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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 | #include <ddi/ddi.h> |
49 | #include <ddi/ddi.h> |
50 | 50 | ||
51 | /* |
51 | /* |
52 | * The EGA driver. |
52 | * The EGA driver. |
53 | * Simple and short. Function for displaying characters and "scrolling". |
53 | * Simple and short. Function for displaying characters and "scrolling". |
54 | */ |
54 | */ |
55 | 55 | ||
56 | static parea_t ega_parea; /**< Physical memory area for EGA video RAM. */ |
56 | static parea_t ega_parea; /**< Physical memory area for EGA video RAM. */ |
57 | 57 | ||
58 | SPINLOCK_INITIALIZE(egalock); |
58 | SPINLOCK_INITIALIZE(egalock); |
59 | static uint32_t ega_cursor; |
59 | static uint32_t ega_cursor; |
60 | static uint8_t *videoram; |
60 | static uint8_t *videoram; |
61 | 61 | ||
62 | static void ega_putchar(chardev_t *d, const char ch); |
62 | static void ega_putchar(chardev_t *d, const char ch); |
63 | 63 | ||
64 | chardev_t ega_console; |
64 | chardev_t ega_console; |
65 | static chardev_operations_t ega_ops = { |
65 | static chardev_operations_t ega_ops = { |
66 | .write = ega_putchar |
66 | .write = ega_putchar |
67 | }; |
67 | }; |
68 | 68 | ||
69 | static void ega_move_cursor(void); |
69 | static void ega_move_cursor(void); |
70 | 70 | ||
71 | void ega_init(void) |
71 | void ega_init(void) |
72 | { |
72 | { |
73 | uint8_t hi, lo; |
73 | uint8_t hi, lo; |
74 | 74 | ||
75 | videoram = (uint8_t *) hw_map(VIDEORAM, SCREEN * 2); |
75 | videoram = (uint8_t *) hw_map(VIDEORAM, SCREEN * 2); |
76 | outb(0x3d4, 0xe); |
76 | outb(0x3d4, 0xe); |
77 | hi = inb(0x3d5); |
77 | hi = inb(0x3d5); |
78 | outb(0x3d4, 0xf); |
78 | outb(0x3d4, 0xf); |
79 | lo = inb(0x3d5); |
79 | lo = inb(0x3d5); |
80 | ega_cursor = (hi << 8) | lo; |
80 | ega_cursor = (hi << 8) | lo; |
81 | 81 | ||
82 | chardev_initialize("ega_out", &ega_console, &ega_ops); |
82 | chardev_initialize("ega_out", &ega_console, &ega_ops); |
83 | stdout = &ega_console; |
83 | stdout = &ega_console; |
84 | 84 | ||
85 | ega_parea.pbase = VIDEORAM; |
85 | ega_parea.pbase = VIDEORAM; |
86 | ega_parea.vbase = (uintptr_t) videoram; |
86 | ega_parea.vbase = (uintptr_t) videoram; |
87 | ega_parea.frames = 1; |
87 | ega_parea.frames = 1; |
88 | ega_parea.cacheable = false; |
88 | ega_parea.cacheable = false; |
89 | ddi_parea_register(&ega_parea); |
89 | ddi_parea_register(&ega_parea); |
90 | 90 | ||
91 | sysinfo_set_item_val("fb", NULL, true); |
91 | sysinfo_set_item_val("fb", NULL, true); |
92 | sysinfo_set_item_val("fb.kind", NULL, 2); |
92 | sysinfo_set_item_val("fb.kind", NULL, 2); |
93 | sysinfo_set_item_val("fb.width", NULL, ROW); |
93 | sysinfo_set_item_val("fb.width", NULL, ROW); |
94 | sysinfo_set_item_val("fb.height", NULL, ROWS); |
94 | sysinfo_set_item_val("fb.height", NULL, ROWS); |
95 | sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM); |
95 | sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM); |
96 | sysinfo_set_item_val("fb.address.color", NULL, PAGE_COLOR((uintptr_t) |
96 | sysinfo_set_item_val("fb.address.color", NULL, PAGE_COLOR((uintptr_t) |
97 | videoram)); |
97 | videoram)); |
98 | 98 | ||
99 | #ifndef CONFIG_FB |
99 | #ifndef CONFIG_FB |
100 | putchar('\n'); |
100 | putchar('\n'); |
101 | #endif |
101 | #endif |
102 | } |
102 | } |
103 | 103 | ||
104 | static void ega_display_char(char ch) |
104 | static void ega_display_char(char ch) |
105 | { |
105 | { |
106 | videoram[ega_cursor * 2] = ch; |
106 | videoram[ega_cursor * 2] = ch; |
107 | } |
107 | } |
108 | 108 | ||
109 | /* |
109 | /* |
110 | * This function takes care of scrolling. |
110 | * This function takes care of scrolling. |
111 | */ |
111 | */ |
112 | static void ega_check_cursor(void) |
112 | static void ega_check_cursor(void) |
113 | { |
113 | { |
114 | if (ega_cursor < SCREEN) |
114 | if (ega_cursor < SCREEN) |
115 | return; |
115 | return; |
116 | 116 | ||
117 | memcpy((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); |
117 | memcpy((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); |
118 | memsetw((uintptr_t) (videoram + (SCREEN - ROW) * 2), ROW, 0x0720); |
118 | memsetw((uintptr_t) (videoram + (SCREEN - ROW) * 2), ROW, 0x0720); |
119 | ega_cursor = ega_cursor - ROW; |
119 | ega_cursor = ega_cursor - ROW; |
120 | } |
120 | } |
121 | 121 | ||
122 | void ega_putchar(chardev_t *d __attribute__((unused)), const char ch) |
122 | void ega_putchar(chardev_t *d __attribute__((unused)), const char ch) |
123 | { |
123 | { |
124 | ipl_t ipl; |
124 | ipl_t ipl; |
125 | 125 | ||
126 | ipl = interrupts_disable(); |
126 | ipl = interrupts_disable(); |
127 | spinlock_lock(&egalock); |
127 | spinlock_lock(&egalock); |
128 | 128 | ||
129 | switch (ch) { |
129 | switch (ch) { |
130 | case '\n': |
130 | case '\n': |
131 | ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; |
131 | ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; |
132 | break; |
132 | break; |
133 | case '\t': |
133 | case '\t': |
134 | ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
134 | ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
135 | break; |
135 | break; |
136 | case '\b': |
136 | case '\b': |
137 | if (ega_cursor % ROW) |
137 | if (ega_cursor % ROW) |
138 | ega_cursor--; |
138 | ega_cursor--; |
139 | break; |
139 | break; |
140 | default: |
140 | default: |
141 | ega_display_char(ch); |
141 | ega_display_char(ch); |
142 | ega_cursor++; |
142 | ega_cursor++; |
143 | break; |
143 | break; |
144 | } |
144 | } |
145 | ega_check_cursor(); |
145 | ega_check_cursor(); |
146 | ega_move_cursor(); |
146 | ega_move_cursor(); |
147 | 147 | ||
148 | spinlock_unlock(&egalock); |
148 | spinlock_unlock(&egalock); |
149 | interrupts_restore(ipl); |
149 | interrupts_restore(ipl); |
150 | } |
150 | } |
151 | 151 | ||
152 | void ega_move_cursor(void) |
152 | void ega_move_cursor(void) |
153 | { |
153 | { |
154 | outb(0x3d4, 0xe); |
154 | outb(0x3d4, 0xe); |
155 | outb(0x3d5, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
155 | outb(0x3d5, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
156 | outb(0x3d4, 0xf); |
156 | outb(0x3d4, 0xf); |
157 | outb(0x3d5, (uint8_t) (ega_cursor & 0xff)); |
157 | outb(0x3d5, (uint8_t) (ega_cursor & 0xff)); |
158 | } |
158 | } |
159 | 159 | ||
160 | /** @} |
160 | /** @} |
161 | */ |
161 | */ |
162 | 162 |