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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 | #include <arch/ega.h> |
29 | #include <arch/drivers/ega.h> |
30 | #include <putchar.h> |
30 | #include <putchar.h> |
31 | #include <mm/page.h> |
31 | #include <mm/page.h> |
32 | #include <mm/as.h> |
32 | #include <mm/as.h> |
33 | #include <arch/mm/page.h> |
33 | #include <arch/mm/page.h> |
34 | #include <synch/spinlock.h> |
34 | #include <synch/spinlock.h> |
35 | #include <arch/types.h> |
35 | #include <arch/types.h> |
36 | #include <arch/asm.h> |
36 | #include <arch/asm.h> |
37 | #include <memstr.h> |
37 | #include <memstr.h> |
38 | #include <console/chardev.h> |
38 | #include <console/chardev.h> |
39 | #include <console/console.h> |
39 | #include <console/console.h> |
- | 40 | #include <sysinfo/sysinfo.h> |
|
40 | 41 | ||
41 | /* |
42 | /* |
42 | * The EGA driver. |
43 | * The EGA driver. |
43 | * Simple and short. Function for displaying characters and "scrolling". |
44 | * Simple and short. Function for displaying characters and "scrolling". |
44 | */ |
45 | */ |
45 | 46 | ||
46 | SPINLOCK_INITIALIZE(egalock); |
47 | SPINLOCK_INITIALIZE(egalock); |
47 | static __u32 ega_cursor; |
48 | static __u32 ega_cursor; |
- | 49 | static __u8 *videoram; |
|
48 | 50 | ||
49 | static void ega_putchar(chardev_t *d, const char ch); |
51 | static void ega_putchar(chardev_t *d, const char ch); |
50 | 52 | ||
51 | chardev_t ega_console; |
53 | chardev_t ega_console; |
52 | static chardev_operations_t ega_ops = { |
54 | static chardev_operations_t ega_ops = { |
53 | .write = ega_putchar |
55 | .write = ega_putchar |
54 | }; |
56 | }; |
55 | 57 | ||
56 | void ega_move_cursor(void); |
58 | void ega_move_cursor(void); |
57 | 59 | ||
58 | void ega_init(void) |
60 | void ega_init(void) |
59 | { |
61 | { |
60 | __u8 hi, lo; |
62 | __u8 hi, lo; |
61 | 63 | ||
62 | page_mapping_insert(AS_KERNEL, PA2KA(VIDEORAM), VIDEORAM, PAGE_NOT_CACHEABLE); |
64 | videoram = (__u8 *) hw_map(VIDEORAM, SCREEN * 2); |
63 | outb(0x3d4,0xe); |
65 | outb(0x3d4, 0xe); |
64 | hi = inb(0x3d5); |
66 | hi = inb(0x3d5); |
65 | outb(0x3d4,0xf); |
67 | outb(0x3d4, 0xf); |
66 | lo = inb(0x3d5); |
68 | lo = inb(0x3d5); |
67 | ega_cursor = (hi<<8)|lo; |
69 | ega_cursor = (hi << 8) | lo; |
68 | 70 | ||
69 | chardev_initialize("ega_out", &ega_console, &ega_ops); |
71 | chardev_initialize("ega_out", &ega_console, &ega_ops); |
70 | stdout = &ega_console; |
72 | stdout = &ega_console; |
71 | 73 | ||
- | 74 | sysinfo_set_item_val("fb", NULL, true); |
|
- | 75 | sysinfo_set_item_val("fb.kind", NULL, 2); |
|
- | 76 | sysinfo_set_item_val("fb.width", NULL, ROW); |
|
- | 77 | sysinfo_set_item_val("fb.height", NULL, ROWS); |
|
- | 78 | sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM); |
|
- | 79 | ||
72 | #ifndef CONFIG_FB |
80 | #ifndef CONFIG_FB |
73 | putchar('\n'); |
81 | putchar('\n'); |
74 | #endif |
82 | #endif |
75 | } |
83 | } |
76 | 84 | ||
77 | static void ega_display_char(char ch) |
85 | static void ega_display_char(char ch) |
78 | { |
86 | { |
79 | __u8 *vram = (__u8 *) PA2KA(VIDEORAM); |
- | |
80 | - | ||
81 | vram[ega_cursor*2] = ch; |
87 | videoram[ega_cursor * 2] = ch; |
82 | } |
88 | } |
83 | 89 | ||
84 | /* |
90 | /* |
85 | * This function takes care of scrolling. |
91 | * This function takes care of scrolling. |
86 | */ |
92 | */ |
87 | static void ega_check_cursor(void) |
93 | static void ega_check_cursor(void) |
88 | { |
94 | { |
89 | if (ega_cursor < SCREEN) |
95 | if (ega_cursor < SCREEN) |
90 | return; |
96 | return; |
91 | 97 | ||
92 | memcpy((void *)PA2KA(VIDEORAM), (void *)(PA2KA(VIDEORAM) + ROW*2), (SCREEN - ROW)*2); |
98 | memcpy((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); |
93 | memsetw(PA2KA(VIDEORAM) + (SCREEN - ROW)*2, ROW, 0x0720); |
99 | memsetw((__address) (videoram + (SCREEN - ROW) * 2), ROW, 0x0720); |
94 | ega_cursor = ega_cursor - ROW; |
100 | ega_cursor = ega_cursor - ROW; |
95 | } |
101 | } |
96 | 102 | ||
97 | void ega_putchar(chardev_t *d, const char ch) |
103 | void ega_putchar(chardev_t *d, const char ch) |
98 | { |
104 | { |
99 | ipl_t ipl; |
105 | ipl_t ipl; |
100 | 106 | ||
101 | ipl = interrupts_disable(); |
107 | ipl = interrupts_disable(); |
102 | spinlock_lock(&egalock); |
108 | spinlock_lock(&egalock); |
103 | 109 | ||
104 | switch (ch) { |
110 | switch (ch) { |
105 | case '\n': |
111 | case '\n': |
106 | ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; |
112 | ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; |
107 | break; |
113 | break; |
108 | case '\t': |
114 | case '\t': |
109 | ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
115 | ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
110 | break; |
116 | break; |
111 | case '\b': |
117 | case '\b': |
112 | if (ega_cursor % ROW) |
118 | if (ega_cursor % ROW) |
113 | ega_cursor--; |
119 | ega_cursor--; |
114 | break; |
120 | break; |
115 | default: |
121 | default: |
116 | ega_display_char(ch); |
122 | ega_display_char(ch); |
117 | ega_cursor++; |
123 | ega_cursor++; |
118 | break; |
124 | break; |
119 | } |
125 | } |
120 | ega_check_cursor(); |
126 | ega_check_cursor(); |
121 | ega_move_cursor(); |
127 | ega_move_cursor(); |
122 | 128 | ||
123 | spinlock_unlock(&egalock); |
129 | spinlock_unlock(&egalock); |
124 | interrupts_restore(ipl); |
130 | interrupts_restore(ipl); |
125 | } |
131 | } |
126 | 132 | ||
127 | void ega_move_cursor(void) |
133 | void ega_move_cursor(void) |
128 | { |
134 | { |
129 | outb(0x3d4,0xe); |
135 | outb(0x3d4, 0xe); |
130 | outb(0x3d5,(ega_cursor>>8)&0xff); |
136 | outb(0x3d5, (ega_cursor >> 8) & 0xff); |
131 | outb(0x3d4,0xf); |
137 | outb(0x3d4, 0xf); |
132 | outb(0x3d5,ega_cursor&0xff); |
138 | outb(0x3d5, ega_cursor & 0xff); |
133 | } |
139 | } |
134 | 140 |