0,0 → 1,587 |
/* |
* Copyright (c) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup genarch_drivers |
* @{ |
*/ |
/** |
* @file |
* @brief EGA driver. |
*/ |
|
#include <genarch/drivers/ega/ega.h> |
#include <putchar.h> |
#include <mm/page.h> |
#include <mm/as.h> |
#include <mm/slab.h> |
#include <arch/mm/page.h> |
#include <synch/spinlock.h> |
#include <arch/types.h> |
#include <arch/asm.h> |
#include <memstr.h> |
#include <string.h> |
#include <console/chardev.h> |
#include <console/console.h> |
#include <sysinfo/sysinfo.h> |
#include <ddi/ddi.h> |
|
/* |
* The EGA driver. |
* Simple and short. Function for displaying characters and "scrolling". |
*/ |
|
SPINLOCK_INITIALIZE(egalock); |
static uint32_t ega_cursor; |
static uint8_t *videoram; |
static uint8_t *backbuf; |
static ioport8_t *ega_base; |
|
#define SPACE 0x20 |
#define STYLE 0x1e |
#define INVAL 0x17 |
|
#define EMPTY_CHAR ((STYLE << 8) | SPACE) |
|
static uint16_t ega_oem_glyph(const wchar_t ch) |
{ |
if ((ch >= 0x0000) && (ch <= 0x007f)) |
return ch; |
|
if (ch == 0x00a0) |
return 255; |
|
if (ch == 0x00a1) |
return 173; |
|
if ((ch >= 0x00a2) && (ch <= 0x00a3)) |
return (ch - 7); |
|
if (ch == 0x00a5) |
return 157; |
|
if (ch == 0x00aa) |
return 166; |
|
if (ch == 0x00ab) |
return 174; |
|
if (ch == 0x00ac) |
return 170; |
|
if (ch == 0x00b0) |
return 248; |
|
if (ch == 0x00b1) |
return 241; |
|
if (ch == 0x00b2) |
return 253; |
|
if (ch == 0x00b5) |
return 230; |
|
if (ch == 0x00b7) |
return 250; |
|
if (ch == 0x00ba) |
return 167; |
|
if (ch == 0x00bb) |
return 175; |
|
if (ch == 0x00bc) |
return 172; |
|
if (ch == 0x00bd) |
return 171; |
|
if (ch == 0x00bf) |
return 168; |
|
if ((ch >= 0x00c4) && (ch <= 0x00c5)) |
return (ch - 54); |
|
if (ch == 0x00c6) |
return 146; |
|
if (ch == 0x00c7) |
return 128; |
|
if (ch == 0x00c9) |
return 144; |
|
if (ch == 0x00d1) |
return 165; |
|
if (ch == 0x00d6) |
return 153; |
|
if (ch == 0x00dc) |
return 154; |
|
if (ch == 0x00df) |
return 225; |
|
if (ch == 0x00e0) |
return 133; |
|
if (ch == 0x00e1) |
return 160; |
|
if (ch == 0x00e2) |
return 131; |
|
if (ch == 0x00e4) |
return 132; |
|
if (ch == 0x00e5) |
return 134; |
|
if (ch == 0x00e6) |
return 145; |
|
if (ch == 0x00e7) |
return 135; |
|
if (ch == 0x00e8) |
return 138; |
|
if (ch == 0x00e9) |
return 130; |
|
if ((ch >= 0x00ea) && (ch <= 0x00eb)) |
return (ch - 98); |
|
if (ch == 0x00ec) |
return 141; |
|
if (ch == 0x00ed) |
return 161; |
|
if (ch == 0x00ee) |
return 140; |
|
if (ch == 0x00ef) |
return 139; |
|
if (ch == 0x00f1) |
return 164; |
|
if (ch == 0x00f2) |
return 149; |
|
if (ch == 0x00f3) |
return 162; |
|
if (ch == 0x00f4) |
return 147; |
|
if (ch == 0x00f6) |
return 148; |
|
if (ch == 0x00f7) |
return 246; |
|
if (ch == 0x00f9) |
return 151; |
|
if (ch == 0x00fa) |
return 163; |
|
if (ch == 0x00fb) |
return 150; |
|
if (ch == 0x00fc) |
return 129; |
|
if (ch == 0x00ff) |
return 152; |
|
if (ch == 0x0192) |
return 159; |
|
if (ch == 0x0393) |
return 226; |
|
if (ch == 0x0398) |
return 233; |
|
if (ch == 0x03a3) |
return 228; |
|
if (ch == 0x03a6) |
return 232; |
|
if (ch == 0x03a9) |
return 234; |
|
if (ch == 0x03b1) |
return 224; |
|
if (ch == 0x03b4) |
return 235; |
|
if (ch == 0x03b5) |
return 238; |
|
if (ch == 0x03c0) |
return 227; |
|
if (ch == 0x03c3) |
return 229; |
|
if (ch == 0x03c4) |
return 231; |
|
if (ch == 0x03c6) |
return 237; |
|
if (ch == 0x207f) |
return 252; |
|
if (ch == 0x20a7) |
return 158; |
|
if (ch == 0x2219) |
return 249; |
|
if (ch == 0x221a) |
return 251; |
|
if (ch == 0x221e) |
return 236; |
|
if (ch == 0x2229) |
return 239; |
|
if (ch == 0x2248) |
return 247; |
|
if (ch == 0x2261) |
return 240; |
|
if (ch == 0x2264) |
return 243; |
|
if (ch == 0x2265) |
return 242; |
|
if (ch == 0x2310) |
return 169; |
|
if ((ch >= 0x2320) && (ch <= 0x2321)) |
return (ch - 8748); |
|
if (ch == 0x2500) |
return 196; |
|
if (ch == 0x2502) |
return 179; |
|
if (ch == 0x250c) |
return 218; |
|
if (ch == 0x2510) |
return 191; |
|
if (ch == 0x2514) |
return 192; |
|
if (ch == 0x2518) |
return 217; |
|
if (ch == 0x251c) |
return 195; |
|
if (ch == 0x2524) |
return 180; |
|
if (ch == 0x252c) |
return 194; |
|
if (ch == 0x2534) |
return 193; |
|
if (ch == 0x253c) |
return 197; |
|
if (ch == 0x2550) |
return 205; |
|
if (ch == 0x2551) |
return 186; |
|
if ((ch >= 0x2552) && (ch <= 0x2553)) |
return (ch - 9341); |
|
if (ch == 0x2554) |
return 201; |
|
if (ch == 0x2555) |
return 184; |
|
if (ch == 0x2556) |
return 183; |
|
if (ch == 0x2557) |
return 187; |
|
if (ch == 0x2558) |
return 212; |
|
if (ch == 0x2559) |
return 211; |
|
if (ch == 0x255a) |
return 200; |
|
if (ch == 0x255b) |
return 190; |
|
if (ch == 0x255c) |
return 189; |
|
if (ch == 0x255d) |
return 188; |
|
if ((ch >= 0x255e) && (ch <= 0x255f)) |
return (ch - 9368); |
|
if (ch == 0x2560) |
return 204; |
|
if ((ch >= 0x2561) && (ch <= 0x2562)) |
return (ch - 9388); |
|
if (ch == 0x2563) |
return 185; |
|
if ((ch >= 0x2564) && (ch <= 0x2565)) |
return (ch - 9363); |
|
if (ch == 0x2566) |
return 203; |
|
if ((ch >= 0x2567) && (ch <= 0x2568)) |
return (ch - 9368); |
|
if (ch == 0x2569) |
return 202; |
|
if (ch == 0x256a) |
return 216; |
|
if (ch == 0x256b) |
return 215; |
|
if (ch == 0x256c) |
return 206; |
|
if (ch == 0x2580) |
return 223; |
|
if (ch == 0x2584) |
return 220; |
|
if (ch == 0x2588) |
return 219; |
|
if (ch == 0x258c) |
return 221; |
|
if (ch == 0x2590) |
return 222; |
|
if ((ch >= 0x2591) && (ch <= 0x2593)) |
return (ch - 9441); |
|
return 256; |
} |
|
/* |
* This function takes care of scrolling. |
*/ |
static void ega_check_cursor(bool silent) |
{ |
if (ega_cursor < EGA_SCREEN) |
return; |
|
memmove((void *) backbuf, (void *) (backbuf + EGA_COLS * 2), |
(EGA_SCREEN - EGA_COLS) * 2); |
memsetw(backbuf + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
|
if (!silent) { |
memmove((void *) videoram, (void *) (videoram + EGA_COLS * 2), |
(EGA_SCREEN - EGA_COLS) * 2); |
memsetw(videoram + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
} |
|
ega_cursor = ega_cursor - EGA_COLS; |
} |
|
static void ega_show_cursor(bool silent) |
{ |
if (!silent) { |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0a); |
uint8_t stat = pio_read_8(ega_base + EGA_DATA_REG); |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0a); |
pio_write_8(ega_base + EGA_DATA_REG, stat & (~(1 << 5))); |
} |
} |
|
static void ega_move_cursor(bool silent) |
{ |
if (!silent) { |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0e); |
pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0f); |
pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff)); |
} |
} |
|
static void ega_sync_cursor(bool silent) |
{ |
if (!silent) { |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0e); |
uint8_t hi = pio_read_8(ega_base + EGA_DATA_REG); |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0f); |
uint8_t lo = pio_read_8(ega_base + EGA_DATA_REG); |
|
ega_cursor = (hi << 8) | lo; |
} else |
ega_cursor = 0; |
|
if (ega_cursor >= EGA_SCREEN) |
ega_cursor = 0; |
|
if ((ega_cursor % EGA_COLS) != 0) |
ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
|
memsetw(backbuf + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
|
if (!silent) |
memsetw(videoram + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
|
ega_check_cursor(silent); |
ega_move_cursor(silent); |
ega_show_cursor(silent); |
} |
|
static void ega_display_char(wchar_t ch, bool silent) |
{ |
uint16_t index = ega_oem_glyph(ch); |
uint8_t glyph; |
uint8_t style; |
|
if ((index >> 8)) { |
glyph = U_SPECIAL; |
style = INVAL; |
} else { |
glyph = index & 0xff; |
style = STYLE; |
} |
|
backbuf[ega_cursor * 2] = glyph; |
backbuf[ega_cursor * 2 + 1] = style; |
|
if (!silent) { |
videoram[ega_cursor * 2] = glyph; |
videoram[ega_cursor * 2 + 1] = style; |
} |
} |
|
static void ega_putchar(outdev_t *dev __attribute__((unused)), wchar_t ch, bool silent) |
{ |
ipl_t ipl; |
|
ipl = interrupts_disable(); |
spinlock_lock(&egalock); |
|
switch (ch) { |
case '\n': |
ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
break; |
case '\t': |
ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
break; |
case '\b': |
if (ega_cursor % EGA_COLS) |
ega_cursor--; |
break; |
default: |
ega_display_char(ch, silent); |
ega_cursor++; |
break; |
} |
ega_check_cursor(silent); |
ega_move_cursor(silent); |
|
spinlock_unlock(&egalock); |
interrupts_restore(ipl); |
} |
|
static outdev_t ega_console; |
static outdev_operations_t ega_ops = { |
.write = ega_putchar |
}; |
|
void ega_init(ioport8_t *base, uintptr_t videoram_phys) |
{ |
/* Initialize the software structure. */ |
ega_base = base; |
|
backbuf = (uint8_t *) malloc(EGA_VRAM_SIZE, 0); |
if (!backbuf) |
panic("Unable to allocate backbuffer."); |
|
videoram = (uint8_t *) hw_map(videoram_phys, EGA_VRAM_SIZE); |
|
/* Synchronize the back buffer and cursor position. */ |
memcpy(backbuf, videoram, EGA_VRAM_SIZE); |
ega_sync_cursor(silent); |
|
outdev_initialize("ega", &ega_console, &ega_ops); |
stdout = &ega_console; |
|
sysinfo_set_item_val("fb", NULL, true); |
sysinfo_set_item_val("fb.kind", NULL, 2); |
sysinfo_set_item_val("fb.width", NULL, EGA_COLS); |
sysinfo_set_item_val("fb.height", NULL, EGA_ROWS); |
sysinfo_set_item_val("fb.blinking", NULL, true); |
sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys); |
} |
|
void ega_redraw(void) |
{ |
memcpy(videoram, backbuf, EGA_VRAM_SIZE); |
ega_move_cursor(silent); |
ega_show_cursor(silent); |
} |
|
/** @} |
*/ |
Property changes: |
Added: svn:mergeinfo |