62,54 → 62,8 |
static uint8_t *backbuf; |
static ioport_t ega_base; |
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static void ega_putchar(chardev_t *d, const char ch); |
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chardev_t ega_console; |
static chardev_operations_t ega_ops = { |
.write = ega_putchar |
}; |
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static void ega_move_cursor(void); |
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void ega_init(ioport_t base, uintptr_t videoram_phys) |
{ |
/* Initialize the software structure. */ |
ega_base = base; |
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backbuf = (uint8_t *) malloc(SCREEN * 2, 0); |
if (!backbuf) |
panic("Unable to allocate backbuffer."); |
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videoram = (uint8_t *) hw_map(videoram_phys, SCREEN * 2); |
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/* Clear the screen and set the cursor position. */ |
memsetw(videoram, SCREEN, 0x0720); |
memsetw(backbuf, SCREEN, 0x0720); |
ega_move_cursor(); |
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chardev_initialize("ega_out", &ega_console, &ega_ops); |
stdout = &ega_console; |
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ega_parea.pbase = videoram_phys; |
ega_parea.vbase = (uintptr_t) videoram; |
ega_parea.frames = 1; |
ega_parea.cacheable = false; |
ddi_parea_register(&ega_parea); |
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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.blinking", NULL, true); |
sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys); |
} |
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static void ega_display_char(char ch) |
{ |
videoram[ega_cursor * 2] = ch; |
backbuf[ega_cursor * 2] = ch; |
} |
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/* |
* This function takes care of scrolling. |
*/ |
127,13 → 81,29 |
ega_cursor = ega_cursor - ROW; |
} |
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void ega_putchar(chardev_t *d __attribute__((unused)), const char ch) |
static void ega_move_cursor(void) |
{ |
outb(ega_base + EGA_INDEX_REG, 0xe); |
outb(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
outb(ega_base + EGA_INDEX_REG, 0xf); |
outb(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff)); |
} |
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static void ega_display_char(char ch, bool silent) |
{ |
backbuf[ega_cursor * 2] = ch; |
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if (!silent) |
videoram[ega_cursor * 2] = ch; |
} |
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static void ega_putchar(chardev_t *d __attribute__((unused)), const char ch, bool silent) |
{ |
ipl_t ipl; |
|
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ipl = interrupts_disable(); |
spinlock_lock(&egalock); |
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switch (ch) { |
case '\n': |
ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; |
146,23 → 116,54 |
ega_cursor--; |
break; |
default: |
ega_display_char(ch); |
ega_display_char(ch, silent); |
ega_cursor++; |
break; |
} |
ega_check_cursor(); |
ega_move_cursor(); |
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if (!silent) |
ega_move_cursor(); |
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spinlock_unlock(&egalock); |
interrupts_restore(ipl); |
} |
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void ega_move_cursor(void) |
static chardev_operations_t ega_ops = { |
.write = ega_putchar |
}; |
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void ega_init(ioport_t base, uintptr_t videoram_phys) |
{ |
outb(ega_base + EGA_INDEX_REG, 0xe); |
outb(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
outb(ega_base + EGA_INDEX_REG, 0xf); |
outb(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff)); |
/* Initialize the software structure. */ |
ega_base = base; |
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backbuf = (uint8_t *) malloc(SCREEN * 2, 0); |
if (!backbuf) |
panic("Unable to allocate backbuffer."); |
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videoram = (uint8_t *) hw_map(videoram_phys, SCREEN * 2); |
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/* Clear the screen and set the cursor position. */ |
memsetw(videoram, SCREEN, 0x0720); |
memsetw(backbuf, SCREEN, 0x0720); |
ega_move_cursor(); |
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chardev_initialize("ega_out", &ega_console, &ega_ops); |
stdout = &ega_console; |
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ega_parea.pbase = videoram_phys; |
ega_parea.vbase = (uintptr_t) videoram; |
ega_parea.frames = 1; |
ega_parea.cacheable = false; |
ddi_parea_register(&ega_parea); |
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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.blinking", NULL, true); |
sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys); |
} |
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void ega_redraw(void) |