| 0,0 → 1,92 |
|---|
| /* |
| * Copyright (C) 2005 Martin Decky |
| * 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. |
| */ |
| |
| #include <arch/vga.h> |
| #include <putchar.h> |
| #include <mm/page.h> |
| #include <synch/spinlock.h> |
| #include <arch/types.h> |
| #include <arch/asm.h> |
| |
| static spinlock_t vgalock; |
| static __u32 vga_cursor; |
| |
| void vga_move_cursor(void); |
| |
| void vga_init(void) |
| { |
| } |
| |
| void vga_display_char(char ch) |
| { |
| // __u8 *vram = (__u8 *) PA2KA(VIDEORAM); |
| |
| // vram[vga_cursor*2] = ch; |
| } |
| |
| /* |
| * This function takes care of scrolling. |
| */ |
| void vga_check_cursor(void) |
| { |
| } |
| |
| void vga_putchar(const char ch) |
| { |
| pri_t pri; |
| |
| pri = cpu_priority_high(); |
| spinlock_lock(&vgalock); |
| |
| switch (ch) { |
| case '\n': |
| vga_cursor = (vga_cursor + ROW) - vga_cursor % ROW; |
| break; |
| case '\t': |
| vga_cursor = (vga_cursor + 8) - vga_cursor % 8; |
| break; |
| default: |
| vga_display_char(ch); |
| vga_cursor++; |
| break; |
| } |
| vga_check_cursor(); |
| vga_move_cursor(); |
| |
| spinlock_unlock(&vgalock); |
| cpu_priority_restore(pri); |
| } |
| |
| void vga_move_cursor(void) |
| { |
| } |
| |
| void putchar(const char ch) |
| { |
| vga_putchar(ch); |
| } |