPC5xxx) \|\| defined(CONFIG_MPC8540) \|\| defined(CONFIG_MPC8541) \|\| defined(CONFIG_MPC8555)
7e6bf358 WD	37	int ps2ser_check(void);
	38	#endif
	39
1c43771b WD	40	static volatile char kbd_buffer[KBD_BUFFER_LEN];
	41	static volatile int in_pointer = 0;
	42	static volatile int out_pointer = 0;
	43
	44	static unsigned char leds = 0;
	45	static unsigned char num_lock = 0;
	46	static unsigned char caps_lock = 0;
	47	static unsigned char scroll_lock = 0;
	48	static unsigned char shift = 0;
	49	static unsigned char ctrl = 0;
	50	static unsigned char alt = 0;
	51	static unsigned char e0 = 0;
	52
	53	/******************************************************************
	54	* Queue handling
	55	******************************************************************/
	56
	57	/* puts character in the queue and sets up the in and out pointer */
	58	static void kbd_put_queue(char data)
	59	{
	60	if((in_pointer+1)==KBD_BUFFER_LEN) {
	61	if(out_pointer==0) {
	62	return; /* buffer full */
	63	} else{
	64	in_pointer=0;
	65	}
	66	} else {
	67	if((in_pointer+1)==out_pointer)
	68	return; /* buffer full */
	69	in_pointer++;
	70	}
	71	kbd_buffer[in_pointer]=data;
	72	return;
	73	}
	74
	75	/* test if a character is in the queue */
	76	static int kbd_testc(void)
	77	{
bd3143f0	78	#if defined(CONFIG_MPC5xxx) \|\| defined(CONFIG_MPC8540) \|\| defined(CONFIG_MPC8541) \|\| defined(CONFIG_MPC8555)
7e6bf358 WD	79	/* no ISR is used, so received chars must be polled */
	80	ps2ser_check();
	81	#endif
1c43771b WD	82	if(in_pointer==out_pointer)
	83	return(0); /* no data */
	84	else
	85	return(1);
	86	}
	87
	88	/* gets the character from the queue */
	89	static int kbd_getc(void)
	90	{
	91	char c;
7e6bf358	92	while(in_pointer==out_pointer) {
bd3143f0	93	#if defined(CONFIG_MPC5xxx) \|\| defined(CONFIG_MPC8540) \|\| defined(CONFIG_MPC8541) \|\| defined(CONFIG_MPC8555)
7e6bf358 WD	94	/* no ISR is used, so received chars must be polled */
	95	ps2ser_check();
	96	#endif
	97	;}
1c43771b WD	98	if((out_pointer+1)==KBD_BUFFER_LEN)
	99	out_pointer=0;
	100	else
	101	out_pointer++;
	102	c=kbd_buffer[out_pointer];
	103	return (int)c;
	104
	105	}
	106
	107	/* Simple translation table for the keys */
	108
	109	static unsigned char kbd_plain_xlate[] = {
	110	0xff,0x1b, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=','\b','\t', /* 0x00 - 0x0f */
	111	'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']','\r',0xff, 'a', 's', /* 0x10 - 0x1f */
	112	'd', 'f', 'g', 'h', 'j', 'k', 'l', ';','\'', '`',0xff,'\\', 'z', 'x', 'c', 'v', /* 0x20 - 0x2f */
	113	'b', 'n', 'm', ',', '.', '/',0xff,0xff,0xff, ' ',0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */
	114	0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */
	115	'2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */
	116	'\r',0xff,0xff
	117	};
	118
	119	static unsigned char kbd_shift_xlate[] = {
	120	0xff,0x1b, '!', '@', '#', '$', '%', '^', '&', '', '(', ')', '_', '+','\b','\t', / 0x00 - 0x0f */
	121	'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}','\r',0xff, 'A', 'S', /* 0x10 - 0x1f */
	122	'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~',0xff, '\|', 'Z', 'X', 'C', 'V', /* 0x20 - 0x2f */
	123	'B', 'N', 'M', '<', '>', '?',0xff,0xff,0xff, ' ',0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */
	124	0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */
	125	'2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */
	126	'\r',0xff,0xff
	127	};
	128
	129	static unsigned char kbd_ctrl_xlate[] = {
	130	0xff,0x1b, '1',0x00, '3', '4', '5',0x1E, '7', '8', '9', '0',0x1F, '=','\b','\t', /* 0x00 - 0x0f */
	131	0x11,0x17,0x05,0x12,0x14,0x18,0x15,0x09,0x0f,0x10,0x1b,0x1d,'\n',0xff,0x01,0x13, /* 0x10 - 0x1f */
	132	0x04,0x06,0x08,0x09,0x0a,0x0b,0x0c, ';','\'', '~',0x00,0x1c,0x1a,0x18,0x03,0x16, /* 0x20 - 0x2f */
	133	0x02,0x0e,0x0d, '<', '>', '?',0xff,0xff,0xff,0x00,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */
	134	0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */
	135	'2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */
	136	'\r',0xff,0xff
	137	};
	138
	139
	140	void handle_scancode(unsigned char scancode)
	141	{
	142	unsigned char keycode;
	143
	144	/* Convert scancode to keycode */
	145	PRINTF("scancode %x\n",scancode);
	146	if(scancode==0xe0) {
	147	e0=1; /* special charakters */
	148	return;
	149	}
	150	if(e0==1) {
	151	e0=0; /* delete flag */
	152	if(!( ((scancode&0x7F)==0x38)\|\| /* the right ctrl key */
	153	((scancode&0x7F)==0x1D)\|\| /* the right alt key */
	154	((scancode&0x7F)==0x35)\|\| /* the right '/' key */
	155	((scancode&0x7F)==0x1C) )) /* the right enter key */
	156	/* we swallow unknown e0 codes */
	157	return;
	158	}
	159	/* special cntrl keys */
	160	switch(scancode) {
	161	case 0x2A:
162	case 0x36: /* shift pressed */
163	shift=1;
164	return; /* do nothing else */
165	case 0xAA:
166	case 0xB6: /* shift released */
167	shift=0;
168	return; /* do nothing else */
169	case 0x38: /* alt pressed */
170	alt=1;
171	return; /* do nothing else */
172	case 0xB8: /* alt released */
173	alt=0;
174	return; /* do nothing else */
175	case 0x1d: /* ctrl pressed */
176	ctrl=1;
177	return; /* do nothing else */
178	case 0x9d: /* ctrl released */
179	ctrl=0;
180	return; /* do nothing else */
181	case 0x46: /* scrollock pressed */
182	scroll_lock=~scroll_lock;
183	if(scroll_lock==0)
184	leds&=~LED_SCR; /* switch LED off */
185	else
186	leds\|=LED_SCR; /* switch on LED */
187	pckbd_leds(leds);
188	return; /* do nothing else */
189	case 0x3A: /* capslock pressed */
190	caps_lock=~caps_lock;
191	if(caps_lock==0)
192	leds&=~LED_CAP; /* switch caps_lock off */
193	else
194	leds\|=LED_CAP; /* switch on LED */
195	pckbd_leds(leds);
196	return;
197	case 0x45: /* numlock pressed */
198	num_lock=~num_lock;
199	if(num_lock==0)
200	leds&=~LED_NUM; /* switch LED off */
201	else
202	leds\|=LED_NUM; /* switch on LED */
203	pckbd_leds(leds);
204	return;
205	case 0xC6: /* scroll lock released */
206	case 0xC5: /* num lock released */
207	case 0xBA: /* caps lock released */
208	return; /* just swallow */
209	}
ef978730	210	#if 1
1c43771b WD	211	if((scancode&0x80)==0x80) /* key released */
1c43771b WD	212	return;
c837dcb1 WD	213	#else
	214	if((scancode&0x80)==0x00) /* key pressed */
	215	return;
	216	scancode &= ~0x80;
	217	#endif
1c43771b WD	218	/* now, decide which table we need */
	219	if(scancode > (sizeof(kbd_plain_xlate)/sizeof(kbd_plain_xlate[0]))) { /* scancode not in list */
	220	PRINTF("unkown scancode %X\n",scancode);
	221	return; /* swallow it */
	222	}
	223	/* setup plain code first */
	224	keycode=kbd_plain_xlate[scancode];
	225	if(caps_lock==1) { /* caps_lock is pressed, overwrite plain code */
	226	if(scancode > (sizeof(kbd_shift_xlate)/sizeof(kbd_shift_xlate[0]))) { /* scancode not in list */
	227	PRINTF("unkown caps-locked scancode %X\n",scancode);
	228	return; /* swallow it */
	229	}
	230	keycode=kbd_shift_xlate[scancode];
	231	if(keycode<'A') { /* we only want the alphas capital */
	232	keycode=kbd_plain_xlate[scancode];
	233	}
	234	}
	235	if(shift==1) { /* shift overwrites caps_lock */
	236	if(scancode > (sizeof(kbd_shift_xlate)/sizeof(kbd_shift_xlate[0]))) { /* scancode not in list */
	237	PRINTF("unkown shifted scancode %X\n",scancode);
	238	return; /* swallow it */
	239	}
	240	keycode=kbd_shift_xlate[scancode];
	241	}
	242	if(ctrl==1) { /* ctrl overwrites caps_lock and shift */
	243	if(scancode > (sizeof(kbd_ctrl_xlate)/sizeof(kbd_ctrl_xlate[0]))) { /* scancode not in list */
	244	PRINTF("unkown ctrl scancode %X\n",scancode);
	245	return; /* swallow it */
	246	}
	247	keycode=kbd_ctrl_xlate[scancode];
	248	}
	249	/* check if valid keycode */
	250	if(keycode==0xff) {
	251	PRINTF("unkown scancode %X\n",scancode);
	252	return; /* swallow unknown codes */
	253	}
	254
	255	kbd_put_queue(keycode);
	256	PRINTF("%x\n",keycode);
	257	}
	258
	259	/******************************************************************
	260	* Init
	261	******************************************************************/
	262
	263	#ifdef CFG_CONSOLE_OVERWRITE_ROUTINE
	264	extern int overwrite_console (void);
83e40ba7	265	#define OVERWRITE_CONSOLE overwrite_console ()
1c43771b	266	#else
83e40ba7 WD	267	#define OVERWRITE_CONSOLE 0
83e40ba7 WD	268	#endif /* CFG_CONSOLE_OVERWRITE_ROUTINE */
1c43771b WD	269
	270	int kbd_init (void)
	271	{
	272	int error;
	273	device_t kbddev ;
	274	char *stdinname = getenv ("stdin");
	275
	276	if(kbd_init_hw()==-1)
	277	return -1;
	278	memset (&kbddev, 0, sizeof(kbddev));
	279	strcpy(kbddev.name, DEVNAME);
	280	kbddev.flags = DEV_FLAGS_INPUT \| DEV_FLAGS_SYSTEM;
	281	kbddev.putc = NULL ;
	282	kbddev.puts = NULL ;
	283	kbddev.getc = kbd_getc ;
	284	kbddev.tstc = kbd_testc ;
	285
	286	error = device_register (&kbddev);
	287	if(error==0) {
	288	/* check if this is the standard input device */
	289	if(strcmp(stdinname,DEVNAME)==0) {
	290	/* reassign the console */
83e40ba7	291	if(OVERWRITE_CONSOLE) {
1c43771b WD	292	return 1;
	293	}
	294	error=console_assign(stdin,DEVNAME);
	295	if(error==0)
	296	return 1;
	297	else
	298	return error;
	299	}
	300	return 1;
	301	}
	302	return error;
	303	}
	304
	305	#endif /* CONFIG_PS2KBD */