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Rev 3790 Rev 3844
Line 60... Line 60...
60 
static uint32_t ega_cursor;
 60 
static uint32_t ega_cursor;
61 
static uint8_t *videoram;
 61 
static uint8_t *videoram;
62 
static uint8_t *backbuf;
 62 
static uint8_t *backbuf;
63 
static ioport_t ega_base;
 63 
static ioport_t ega_base;
64 
 
 64 
 
65 
static void ega_putchar(chardev_t *d, const char ch);
 - 
 
66 
 
 - 
 
67 
chardev_t ega_console;
 65 
chardev_t ega_console;
68 
static chardev_operations_t ega_ops = {
 - 
 
69 
    .write = ega_putchar
 - 
 
70 
};
 - 
 
71 
 
 - 
 
72 
static void ega_move_cursor(void);
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73 
 
 - 
 
74 
void ega_init(ioport_t base, uintptr_t videoram_phys)
 - 
 
75 
{
 - 
 
76 
    /* Initialize the software structure. */   
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77 
    ega_base = base;
 - 
 
78 
 
 - 
 
79 
    backbuf = (uint8_t *) malloc(SCREEN * 2, 0);
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80 
    if (!backbuf)
 - 
 
81 
        panic("Unable to allocate backbuffer.");
 - 
 
82 
   
 - 
 
83 
    videoram = (uint8_t *) hw_map(videoram_phys, SCREEN * 2);
 - 
 
84 
   
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85 
    /* Clear the screen and set the cursor position. */
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86 
    memsetw(videoram, SCREEN, 0x0720);
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87 
    memsetw(backbuf, SCREEN, 0x0720);
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88 
    ega_move_cursor();
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89 
 
 - 
 
90 
    chardev_initialize("ega_out", &ega_console, &ega_ops);
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91 
    stdout = &ega_console;
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92 
   
 - 
 
93 
    ega_parea.pbase = videoram_phys;
 - 
 
94 
    ega_parea.vbase = (uintptr_t) videoram;
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95 
    ega_parea.frames = 1;
 - 
 
96 
    ega_parea.cacheable = false;
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97 
    ddi_parea_register(&ega_parea);
 - 
 
98 
 
 - 
 
99 
    sysinfo_set_item_val("fb", NULL, true);
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100 
    sysinfo_set_item_val("fb.kind", NULL, 2);
 - 
 
101 
    sysinfo_set_item_val("fb.width", NULL, ROW);
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102 
    sysinfo_set_item_val("fb.height", NULL, ROWS);
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103 
    sysinfo_set_item_val("fb.blinking", NULL, true);
 - 
 
104 
    sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys);
 - 
 
105 
}
 - 
 
106 
 
 - 
 
107 
static void ega_display_char(char ch)
 - 
 
108 
{
 - 
 
109 
    videoram[ega_cursor * 2] = ch;
 - 
 
110 
    backbuf[ega_cursor * 2] = ch;
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111 
}
 - 
 
112 
 
 66 
 
113 
/*
 67 
/*
114 
 * This function takes care of scrolling.
 68 
 * This function takes care of scrolling.
115 
 */
 69 
 */
116 
static void ega_check_cursor(void)
 70 
static void ega_check_cursor(void)
Line 125... Line 79...
125 
    memsetw(videoram + (SCREEN - ROW) * 2, ROW, 0x0720);
 79 
    memsetw(videoram + (SCREEN - ROW) * 2, ROW, 0x0720);
126 
    memsetw(backbuf + (SCREEN - ROW) * 2, ROW, 0x0720);
 80 
    memsetw(backbuf + (SCREEN - ROW) * 2, ROW, 0x0720);
127 
    ega_cursor = ega_cursor - ROW;
 81 
    ega_cursor = ega_cursor - ROW;
128 
}
 82 
}
129 
 
 83 
 
130 
void ega_putchar(chardev_t *d __attribute__((unused)), const char ch)
 84 
static void ega_move_cursor(void)
131 
{
 85 
{
- 
 
 86 
    outb(ega_base + EGA_INDEX_REG, 0xe);
- 
 
 87 
    outb(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff));
- 
 
 88 
    outb(ega_base + EGA_INDEX_REG, 0xf);
- 
 
 89 
    outb(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff));  
- 
 
 90 
}
- 
 
 91 
 
- 
 
 92 
static void ega_display_char(char ch, bool silent)
- 
 
 93 
{
- 
 
 94 
    backbuf[ega_cursor * 2] = ch;
- 
 
 95 
   
132 
    ipl_t ipl;
 96 
    if (!silent)
- 
 
 97 
        videoram[ega_cursor * 2] = ch;
- 
 
 98 
}
133 
 
 99 
 
- 
 
 100 
static void ega_putchar(chardev_t *d __attribute__((unused)), const char ch, bool silent)
- 
 
 101 
{
- 
 
 102 
    ipl_t ipl;
- 
 
 103 
   
134 
    ipl = interrupts_disable();
 104 
    ipl = interrupts_disable();
135 
    spinlock_lock(&egalock);
 105 
    spinlock_lock(&egalock);
136 
 
 106 
   
137 
    switch (ch) {
 107 
    switch (ch) {
138 
    case '\n':
 108 
    case '\n':
139 
        ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW;
 109 
        ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW;
140 
        break;
 110 
        break;
141 
    case '\t':
 111 
    case '\t':
Line 144... Line 114...
144 
    case '\b':
 114 
    case '\b':
145 
        if (ega_cursor % ROW)
 115 
        if (ega_cursor % ROW)
146 
            ega_cursor--;
 116 
            ega_cursor--;
147 
        break;
 117 
        break;
148 
    default:
 118 
    default:
149 
        ega_display_char(ch);
 119 
        ega_display_char(ch, silent);
150 
        ega_cursor++;
 120 
        ega_cursor++;
151 
        break;
 121 
        break;
152 
    }
 122 
    }
153 
    ega_check_cursor();
 123 
    ega_check_cursor();
- 
 
 124 
   
- 
 
 125 
    if (!silent)
154 
    ega_move_cursor();
 126 
        ega_move_cursor();
155 
 
 127 
   
156 
    spinlock_unlock(&egalock);
 128 
    spinlock_unlock(&egalock);
157 
    interrupts_restore(ipl);
 129 
    interrupts_restore(ipl);
158 
}
 130 
}
159 
 
 131 
 
- 
 
 132 
static chardev_operations_t ega_ops = {
- 
 
 133 
    .write = ega_putchar
- 
 
 134 
};
- 
 
 135 
 
160 
void ega_move_cursor(void)
 136 
void ega_init(ioport_t base, uintptr_t videoram_phys)
161 
{
 137 
{
- 
 
 138 
    /* Initialize the software structure. */   
- 
 
 139 
    ega_base = base;
- 
 
 140 
   
- 
 
 141 
    backbuf = (uint8_t *) malloc(SCREEN * 2, 0);
- 
 
 142 
    if (!backbuf)
- 
 
 143 
        panic("Unable to allocate backbuffer.");
- 
 
 144 
   
- 
 
 145 
    videoram = (uint8_t *) hw_map(videoram_phys, SCREEN * 2);
- 
 
 146 
   
- 
 
 147 
    /* Clear the screen and set the cursor position. */
- 
 
 148 
    memsetw(videoram, SCREEN, 0x0720);
162 
    outb(ega_base + EGA_INDEX_REG, 0xe);
 149 
    memsetw(backbuf, SCREEN, 0x0720);
- 
 
 150 
    ega_move_cursor();
- 
 
 151 
   
163 
    outb(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff));
 152 
    chardev_initialize("ega_out", &ega_console, &ega_ops);
- 
 
 153 
    stdout = &ega_console;
- 
 
 154 
   
164 
    outb(ega_base + EGA_INDEX_REG, 0xf);
 155 
    ega_parea.pbase = videoram_phys;
165 
    outb(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff));  
 156 
    ega_parea.vbase = (uintptr_t) videoram;
- 
 
 157 
    ega_parea.frames = 1;
- 
 
 158 
    ega_parea.cacheable = false;
- 
 
 159 
    ddi_parea_register(&ega_parea);
- 
 
 160 
   
- 
 
 161 
    sysinfo_set_item_val("fb", NULL, true);
- 
 
 162 
    sysinfo_set_item_val("fb.kind", NULL, 2);
- 
 
 163 
    sysinfo_set_item_val("fb.width", NULL, ROW);
- 
 
 164 
    sysinfo_set_item_val("fb.height", NULL, ROWS);
- 
 
 165 
    sysinfo_set_item_val("fb.blinking", NULL, true);
- 
 
 166 
    sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys);
166 
}
 167 
}
167 
 
 168 
 
168 
void ega_redraw(void)
 169 
void ega_redraw(void)
169 
{
 170 
{
170 
    memcpy(videoram, backbuf, SCREEN * 2);
 171 
    memcpy(videoram, backbuf, SCREEN * 2);