WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia64/src/simics/ega.c


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup ia32   
 * @{
 */
/**
 * @file
 * @brief EGA driver.
 */
 
#include <putchar.h>
#include <mm/page.h>
#include <mm/as.h>
#include <arch/mm/page.h>
#include <synch/spinlock.h>
#include <arch/types.h>
#include <arch/asm.h>
#include <memstr.h>
#include <console/chardev.h>
#include <console/console.h>
#include <sysinfo/sysinfo.h>
#include <arch/simics/ega.h>
 
/*
 * The EGA driver.
 * Simple and short. Function for displaying characters and "scrolling".
 */
 
SPINLOCK_INITIALIZE(egalock);
static uint32_t ega_cursor;
static uint8_t *videoram;
 
static void ega_putchar(chardev_t *d, const char ch);
 
chardev_t ega_console;
static chardev_operations_t ega_ops = {
    .write = ega_putchar
};
 
 
void ega_init(void)
{
   
    videoram = (uint8_t *) (VIDEORAM);
 
    chardev_initialize("ega_out", &ega_console, &ega_ops);
    stdout = &ega_console;
   
    sysinfo_set_item_val("fb", NULL, true);
    sysinfo_set_item_val("fb.kind", NULL, 2);
    sysinfo_set_item_val("fb.width", NULL, ROW);
    sysinfo_set_item_val("fb.height", NULL, ROWS);
    sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM);
   
#ifndef CONFIG_FB
    putchar('\n');
#endif  
}
 
static void ega_display_char(char ch)
{
    videoram[ega_cursor * 2] = ch;
    videoram[ega_cursor * 2+1] = 7;
}
 
/*
 * This function takes care of scrolling.
 */
static void ega_check_cursor(void)
{
    int i;
    if (ega_cursor < SCREEN)
        return;
 
    memcpy((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2);
    for(i=0;i<ROW*2;i+=2)
    {
        videoram[(SCREEN-ROW)*2+i+0]=0x20;
        videoram[(SCREEN-ROW)*2+i+1]=0x07;
    }
    ega_cursor = ega_cursor - ROW;
}
 
void ega_putchar(chardev_t *d, const char ch)
{
    ipl_t ipl;
 
    ipl = interrupts_disable();
    spinlock_lock(&egalock);
 
    switch (ch) {
    case '\n':
        ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW;
        break;
    case '\t':
        ega_cursor = (ega_cursor + 8) - ega_cursor % 8;
        break;
    case '\b':
        if (ega_cursor % ROW)
            ega_cursor--;
        break;
    default:
        ega_display_char(ch);
        ega_cursor++;
        break;
    }
    ega_check_cursor();
 
    spinlock_unlock(&egalock);
    interrupts_restore(ipl);
}
 
 
/** @}
 */
 

Rev 2065	Rev 2071
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup ia32	29	/** @addtogroup ia32
30	* @{	30	* @{
31	*/	31	*/
32	/**	32	/**
33	* @file	33	* @file
34	* @brief EGA driver.	34	* @brief EGA driver.
35	*/	35	*/
36		36
37	#include <putchar.h>	37	#include <putchar.h>
38	#include <mm/page.h>	38	#include <mm/page.h>
39	#include <mm/as.h>	39	#include <mm/as.h>
40	#include <arch/mm/page.h>	40	#include <arch/mm/page.h>
41	#include <synch/spinlock.h>	41	#include <synch/spinlock.h>
42	#include <arch/types.h>	42	#include <arch/types.h>
43	#include <arch/asm.h>	43	#include <arch/asm.h>
44	#include <memstr.h>	44	#include <memstr.h>
45	#include <console/chardev.h>	45	#include <console/chardev.h>
46	#include <console/console.h>	46	#include <console/console.h>
47	#include <sysinfo/sysinfo.h>	47	#include <sysinfo/sysinfo.h>
48	#include <arch/simics/ega.h>	48	#include <arch/simics/ega.h>
49		49
50	/*	50	/*
51	* The EGA driver.	51	* The EGA driver.
52	* Simple and short. Function for displaying characters and "scrolling".	52	* Simple and short. Function for displaying characters and "scrolling".
53	*/	53	*/
54		54
55	SPINLOCK_INITIALIZE(egalock);	55	SPINLOCK_INITIALIZE(egalock);
56	static uint32_t ega_cursor;	56	static uint32_t ega_cursor;
57	static uint8_t *videoram;	57	static uint8_t *videoram;
58		58
59	static void ega_putchar(chardev_t *d, const char ch);	59	static void ega_putchar(chardev_t *d, const char ch);
60		60
61	chardev_t ega_console;	61	chardev_t ega_console;
62	static chardev_operations_t ega_ops = {	62	static chardev_operations_t ega_ops = {
63	.write = ega_putchar	63	.write = ega_putchar
64	};	64	};
65		65
66		66
67	void ega_init(void)	67	void ega_init(void)
68	{	68	{
69		69
70	videoram = (uint8_t *) (VIDEORAM);	70	videoram = (uint8_t *) (VIDEORAM);
71		71
72	chardev_initialize("ega_out", &ega_console, &ega_ops);	72	chardev_initialize("ega_out", &ega_console, &ega_ops);
73	stdout = &ega_console;	73	stdout = &ega_console;
74		74
75	sysinfo_set_item_val("fb", NULL, true);	75	sysinfo_set_item_val("fb", NULL, true);
76	sysinfo_set_item_val("fb.kind", NULL, 2);	76	sysinfo_set_item_val("fb.kind", NULL, 2);
77	sysinfo_set_item_val("fb.width", NULL, ROW);	77	sysinfo_set_item_val("fb.width", NULL, ROW);
78	sysinfo_set_item_val("fb.height", NULL, ROWS);	78	sysinfo_set_item_val("fb.height", NULL, ROWS);
79	sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM);	79	sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM);
80		80
81	#ifndef CONFIG_FB	81	#ifndef CONFIG_FB
82	putchar('\n');	82	putchar('\n');
83	#endif	83	#endif
84	}	84	}
85		85
86	static void ega_display_char(char ch)	86	static void ega_display_char(char ch)
87	{	87	{
88	videoram[ega_cursor * 2] = ch;	88	videoram[ega_cursor * 2] = ch;
89	videoram[ega_cursor * 2+1] = 7;	89	videoram[ega_cursor * 2+1] = 7;
90	}	90	}
91		91
92	/*	92	/*
93	* This function takes care of scrolling.	93	* This function takes care of scrolling.
94	*/	94	*/
95	static void ega_check_cursor(void)	95	static void ega_check_cursor(void)
96	{	96	{
97	int i;	97	int i;
98	if (ega_cursor < SCREEN)	98	if (ega_cursor < SCREEN)
99	return;	99	return;
100		100
101	memcpy((void ) videoram, (void ) (videoram + ROW * 2), (SCREEN - ROW) * 2);	101	memcpy((void ) videoram, (void ) (videoram + ROW * 2), (SCREEN - ROW) * 2);
102	for(i=0;i<ROW*2;i+=2)	102	for(i=0;i<ROW*2;i+=2)
103	{	103	{
104	videoram[(SCREEN-ROW)*2+i+0]=0x20;	104	videoram[(SCREEN-ROW)*2+i+0]=0x20;
105	videoram[(SCREEN-ROW)*2+i+1]=0x07;	105	videoram[(SCREEN-ROW)*2+i+1]=0x07;
106	}	106	}
107	ega_cursor = ega_cursor - ROW;	107	ega_cursor = ega_cursor - ROW;
108	}	108	}
109		109
110	void ega_putchar(chardev_t *d, const char ch)	110	void ega_putchar(chardev_t *d, const char ch)
111	{	111	{
112	ipl_t ipl;	112	ipl_t ipl;
113		113
114	ipl = interrupts_disable();	114	ipl = interrupts_disable();
115	spinlock_lock(&egalock);	115	spinlock_lock(&egalock);
116		116
117	switch (ch) {	117	switch (ch) {
118	case '\n':	118	case '\n':
119	ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW;	119	ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW;
120	break;	120	break;
121	case '\t':	121	case '\t':
122	ega_cursor = (ega_cursor + 8) - ega_cursor % 8;	122	ega_cursor = (ega_cursor + 8) - ega_cursor % 8;
123	break;	123	break;
124	case '\b':	124	case '\b':
125	if (ega_cursor % ROW)	125	if (ega_cursor % ROW)
126	ega_cursor--;	126	ega_cursor--;
127	break;	127	break;
128	default:	128	default:
129	ega_display_char(ch);	129	ega_display_char(ch);
130	ega_cursor++;	130	ega_cursor++;
131	break;	131	break;
132	}	132	}
133	ega_check_cursor();	133	ega_check_cursor();
134		134
135	spinlock_unlock(&egalock);	135	spinlock_unlock(&egalock);
136	interrupts_restore(ipl);	136	interrupts_restore(ipl);
137	}	137	}
138		138
139		139
140	/** @}	140	/** @}
141	*/	141	*/
142		142

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(root)/trunk/kernel/arch/ia64/src/simics/ega.c – Rev 2065 → 2071