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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 | /** @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 <arch/drivers/ega.h> |
37 | #include <arch/drivers/ega.h> |
38 | #include <putchar.h> |
38 | #include <putchar.h> |
39 | #include <mm/page.h> |
39 | #include <mm/page.h> |
40 | #include <mm/as.h> |
40 | #include <mm/as.h> |
41 | #include <arch/mm/page.h> |
41 | #include <arch/mm/page.h> |
42 | #include <synch/spinlock.h> |
42 | #include <synch/spinlock.h> |
43 | #include <arch/types.h> |
43 | #include <arch/types.h> |
44 | #include <arch/asm.h> |
44 | #include <arch/asm.h> |
45 | #include <memstr.h> |
45 | #include <memstr.h> |
46 | #include <console/chardev.h> |
46 | #include <console/chardev.h> |
47 | #include <console/console.h> |
47 | #include <console/console.h> |
48 | #include <sysinfo/sysinfo.h> |
48 | #include <sysinfo/sysinfo.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 __u32 ega_cursor; |
56 | static uint32_t ega_cursor; |
57 | static __u8 *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 | void ega_move_cursor(void); |
66 | void ega_move_cursor(void); |
67 | 67 | ||
68 | void ega_init(void) |
68 | void ega_init(void) |
69 | { |
69 | { |
70 | __u8 hi, lo; |
70 | uint8_t hi, lo; |
71 | 71 | ||
72 | videoram = (__u8 *) hw_map(VIDEORAM, SCREEN * 2); |
72 | videoram = (uint8_t *) hw_map(VIDEORAM, SCREEN * 2); |
73 | outb(0x3d4, 0xe); |
73 | outb(0x3d4, 0xe); |
74 | hi = inb(0x3d5); |
74 | hi = inb(0x3d5); |
75 | outb(0x3d4, 0xf); |
75 | outb(0x3d4, 0xf); |
76 | lo = inb(0x3d5); |
76 | lo = inb(0x3d5); |
77 | ega_cursor = (hi << 8) | lo; |
77 | ega_cursor = (hi << 8) | lo; |
78 | 78 | ||
79 | chardev_initialize("ega_out", &ega_console, &ega_ops); |
79 | chardev_initialize("ega_out", &ega_console, &ega_ops); |
80 | stdout = &ega_console; |
80 | stdout = &ega_console; |
81 | 81 | ||
82 | sysinfo_set_item_val("fb", NULL, true); |
82 | sysinfo_set_item_val("fb", NULL, true); |
83 | sysinfo_set_item_val("fb.kind", NULL, 2); |
83 | sysinfo_set_item_val("fb.kind", NULL, 2); |
84 | sysinfo_set_item_val("fb.width", NULL, ROW); |
84 | sysinfo_set_item_val("fb.width", NULL, ROW); |
85 | sysinfo_set_item_val("fb.height", NULL, ROWS); |
85 | sysinfo_set_item_val("fb.height", NULL, ROWS); |
86 | sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM); |
86 | sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM); |
87 | 87 | ||
88 | #ifndef CONFIG_FB |
88 | #ifndef CONFIG_FB |
89 | putchar('\n'); |
89 | putchar('\n'); |
90 | #endif |
90 | #endif |
91 | } |
91 | } |
92 | 92 | ||
93 | static void ega_display_char(char ch) |
93 | static void ega_display_char(char ch) |
94 | { |
94 | { |
95 | videoram[ega_cursor * 2] = ch; |
95 | videoram[ega_cursor * 2] = ch; |
96 | } |
96 | } |
97 | 97 | ||
98 | /* |
98 | /* |
99 | * This function takes care of scrolling. |
99 | * This function takes care of scrolling. |
100 | */ |
100 | */ |
101 | static void ega_check_cursor(void) |
101 | static void ega_check_cursor(void) |
102 | { |
102 | { |
103 | if (ega_cursor < SCREEN) |
103 | if (ega_cursor < SCREEN) |
104 | return; |
104 | return; |
105 | 105 | ||
106 | memcpy((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); |
106 | memcpy((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); |
107 | memsetw((__address) (videoram + (SCREEN - ROW) * 2), ROW, 0x0720); |
107 | memsetw((uintptr_t) (videoram + (SCREEN - ROW) * 2), ROW, 0x0720); |
108 | ega_cursor = ega_cursor - ROW; |
108 | ega_cursor = ega_cursor - ROW; |
109 | } |
109 | } |
110 | 110 | ||
111 | void ega_putchar(chardev_t *d, const char ch) |
111 | void ega_putchar(chardev_t *d, const char ch) |
112 | { |
112 | { |
113 | ipl_t ipl; |
113 | ipl_t ipl; |
114 | 114 | ||
115 | ipl = interrupts_disable(); |
115 | ipl = interrupts_disable(); |
116 | spinlock_lock(&egalock); |
116 | spinlock_lock(&egalock); |
117 | 117 | ||
118 | switch (ch) { |
118 | switch (ch) { |
119 | case '\n': |
119 | case '\n': |
120 | ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; |
120 | ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; |
121 | break; |
121 | break; |
122 | case '\t': |
122 | case '\t': |
123 | ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
123 | ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
124 | break; |
124 | break; |
125 | case '\b': |
125 | case '\b': |
126 | if (ega_cursor % ROW) |
126 | if (ega_cursor % ROW) |
127 | ega_cursor--; |
127 | ega_cursor--; |
128 | break; |
128 | break; |
129 | default: |
129 | default: |
130 | ega_display_char(ch); |
130 | ega_display_char(ch); |
131 | ega_cursor++; |
131 | ega_cursor++; |
132 | break; |
132 | break; |
133 | } |
133 | } |
134 | ega_check_cursor(); |
134 | ega_check_cursor(); |
135 | ega_move_cursor(); |
135 | ega_move_cursor(); |
136 | 136 | ||
137 | spinlock_unlock(&egalock); |
137 | spinlock_unlock(&egalock); |
138 | interrupts_restore(ipl); |
138 | interrupts_restore(ipl); |
139 | } |
139 | } |
140 | 140 | ||
141 | void ega_move_cursor(void) |
141 | void ega_move_cursor(void) |
142 | { |
142 | { |
143 | outb(0x3d4, 0xe); |
143 | outb(0x3d4, 0xe); |
144 | outb(0x3d5, (ega_cursor >> 8) & 0xff); |
144 | outb(0x3d5, (ega_cursor >> 8) & 0xff); |
145 | outb(0x3d4, 0xf); |
145 | outb(0x3d4, 0xf); |
146 | outb(0x3d5, ega_cursor & 0xff); |
146 | outb(0x3d5, ega_cursor & 0xff); |
147 | } |
147 | } |
148 | 148 | ||
149 | /** @} |
149 | /** @} |
150 | */ |
150 | */ |
151 | 151 |