merge mainline into bidi
This commit is contained in:
Vladimir 'phcoder' Serbinenko
commit
7dcef22cd3
5 changed files with 475 additions and 528 deletions
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@ -1,526 +0,0 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2000,2001,2002,2003,2004,2005,2007,2008,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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// TODO: Deprecated and broken. Needs to be converted to Video Driver!
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#include <grub/machine/vga.h>
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#include <grub/machine/console.h>
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#include <grub/cpu/io.h>
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#include <grub/term.h>
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#include <grub/types.h>
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#include <grub/dl.h>
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#include <grub/misc.h>
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#include <grub/font.h>
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#define DEBUG_VGA 0
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#define VGA_WIDTH 640
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#define VGA_HEIGHT 350
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#define CHAR_WIDTH 8
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#define CHAR_HEIGHT 16
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#define TEXT_WIDTH (VGA_WIDTH / CHAR_WIDTH)
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#define TEXT_HEIGHT (VGA_HEIGHT / CHAR_HEIGHT)
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#define VGA_MEM ((grub_uint8_t *) GRUB_MEMORY_MACHINE_VGA_ADDR)
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#define PAGE_OFFSET(x) ((x) * (VGA_WIDTH * VGA_HEIGHT / 8))
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#define DEFAULT_FG_COLOR 0xa
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#define DEFAULT_BG_COLOR 0x0
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struct colored_char
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{
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/* An Unicode codepoint. */
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grub_uint32_t code;
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/* Color indexes. */
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unsigned char fg_color;
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unsigned char bg_color;
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/* The width of this character minus one. */
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unsigned char width;
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/* The column index of this character. */
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unsigned char index;
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};
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static unsigned char text_mode;
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static unsigned xpos, ypos;
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static int cursor_state;
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static unsigned char fg_color, bg_color;
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static struct colored_char text_buf[TEXT_WIDTH * TEXT_HEIGHT];
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static unsigned char saved_map_mask;
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static int page = 0;
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static grub_font_t font = 0;
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#define SEQUENCER_ADDR_PORT 0x3C4
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#define SEQUENCER_DATA_PORT 0x3C5
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#define MAP_MASK_REGISTER 0x02
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#define CRTC_ADDR_PORT 0x3D4
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#define CRTC_DATA_PORT 0x3D5
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#define START_ADDR_HIGH_REGISTER 0x0C
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#define START_ADDR_LOW_REGISTER 0x0D
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#define GRAPHICS_ADDR_PORT 0x3CE
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#define GRAPHICS_DATA_PORT 0x3CF
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#define READ_MAP_REGISTER 0x04
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#define INPUT_STATUS1_REGISTER 0x3DA
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#define INPUT_STATUS1_VERTR_BIT 0x08
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static inline void
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wait_vretrace (void)
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{
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/* Wait until there is a vertical retrace. */
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while (! (grub_inb (INPUT_STATUS1_REGISTER) & INPUT_STATUS1_VERTR_BIT));
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}
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/* Get Map Mask Register. */
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static unsigned char
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get_map_mask (void)
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{
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unsigned char old_addr;
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unsigned char old_data;
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old_addr = grub_inb (SEQUENCER_ADDR_PORT);
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grub_outb (MAP_MASK_REGISTER, SEQUENCER_ADDR_PORT);
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old_data = grub_inb (SEQUENCER_DATA_PORT);
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grub_outb (old_addr, SEQUENCER_ADDR_PORT);
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return old_data;
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}
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/* Set Map Mask Register. */
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static void
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set_map_mask (unsigned char mask)
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{
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unsigned char old_addr;
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old_addr = grub_inb (SEQUENCER_ADDR_PORT);
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grub_outb (MAP_MASK_REGISTER, SEQUENCER_ADDR_PORT);
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grub_outb (mask, SEQUENCER_DATA_PORT);
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grub_outb (old_addr, SEQUENCER_ADDR_PORT);
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}
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/* Set Read Map Register. */
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static void
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set_read_map (unsigned char map)
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{
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unsigned char old_addr;
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old_addr = grub_inb (GRAPHICS_ADDR_PORT);
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grub_outb (READ_MAP_REGISTER, GRAPHICS_ADDR_PORT);
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grub_outb (map, GRAPHICS_DATA_PORT);
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grub_outb (old_addr, GRAPHICS_ADDR_PORT);
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}
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/* Set start address. */
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static void
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set_start_address (unsigned int start)
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{
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unsigned char old_addr;
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old_addr = grub_inb (CRTC_ADDR_PORT);
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grub_outb (START_ADDR_LOW_REGISTER, CRTC_ADDR_PORT);
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grub_outb (start & 0xFF, CRTC_DATA_PORT);
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grub_outb (START_ADDR_HIGH_REGISTER, CRTC_ADDR_PORT);
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grub_outb (start >> 8, CRTC_DATA_PORT);
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grub_outb (old_addr, CRTC_ADDR_PORT);
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}
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static grub_err_t
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grub_vga_mod_init (struct grub_term_output *term __attribute__ ((unused)))
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{
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text_mode = grub_vga_set_mode (0x10);
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cursor_state = 1;
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fg_color = DEFAULT_FG_COLOR;
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bg_color = DEFAULT_BG_COLOR;
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saved_map_mask = get_map_mask ();
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set_map_mask (0x0f);
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set_start_address (PAGE_OFFSET (page));
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font = grub_font_get (""); /* Choose any font, for now. */
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if (!font)
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return grub_error (GRUB_ERR_BAD_FONT, "no font loaded");
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_vga_mod_fini (struct grub_term_output *term __attribute__ ((unused)))
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{
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set_map_mask (saved_map_mask);
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grub_vga_set_mode (text_mode);
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return GRUB_ERR_NONE;
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}
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static int
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check_vga_mem (void *p)
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{
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return (p >= (void *) (VGA_MEM + PAGE_OFFSET (page))
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&& p <= (void *) (VGA_MEM + PAGE_OFFSET (page)
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+ VGA_WIDTH * VGA_HEIGHT / 8));
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}
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static void
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write_char (void)
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{
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struct colored_char *p = text_buf + xpos + ypos * TEXT_WIDTH;
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struct grub_font_glyph *glyph;
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unsigned char *mem_base;
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unsigned plane;
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mem_base = (VGA_MEM + xpos +
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ypos * CHAR_HEIGHT * TEXT_WIDTH + PAGE_OFFSET (page)) - p->index;
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p -= p->index;
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/* Get glyph for character. */
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glyph = grub_font_get_glyph (font, p->code);
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for (plane = 0x01; plane <= 0x08; plane <<= 1)
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{
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unsigned y;
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unsigned offset;
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unsigned char *mem;
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set_map_mask (plane);
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for (y = 0, offset = 0, mem = mem_base;
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y < CHAR_HEIGHT;
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y++, mem += TEXT_WIDTH)
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{
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/* TODO Re-implement glyph drawing for vga module. */
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#if 0
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unsigned i;
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unsigned char_width = 1; /* TODO Figure out wide characters. */
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for (i = 0; i < char_width && offset < 32; i++)
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{
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unsigned char fg_mask, bg_mask;
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fg_mask = (p->fg_color & plane) ? glyph->bitmap[offset] : 0;
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bg_mask = (p->bg_color & plane) ? ~(glyph->bitmap[offset]) : 0;
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offset++;
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if (check_vga_mem (mem + i))
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mem[i] = (fg_mask | bg_mask);
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}
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#endif /* 0 */
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}
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}
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set_map_mask (0x0f);
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}
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static void
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write_cursor (void)
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{
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unsigned char *mem = (VGA_MEM + PAGE_OFFSET (page) + xpos
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+ (ypos * CHAR_HEIGHT + CHAR_HEIGHT - 3) * TEXT_WIDTH);
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if (check_vga_mem (mem))
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*mem = 0xff;
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mem += TEXT_WIDTH;
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if (check_vga_mem (mem))
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*mem = 0xff;
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}
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static void
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scroll_up (void)
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{
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unsigned i;
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unsigned plane;
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/* Do all the work in the other page. */
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grub_memmove (text_buf, text_buf + TEXT_WIDTH,
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sizeof (struct colored_char) * TEXT_WIDTH * (TEXT_HEIGHT - 1));
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for (i = TEXT_WIDTH * (TEXT_HEIGHT - 1); i < TEXT_WIDTH * TEXT_HEIGHT; i++)
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{
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text_buf[i].code = ' ';
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text_buf[i].fg_color = 0;
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text_buf[i].bg_color = 0;
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text_buf[i].width = 0;
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text_buf[i].index = 0;
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}
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for (plane = 1; plane <= 4; plane++)
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{
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set_read_map (plane);
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set_map_mask (1 << plane);
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grub_memmove (VGA_MEM + PAGE_OFFSET (1 - page), VGA_MEM
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+ PAGE_OFFSET (page) + VGA_WIDTH * CHAR_HEIGHT / 8,
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VGA_WIDTH * (VGA_HEIGHT - CHAR_HEIGHT) / 8);
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}
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set_map_mask (0x0f);
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grub_memset (VGA_MEM + PAGE_OFFSET (1 - page)
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+ VGA_WIDTH * (VGA_HEIGHT - CHAR_HEIGHT) / 8, 0,
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VGA_WIDTH * CHAR_HEIGHT / 8);
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/* Activate the other page. */
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page = 1 - page;
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wait_vretrace ();
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set_start_address (PAGE_OFFSET (page));
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}
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static void
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grub_vga_putchar (struct grub_term_output *term __attribute__ ((unused)),
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const struct grub_unicode_glyph *c)
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{
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#if DEBUG_VGA
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static int show = 1;
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#endif
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if (c->base == '\a')
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/* FIXME */
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return;
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if (c->base == '\b' || c->base == '\n' || c->base == '\r')
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{
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/* Erase current cursor, if any. */
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if (cursor_state)
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write_char ();
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switch (c->base)
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{
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case '\b':
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if (xpos > 0)
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xpos--;
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break;
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case '\n':
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if (ypos >= TEXT_HEIGHT - 1)
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scroll_up ();
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else
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ypos++;
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break;
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case '\r':
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xpos = 0;
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break;
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}
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if (cursor_state)
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write_cursor ();
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}
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else
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{
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struct grub_font_glyph *glyph;
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struct colored_char *p;
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unsigned char_width = 1;
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glyph = grub_font_get_glyph(font, c->base);
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if (xpos + char_width > TEXT_WIDTH)
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{
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xpos = 0;
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if (ypos >= TEXT_HEIGHT - 1)
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scroll_up ();
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else
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ypos++;
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}
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p = text_buf + xpos + ypos * TEXT_WIDTH;
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p->code = c->base;
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p->fg_color = fg_color;
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p->bg_color = bg_color;
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p->width = char_width - 1;
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p->index = 0;
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if (char_width > 1)
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{
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unsigned i;
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for (i = 1; i < char_width; i++)
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{
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p[i].code = ' ';
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p[i].width = char_width - 1;
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p[i].index = i;
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}
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}
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write_char ();
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xpos += char_width;
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if (xpos >= TEXT_WIDTH)
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{
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xpos = 0;
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if (ypos >= TEXT_HEIGHT - 1)
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scroll_up ();
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else
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ypos++;
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}
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if (cursor_state)
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write_cursor ();
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}
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#if DEBUG_VGA
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if (show)
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{
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grub_uint16_t pos = grub_getxy ();
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show = 0;
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grub_gotoxy (0, 0);
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grub_printf ("[%u:%u]", (unsigned) (pos >> 8), (unsigned) (pos & 0xff));
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grub_gotoxy (pos >> 8, pos & 0xff);
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show = 1;
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}
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#endif
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}
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static grub_ssize_t
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grub_vga_getcharwidth (struct grub_term_output *term __attribute__ ((unused)),
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const struct grub_unicode_glyph *c)
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{
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#if 0
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struct grub_font_glyph glyph;
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glyph = grub_font_get_glyph (c->base);
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return glyph.char_width;
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#else
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(void) c; /* Prevent warning. */
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return 1; /* TODO Fix wide characters? */
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#endif
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}
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static grub_uint16_t
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grub_vga_getwh (struct grub_term_output *term __attribute__ ((unused)))
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{
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return (TEXT_WIDTH << 8) | TEXT_HEIGHT;
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}
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static grub_uint16_t
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grub_vga_getxy (struct grub_term_output *term __attribute__ ((unused)))
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{
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return ((xpos << 8) | ypos);
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}
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static void
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grub_vga_gotoxy (struct grub_term_output *term __attribute__ ((unused)),
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grub_uint8_t x, grub_uint8_t y)
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{
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if (x >= TEXT_WIDTH || y >= TEXT_HEIGHT)
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{
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grub_error (GRUB_ERR_OUT_OF_RANGE, "invalid point (%u,%u)",
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(unsigned) x, (unsigned) y);
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return;
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}
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||||
|
||||
if (cursor_state)
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write_char ();
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xpos = x;
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ypos = y;
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|
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if (cursor_state)
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write_cursor ();
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}
|
||||
|
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static void
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grub_vga_cls (struct grub_term_output *term __attribute__ ((unused)))
|
||||
{
|
||||
unsigned i;
|
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|
||||
wait_vretrace ();
|
||||
for (i = 0; i < TEXT_WIDTH * TEXT_HEIGHT; i++)
|
||||
{
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||||
text_buf[i].code = ' ';
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text_buf[i].fg_color = 0;
|
||||
text_buf[i].bg_color = 0;
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text_buf[i].width = 0;
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text_buf[i].index = 0;
|
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}
|
||||
|
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grub_memset (VGA_MEM + PAGE_OFFSET (page), 0, VGA_WIDTH * VGA_HEIGHT / 8);
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|
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xpos = ypos = 0;
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}
|
||||
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||||
static void
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grub_vga_setcolorstate (struct grub_term_output *term __attribute__ ((unused)),
|
||||
grub_term_color_state state)
|
||||
{
|
||||
switch (state)
|
||||
{
|
||||
case GRUB_TERM_COLOR_STANDARD:
|
||||
case GRUB_TERM_COLOR_NORMAL:
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||||
fg_color = DEFAULT_FG_COLOR;
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||||
bg_color = DEFAULT_BG_COLOR;
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||||
break;
|
||||
case GRUB_TERM_COLOR_HIGHLIGHT:
|
||||
fg_color = DEFAULT_BG_COLOR;
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||||
bg_color = DEFAULT_FG_COLOR;
|
||||
break;
|
||||
default:
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||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
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||||
grub_vga_setcursor (struct grub_term_output *term __attribute__ ((unused)),
|
||||
int on)
|
||||
{
|
||||
if (cursor_state != on)
|
||||
{
|
||||
if (cursor_state)
|
||||
write_char ();
|
||||
else
|
||||
write_cursor ();
|
||||
|
||||
cursor_state = on;
|
||||
}
|
||||
}
|
||||
|
||||
static struct grub_term_output grub_vga_term =
|
||||
{
|
||||
.name = "vga",
|
||||
.init = grub_vga_mod_init,
|
||||
.fini = grub_vga_mod_fini,
|
||||
.putchar = grub_vga_putchar,
|
||||
.getcharwidth = grub_vga_getcharwidth,
|
||||
.getwh = grub_vga_getwh,
|
||||
.getxy = grub_vga_getxy,
|
||||
.gotoxy = grub_vga_gotoxy,
|
||||
.cls = grub_vga_cls,
|
||||
.setcolorstate = grub_vga_setcolorstate,
|
||||
.setcursor = grub_vga_setcursor,
|
||||
.flags = GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS,
|
||||
.normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR,
|
||||
.highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR,
|
||||
};
|
||||
|
||||
GRUB_MOD_INIT(vga)
|
||||
{
|
||||
grub_term_register_output ("vga", &grub_vga_term);
|
||||
}
|
||||
|
||||
GRUB_MOD_FINI(vga)
|
||||
{
|
||||
grub_term_unregister_output (&grub_vga_term);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue