[SeaBIOS] [PATCH 05/20] vgabios: Rename vga.c to vgabios.c.
Kevin O'Connor
kevin at koconnor.net
Sun Jan 1 18:21:18 CET 2012
Also, rename vgatables.h to vgabios.h.
Signed-off-by: Kevin O'Connor <kevin at koconnor.net>
---
Makefile | 2 +-
vgasrc/bochsvga.c | 4 +-
vgasrc/bochsvga.h | 6 +-
vgasrc/clext.c | 2 +-
vgasrc/geodelx.c | 2 +-
vgasrc/vga.c | 1596 ----------------------------------------------------
vgasrc/vgabios.c | 1596 ++++++++++++++++++++++++++++++++++++++++++++++++++++
vgasrc/vgabios.h | 225 ++++++++
vgasrc/vgafb.c | 2 +-
vgasrc/vgafonts.c | 2 +-
vgasrc/vgaio.c | 2 +-
vgasrc/vgatables.c | 2 +-
vgasrc/vgatables.h | 225 --------
13 files changed, 1833 insertions(+), 1833 deletions(-)
delete mode 100644 vgasrc/vga.c
create mode 100644 vgasrc/vgabios.c
create mode 100644 vgasrc/vgabios.h
delete mode 100644 vgasrc/vgatables.h
diff --git a/Makefile b/Makefile
index 3d60b88..2346ee3 100644
--- a/Makefile
+++ b/Makefile
@@ -169,7 +169,7 @@ $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
################ VGA build rules
# VGA src files
-SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
+SRCVGA=src/output.c src/util.c vgasrc/vgabios.c vgasrc/vgafb.c vgasrc/vgaio.c \
vgasrc/vgatables.c vgasrc/vgafonts.c \
vgasrc/clext.c vgasrc/bochsvga.c vgasrc/geodelx.c
diff --git a/vgasrc/bochsvga.c b/vgasrc/bochsvga.c
index 99d4041..9dd142b 100644
--- a/vgasrc/bochsvga.c
+++ b/vgasrc/bochsvga.c
@@ -1,8 +1,8 @@
-#include "vgatables.h"
+#include "vgabios.h" // struct vbe_modeinfo
#include "vbe.h"
#include "bochsvga.h"
#include "util.h"
-#include "config.h" // CONFIG_
+#include "config.h" // CONFIG_*
#include "biosvar.h" // SET_BDA
static struct mode
diff --git a/vgasrc/bochsvga.h b/vgasrc/bochsvga.h
index aaa3a97..f0263d7 100644
--- a/vgasrc/bochsvga.h
+++ b/vgasrc/bochsvga.h
@@ -1,5 +1,5 @@
-#ifndef __DISPI_H
-#define __DISPI_H
+#ifndef __BOCHSVGA_H
+#define __BOCHSVGA_H
#include "types.h" // u8
#include "ioport.h" // outb
@@ -64,4 +64,4 @@ void bochsvga_clear_scr(void);
int bochsvga_hires_enabled(void);
u16 bochsvga_curr_mode(void);
-#endif
+#endif // bochsvga.h
diff --git a/vgasrc/clext.c b/vgasrc/clext.c
index b2c59fb..40447ff 100644
--- a/vgasrc/clext.c
+++ b/vgasrc/clext.c
@@ -5,7 +5,7 @@
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
-#include "vgatables.h" // cirrus_init
+#include "vgabios.h" // cirrus_init
#include "biosvar.h" // GET_GLOBAL
#include "util.h" // dprintf
#include "bregs.h" // struct bregs
diff --git a/vgasrc/geodelx.c b/vgasrc/geodelx.c
index 6c0f838..1d58be0 100644
--- a/vgasrc/geodelx.c
+++ b/vgasrc/geodelx.c
@@ -10,7 +10,7 @@
#include "ioport.h" // outb
#include "farptr.h" // SET_FARVAR
#include "biosvar.h" // GET_BDA
-#include "vgatables.h" // VGAREG_*
+#include "vgabios.h" // VGAREG_*
#include "util.h" // memset
#include "config.h"
#include "types.h"
diff --git a/vgasrc/vga.c b/vgasrc/vga.c
deleted file mode 100644
index 9e5884b..0000000
--- a/vgasrc/vga.c
+++ /dev/null
@@ -1,1596 +0,0 @@
-// VGA bios implementation
-//
-// Copyright (C) 2009 Kevin O'Connor <kevin at koconnor.net>
-// Copyright (C) 2001-2008 the LGPL VGABios developers Team
-//
-// This file may be distributed under the terms of the GNU LGPLv3 license.
-
-
-// TODO:
-// * review correctness of converted asm by comparing with RBIL
-//
-// * convert vbe/clext code
-
-#include "bregs.h" // struct bregs
-#include "biosvar.h" // GET_BDA
-#include "util.h" // memset
-#include "vgatables.h" // find_vga_entry
-#include "optionroms.h" // struct pci_data
-#include "config.h" // CONFIG_*
-#include "vbe.h" // struct vbe_info
-#include "geodelx.h" // geodelx_init
-#include "bochsvga.h" // bochsvga_init
-
-// XXX
-#define DEBUG_VGA_POST 1
-#define DEBUG_VGA_10 3
-
-
-/****************************************************************
- * PCI Data
- ****************************************************************/
-#if CONFIG_VGA_PCI == 1
-struct pci_data rom_pci_data VAR16VISIBLE = {
- .signature = PCI_ROM_SIGNATURE,
- .vendor = CONFIG_VGA_VID,
- .device = CONFIG_VGA_DID,
- .dlen = 0x18,
- .class_hi = 0x300,
- .irevision = 1,
- .type = PCIROM_CODETYPE_X86,
- .indicator = 0x80,
-};
-#endif
-
-/****************************************************************
- * Helper functions
- ****************************************************************/
-
-static inline void
-call16_vgaint(u32 eax, u32 ebx)
-{
- asm volatile(
- "int $0x10\n"
- "cli\n"
- "cld"
- :
- : "a"(eax), "b"(ebx)
- : "cc", "memory");
-}
-
-static void
-perform_gray_scale_summing(u16 start, u16 count)
-{
- vgahw_screen_disable();
- int i;
- for (i = start; i < start+count; i++) {
- u8 rgb[3];
- vgahw_get_dac_regs(GET_SEG(SS), rgb, i, 1);
-
- // intensity = ( 0.3 * Red ) + ( 0.59 * Green ) + ( 0.11 * Blue )
- u16 intensity = ((77 * rgb[0] + 151 * rgb[1] + 28 * rgb[2]) + 0x80) >> 8;
- if (intensity > 0x3f)
- intensity = 0x3f;
-
- vgahw_set_dac_regs(GET_SEG(SS), rgb, i, 1);
- }
- vgahw_screen_enable();
-}
-
-static void
-set_cursor_shape(u8 start, u8 end)
-{
- start &= 0x3f;
- end &= 0x1f;
-
- u16 curs = (start << 8) + end;
- SET_BDA(cursor_type, curs);
-
- u8 modeset_ctl = GET_BDA(modeset_ctl);
- u16 cheight = GET_BDA(char_height);
- if ((modeset_ctl & 0x01) && (cheight > 8) && (end < 8) && (start < 0x20)) {
- if (end != (start + 1))
- start = ((start + 1) * cheight / 8) - 1;
- else
- start = ((end + 1) * cheight / 8) - 2;
- end = ((end + 1) * cheight / 8) - 1;
- }
- vgahw_set_cursor_shape(start, end);
-}
-
-static u16
-get_cursor_shape(u8 page)
-{
- if (page > 7)
- return 0;
- // FIXME should handle VGA 14/16 lines
- return GET_BDA(cursor_type);
-}
-
-static void
-set_cursor_pos(struct cursorpos cp)
-{
- // Should not happen...
- if (cp.page > 7)
- return;
-
- // Bios cursor pos
- SET_BDA(cursor_pos[cp.page], (cp.y << 8) | cp.x);
-
- // Set the hardware cursor
- u8 current = GET_BDA(video_page);
- if (cp.page != current)
- return;
-
- // Get the dimensions
- u16 nbcols = GET_BDA(video_cols);
- u16 nbrows = GET_BDA(video_rows) + 1;
-
- // Calculate the address knowing nbcols nbrows and page num
- u16 address = (SCREEN_IO_START(nbcols, nbrows, cp.page)
- + cp.x + cp.y * nbcols);
-
- vgahw_set_cursor_pos(address);
-}
-
-static struct cursorpos
-get_cursor_pos(u8 page)
-{
- if (page == 0xff)
- // special case - use current page
- page = GET_BDA(video_page);
- if (page > 7) {
- struct cursorpos cp = { 0, 0, 0xfe };
- return cp;
- }
- // FIXME should handle VGA 14/16 lines
- u16 xy = GET_BDA(cursor_pos[page]);
- struct cursorpos cp = {xy, xy>>8, page};
- return cp;
-}
-
-static void
-set_active_page(u8 page)
-{
- if (page > 7)
- return;
-
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
-
- // Get pos curs pos for the right page
- struct cursorpos cp = get_cursor_pos(page);
-
- u16 address;
- if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
- // Get the dimensions
- u16 nbcols = GET_BDA(video_cols);
- u16 nbrows = GET_BDA(video_rows) + 1;
-
- // Calculate the address knowing nbcols nbrows and page num
- address = SCREEN_MEM_START(nbcols, nbrows, page);
- SET_BDA(video_pagestart, address);
-
- // Start address
- address = SCREEN_IO_START(nbcols, nbrows, page);
- } else {
- address = page * GET_GLOBAL(vmode_g->slength);
- }
-
- vgahw_set_active_page(address);
-
- // And change the BIOS page
- SET_BDA(video_page, page);
-
- dprintf(1, "Set active page %02x address %04x\n", page, address);
-
- // Display the cursor, now the page is active
- set_cursor_pos(cp);
-}
-
-static void
-set_scan_lines(u8 lines)
-{
- vgahw_set_scan_lines(lines);
- if (lines == 8)
- set_cursor_shape(0x06, 0x07);
- else
- set_cursor_shape(lines - 4, lines - 3);
- SET_BDA(char_height, lines);
- u16 vde = vgahw_get_vde();
- u8 rows = vde / lines;
- SET_BDA(video_rows, rows - 1);
- u16 cols = GET_BDA(video_cols);
- SET_BDA(video_pagesize, rows * cols * 2);
-}
-
-
-/****************************************************************
- * Character writing
- ****************************************************************/
-
-// Scroll the screen one line. This function is designed to be called
-// tail-recursive to reduce stack usage.
-static void noinline
-scroll_one(u16 nbrows, u16 nbcols, u8 page)
-{
- struct cursorpos ul = {0, 0, page};
- struct cursorpos lr = {nbcols-1, nbrows-1, page};
- vgafb_scroll(1, -1, ul, lr);
-}
-
-// Write a character to the screen at a given position. Implement
-// special characters and scroll the screen if necessary.
-static void
-write_teletype(struct cursorpos *pcp, struct carattr ca)
-{
- struct cursorpos cp = *pcp;
-
- // Get the dimensions
- u16 nbrows = GET_BDA(video_rows) + 1;
- u16 nbcols = GET_BDA(video_cols);
-
- switch (ca.car) {
- case 7:
- //FIXME should beep
- break;
- case 8:
- if (cp.x > 0)
- cp.x--;
- break;
- case '\r':
- cp.x = 0;
- break;
- case '\n':
- cp.y++;
- break;
- case '\t':
- do {
- struct carattr dummyca = {' ', ca.attr, ca.use_attr};
- vgafb_write_char(cp, dummyca);
- cp.x++;
- } while (cp.x < nbcols && cp.x % 8);
- break;
- default:
- vgafb_write_char(cp, ca);
- cp.x++;
- }
-
- // Do we need to wrap ?
- if (cp.x == nbcols) {
- cp.x = 0;
- cp.y++;
- }
- // Do we need to scroll ?
- if (cp.y < nbrows) {
- *pcp = cp;
- return;
- }
- // Scroll screen
- cp.y--;
- *pcp = cp;
- scroll_one(nbrows, nbcols, cp.page);
-}
-
-// Write out a buffer of alternating characters and attributes.
-static void
-write_attr_string(struct cursorpos *pcp, u16 count, u16 seg, u8 *offset_far)
-{
- while (count--) {
- u8 car = GET_FARVAR(seg, *offset_far);
- offset_far++;
- u8 attr = GET_FARVAR(seg, *offset_far);
- offset_far++;
-
- struct carattr ca = {car, attr, 1};
- write_teletype(pcp, ca);
- }
-}
-
-// Write out a buffer of characters.
-static void
-write_string(struct cursorpos *pcp, u8 attr, u16 count, u16 seg, u8 *offset_far)
-{
- while (count--) {
- u8 car = GET_FARVAR(seg, *offset_far);
- offset_far++;
-
- struct carattr ca = {car, attr, 1};
- write_teletype(pcp, ca);
- }
-}
-
-
-/****************************************************************
- * Save and restore bda state
- ****************************************************************/
-
-static void
-save_bda_state(u16 seg, struct saveBDAstate *info)
-{
- SET_FARVAR(seg, info->video_mode, GET_BDA(video_mode));
- SET_FARVAR(seg, info->video_cols, GET_BDA(video_cols));
- SET_FARVAR(seg, info->video_pagesize, GET_BDA(video_pagesize));
- SET_FARVAR(seg, info->crtc_address, GET_BDA(crtc_address));
- SET_FARVAR(seg, info->video_rows, GET_BDA(video_rows));
- SET_FARVAR(seg, info->char_height, GET_BDA(char_height));
- SET_FARVAR(seg, info->video_ctl, GET_BDA(video_ctl));
- SET_FARVAR(seg, info->video_switches, GET_BDA(video_switches));
- SET_FARVAR(seg, info->modeset_ctl, GET_BDA(modeset_ctl));
- SET_FARVAR(seg, info->cursor_type, GET_BDA(cursor_type));
- u16 i;
- for (i=0; i<8; i++)
- SET_FARVAR(seg, info->cursor_pos[i], GET_BDA(cursor_pos[i]));
- SET_FARVAR(seg, info->video_pagestart, GET_BDA(video_pagestart));
- SET_FARVAR(seg, info->video_page, GET_BDA(video_page));
- /* current font */
- SET_FARVAR(seg, info->font0, GET_IVT(0x1f));
- SET_FARVAR(seg, info->font1, GET_IVT(0x43));
-}
-
-static void
-restore_bda_state(u16 seg, struct saveBDAstate *info)
-{
- SET_BDA(video_mode, GET_FARVAR(seg, info->video_mode));
- SET_BDA(video_cols, GET_FARVAR(seg, info->video_cols));
- SET_BDA(video_pagesize, GET_FARVAR(seg, info->video_pagesize));
- SET_BDA(crtc_address, GET_FARVAR(seg, info->crtc_address));
- SET_BDA(video_rows, GET_FARVAR(seg, info->video_rows));
- SET_BDA(char_height, GET_FARVAR(seg, info->char_height));
- SET_BDA(video_ctl, GET_FARVAR(seg, info->video_ctl));
- SET_BDA(video_switches, GET_FARVAR(seg, info->video_switches));
- SET_BDA(modeset_ctl, GET_FARVAR(seg, info->modeset_ctl));
- SET_BDA(cursor_type, GET_FARVAR(seg, info->cursor_type));
- u16 i;
- for (i = 0; i < 8; i++)
- SET_BDA(cursor_pos[i], GET_FARVAR(seg, info->cursor_pos[i]));
- SET_BDA(video_pagestart, GET_FARVAR(seg, info->video_pagestart));
- SET_BDA(video_page, GET_FARVAR(seg, info->video_page));
- /* current font */
- SET_IVT(0x1f, GET_FARVAR(seg, info->font0));
- SET_IVT(0x43, GET_FARVAR(seg, info->font1));
-}
-
-
-/****************************************************************
- * VGA int 10 handler
- ****************************************************************/
-
-// set video mode
-void
-vga_set_mode(u8 mode, u8 noclearmem)
-{
- // find the entry in the video modes
- struct vgamode_s *vmode_g = find_vga_entry(mode);
- dprintf(1, "mode search %02x found %p\n", mode, vmode_g);
- if (!vmode_g)
- return;
-
- // Read the bios mode set control
- u8 modeset_ctl = GET_BDA(modeset_ctl);
-
- // Then we know the number of lines
-// FIXME
-
- // if palette loading (bit 3 of modeset ctl = 0)
- if ((modeset_ctl & 0x08) == 0) { // Set the PEL mask
- vgahw_set_pel_mask(GET_GLOBAL(vmode_g->pelmask));
-
- // From which palette
- u8 *palette_g = GET_GLOBAL(vmode_g->dac);
- u16 palsize = GET_GLOBAL(vmode_g->dacsize) / 3;
-
- // Always 256*3 values
- vgahw_set_dac_regs(get_global_seg(), palette_g, 0, palsize);
- u16 i;
- for (i = palsize; i < 0x0100; i++) {
- static u8 rgb[3] VAR16;
- vgahw_set_dac_regs(get_global_seg(), rgb, i, 1);
- }
-
- if ((modeset_ctl & 0x02) == 0x02)
- perform_gray_scale_summing(0x00, 0x100);
- }
-
- vgahw_set_mode(vmode_g);
-
- if (noclearmem == 0x00)
- clear_screen(vmode_g);
-
- // Set CRTC address VGA or MDA
- u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS;
- if (GET_GLOBAL(vmode_g->memmodel) == MTEXT)
- crtc_addr = VGAREG_MDA_CRTC_ADDRESS;
-
- // Set the BIOS mem
- u16 cheight = GET_GLOBAL(vmode_g->cheight);
- SET_BDA(video_mode, mode);
- SET_BDA(video_cols, GET_GLOBAL(vmode_g->twidth));
- SET_BDA(video_pagesize, GET_GLOBAL(vmode_g->slength));
- SET_BDA(crtc_address, crtc_addr);
- SET_BDA(video_rows, GET_GLOBAL(vmode_g->theight)-1);
- SET_BDA(char_height, cheight);
- SET_BDA(video_ctl, (0x60 | noclearmem));
- SET_BDA(video_switches, 0xF9);
- SET_BDA(modeset_ctl, GET_BDA(modeset_ctl) & 0x7f);
-
- // FIXME We nearly have the good tables. to be reworked
- SET_BDA(dcc_index, 0x08); // 8 is VGA should be ok for now
- SET_BDA(video_savetable
- , SEGOFF(get_global_seg(), (u32)&video_save_pointer_table));
-
- // FIXME
- SET_BDA(video_msr, 0x00); // Unavailable on vanilla vga, but...
- SET_BDA(video_pal, 0x00); // Unavailable on vanilla vga, but...
-
- // Set cursor shape
- if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
- set_cursor_shape(0x06, 0x07);
- // Set cursor pos for page 0..7
- int i;
- for (i = 0; i < 8; i++) {
- struct cursorpos cp = {0, 0, i};
- set_cursor_pos(cp);
- }
-
- // Set active page 0
- set_active_page(0x00);
-
- // Write the fonts in memory
- if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
- call16_vgaint(0x1104, 0);
- call16_vgaint(0x1103, 0);
- }
- // Set the ints 0x1F and 0x43
- SET_IVT(0x1f, SEGOFF(get_global_seg(), (u32)&vgafont8[128 * 8]));
-
- switch (cheight) {
- case 8:
- SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont8));
- break;
- case 14:
- SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont14));
- break;
- case 16:
- SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont16));
- break;
- }
-}
-
-static void
-handle_1000(struct bregs *regs)
-{
- u8 noclearmem = regs->al & 0x80;
- u8 mode = regs->al & 0x7f;
-
- // Set regs->al
- if (mode > 7)
- regs->al = 0x20;
- else if (mode == 6)
- regs->al = 0x3f;
- else
- regs->al = 0x30;
-
- if (CONFIG_VGA_CIRRUS) {
- int ret = cirrus_set_video_mode(mode, noclearmem);
- if (ret)
- return;
- }
-
- if (bochsvga_enabled())
- bochsvga_hires_enable(0);
-
- vga_set_mode(mode, noclearmem);
-}
-
-static void
-handle_1001(struct bregs *regs)
-{
- set_cursor_shape(regs->ch, regs->cl);
-}
-
-static void
-handle_1002(struct bregs *regs)
-{
- struct cursorpos cp = {regs->dl, regs->dh, regs->bh};
- set_cursor_pos(cp);
-}
-
-static void
-handle_1003(struct bregs *regs)
-{
- regs->cx = get_cursor_shape(regs->bh);
- struct cursorpos cp = get_cursor_pos(regs->bh);
- regs->dl = cp.x;
- regs->dh = cp.y;
-}
-
-// Read light pen pos (unimplemented)
-static void
-handle_1004(struct bregs *regs)
-{
- debug_stub(regs);
- regs->ax = regs->bx = regs->cx = regs->dx = 0;
-}
-
-static void
-handle_1005(struct bregs *regs)
-{
- set_active_page(regs->al);
-}
-
-static void
-verify_scroll(struct bregs *regs, int dir)
-{
- u8 page = GET_BDA(video_page);
- struct cursorpos ul = {regs->cl, regs->ch, page};
- struct cursorpos lr = {regs->dl, regs->dh, page};
-
- u16 nbrows = GET_BDA(video_rows) + 1;
- if (lr.y >= nbrows)
- lr.y = nbrows - 1;
- u16 nbcols = GET_BDA(video_cols);
- if (lr.x >= nbcols)
- lr.x = nbcols - 1;
-
- if (ul.x > lr.x || ul.y > lr.y)
- return;
-
- u16 nblines = regs->al;
- if (!nblines || nblines > lr.y - ul.y + 1)
- nblines = lr.y - ul.y + 1;
-
- vgafb_scroll(dir * nblines, regs->bh, ul, lr);
-}
-
-static void
-handle_1006(struct bregs *regs)
-{
- verify_scroll(regs, 1);
-}
-
-static void
-handle_1007(struct bregs *regs)
-{
- verify_scroll(regs, -1);
-}
-
-static void
-handle_1008(struct bregs *regs)
-{
- struct carattr ca = vgafb_read_char(get_cursor_pos(regs->bh));
- regs->al = ca.car;
- regs->ah = ca.attr;
-}
-
-static void noinline
-write_chars(u8 page, struct carattr ca, u16 count)
-{
- struct cursorpos cp = get_cursor_pos(page);
- while (count--) {
- vgafb_write_char(cp, ca);
- cp.x++;
- }
-}
-
-static void
-handle_1009(struct bregs *regs)
-{
- struct carattr ca = {regs->al, regs->bl, 1};
- write_chars(regs->bh, ca, regs->cx);
-}
-
-static void
-handle_100a(struct bregs *regs)
-{
- struct carattr ca = {regs->al, regs->bl, 0};
- write_chars(regs->bh, ca, regs->cx);
-}
-
-
-static void
-handle_100b00(struct bregs *regs)
-{
- vgahw_set_border_color(regs->bl);
-}
-
-static void
-handle_100b01(struct bregs *regs)
-{
- vgahw_set_palette(regs->bl);
-}
-
-static void
-handle_100bXX(struct bregs *regs)
-{
- debug_stub(regs);
-}
-
-static void
-handle_100b(struct bregs *regs)
-{
- switch (regs->bh) {
- case 0x00: handle_100b00(regs); break;
- case 0x01: handle_100b01(regs); break;
- default: handle_100bXX(regs); break;
- }
-}
-
-
-static void
-handle_100c(struct bregs *regs)
-{
- // XXX - page (regs->bh) is unused
- vgafb_write_pixel(regs->al, regs->cx, regs->dx);
-}
-
-static void
-handle_100d(struct bregs *regs)
-{
- // XXX - page (regs->bh) is unused
- regs->al = vgafb_read_pixel(regs->cx, regs->dx);
-}
-
-static void noinline
-handle_100e(struct bregs *regs)
-{
- // Ralf Brown Interrupt list is WRONG on bh(page)
- // We do output only on the current page !
- struct carattr ca = {regs->al, regs->bl, 0};
- struct cursorpos cp = get_cursor_pos(0xff);
- write_teletype(&cp, ca);
- set_cursor_pos(cp);
-}
-
-static void
-handle_100f(struct bregs *regs)
-{
- regs->bh = GET_BDA(video_page);
- regs->al = GET_BDA(video_mode) | (GET_BDA(video_ctl) & 0x80);
- regs->ah = GET_BDA(video_cols);
-}
-
-
-static void
-handle_101000(struct bregs *regs)
-{
- if (regs->bl > 0x14)
- return;
- vgahw_set_single_palette_reg(regs->bl, regs->bh);
-}
-
-static void
-handle_101001(struct bregs *regs)
-{
- vgahw_set_overscan_border_color(regs->bh);
-}
-
-static void
-handle_101002(struct bregs *regs)
-{
- vgahw_set_all_palette_reg(regs->es, (u8*)(regs->dx + 0));
-}
-
-static void
-handle_101003(struct bregs *regs)
-{
- vgahw_toggle_intensity(regs->bl);
-}
-
-static void
-handle_101007(struct bregs *regs)
-{
- if (regs->bl > 0x14)
- return;
- regs->bh = vgahw_get_single_palette_reg(regs->bl);
-}
-
-static void
-handle_101008(struct bregs *regs)
-{
- regs->bh = vgahw_get_overscan_border_color();
-}
-
-static void
-handle_101009(struct bregs *regs)
-{
- vgahw_get_all_palette_reg(regs->es, (u8*)(regs->dx + 0));
-}
-
-static void noinline
-handle_101010(struct bregs *regs)
-{
- u8 rgb[3] = {regs->dh, regs->ch, regs->cl};
- vgahw_set_dac_regs(GET_SEG(SS), rgb, regs->bx, 1);
-}
-
-static void
-handle_101012(struct bregs *regs)
-{
- vgahw_set_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx);
-}
-
-static void
-handle_101013(struct bregs *regs)
-{
- vgahw_select_video_dac_color_page(regs->bl, regs->bh);
-}
-
-static void noinline
-handle_101015(struct bregs *regs)
-{
- u8 rgb[3];
- vgahw_get_dac_regs(GET_SEG(SS), rgb, regs->bx, 1);
- regs->dh = rgb[0];
- regs->ch = rgb[1];
- regs->cl = rgb[2];
-}
-
-static void
-handle_101017(struct bregs *regs)
-{
- vgahw_get_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx);
-}
-
-static void
-handle_101018(struct bregs *regs)
-{
- vgahw_set_pel_mask(regs->bl);
-}
-
-static void
-handle_101019(struct bregs *regs)
-{
- regs->bl = vgahw_get_pel_mask();
-}
-
-static void
-handle_10101a(struct bregs *regs)
-{
- vgahw_read_video_dac_state(®s->bl, ®s->bh);
-}
-
-static void
-handle_10101b(struct bregs *regs)
-{
- perform_gray_scale_summing(regs->bx, regs->cx);
-}
-
-static void
-handle_1010XX(struct bregs *regs)
-{
- debug_stub(regs);
-}
-
-static void
-handle_1010(struct bregs *regs)
-{
- switch (regs->al) {
- case 0x00: handle_101000(regs); break;
- case 0x01: handle_101001(regs); break;
- case 0x02: handle_101002(regs); break;
- case 0x03: handle_101003(regs); break;
- case 0x07: handle_101007(regs); break;
- case 0x08: handle_101008(regs); break;
- case 0x09: handle_101009(regs); break;
- case 0x10: handle_101010(regs); break;
- case 0x12: handle_101012(regs); break;
- case 0x13: handle_101013(regs); break;
- case 0x15: handle_101015(regs); break;
- case 0x17: handle_101017(regs); break;
- case 0x18: handle_101018(regs); break;
- case 0x19: handle_101019(regs); break;
- case 0x1a: handle_10101a(regs); break;
- case 0x1b: handle_10101b(regs); break;
- default: handle_1010XX(regs); break;
- }
-}
-
-
-static void
-handle_101100(struct bregs *regs)
-{
- vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx
- , regs->dx, regs->bl, regs->bh);
-}
-
-static void
-handle_101101(struct bregs *regs)
-{
- vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14);
-}
-
-static void
-handle_101102(struct bregs *regs)
-{
- vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8);
-}
-
-static void
-handle_101103(struct bregs *regs)
-{
- vgahw_set_text_block_specifier(regs->bl);
-}
-
-static void
-handle_101104(struct bregs *regs)
-{
- vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16);
-}
-
-static void
-handle_101110(struct bregs *regs)
-{
- vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx
- , regs->dx, regs->bl, regs->bh);
- set_scan_lines(regs->bh);
-}
-
-static void
-handle_101111(struct bregs *regs)
-{
- vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14);
- set_scan_lines(14);
-}
-
-static void
-handle_101112(struct bregs *regs)
-{
- vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8);
- set_scan_lines(8);
-}
-
-static void
-handle_101114(struct bregs *regs)
-{
- vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16);
- set_scan_lines(16);
-}
-
-static void
-handle_101130(struct bregs *regs)
-{
- switch (regs->bh) {
- case 0x00: {
- struct segoff_s so = GET_IVT(0x1f);
- regs->es = so.seg;
- regs->bp = so.offset;
- break;
- }
- case 0x01: {
- struct segoff_s so = GET_IVT(0x43);
- regs->es = so.seg;
- regs->bp = so.offset;
- break;
- }
- case 0x02:
- regs->es = get_global_seg();
- regs->bp = (u32)vgafont14;
- break;
- case 0x03:
- regs->es = get_global_seg();
- regs->bp = (u32)vgafont8;
- break;
- case 0x04:
- regs->es = get_global_seg();
- regs->bp = (u32)vgafont8 + 128 * 8;
- break;
- case 0x05:
- regs->es = get_global_seg();
- regs->bp = (u32)vgafont14alt;
- break;
- case 0x06:
- regs->es = get_global_seg();
- regs->bp = (u32)vgafont16;
- break;
- case 0x07:
- regs->es = get_global_seg();
- regs->bp = (u32)vgafont16alt;
- break;
- default:
- dprintf(1, "Get font info BH(%02x) was discarded\n", regs->bh);
- return;
- }
- // Set byte/char of on screen font
- regs->cx = GET_BDA(char_height) & 0xff;
-
- // Set Highest char row
- regs->dx = GET_BDA(video_rows);
-}
-
-static void
-handle_1011XX(struct bregs *regs)
-{
- debug_stub(regs);
-}
-
-static void
-handle_1011(struct bregs *regs)
-{
- switch (regs->al) {
- case 0x00: handle_101100(regs); break;
- case 0x01: handle_101101(regs); break;
- case 0x02: handle_101102(regs); break;
- case 0x03: handle_101103(regs); break;
- case 0x04: handle_101104(regs); break;
- case 0x10: handle_101110(regs); break;
- case 0x11: handle_101111(regs); break;
- case 0x12: handle_101112(regs); break;
- case 0x14: handle_101114(regs); break;
- case 0x30: handle_101130(regs); break;
- default: handle_1011XX(regs); break;
- }
-}
-
-
-static void
-handle_101210(struct bregs *regs)
-{
- u16 crtc_addr = GET_BDA(crtc_address);
- if (crtc_addr == VGAREG_MDA_CRTC_ADDRESS)
- regs->bx = 0x0103;
- else
- regs->bx = 0x0003;
- regs->cx = GET_BDA(video_switches) & 0x0f;
-}
-
-static void
-handle_101230(struct bregs *regs)
-{
- u8 mctl = GET_BDA(modeset_ctl);
- u8 vswt = GET_BDA(video_switches);
- switch (regs->al) {
- case 0x00:
- // 200 lines
- mctl = (mctl & ~0x10) | 0x80;
- vswt = (vswt & ~0x0f) | 0x08;
- break;
- case 0x01:
- // 350 lines
- mctl &= ~0x90;
- vswt = (vswt & ~0x0f) | 0x09;
- break;
- case 0x02:
- // 400 lines
- mctl = (mctl & ~0x80) | 0x10;
- vswt = (vswt & ~0x0f) | 0x09;
- break;
- default:
- dprintf(1, "Select vert res (%02x) was discarded\n", regs->al);
- break;
- }
- SET_BDA(modeset_ctl, mctl);
- SET_BDA(video_switches, vswt);
- regs->al = 0x12;
-}
-
-static void
-handle_101231(struct bregs *regs)
-{
- u8 v = (regs->al & 0x01) << 3;
- u8 mctl = GET_BDA(video_ctl) & ~0x08;
- SET_BDA(video_ctl, mctl | v);
- regs->al = 0x12;
-}
-
-static void
-handle_101232(struct bregs *regs)
-{
- vgahw_enable_video_addressing(regs->al);
- regs->al = 0x12;
-}
-
-static void
-handle_101233(struct bregs *regs)
-{
- u8 v = ((regs->al << 1) & 0x02) ^ 0x02;
- u8 v2 = GET_BDA(modeset_ctl) & ~0x02;
- SET_BDA(modeset_ctl, v | v2);
- regs->al = 0x12;
-}
-
-static void
-handle_101234(struct bregs *regs)
-{
- u8 v = (regs->al & 0x01) ^ 0x01;
- u8 v2 = GET_BDA(modeset_ctl) & ~0x01;
- SET_BDA(modeset_ctl, v | v2);
- regs->al = 0x12;
-}
-
-static void
-handle_101235(struct bregs *regs)
-{
- debug_stub(regs);
- regs->al = 0x12;
-}
-
-static void
-handle_101236(struct bregs *regs)
-{
- debug_stub(regs);
- regs->al = 0x12;
-}
-
-static void
-handle_1012XX(struct bregs *regs)
-{
- debug_stub(regs);
-}
-
-static void
-handle_1012(struct bregs *regs)
-{
- switch (regs->bl) {
- case 0x10: handle_101210(regs); break;
- case 0x30: handle_101230(regs); break;
- case 0x31: handle_101231(regs); break;
- case 0x32: handle_101232(regs); break;
- case 0x33: handle_101233(regs); break;
- case 0x34: handle_101234(regs); break;
- case 0x35: handle_101235(regs); break;
- case 0x36: handle_101236(regs); break;
- default: handle_1012XX(regs); break;
- }
-
- // XXX - cirrus has 1280, 1281, 1282, 1285, 129a, 12a0, 12a1, 12a2, 12ae
-}
-
-
-// Write string
-static void noinline
-handle_1013(struct bregs *regs)
-{
- struct cursorpos cp = {regs->dl, regs->dh, regs->bh};
- // if row=0xff special case : use current cursor position
- if (cp.y == 0xff)
- cp = get_cursor_pos(cp.page);
- u8 flag = regs->al;
- if (flag & 2)
- write_attr_string(&cp, regs->cx, regs->es, (void*)(regs->bp + 0));
- else
- write_string(&cp, regs->bl, regs->cx, regs->es, (void*)(regs->bp + 0));
-
- if (flag & 1)
- set_cursor_pos(cp);
-}
-
-
-static void
-handle_101a00(struct bregs *regs)
-{
- regs->bx = GET_BDA(dcc_index);
- regs->al = 0x1a;
-}
-
-static void
-handle_101a01(struct bregs *regs)
-{
- SET_BDA(dcc_index, regs->bl);
- dprintf(1, "Alternate Display code (%02x) was discarded\n", regs->bh);
- regs->al = 0x1a;
-}
-
-static void
-handle_101aXX(struct bregs *regs)
-{
- debug_stub(regs);
-}
-
-static void
-handle_101a(struct bregs *regs)
-{
- switch (regs->al) {
- case 0x00: handle_101a00(regs); break;
- case 0x01: handle_101a01(regs); break;
- default: handle_101aXX(regs); break;
- }
-}
-
-
-struct funcInfo {
- struct segoff_s static_functionality;
- u8 bda_0x49[30];
- u8 bda_0x84[3];
- u8 dcc_index;
- u8 dcc_alt;
- u16 colors;
- u8 pages;
- u8 scan_lines;
- u8 primary_char;
- u8 secondar_char;
- u8 misc;
- u8 non_vga_mode;
- u8 reserved_2f[2];
- u8 video_mem;
- u8 save_flags;
- u8 disp_info;
- u8 reserved_34[12];
-};
-
-static void
-handle_101b(struct bregs *regs)
-{
- u16 seg = regs->es;
- struct funcInfo *info = (void*)(regs->di+0);
- memset_far(seg, info, 0, sizeof(*info));
- // Address of static functionality table
- SET_FARVAR(seg, info->static_functionality
- , SEGOFF(get_global_seg(), (u32)static_functionality));
-
- // Hard coded copy from BIOS area. Should it be cleaner ?
- memcpy_far(seg, info->bda_0x49, SEG_BDA, (void*)0x49
- , sizeof(info->bda_0x49));
- memcpy_far(seg, info->bda_0x84, SEG_BDA, (void*)0x84
- , sizeof(info->bda_0x84));
-
- SET_FARVAR(seg, info->dcc_index, GET_BDA(dcc_index));
- SET_FARVAR(seg, info->colors, 16);
- SET_FARVAR(seg, info->pages, 8);
- SET_FARVAR(seg, info->scan_lines, 2);
- SET_FARVAR(seg, info->video_mem, 3);
- regs->al = 0x1B;
-}
-
-
-static void
-handle_101c00(struct bregs *regs)
-{
- u16 flags = regs->cx;
- u16 size = 0;
- if (flags & 1)
- size += sizeof(struct saveVideoHardware);
- if (flags & 2)
- size += sizeof(struct saveBDAstate);
- if (flags & 4)
- size += sizeof(struct saveDACcolors);
- regs->bx = size;
- regs->al = 0x1c;
-}
-
-static void
-handle_101c01(struct bregs *regs)
-{
- u16 flags = regs->cx;
- u16 seg = regs->es;
- void *data = (void*)(regs->bx+0);
- if (flags & 1) {
- vgahw_save_state(seg, data);
- data += sizeof(struct saveVideoHardware);
- }
- if (flags & 2) {
- save_bda_state(seg, data);
- data += sizeof(struct saveBDAstate);
- }
- if (flags & 4)
- vgahw_save_dac_state(seg, data);
- regs->al = 0x1c;
-}
-
-static void
-handle_101c02(struct bregs *regs)
-{
- u16 flags = regs->cx;
- u16 seg = regs->es;
- void *data = (void*)(regs->bx+0);
- if (flags & 1) {
- vgahw_restore_state(seg, data);
- data += sizeof(struct saveVideoHardware);
- }
- if (flags & 2) {
- restore_bda_state(seg, data);
- data += sizeof(struct saveBDAstate);
- }
- if (flags & 4)
- vgahw_restore_dac_state(seg, data);
- regs->al = 0x1c;
-}
-
-static void
-handle_101cXX(struct bregs *regs)
-{
- debug_stub(regs);
-}
-
-static void
-handle_101c(struct bregs *regs)
-{
- switch (regs->al) {
- case 0x00: handle_101c00(regs); break;
- case 0x01: handle_101c01(regs); break;
- case 0x02: handle_101c02(regs); break;
- default: handle_101cXX(regs); break;
- }
-}
-
-static void
-handle_104f00(struct bregs *regs)
-{
- u16 seg = regs->es;
- struct vbe_info *info = (void*)(regs->di+0);
-
- if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) {
- dprintf(4, "Get VBE Controller: VBE2 Signature found\n");
- } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) {
- dprintf(4, "Get VBE Controller: VESA Signature found\n");
- } else {
- dprintf(4, "Get VBE Controller: Invalid Signature\n");
- }
-
- memset_far(seg, info, 0, sizeof(*info));
-
- SET_FARVAR(seg, info->signature, VESA_SIGNATURE);
-
- SET_FARVAR(seg, info->version, 0x0200);
-
- SET_FARVAR(seg, info->oem_string,
- SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING));
- SET_FARVAR(seg, info->capabilities, 0x1); /* 8BIT DAC */
-
- /* We generate our mode list in the reserved field of the info block */
- SET_FARVAR(seg, info->video_mode, SEGOFF(seg, regs->di + 34));
-
- /* Total memory (in 64 blocks) */
- SET_FARVAR(seg, info->total_memory, bochsvga_total_mem());
-
- SET_FARVAR(seg, info->oem_vendor_string,
- SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING));
- SET_FARVAR(seg, info->oem_product_string,
- SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING));
- SET_FARVAR(seg, info->oem_revision_string,
- SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING));
-
- /* Fill list of modes */
- bochsvga_list_modes(seg, regs->di + 32);
-
- regs->al = regs->ah; /* 0x4F, Function supported */
- regs->ah = 0x0; /* 0x0, Function call successful */
-}
-
-static void
-handle_104f01(struct bregs *regs)
-{
- u16 seg = regs->es;
- struct vbe_mode_info *info = (void*)(regs->di+0);
- u16 mode = regs->cx;
- struct vbe_modeinfo modeinfo;
- int rc;
-
- dprintf(1, "VBE mode info request: %x\n", mode);
-
- rc = bochsvga_mode_info(mode, &modeinfo);
- if (rc) {
- dprintf(1, "VBE mode %x not found\n", mode);
- regs->ax = 0x100;
- return;
- }
-
- u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED |
- VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE |
- VBE_MODE_ATTRIBUTE_COLOR_MODE |
- VBE_MODE_ATTRIBUTE_GRAPHICS_MODE;
- if (modeinfo.depth == 4)
- mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT;
- else
- mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE;
- SET_FARVAR(seg, info->mode_attributes, mode_attr);
- SET_FARVAR(seg, info->winA_attributes,
- VBE_WINDOW_ATTRIBUTE_RELOCATABLE |
- VBE_WINDOW_ATTRIBUTE_READABLE |
- VBE_WINDOW_ATTRIBUTE_WRITEABLE);
- SET_FARVAR(seg, info->winB_attributes, 0);
- SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */
- SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */
- SET_FARVAR(seg, info->winA_seg, 0xA000);
- SET_FARVAR(seg, info->winB_seg, 0x0);
- SET_FARVAR(seg, info->win_func_ptr.segoff, 0x0);
- SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize);
- SET_FARVAR(seg, info->xres, modeinfo.width);
- SET_FARVAR(seg, info->yres, modeinfo.height);
- SET_FARVAR(seg, info->xcharsize, 8);
- SET_FARVAR(seg, info->ycharsize, 16);
- if (modeinfo.depth == 4)
- SET_FARVAR(seg, info->planes, 4);
- else
- SET_FARVAR(seg, info->planes, 1);
- SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth);
- SET_FARVAR(seg, info->banks,
- (modeinfo.linesize * modeinfo.height + 65535) / 65536);
- if (modeinfo.depth == 4)
- SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR);
- else if (modeinfo.depth == 8)
- SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL);
- else
- SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR);
- SET_FARVAR(seg, info->bank_size, 0);
- u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize);
- if (modeinfo.depth == 4)
- SET_FARVAR(seg, info->pages, (pages / 4) - 1);
- else
- SET_FARVAR(seg, info->pages, pages - 1);
- SET_FARVAR(seg, info->reserved0, 1);
-
- u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
-
- switch (modeinfo.depth) {
- case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
- b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
- case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
- b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
- case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
- b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
- case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
- b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
- default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
- b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
- }
-
- SET_FARVAR(seg, info->red_size, r_size);
- SET_FARVAR(seg, info->red_pos, r_pos);
- SET_FARVAR(seg, info->green_size, g_size);
- SET_FARVAR(seg, info->green_pos, g_pos);
- SET_FARVAR(seg, info->blue_size, b_size);
- SET_FARVAR(seg, info->blue_pos, b_pos);
- SET_FARVAR(seg, info->alpha_size, a_size);
- SET_FARVAR(seg, info->alpha_pos, a_pos);
-
- if (modeinfo.depth == 32)
- SET_FARVAR(seg, info->directcolor_info,
- VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
- else
- SET_FARVAR(seg, info->directcolor_info, 0);
-
- if (modeinfo.depth > 4)
- SET_FARVAR(seg, info->phys_base, modeinfo.phys_base);
- else
- SET_FARVAR(seg, info->phys_base, 0);
-
- SET_FARVAR(seg, info->reserved1, 0);
- SET_FARVAR(seg, info->reserved2, 0);
- SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize);
- SET_FARVAR(seg, info->bank_pages, 0);
- SET_FARVAR(seg, info->linear_pages, 0);
- SET_FARVAR(seg, info->linear_red_size, r_size);
- SET_FARVAR(seg, info->linear_red_pos, r_pos);
- SET_FARVAR(seg, info->linear_green_size, g_size);
- SET_FARVAR(seg, info->linear_green_pos, g_pos);
- SET_FARVAR(seg, info->linear_blue_size, b_size);
- SET_FARVAR(seg, info->linear_blue_pos, b_pos);
- SET_FARVAR(seg, info->linear_alpha_size, a_size);
- SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
- SET_FARVAR(seg, info->pixclock_max, 0);
-
- regs->al = regs->ah; /* 0x4F, Function supported */
- regs->ah = 0x0; /* 0x0, Function call successful */
-}
-
-static void
-handle_104f02(struct bregs *regs)
-{
- //u16 seg = regs->es;
- //struct vbe_crtc_info *crtc_info = (void*)(regs->di+0);
- u16 mode = regs->bx;
- struct vbe_modeinfo modeinfo;
- int rc;
-
- dprintf(1, "VBE mode set: %x\n", mode);
-
- if (mode < 0x100) { /* VGA */
- dprintf(1, "set VGA mode %x\n", mode);
-
- bochsvga_hires_enable(0);
- vga_set_mode(mode, 0);
- } else { /* VBE */
- rc = bochsvga_mode_info(mode & 0x1ff, &modeinfo);
- if (rc) {
- dprintf(1, "VBE mode %x not found\n", mode & 0x1ff);
- regs->ax = 0x100;
- return;
- }
- bochsvga_hires_enable(1);
- bochsvga_set_mode(mode & 0x1ff, &modeinfo);
-
- if (mode & 0x4000) {
- /* Linear frame buffer */
- /* XXX: ??? */
- }
- if (!(mode & 0x8000)) {
- bochsvga_clear_scr();
- }
- }
-
- regs->al = regs->ah; /* 0x4F, Function supported */
- regs->ah = 0x0; /* 0x0, Function call successful */
-}
-
-static void
-handle_104f03(struct bregs *regs)
-{
- if (!bochsvga_hires_enabled()) {
- regs->bx = GET_BDA(video_mode);
- } else {
- regs->bx = bochsvga_curr_mode();
- }
-
- dprintf(1, "VBE current mode=%x\n", regs->bx);
-
- regs->al = regs->ah; /* 0x4F, Function supported */
- regs->ah = 0x0; /* 0x0, Function call successful */
-}
-
-static void
-handle_104f04(struct bregs *regs)
-{
- debug_enter(regs, DEBUG_VGA_10);
- regs->ax = 0x0100;
-}
-
-static void
-handle_104f05(struct bregs *regs)
-{
- debug_enter(regs, DEBUG_VGA_10);
- regs->ax = 0x0100;
-}
-
-static void
-handle_104f06(struct bregs *regs)
-{
- debug_enter(regs, DEBUG_VGA_10);
- regs->ax = 0x0100;
-}
-
-static void
-handle_104f07(struct bregs *regs)
-{
- debug_enter(regs, DEBUG_VGA_10);
- regs->ax = 0x0100;
-}
-
-static void
-handle_104f08(struct bregs *regs)
-{
- debug_enter(regs, DEBUG_VGA_10);
- regs->ax = 0x0100;
-}
-
-static void
-handle_104f0a(struct bregs *regs)
-{
- debug_enter(regs, DEBUG_VGA_10);
- regs->ax = 0x0100;
-}
-
-static void
-handle_104fXX(struct bregs *regs)
-{
- debug_stub(regs);
- regs->ax = 0x0100;
-}
-
-static void
-handle_104f(struct bregs *regs)
-{
- if (!bochsvga_enabled()) {
- handle_104fXX(regs);
- return;
- }
-
- switch (regs->al) {
- case 0x00: handle_104f00(regs); break;
- case 0x01: handle_104f01(regs); break;
- case 0x02: handle_104f02(regs); break;
- case 0x03: handle_104f03(regs); break;
- case 0x04: handle_104f04(regs); break;
- case 0x05: handle_104f05(regs); break;
- case 0x06: handle_104f06(regs); break;
- case 0x07: handle_104f07(regs); break;
- case 0x08: handle_104f08(regs); break;
- case 0x0a: handle_104f0a(regs); break;
- default: handle_104fXX(regs); break;
- }
-}
-
-
-static void
-handle_10XX(struct bregs *regs)
-{
- debug_stub(regs);
-}
-
-// INT 10h Video Support Service Entry Point
-void VISIBLE16
-handle_10(struct bregs *regs)
-{
- debug_enter(regs, DEBUG_VGA_10);
- switch (regs->ah) {
- case 0x00: handle_1000(regs); break;
- case 0x01: handle_1001(regs); break;
- case 0x02: handle_1002(regs); break;
- case 0x03: handle_1003(regs); break;
- case 0x04: handle_1004(regs); break;
- case 0x05: handle_1005(regs); break;
- case 0x06: handle_1006(regs); break;
- case 0x07: handle_1007(regs); break;
- case 0x08: handle_1008(regs); break;
- case 0x09: handle_1009(regs); break;
- case 0x0a: handle_100a(regs); break;
- case 0x0b: handle_100b(regs); break;
- case 0x0c: handle_100c(regs); break;
- case 0x0d: handle_100d(regs); break;
- case 0x0e: handle_100e(regs); break;
- case 0x0f: handle_100f(regs); break;
- case 0x10: handle_1010(regs); break;
- case 0x11: handle_1011(regs); break;
- case 0x12: handle_1012(regs); break;
- case 0x13: handle_1013(regs); break;
- case 0x1a: handle_101a(regs); break;
- case 0x1b: handle_101b(regs); break;
- case 0x1c: handle_101c(regs); break;
- case 0x4f: handle_104f(regs); break;
- default: handle_10XX(regs); break;
- }
-}
-
-
-/****************************************************************
- * VGA post
- ****************************************************************/
-
-static void
-init_bios_area(void)
-{
- // init detected hardware BIOS Area
- // set 80x25 color (not clear from RBIL but usual)
- u16 eqf = GET_BDA(equipment_list_flags);
- SET_BDA(equipment_list_flags, (eqf & 0xffcf) | 0x20);
-
- // Just for the first int10 find its children
-
- // the default char height
- SET_BDA(char_height, 0x10);
-
- // Clear the screen
- SET_BDA(video_ctl, 0x60);
-
- // Set the basic screen we have
- SET_BDA(video_switches, 0xf9);
-
- // Set the basic modeset options
- SET_BDA(modeset_ctl, 0x51);
-
- // Set the default MSR
- SET_BDA(video_msr, 0x09);
-}
-
-void VISIBLE16
-vga_post(struct bregs *regs)
-{
- debug_enter(regs, DEBUG_VGA_POST);
-
- vgahw_init();
-
- if (CONFIG_VGA_GEODELX)
- geodelx_init();
-
- init_bios_area();
-
- bochsvga_init(regs->ah, regs->al);
-
- extern void entry_10(void);
- SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10));
-
- if (CONFIG_VGA_CIRRUS)
- cirrus_init();
-
- // XXX - clear screen and display info
-
- build_video_param();
-
- // Fixup checksum
- extern u8 _rom_header_size, _rom_header_checksum;
- SET_VGA(_rom_header_checksum, 0);
- u8 sum = -checksum_far(get_global_seg(), 0, _rom_header_size * 512);
- SET_VGA(_rom_header_checksum, sum);
-}
diff --git a/vgasrc/vgabios.c b/vgasrc/vgabios.c
new file mode 100644
index 0000000..2ff677e
--- /dev/null
+++ b/vgasrc/vgabios.c
@@ -0,0 +1,1596 @@
+// VGA bios implementation
+//
+// Copyright (C) 2009 Kevin O'Connor <kevin at koconnor.net>
+// Copyright (C) 2001-2008 the LGPL VGABios developers Team
+//
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+
+
+// TODO:
+// * review correctness of converted asm by comparing with RBIL
+//
+// * convert vbe/clext code
+
+#include "bregs.h" // struct bregs
+#include "biosvar.h" // GET_BDA
+#include "util.h" // memset
+#include "vgabios.h" // find_vga_entry
+#include "optionroms.h" // struct pci_data
+#include "config.h" // CONFIG_*
+#include "vbe.h" // struct vbe_info
+#include "geodelx.h" // geodelx_init
+#include "bochsvga.h" // bochsvga_init
+
+// XXX
+#define DEBUG_VGA_POST 1
+#define DEBUG_VGA_10 3
+
+
+/****************************************************************
+ * PCI Data
+ ****************************************************************/
+#if CONFIG_VGA_PCI == 1
+struct pci_data rom_pci_data VAR16VISIBLE = {
+ .signature = PCI_ROM_SIGNATURE,
+ .vendor = CONFIG_VGA_VID,
+ .device = CONFIG_VGA_DID,
+ .dlen = 0x18,
+ .class_hi = 0x300,
+ .irevision = 1,
+ .type = PCIROM_CODETYPE_X86,
+ .indicator = 0x80,
+};
+#endif
+
+/****************************************************************
+ * Helper functions
+ ****************************************************************/
+
+static inline void
+call16_vgaint(u32 eax, u32 ebx)
+{
+ asm volatile(
+ "int $0x10\n"
+ "cli\n"
+ "cld"
+ :
+ : "a"(eax), "b"(ebx)
+ : "cc", "memory");
+}
+
+static void
+perform_gray_scale_summing(u16 start, u16 count)
+{
+ vgahw_screen_disable();
+ int i;
+ for (i = start; i < start+count; i++) {
+ u8 rgb[3];
+ vgahw_get_dac_regs(GET_SEG(SS), rgb, i, 1);
+
+ // intensity = ( 0.3 * Red ) + ( 0.59 * Green ) + ( 0.11 * Blue )
+ u16 intensity = ((77 * rgb[0] + 151 * rgb[1] + 28 * rgb[2]) + 0x80) >> 8;
+ if (intensity > 0x3f)
+ intensity = 0x3f;
+
+ vgahw_set_dac_regs(GET_SEG(SS), rgb, i, 1);
+ }
+ vgahw_screen_enable();
+}
+
+static void
+set_cursor_shape(u8 start, u8 end)
+{
+ start &= 0x3f;
+ end &= 0x1f;
+
+ u16 curs = (start << 8) + end;
+ SET_BDA(cursor_type, curs);
+
+ u8 modeset_ctl = GET_BDA(modeset_ctl);
+ u16 cheight = GET_BDA(char_height);
+ if ((modeset_ctl & 0x01) && (cheight > 8) && (end < 8) && (start < 0x20)) {
+ if (end != (start + 1))
+ start = ((start + 1) * cheight / 8) - 1;
+ else
+ start = ((end + 1) * cheight / 8) - 2;
+ end = ((end + 1) * cheight / 8) - 1;
+ }
+ vgahw_set_cursor_shape(start, end);
+}
+
+static u16
+get_cursor_shape(u8 page)
+{
+ if (page > 7)
+ return 0;
+ // FIXME should handle VGA 14/16 lines
+ return GET_BDA(cursor_type);
+}
+
+static void
+set_cursor_pos(struct cursorpos cp)
+{
+ // Should not happen...
+ if (cp.page > 7)
+ return;
+
+ // Bios cursor pos
+ SET_BDA(cursor_pos[cp.page], (cp.y << 8) | cp.x);
+
+ // Set the hardware cursor
+ u8 current = GET_BDA(video_page);
+ if (cp.page != current)
+ return;
+
+ // Get the dimensions
+ u16 nbcols = GET_BDA(video_cols);
+ u16 nbrows = GET_BDA(video_rows) + 1;
+
+ // Calculate the address knowing nbcols nbrows and page num
+ u16 address = (SCREEN_IO_START(nbcols, nbrows, cp.page)
+ + cp.x + cp.y * nbcols);
+
+ vgahw_set_cursor_pos(address);
+}
+
+static struct cursorpos
+get_cursor_pos(u8 page)
+{
+ if (page == 0xff)
+ // special case - use current page
+ page = GET_BDA(video_page);
+ if (page > 7) {
+ struct cursorpos cp = { 0, 0, 0xfe };
+ return cp;
+ }
+ // FIXME should handle VGA 14/16 lines
+ u16 xy = GET_BDA(cursor_pos[page]);
+ struct cursorpos cp = {xy, xy>>8, page};
+ return cp;
+}
+
+static void
+set_active_page(u8 page)
+{
+ if (page > 7)
+ return;
+
+ // Get the mode
+ struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+ if (!vmode_g)
+ return;
+
+ // Get pos curs pos for the right page
+ struct cursorpos cp = get_cursor_pos(page);
+
+ u16 address;
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
+ // Get the dimensions
+ u16 nbcols = GET_BDA(video_cols);
+ u16 nbrows = GET_BDA(video_rows) + 1;
+
+ // Calculate the address knowing nbcols nbrows and page num
+ address = SCREEN_MEM_START(nbcols, nbrows, page);
+ SET_BDA(video_pagestart, address);
+
+ // Start address
+ address = SCREEN_IO_START(nbcols, nbrows, page);
+ } else {
+ address = page * GET_GLOBAL(vmode_g->slength);
+ }
+
+ vgahw_set_active_page(address);
+
+ // And change the BIOS page
+ SET_BDA(video_page, page);
+
+ dprintf(1, "Set active page %02x address %04x\n", page, address);
+
+ // Display the cursor, now the page is active
+ set_cursor_pos(cp);
+}
+
+static void
+set_scan_lines(u8 lines)
+{
+ vgahw_set_scan_lines(lines);
+ if (lines == 8)
+ set_cursor_shape(0x06, 0x07);
+ else
+ set_cursor_shape(lines - 4, lines - 3);
+ SET_BDA(char_height, lines);
+ u16 vde = vgahw_get_vde();
+ u8 rows = vde / lines;
+ SET_BDA(video_rows, rows - 1);
+ u16 cols = GET_BDA(video_cols);
+ SET_BDA(video_pagesize, rows * cols * 2);
+}
+
+
+/****************************************************************
+ * Character writing
+ ****************************************************************/
+
+// Scroll the screen one line. This function is designed to be called
+// tail-recursive to reduce stack usage.
+static void noinline
+scroll_one(u16 nbrows, u16 nbcols, u8 page)
+{
+ struct cursorpos ul = {0, 0, page};
+ struct cursorpos lr = {nbcols-1, nbrows-1, page};
+ vgafb_scroll(1, -1, ul, lr);
+}
+
+// Write a character to the screen at a given position. Implement
+// special characters and scroll the screen if necessary.
+static void
+write_teletype(struct cursorpos *pcp, struct carattr ca)
+{
+ struct cursorpos cp = *pcp;
+
+ // Get the dimensions
+ u16 nbrows = GET_BDA(video_rows) + 1;
+ u16 nbcols = GET_BDA(video_cols);
+
+ switch (ca.car) {
+ case 7:
+ //FIXME should beep
+ break;
+ case 8:
+ if (cp.x > 0)
+ cp.x--;
+ break;
+ case '\r':
+ cp.x = 0;
+ break;
+ case '\n':
+ cp.y++;
+ break;
+ case '\t':
+ do {
+ struct carattr dummyca = {' ', ca.attr, ca.use_attr};
+ vgafb_write_char(cp, dummyca);
+ cp.x++;
+ } while (cp.x < nbcols && cp.x % 8);
+ break;
+ default:
+ vgafb_write_char(cp, ca);
+ cp.x++;
+ }
+
+ // Do we need to wrap ?
+ if (cp.x == nbcols) {
+ cp.x = 0;
+ cp.y++;
+ }
+ // Do we need to scroll ?
+ if (cp.y < nbrows) {
+ *pcp = cp;
+ return;
+ }
+ // Scroll screen
+ cp.y--;
+ *pcp = cp;
+ scroll_one(nbrows, nbcols, cp.page);
+}
+
+// Write out a buffer of alternating characters and attributes.
+static void
+write_attr_string(struct cursorpos *pcp, u16 count, u16 seg, u8 *offset_far)
+{
+ while (count--) {
+ u8 car = GET_FARVAR(seg, *offset_far);
+ offset_far++;
+ u8 attr = GET_FARVAR(seg, *offset_far);
+ offset_far++;
+
+ struct carattr ca = {car, attr, 1};
+ write_teletype(pcp, ca);
+ }
+}
+
+// Write out a buffer of characters.
+static void
+write_string(struct cursorpos *pcp, u8 attr, u16 count, u16 seg, u8 *offset_far)
+{
+ while (count--) {
+ u8 car = GET_FARVAR(seg, *offset_far);
+ offset_far++;
+
+ struct carattr ca = {car, attr, 1};
+ write_teletype(pcp, ca);
+ }
+}
+
+
+/****************************************************************
+ * Save and restore bda state
+ ****************************************************************/
+
+static void
+save_bda_state(u16 seg, struct saveBDAstate *info)
+{
+ SET_FARVAR(seg, info->video_mode, GET_BDA(video_mode));
+ SET_FARVAR(seg, info->video_cols, GET_BDA(video_cols));
+ SET_FARVAR(seg, info->video_pagesize, GET_BDA(video_pagesize));
+ SET_FARVAR(seg, info->crtc_address, GET_BDA(crtc_address));
+ SET_FARVAR(seg, info->video_rows, GET_BDA(video_rows));
+ SET_FARVAR(seg, info->char_height, GET_BDA(char_height));
+ SET_FARVAR(seg, info->video_ctl, GET_BDA(video_ctl));
+ SET_FARVAR(seg, info->video_switches, GET_BDA(video_switches));
+ SET_FARVAR(seg, info->modeset_ctl, GET_BDA(modeset_ctl));
+ SET_FARVAR(seg, info->cursor_type, GET_BDA(cursor_type));
+ u16 i;
+ for (i=0; i<8; i++)
+ SET_FARVAR(seg, info->cursor_pos[i], GET_BDA(cursor_pos[i]));
+ SET_FARVAR(seg, info->video_pagestart, GET_BDA(video_pagestart));
+ SET_FARVAR(seg, info->video_page, GET_BDA(video_page));
+ /* current font */
+ SET_FARVAR(seg, info->font0, GET_IVT(0x1f));
+ SET_FARVAR(seg, info->font1, GET_IVT(0x43));
+}
+
+static void
+restore_bda_state(u16 seg, struct saveBDAstate *info)
+{
+ SET_BDA(video_mode, GET_FARVAR(seg, info->video_mode));
+ SET_BDA(video_cols, GET_FARVAR(seg, info->video_cols));
+ SET_BDA(video_pagesize, GET_FARVAR(seg, info->video_pagesize));
+ SET_BDA(crtc_address, GET_FARVAR(seg, info->crtc_address));
+ SET_BDA(video_rows, GET_FARVAR(seg, info->video_rows));
+ SET_BDA(char_height, GET_FARVAR(seg, info->char_height));
+ SET_BDA(video_ctl, GET_FARVAR(seg, info->video_ctl));
+ SET_BDA(video_switches, GET_FARVAR(seg, info->video_switches));
+ SET_BDA(modeset_ctl, GET_FARVAR(seg, info->modeset_ctl));
+ SET_BDA(cursor_type, GET_FARVAR(seg, info->cursor_type));
+ u16 i;
+ for (i = 0; i < 8; i++)
+ SET_BDA(cursor_pos[i], GET_FARVAR(seg, info->cursor_pos[i]));
+ SET_BDA(video_pagestart, GET_FARVAR(seg, info->video_pagestart));
+ SET_BDA(video_page, GET_FARVAR(seg, info->video_page));
+ /* current font */
+ SET_IVT(0x1f, GET_FARVAR(seg, info->font0));
+ SET_IVT(0x43, GET_FARVAR(seg, info->font1));
+}
+
+
+/****************************************************************
+ * VGA int 10 handler
+ ****************************************************************/
+
+// set video mode
+void
+vga_set_mode(u8 mode, u8 noclearmem)
+{
+ // find the entry in the video modes
+ struct vgamode_s *vmode_g = find_vga_entry(mode);
+ dprintf(1, "mode search %02x found %p\n", mode, vmode_g);
+ if (!vmode_g)
+ return;
+
+ // Read the bios mode set control
+ u8 modeset_ctl = GET_BDA(modeset_ctl);
+
+ // Then we know the number of lines
+// FIXME
+
+ // if palette loading (bit 3 of modeset ctl = 0)
+ if ((modeset_ctl & 0x08) == 0) { // Set the PEL mask
+ vgahw_set_pel_mask(GET_GLOBAL(vmode_g->pelmask));
+
+ // From which palette
+ u8 *palette_g = GET_GLOBAL(vmode_g->dac);
+ u16 palsize = GET_GLOBAL(vmode_g->dacsize) / 3;
+
+ // Always 256*3 values
+ vgahw_set_dac_regs(get_global_seg(), palette_g, 0, palsize);
+ u16 i;
+ for (i = palsize; i < 0x0100; i++) {
+ static u8 rgb[3] VAR16;
+ vgahw_set_dac_regs(get_global_seg(), rgb, i, 1);
+ }
+
+ if ((modeset_ctl & 0x02) == 0x02)
+ perform_gray_scale_summing(0x00, 0x100);
+ }
+
+ vgahw_set_mode(vmode_g);
+
+ if (noclearmem == 0x00)
+ clear_screen(vmode_g);
+
+ // Set CRTC address VGA or MDA
+ u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS;
+ if (GET_GLOBAL(vmode_g->memmodel) == MTEXT)
+ crtc_addr = VGAREG_MDA_CRTC_ADDRESS;
+
+ // Set the BIOS mem
+ u16 cheight = GET_GLOBAL(vmode_g->cheight);
+ SET_BDA(video_mode, mode);
+ SET_BDA(video_cols, GET_GLOBAL(vmode_g->twidth));
+ SET_BDA(video_pagesize, GET_GLOBAL(vmode_g->slength));
+ SET_BDA(crtc_address, crtc_addr);
+ SET_BDA(video_rows, GET_GLOBAL(vmode_g->theight)-1);
+ SET_BDA(char_height, cheight);
+ SET_BDA(video_ctl, (0x60 | noclearmem));
+ SET_BDA(video_switches, 0xF9);
+ SET_BDA(modeset_ctl, GET_BDA(modeset_ctl) & 0x7f);
+
+ // FIXME We nearly have the good tables. to be reworked
+ SET_BDA(dcc_index, 0x08); // 8 is VGA should be ok for now
+ SET_BDA(video_savetable
+ , SEGOFF(get_global_seg(), (u32)&video_save_pointer_table));
+
+ // FIXME
+ SET_BDA(video_msr, 0x00); // Unavailable on vanilla vga, but...
+ SET_BDA(video_pal, 0x00); // Unavailable on vanilla vga, but...
+
+ // Set cursor shape
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
+ set_cursor_shape(0x06, 0x07);
+ // Set cursor pos for page 0..7
+ int i;
+ for (i = 0; i < 8; i++) {
+ struct cursorpos cp = {0, 0, i};
+ set_cursor_pos(cp);
+ }
+
+ // Set active page 0
+ set_active_page(0x00);
+
+ // Write the fonts in memory
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
+ call16_vgaint(0x1104, 0);
+ call16_vgaint(0x1103, 0);
+ }
+ // Set the ints 0x1F and 0x43
+ SET_IVT(0x1f, SEGOFF(get_global_seg(), (u32)&vgafont8[128 * 8]));
+
+ switch (cheight) {
+ case 8:
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont8));
+ break;
+ case 14:
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont14));
+ break;
+ case 16:
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont16));
+ break;
+ }
+}
+
+static void
+handle_1000(struct bregs *regs)
+{
+ u8 noclearmem = regs->al & 0x80;
+ u8 mode = regs->al & 0x7f;
+
+ // Set regs->al
+ if (mode > 7)
+ regs->al = 0x20;
+ else if (mode == 6)
+ regs->al = 0x3f;
+ else
+ regs->al = 0x30;
+
+ if (CONFIG_VGA_CIRRUS) {
+ int ret = cirrus_set_video_mode(mode, noclearmem);
+ if (ret)
+ return;
+ }
+
+ if (bochsvga_enabled())
+ bochsvga_hires_enable(0);
+
+ vga_set_mode(mode, noclearmem);
+}
+
+static void
+handle_1001(struct bregs *regs)
+{
+ set_cursor_shape(regs->ch, regs->cl);
+}
+
+static void
+handle_1002(struct bregs *regs)
+{
+ struct cursorpos cp = {regs->dl, regs->dh, regs->bh};
+ set_cursor_pos(cp);
+}
+
+static void
+handle_1003(struct bregs *regs)
+{
+ regs->cx = get_cursor_shape(regs->bh);
+ struct cursorpos cp = get_cursor_pos(regs->bh);
+ regs->dl = cp.x;
+ regs->dh = cp.y;
+}
+
+// Read light pen pos (unimplemented)
+static void
+handle_1004(struct bregs *regs)
+{
+ debug_stub(regs);
+ regs->ax = regs->bx = regs->cx = regs->dx = 0;
+}
+
+static void
+handle_1005(struct bregs *regs)
+{
+ set_active_page(regs->al);
+}
+
+static void
+verify_scroll(struct bregs *regs, int dir)
+{
+ u8 page = GET_BDA(video_page);
+ struct cursorpos ul = {regs->cl, regs->ch, page};
+ struct cursorpos lr = {regs->dl, regs->dh, page};
+
+ u16 nbrows = GET_BDA(video_rows) + 1;
+ if (lr.y >= nbrows)
+ lr.y = nbrows - 1;
+ u16 nbcols = GET_BDA(video_cols);
+ if (lr.x >= nbcols)
+ lr.x = nbcols - 1;
+
+ if (ul.x > lr.x || ul.y > lr.y)
+ return;
+
+ u16 nblines = regs->al;
+ if (!nblines || nblines > lr.y - ul.y + 1)
+ nblines = lr.y - ul.y + 1;
+
+ vgafb_scroll(dir * nblines, regs->bh, ul, lr);
+}
+
+static void
+handle_1006(struct bregs *regs)
+{
+ verify_scroll(regs, 1);
+}
+
+static void
+handle_1007(struct bregs *regs)
+{
+ verify_scroll(regs, -1);
+}
+
+static void
+handle_1008(struct bregs *regs)
+{
+ struct carattr ca = vgafb_read_char(get_cursor_pos(regs->bh));
+ regs->al = ca.car;
+ regs->ah = ca.attr;
+}
+
+static void noinline
+write_chars(u8 page, struct carattr ca, u16 count)
+{
+ struct cursorpos cp = get_cursor_pos(page);
+ while (count--) {
+ vgafb_write_char(cp, ca);
+ cp.x++;
+ }
+}
+
+static void
+handle_1009(struct bregs *regs)
+{
+ struct carattr ca = {regs->al, regs->bl, 1};
+ write_chars(regs->bh, ca, regs->cx);
+}
+
+static void
+handle_100a(struct bregs *regs)
+{
+ struct carattr ca = {regs->al, regs->bl, 0};
+ write_chars(regs->bh, ca, regs->cx);
+}
+
+
+static void
+handle_100b00(struct bregs *regs)
+{
+ vgahw_set_border_color(regs->bl);
+}
+
+static void
+handle_100b01(struct bregs *regs)
+{
+ vgahw_set_palette(regs->bl);
+}
+
+static void
+handle_100bXX(struct bregs *regs)
+{
+ debug_stub(regs);
+}
+
+static void
+handle_100b(struct bregs *regs)
+{
+ switch (regs->bh) {
+ case 0x00: handle_100b00(regs); break;
+ case 0x01: handle_100b01(regs); break;
+ default: handle_100bXX(regs); break;
+ }
+}
+
+
+static void
+handle_100c(struct bregs *regs)
+{
+ // XXX - page (regs->bh) is unused
+ vgafb_write_pixel(regs->al, regs->cx, regs->dx);
+}
+
+static void
+handle_100d(struct bregs *regs)
+{
+ // XXX - page (regs->bh) is unused
+ regs->al = vgafb_read_pixel(regs->cx, regs->dx);
+}
+
+static void noinline
+handle_100e(struct bregs *regs)
+{
+ // Ralf Brown Interrupt list is WRONG on bh(page)
+ // We do output only on the current page !
+ struct carattr ca = {regs->al, regs->bl, 0};
+ struct cursorpos cp = get_cursor_pos(0xff);
+ write_teletype(&cp, ca);
+ set_cursor_pos(cp);
+}
+
+static void
+handle_100f(struct bregs *regs)
+{
+ regs->bh = GET_BDA(video_page);
+ regs->al = GET_BDA(video_mode) | (GET_BDA(video_ctl) & 0x80);
+ regs->ah = GET_BDA(video_cols);
+}
+
+
+static void
+handle_101000(struct bregs *regs)
+{
+ if (regs->bl > 0x14)
+ return;
+ vgahw_set_single_palette_reg(regs->bl, regs->bh);
+}
+
+static void
+handle_101001(struct bregs *regs)
+{
+ vgahw_set_overscan_border_color(regs->bh);
+}
+
+static void
+handle_101002(struct bregs *regs)
+{
+ vgahw_set_all_palette_reg(regs->es, (u8*)(regs->dx + 0));
+}
+
+static void
+handle_101003(struct bregs *regs)
+{
+ vgahw_toggle_intensity(regs->bl);
+}
+
+static void
+handle_101007(struct bregs *regs)
+{
+ if (regs->bl > 0x14)
+ return;
+ regs->bh = vgahw_get_single_palette_reg(regs->bl);
+}
+
+static void
+handle_101008(struct bregs *regs)
+{
+ regs->bh = vgahw_get_overscan_border_color();
+}
+
+static void
+handle_101009(struct bregs *regs)
+{
+ vgahw_get_all_palette_reg(regs->es, (u8*)(regs->dx + 0));
+}
+
+static void noinline
+handle_101010(struct bregs *regs)
+{
+ u8 rgb[3] = {regs->dh, regs->ch, regs->cl};
+ vgahw_set_dac_regs(GET_SEG(SS), rgb, regs->bx, 1);
+}
+
+static void
+handle_101012(struct bregs *regs)
+{
+ vgahw_set_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx);
+}
+
+static void
+handle_101013(struct bregs *regs)
+{
+ vgahw_select_video_dac_color_page(regs->bl, regs->bh);
+}
+
+static void noinline
+handle_101015(struct bregs *regs)
+{
+ u8 rgb[3];
+ vgahw_get_dac_regs(GET_SEG(SS), rgb, regs->bx, 1);
+ regs->dh = rgb[0];
+ regs->ch = rgb[1];
+ regs->cl = rgb[2];
+}
+
+static void
+handle_101017(struct bregs *regs)
+{
+ vgahw_get_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx);
+}
+
+static void
+handle_101018(struct bregs *regs)
+{
+ vgahw_set_pel_mask(regs->bl);
+}
+
+static void
+handle_101019(struct bregs *regs)
+{
+ regs->bl = vgahw_get_pel_mask();
+}
+
+static void
+handle_10101a(struct bregs *regs)
+{
+ vgahw_read_video_dac_state(®s->bl, ®s->bh);
+}
+
+static void
+handle_10101b(struct bregs *regs)
+{
+ perform_gray_scale_summing(regs->bx, regs->cx);
+}
+
+static void
+handle_1010XX(struct bregs *regs)
+{
+ debug_stub(regs);
+}
+
+static void
+handle_1010(struct bregs *regs)
+{
+ switch (regs->al) {
+ case 0x00: handle_101000(regs); break;
+ case 0x01: handle_101001(regs); break;
+ case 0x02: handle_101002(regs); break;
+ case 0x03: handle_101003(regs); break;
+ case 0x07: handle_101007(regs); break;
+ case 0x08: handle_101008(regs); break;
+ case 0x09: handle_101009(regs); break;
+ case 0x10: handle_101010(regs); break;
+ case 0x12: handle_101012(regs); break;
+ case 0x13: handle_101013(regs); break;
+ case 0x15: handle_101015(regs); break;
+ case 0x17: handle_101017(regs); break;
+ case 0x18: handle_101018(regs); break;
+ case 0x19: handle_101019(regs); break;
+ case 0x1a: handle_10101a(regs); break;
+ case 0x1b: handle_10101b(regs); break;
+ default: handle_1010XX(regs); break;
+ }
+}
+
+
+static void
+handle_101100(struct bregs *regs)
+{
+ vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx
+ , regs->dx, regs->bl, regs->bh);
+}
+
+static void
+handle_101101(struct bregs *regs)
+{
+ vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14);
+}
+
+static void
+handle_101102(struct bregs *regs)
+{
+ vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8);
+}
+
+static void
+handle_101103(struct bregs *regs)
+{
+ vgahw_set_text_block_specifier(regs->bl);
+}
+
+static void
+handle_101104(struct bregs *regs)
+{
+ vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16);
+}
+
+static void
+handle_101110(struct bregs *regs)
+{
+ vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx
+ , regs->dx, regs->bl, regs->bh);
+ set_scan_lines(regs->bh);
+}
+
+static void
+handle_101111(struct bregs *regs)
+{
+ vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14);
+ set_scan_lines(14);
+}
+
+static void
+handle_101112(struct bregs *regs)
+{
+ vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8);
+ set_scan_lines(8);
+}
+
+static void
+handle_101114(struct bregs *regs)
+{
+ vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16);
+ set_scan_lines(16);
+}
+
+static void
+handle_101130(struct bregs *regs)
+{
+ switch (regs->bh) {
+ case 0x00: {
+ struct segoff_s so = GET_IVT(0x1f);
+ regs->es = so.seg;
+ regs->bp = so.offset;
+ break;
+ }
+ case 0x01: {
+ struct segoff_s so = GET_IVT(0x43);
+ regs->es = so.seg;
+ regs->bp = so.offset;
+ break;
+ }
+ case 0x02:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont14;
+ break;
+ case 0x03:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont8;
+ break;
+ case 0x04:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont8 + 128 * 8;
+ break;
+ case 0x05:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont14alt;
+ break;
+ case 0x06:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont16;
+ break;
+ case 0x07:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont16alt;
+ break;
+ default:
+ dprintf(1, "Get font info BH(%02x) was discarded\n", regs->bh);
+ return;
+ }
+ // Set byte/char of on screen font
+ regs->cx = GET_BDA(char_height) & 0xff;
+
+ // Set Highest char row
+ regs->dx = GET_BDA(video_rows);
+}
+
+static void
+handle_1011XX(struct bregs *regs)
+{
+ debug_stub(regs);
+}
+
+static void
+handle_1011(struct bregs *regs)
+{
+ switch (regs->al) {
+ case 0x00: handle_101100(regs); break;
+ case 0x01: handle_101101(regs); break;
+ case 0x02: handle_101102(regs); break;
+ case 0x03: handle_101103(regs); break;
+ case 0x04: handle_101104(regs); break;
+ case 0x10: handle_101110(regs); break;
+ case 0x11: handle_101111(regs); break;
+ case 0x12: handle_101112(regs); break;
+ case 0x14: handle_101114(regs); break;
+ case 0x30: handle_101130(regs); break;
+ default: handle_1011XX(regs); break;
+ }
+}
+
+
+static void
+handle_101210(struct bregs *regs)
+{
+ u16 crtc_addr = GET_BDA(crtc_address);
+ if (crtc_addr == VGAREG_MDA_CRTC_ADDRESS)
+ regs->bx = 0x0103;
+ else
+ regs->bx = 0x0003;
+ regs->cx = GET_BDA(video_switches) & 0x0f;
+}
+
+static void
+handle_101230(struct bregs *regs)
+{
+ u8 mctl = GET_BDA(modeset_ctl);
+ u8 vswt = GET_BDA(video_switches);
+ switch (regs->al) {
+ case 0x00:
+ // 200 lines
+ mctl = (mctl & ~0x10) | 0x80;
+ vswt = (vswt & ~0x0f) | 0x08;
+ break;
+ case 0x01:
+ // 350 lines
+ mctl &= ~0x90;
+ vswt = (vswt & ~0x0f) | 0x09;
+ break;
+ case 0x02:
+ // 400 lines
+ mctl = (mctl & ~0x80) | 0x10;
+ vswt = (vswt & ~0x0f) | 0x09;
+ break;
+ default:
+ dprintf(1, "Select vert res (%02x) was discarded\n", regs->al);
+ break;
+ }
+ SET_BDA(modeset_ctl, mctl);
+ SET_BDA(video_switches, vswt);
+ regs->al = 0x12;
+}
+
+static void
+handle_101231(struct bregs *regs)
+{
+ u8 v = (regs->al & 0x01) << 3;
+ u8 mctl = GET_BDA(video_ctl) & ~0x08;
+ SET_BDA(video_ctl, mctl | v);
+ regs->al = 0x12;
+}
+
+static void
+handle_101232(struct bregs *regs)
+{
+ vgahw_enable_video_addressing(regs->al);
+ regs->al = 0x12;
+}
+
+static void
+handle_101233(struct bregs *regs)
+{
+ u8 v = ((regs->al << 1) & 0x02) ^ 0x02;
+ u8 v2 = GET_BDA(modeset_ctl) & ~0x02;
+ SET_BDA(modeset_ctl, v | v2);
+ regs->al = 0x12;
+}
+
+static void
+handle_101234(struct bregs *regs)
+{
+ u8 v = (regs->al & 0x01) ^ 0x01;
+ u8 v2 = GET_BDA(modeset_ctl) & ~0x01;
+ SET_BDA(modeset_ctl, v | v2);
+ regs->al = 0x12;
+}
+
+static void
+handle_101235(struct bregs *regs)
+{
+ debug_stub(regs);
+ regs->al = 0x12;
+}
+
+static void
+handle_101236(struct bregs *regs)
+{
+ debug_stub(regs);
+ regs->al = 0x12;
+}
+
+static void
+handle_1012XX(struct bregs *regs)
+{
+ debug_stub(regs);
+}
+
+static void
+handle_1012(struct bregs *regs)
+{
+ switch (regs->bl) {
+ case 0x10: handle_101210(regs); break;
+ case 0x30: handle_101230(regs); break;
+ case 0x31: handle_101231(regs); break;
+ case 0x32: handle_101232(regs); break;
+ case 0x33: handle_101233(regs); break;
+ case 0x34: handle_101234(regs); break;
+ case 0x35: handle_101235(regs); break;
+ case 0x36: handle_101236(regs); break;
+ default: handle_1012XX(regs); break;
+ }
+
+ // XXX - cirrus has 1280, 1281, 1282, 1285, 129a, 12a0, 12a1, 12a2, 12ae
+}
+
+
+// Write string
+static void noinline
+handle_1013(struct bregs *regs)
+{
+ struct cursorpos cp = {regs->dl, regs->dh, regs->bh};
+ // if row=0xff special case : use current cursor position
+ if (cp.y == 0xff)
+ cp = get_cursor_pos(cp.page);
+ u8 flag = regs->al;
+ if (flag & 2)
+ write_attr_string(&cp, regs->cx, regs->es, (void*)(regs->bp + 0));
+ else
+ write_string(&cp, regs->bl, regs->cx, regs->es, (void*)(regs->bp + 0));
+
+ if (flag & 1)
+ set_cursor_pos(cp);
+}
+
+
+static void
+handle_101a00(struct bregs *regs)
+{
+ regs->bx = GET_BDA(dcc_index);
+ regs->al = 0x1a;
+}
+
+static void
+handle_101a01(struct bregs *regs)
+{
+ SET_BDA(dcc_index, regs->bl);
+ dprintf(1, "Alternate Display code (%02x) was discarded\n", regs->bh);
+ regs->al = 0x1a;
+}
+
+static void
+handle_101aXX(struct bregs *regs)
+{
+ debug_stub(regs);
+}
+
+static void
+handle_101a(struct bregs *regs)
+{
+ switch (regs->al) {
+ case 0x00: handle_101a00(regs); break;
+ case 0x01: handle_101a01(regs); break;
+ default: handle_101aXX(regs); break;
+ }
+}
+
+
+struct funcInfo {
+ struct segoff_s static_functionality;
+ u8 bda_0x49[30];
+ u8 bda_0x84[3];
+ u8 dcc_index;
+ u8 dcc_alt;
+ u16 colors;
+ u8 pages;
+ u8 scan_lines;
+ u8 primary_char;
+ u8 secondar_char;
+ u8 misc;
+ u8 non_vga_mode;
+ u8 reserved_2f[2];
+ u8 video_mem;
+ u8 save_flags;
+ u8 disp_info;
+ u8 reserved_34[12];
+};
+
+static void
+handle_101b(struct bregs *regs)
+{
+ u16 seg = regs->es;
+ struct funcInfo *info = (void*)(regs->di+0);
+ memset_far(seg, info, 0, sizeof(*info));
+ // Address of static functionality table
+ SET_FARVAR(seg, info->static_functionality
+ , SEGOFF(get_global_seg(), (u32)static_functionality));
+
+ // Hard coded copy from BIOS area. Should it be cleaner ?
+ memcpy_far(seg, info->bda_0x49, SEG_BDA, (void*)0x49
+ , sizeof(info->bda_0x49));
+ memcpy_far(seg, info->bda_0x84, SEG_BDA, (void*)0x84
+ , sizeof(info->bda_0x84));
+
+ SET_FARVAR(seg, info->dcc_index, GET_BDA(dcc_index));
+ SET_FARVAR(seg, info->colors, 16);
+ SET_FARVAR(seg, info->pages, 8);
+ SET_FARVAR(seg, info->scan_lines, 2);
+ SET_FARVAR(seg, info->video_mem, 3);
+ regs->al = 0x1B;
+}
+
+
+static void
+handle_101c00(struct bregs *regs)
+{
+ u16 flags = regs->cx;
+ u16 size = 0;
+ if (flags & 1)
+ size += sizeof(struct saveVideoHardware);
+ if (flags & 2)
+ size += sizeof(struct saveBDAstate);
+ if (flags & 4)
+ size += sizeof(struct saveDACcolors);
+ regs->bx = size;
+ regs->al = 0x1c;
+}
+
+static void
+handle_101c01(struct bregs *regs)
+{
+ u16 flags = regs->cx;
+ u16 seg = regs->es;
+ void *data = (void*)(regs->bx+0);
+ if (flags & 1) {
+ vgahw_save_state(seg, data);
+ data += sizeof(struct saveVideoHardware);
+ }
+ if (flags & 2) {
+ save_bda_state(seg, data);
+ data += sizeof(struct saveBDAstate);
+ }
+ if (flags & 4)
+ vgahw_save_dac_state(seg, data);
+ regs->al = 0x1c;
+}
+
+static void
+handle_101c02(struct bregs *regs)
+{
+ u16 flags = regs->cx;
+ u16 seg = regs->es;
+ void *data = (void*)(regs->bx+0);
+ if (flags & 1) {
+ vgahw_restore_state(seg, data);
+ data += sizeof(struct saveVideoHardware);
+ }
+ if (flags & 2) {
+ restore_bda_state(seg, data);
+ data += sizeof(struct saveBDAstate);
+ }
+ if (flags & 4)
+ vgahw_restore_dac_state(seg, data);
+ regs->al = 0x1c;
+}
+
+static void
+handle_101cXX(struct bregs *regs)
+{
+ debug_stub(regs);
+}
+
+static void
+handle_101c(struct bregs *regs)
+{
+ switch (regs->al) {
+ case 0x00: handle_101c00(regs); break;
+ case 0x01: handle_101c01(regs); break;
+ case 0x02: handle_101c02(regs); break;
+ default: handle_101cXX(regs); break;
+ }
+}
+
+static void
+handle_104f00(struct bregs *regs)
+{
+ u16 seg = regs->es;
+ struct vbe_info *info = (void*)(regs->di+0);
+
+ if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) {
+ dprintf(4, "Get VBE Controller: VBE2 Signature found\n");
+ } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) {
+ dprintf(4, "Get VBE Controller: VESA Signature found\n");
+ } else {
+ dprintf(4, "Get VBE Controller: Invalid Signature\n");
+ }
+
+ memset_far(seg, info, 0, sizeof(*info));
+
+ SET_FARVAR(seg, info->signature, VESA_SIGNATURE);
+
+ SET_FARVAR(seg, info->version, 0x0200);
+
+ SET_FARVAR(seg, info->oem_string,
+ SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING));
+ SET_FARVAR(seg, info->capabilities, 0x1); /* 8BIT DAC */
+
+ /* We generate our mode list in the reserved field of the info block */
+ SET_FARVAR(seg, info->video_mode, SEGOFF(seg, regs->di + 34));
+
+ /* Total memory (in 64 blocks) */
+ SET_FARVAR(seg, info->total_memory, bochsvga_total_mem());
+
+ SET_FARVAR(seg, info->oem_vendor_string,
+ SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING));
+ SET_FARVAR(seg, info->oem_product_string,
+ SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING));
+ SET_FARVAR(seg, info->oem_revision_string,
+ SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING));
+
+ /* Fill list of modes */
+ bochsvga_list_modes(seg, regs->di + 32);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
+}
+
+static void
+handle_104f01(struct bregs *regs)
+{
+ u16 seg = regs->es;
+ struct vbe_mode_info *info = (void*)(regs->di+0);
+ u16 mode = regs->cx;
+ struct vbe_modeinfo modeinfo;
+ int rc;
+
+ dprintf(1, "VBE mode info request: %x\n", mode);
+
+ rc = bochsvga_mode_info(mode, &modeinfo);
+ if (rc) {
+ dprintf(1, "VBE mode %x not found\n", mode);
+ regs->ax = 0x100;
+ return;
+ }
+
+ u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED |
+ VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE |
+ VBE_MODE_ATTRIBUTE_COLOR_MODE |
+ VBE_MODE_ATTRIBUTE_GRAPHICS_MODE;
+ if (modeinfo.depth == 4)
+ mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT;
+ else
+ mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE;
+ SET_FARVAR(seg, info->mode_attributes, mode_attr);
+ SET_FARVAR(seg, info->winA_attributes,
+ VBE_WINDOW_ATTRIBUTE_RELOCATABLE |
+ VBE_WINDOW_ATTRIBUTE_READABLE |
+ VBE_WINDOW_ATTRIBUTE_WRITEABLE);
+ SET_FARVAR(seg, info->winB_attributes, 0);
+ SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */
+ SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */
+ SET_FARVAR(seg, info->winA_seg, 0xA000);
+ SET_FARVAR(seg, info->winB_seg, 0x0);
+ SET_FARVAR(seg, info->win_func_ptr.segoff, 0x0);
+ SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize);
+ SET_FARVAR(seg, info->xres, modeinfo.width);
+ SET_FARVAR(seg, info->yres, modeinfo.height);
+ SET_FARVAR(seg, info->xcharsize, 8);
+ SET_FARVAR(seg, info->ycharsize, 16);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->planes, 4);
+ else
+ SET_FARVAR(seg, info->planes, 1);
+ SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth);
+ SET_FARVAR(seg, info->banks,
+ (modeinfo.linesize * modeinfo.height + 65535) / 65536);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR);
+ else if (modeinfo.depth == 8)
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL);
+ else
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR);
+ SET_FARVAR(seg, info->bank_size, 0);
+ u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->pages, (pages / 4) - 1);
+ else
+ SET_FARVAR(seg, info->pages, pages - 1);
+ SET_FARVAR(seg, info->reserved0, 1);
+
+ u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
+
+ switch (modeinfo.depth) {
+ case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
+ b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
+ case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
+ b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
+ case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
+ b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
+ case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
+ b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
+ default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
+ b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
+ }
+
+ SET_FARVAR(seg, info->red_size, r_size);
+ SET_FARVAR(seg, info->red_pos, r_pos);
+ SET_FARVAR(seg, info->green_size, g_size);
+ SET_FARVAR(seg, info->green_pos, g_pos);
+ SET_FARVAR(seg, info->blue_size, b_size);
+ SET_FARVAR(seg, info->blue_pos, b_pos);
+ SET_FARVAR(seg, info->alpha_size, a_size);
+ SET_FARVAR(seg, info->alpha_pos, a_pos);
+
+ if (modeinfo.depth == 32)
+ SET_FARVAR(seg, info->directcolor_info,
+ VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
+ else
+ SET_FARVAR(seg, info->directcolor_info, 0);
+
+ if (modeinfo.depth > 4)
+ SET_FARVAR(seg, info->phys_base, modeinfo.phys_base);
+ else
+ SET_FARVAR(seg, info->phys_base, 0);
+
+ SET_FARVAR(seg, info->reserved1, 0);
+ SET_FARVAR(seg, info->reserved2, 0);
+ SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize);
+ SET_FARVAR(seg, info->bank_pages, 0);
+ SET_FARVAR(seg, info->linear_pages, 0);
+ SET_FARVAR(seg, info->linear_red_size, r_size);
+ SET_FARVAR(seg, info->linear_red_pos, r_pos);
+ SET_FARVAR(seg, info->linear_green_size, g_size);
+ SET_FARVAR(seg, info->linear_green_pos, g_pos);
+ SET_FARVAR(seg, info->linear_blue_size, b_size);
+ SET_FARVAR(seg, info->linear_blue_pos, b_pos);
+ SET_FARVAR(seg, info->linear_alpha_size, a_size);
+ SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
+ SET_FARVAR(seg, info->pixclock_max, 0);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
+}
+
+static void
+handle_104f02(struct bregs *regs)
+{
+ //u16 seg = regs->es;
+ //struct vbe_crtc_info *crtc_info = (void*)(regs->di+0);
+ u16 mode = regs->bx;
+ struct vbe_modeinfo modeinfo;
+ int rc;
+
+ dprintf(1, "VBE mode set: %x\n", mode);
+
+ if (mode < 0x100) { /* VGA */
+ dprintf(1, "set VGA mode %x\n", mode);
+
+ bochsvga_hires_enable(0);
+ vga_set_mode(mode, 0);
+ } else { /* VBE */
+ rc = bochsvga_mode_info(mode & 0x1ff, &modeinfo);
+ if (rc) {
+ dprintf(1, "VBE mode %x not found\n", mode & 0x1ff);
+ regs->ax = 0x100;
+ return;
+ }
+ bochsvga_hires_enable(1);
+ bochsvga_set_mode(mode & 0x1ff, &modeinfo);
+
+ if (mode & 0x4000) {
+ /* Linear frame buffer */
+ /* XXX: ??? */
+ }
+ if (!(mode & 0x8000)) {
+ bochsvga_clear_scr();
+ }
+ }
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
+}
+
+static void
+handle_104f03(struct bregs *regs)
+{
+ if (!bochsvga_hires_enabled()) {
+ regs->bx = GET_BDA(video_mode);
+ } else {
+ regs->bx = bochsvga_curr_mode();
+ }
+
+ dprintf(1, "VBE current mode=%x\n", regs->bx);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
+}
+
+static void
+handle_104f04(struct bregs *regs)
+{
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
+}
+
+static void
+handle_104f05(struct bregs *regs)
+{
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
+}
+
+static void
+handle_104f06(struct bregs *regs)
+{
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
+}
+
+static void
+handle_104f07(struct bregs *regs)
+{
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
+}
+
+static void
+handle_104f08(struct bregs *regs)
+{
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
+}
+
+static void
+handle_104f0a(struct bregs *regs)
+{
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
+}
+
+static void
+handle_104fXX(struct bregs *regs)
+{
+ debug_stub(regs);
+ regs->ax = 0x0100;
+}
+
+static void
+handle_104f(struct bregs *regs)
+{
+ if (!bochsvga_enabled()) {
+ handle_104fXX(regs);
+ return;
+ }
+
+ switch (regs->al) {
+ case 0x00: handle_104f00(regs); break;
+ case 0x01: handle_104f01(regs); break;
+ case 0x02: handle_104f02(regs); break;
+ case 0x03: handle_104f03(regs); break;
+ case 0x04: handle_104f04(regs); break;
+ case 0x05: handle_104f05(regs); break;
+ case 0x06: handle_104f06(regs); break;
+ case 0x07: handle_104f07(regs); break;
+ case 0x08: handle_104f08(regs); break;
+ case 0x0a: handle_104f0a(regs); break;
+ default: handle_104fXX(regs); break;
+ }
+}
+
+
+static void
+handle_10XX(struct bregs *regs)
+{
+ debug_stub(regs);
+}
+
+// INT 10h Video Support Service Entry Point
+void VISIBLE16
+handle_10(struct bregs *regs)
+{
+ debug_enter(regs, DEBUG_VGA_10);
+ switch (regs->ah) {
+ case 0x00: handle_1000(regs); break;
+ case 0x01: handle_1001(regs); break;
+ case 0x02: handle_1002(regs); break;
+ case 0x03: handle_1003(regs); break;
+ case 0x04: handle_1004(regs); break;
+ case 0x05: handle_1005(regs); break;
+ case 0x06: handle_1006(regs); break;
+ case 0x07: handle_1007(regs); break;
+ case 0x08: handle_1008(regs); break;
+ case 0x09: handle_1009(regs); break;
+ case 0x0a: handle_100a(regs); break;
+ case 0x0b: handle_100b(regs); break;
+ case 0x0c: handle_100c(regs); break;
+ case 0x0d: handle_100d(regs); break;
+ case 0x0e: handle_100e(regs); break;
+ case 0x0f: handle_100f(regs); break;
+ case 0x10: handle_1010(regs); break;
+ case 0x11: handle_1011(regs); break;
+ case 0x12: handle_1012(regs); break;
+ case 0x13: handle_1013(regs); break;
+ case 0x1a: handle_101a(regs); break;
+ case 0x1b: handle_101b(regs); break;
+ case 0x1c: handle_101c(regs); break;
+ case 0x4f: handle_104f(regs); break;
+ default: handle_10XX(regs); break;
+ }
+}
+
+
+/****************************************************************
+ * VGA post
+ ****************************************************************/
+
+static void
+init_bios_area(void)
+{
+ // init detected hardware BIOS Area
+ // set 80x25 color (not clear from RBIL but usual)
+ u16 eqf = GET_BDA(equipment_list_flags);
+ SET_BDA(equipment_list_flags, (eqf & 0xffcf) | 0x20);
+
+ // Just for the first int10 find its children
+
+ // the default char height
+ SET_BDA(char_height, 0x10);
+
+ // Clear the screen
+ SET_BDA(video_ctl, 0x60);
+
+ // Set the basic screen we have
+ SET_BDA(video_switches, 0xf9);
+
+ // Set the basic modeset options
+ SET_BDA(modeset_ctl, 0x51);
+
+ // Set the default MSR
+ SET_BDA(video_msr, 0x09);
+}
+
+void VISIBLE16
+vga_post(struct bregs *regs)
+{
+ debug_enter(regs, DEBUG_VGA_POST);
+
+ vgahw_init();
+
+ if (CONFIG_VGA_GEODELX)
+ geodelx_init();
+
+ init_bios_area();
+
+ bochsvga_init(regs->ah, regs->al);
+
+ extern void entry_10(void);
+ SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10));
+
+ if (CONFIG_VGA_CIRRUS)
+ cirrus_init();
+
+ // XXX - clear screen and display info
+
+ build_video_param();
+
+ // Fixup checksum
+ extern u8 _rom_header_size, _rom_header_checksum;
+ SET_VGA(_rom_header_checksum, 0);
+ u8 sum = -checksum_far(get_global_seg(), 0, _rom_header_size * 512);
+ SET_VGA(_rom_header_checksum, sum);
+}
diff --git a/vgasrc/vgabios.h b/vgasrc/vgabios.h
new file mode 100644
index 0000000..913dd88
--- /dev/null
+++ b/vgasrc/vgabios.h
@@ -0,0 +1,225 @@
+#ifndef __VGABIOS_H
+#define __VGABIOS_H
+
+#include "types.h" // u8
+#include "farptr.h" // struct segoff_s
+
+/*
+ *
+ * VGA registers
+ *
+ */
+#define VGAREG_ACTL_ADDRESS 0x3c0
+#define VGAREG_ACTL_WRITE_DATA 0x3c0
+#define VGAREG_ACTL_READ_DATA 0x3c1
+
+#define VGAREG_INPUT_STATUS 0x3c2
+#define VGAREG_WRITE_MISC_OUTPUT 0x3c2
+#define VGAREG_VIDEO_ENABLE 0x3c3
+#define VGAREG_SEQU_ADDRESS 0x3c4
+#define VGAREG_SEQU_DATA 0x3c5
+
+#define VGAREG_PEL_MASK 0x3c6
+#define VGAREG_DAC_STATE 0x3c7
+#define VGAREG_DAC_READ_ADDRESS 0x3c7
+#define VGAREG_DAC_WRITE_ADDRESS 0x3c8
+#define VGAREG_DAC_DATA 0x3c9
+
+#define VGAREG_READ_FEATURE_CTL 0x3ca
+#define VGAREG_READ_MISC_OUTPUT 0x3cc
+
+#define VGAREG_GRDC_ADDRESS 0x3ce
+#define VGAREG_GRDC_DATA 0x3cf
+
+#define VGAREG_MDA_CRTC_ADDRESS 0x3b4
+#define VGAREG_MDA_CRTC_DATA 0x3b5
+#define VGAREG_VGA_CRTC_ADDRESS 0x3d4
+#define VGAREG_VGA_CRTC_DATA 0x3d5
+
+#define VGAREG_MDA_WRITE_FEATURE_CTL 0x3ba
+#define VGAREG_VGA_WRITE_FEATURE_CTL 0x3da
+#define VGAREG_ACTL_RESET 0x3da
+
+#define VGAREG_MDA_MODECTL 0x3b8
+#define VGAREG_CGA_MODECTL 0x3d8
+#define VGAREG_CGA_PALETTE 0x3d9
+
+/* Video memory */
+#define SEG_GRAPH 0xA000
+#define SEG_CTEXT 0xB800
+#define SEG_MTEXT 0xB000
+
+/*
+ * Tables of default values for each mode
+ */
+#define TEXT 0x80
+
+#define CTEXT (0x00 | TEXT)
+#define MTEXT (0x01 | TEXT)
+#define CGA 0x02
+#define PLANAR1 0x03
+#define PLANAR4 0x04
+#define LINEAR8 0x05
+
+// for SVGA
+#define LINEAR15 0x10
+#define LINEAR16 0x11
+#define LINEAR24 0x12
+#define LINEAR32 0x13
+
+#define SCREEN_IO_START(x,y,p) (((((x)*(y)) | 0x00ff) + 1) * (p))
+#define SCREEN_MEM_START(x,y,p) SCREEN_IO_START(((x)*2),(y),(p))
+
+struct vgamode_s {
+ u8 svgamode;
+ u8 memmodel; /* CTEXT,MTEXT,CGA,PL1,PL2,PL4,P8,P15,P16,P24,P32 */
+ u8 twidth;
+ u8 theight;
+ u8 cheight;
+ u8 pixbits;
+ u16 sstart;
+ u16 slength;
+
+ u8 pelmask;
+ u8 *dac;
+ u16 dacsize;
+ u8 *sequ_regs;
+ u8 miscreg;
+ u8 *crtc_regs;
+ u8 *actl_regs;
+ u8 *grdc_regs;
+};
+
+struct saveVideoHardware {
+ u8 sequ_index;
+ u8 crtc_index;
+ u8 grdc_index;
+ u8 actl_index;
+ u8 feature;
+ u8 sequ_regs[4];
+ u8 sequ0;
+ u8 crtc_regs[25];
+ u8 actl_regs[20];
+ u8 grdc_regs[9];
+ u16 crtc_addr;
+ u8 plane_latch[4];
+};
+
+struct saveBDAstate {
+ u8 video_mode;
+ u16 video_cols;
+ u16 video_pagesize;
+ u16 crtc_address;
+ u8 video_rows;
+ u16 char_height;
+ u8 video_ctl;
+ u8 video_switches;
+ u8 modeset_ctl;
+ u16 cursor_type;
+ u16 cursor_pos[8];
+ u16 video_pagestart;
+ u8 video_page;
+ /* current font */
+ struct segoff_s font0;
+ struct segoff_s font1;
+};
+
+struct saveDACcolors {
+ u8 rwmode;
+ u8 peladdr;
+ u8 pelmask;
+ u8 dac[768];
+ u8 color_select;
+};
+
+// vgatables.c
+struct vgamode_s *find_vga_entry(u8 mode);
+void build_video_param(void);
+extern struct VideoSavePointer_s video_save_pointer_table;
+extern u8 static_functionality[];
+
+// vgafonts.c
+extern u8 vgafont8[];
+extern u8 vgafont14[];
+extern u8 vgafont16[];
+extern u8 vgafont14alt[];
+extern u8 vgafont16alt[];
+
+// vgabios.c
+#define SET_VGA(var, val) SET_FARVAR(get_global_seg(), (var), (val))
+struct carattr {
+ u8 car, attr, use_attr;
+};
+struct cursorpos {
+ u8 x, y, page;
+};
+void vga_set_mode(u8 mode, u8 noclearmem);
+
+// vgafb.c
+void clear_screen(struct vgamode_s *vmode_g);
+void vgafb_scroll(int nblines, int attr
+ , struct cursorpos ul, struct cursorpos lr);
+void vgafb_write_char(struct cursorpos cp, struct carattr ca);
+struct carattr vgafb_read_char(struct cursorpos cp);
+void vgafb_write_pixel(u8 color, u16 x, u16 y);
+u8 vgafb_read_pixel(u16 x, u16 y);
+void vgafb_load_font(u16 seg, void *src_far, u16 count
+ , u16 start, u8 destflags, u8 fontsize);
+
+// vgaio.c
+void vgahw_screen_disable(void);
+void vgahw_screen_enable(void);
+void vgahw_set_border_color(u8 color);
+void vgahw_set_overscan_border_color(u8 color);
+u8 vgahw_get_overscan_border_color(void);
+void vgahw_set_palette(u8 palid);
+void vgahw_set_single_palette_reg(u8 reg, u8 val);
+u8 vgahw_get_single_palette_reg(u8 reg);
+void vgahw_set_all_palette_reg(u16 seg, u8 *data_far);
+void vgahw_get_all_palette_reg(u16 seg, u8 *data_far);
+void vgahw_toggle_intensity(u8 flag);
+void vgahw_select_video_dac_color_page(u8 flag, u8 data);
+void vgahw_read_video_dac_state(u8 *pmode, u8 *curpage);
+void vgahw_set_dac_regs(u16 seg, u8 *data_far, u8 start, int count);
+void vgahw_get_dac_regs(u16 seg, u8 *data_far, u8 start, int count);
+void vgahw_set_pel_mask(u8 val);
+u8 vgahw_get_pel_mask(void);
+void vgahw_save_dac_state(u16 seg, struct saveDACcolors *info);
+void vgahw_restore_dac_state(u16 seg, struct saveDACcolors *info);
+void vgahw_sequ_write(u8 index, u8 value);
+void vgahw_grdc_write(u8 index, u8 value);
+void vgahw_set_text_block_specifier(u8 spec);
+void get_font_access(void);
+void release_font_access(void);
+void vgahw_set_cursor_shape(u8 start, u8 end);
+void vgahw_set_active_page(u16 address);
+void vgahw_set_cursor_pos(u16 address);
+void vgahw_set_scan_lines(u8 lines);
+u16 vgahw_get_vde(void);
+void vgahw_save_state(u16 seg, struct saveVideoHardware *info);
+void vgahw_restore_state(u16 seg, struct saveVideoHardware *info);
+void vgahw_set_mode(struct vgamode_s *vmode_g);
+void vgahw_enable_video_addressing(u8 disable);
+void vgahw_init(void);
+
+// clext.c
+int cirrus_set_video_mode(u8 mode, u8 noclearmem);
+void cirrus_init(void);
+
+// vbe.c
+#define VBE_OEM_STRING "SeaBIOS VBE(C) 2011"
+#define VBE_VENDOR_STRING "SeaBIOS Developers"
+#define VBE_PRODUCT_STRING "SeaBIOS VBE Adapter"
+#define VBE_REVISION_STRING "Rev. 1"
+
+struct vbe_modeinfo
+{
+ u16 width;
+ u16 height;
+ u8 depth;
+ u16 linesize;
+ u32 phys_base;
+ u32 vram_size;
+};
+
+#endif // vgabios.h
diff --git a/vgasrc/vgafb.c b/vgasrc/vgafb.c
index 1e1943d..f85cd28 100644
--- a/vgasrc/vgafb.c
+++ b/vgasrc/vgafb.c
@@ -7,7 +7,7 @@
#include "biosvar.h" // GET_BDA
#include "util.h" // memset_far
-#include "vgatables.h" // find_vga_entry
+#include "vgabios.h" // find_vga_entry
/****************************************************************
diff --git a/vgasrc/vgafonts.c b/vgasrc/vgafonts.c
index 8c1752c..47a6437 100644
--- a/vgasrc/vgafonts.c
+++ b/vgasrc/vgafonts.c
@@ -1,4 +1,4 @@
-#include "vgatables.h" // vgafont8
+#include "vgabios.h" // vgafont8
/*
* These fonts come from ftp://ftp.simtel.net/pub/simtelnet/msdos/screen/fntcol16.zip
diff --git a/vgasrc/vgaio.c b/vgasrc/vgaio.c
index 6154076..bc4c968 100644
--- a/vgasrc/vgaio.c
+++ b/vgasrc/vgaio.c
@@ -8,7 +8,7 @@
#include "ioport.h" // outb
#include "farptr.h" // SET_FARVAR
#include "biosvar.h" // GET_BDA
-#include "vgatables.h" // VGAREG_*
+#include "vgabios.h" // VGAREG_*
// TODO
// * replace direct in/out calls with wrapper functions
diff --git a/vgasrc/vgatables.c b/vgasrc/vgatables.c
index 47395f2..90ffa89 100644
--- a/vgasrc/vgatables.c
+++ b/vgasrc/vgatables.c
@@ -5,7 +5,7 @@
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
-#include "vgatables.h" // struct VideoParamTableEntry_s
+#include "vgabios.h" // struct VideoParamTableEntry_s
#include "biosvar.h" // GET_GLOBAL
#include "util.h" // memcpy_far
diff --git a/vgasrc/vgatables.h b/vgasrc/vgatables.h
deleted file mode 100644
index e0d61c9..0000000
--- a/vgasrc/vgatables.h
+++ /dev/null
@@ -1,225 +0,0 @@
-#ifndef __VGATABLES_H
-#define __VGATABLES_H
-
-#include "types.h" // u8
-#include "farptr.h" // struct segoff_s
-
-/*
- *
- * VGA registers
- *
- */
-#define VGAREG_ACTL_ADDRESS 0x3c0
-#define VGAREG_ACTL_WRITE_DATA 0x3c0
-#define VGAREG_ACTL_READ_DATA 0x3c1
-
-#define VGAREG_INPUT_STATUS 0x3c2
-#define VGAREG_WRITE_MISC_OUTPUT 0x3c2
-#define VGAREG_VIDEO_ENABLE 0x3c3
-#define VGAREG_SEQU_ADDRESS 0x3c4
-#define VGAREG_SEQU_DATA 0x3c5
-
-#define VGAREG_PEL_MASK 0x3c6
-#define VGAREG_DAC_STATE 0x3c7
-#define VGAREG_DAC_READ_ADDRESS 0x3c7
-#define VGAREG_DAC_WRITE_ADDRESS 0x3c8
-#define VGAREG_DAC_DATA 0x3c9
-
-#define VGAREG_READ_FEATURE_CTL 0x3ca
-#define VGAREG_READ_MISC_OUTPUT 0x3cc
-
-#define VGAREG_GRDC_ADDRESS 0x3ce
-#define VGAREG_GRDC_DATA 0x3cf
-
-#define VGAREG_MDA_CRTC_ADDRESS 0x3b4
-#define VGAREG_MDA_CRTC_DATA 0x3b5
-#define VGAREG_VGA_CRTC_ADDRESS 0x3d4
-#define VGAREG_VGA_CRTC_DATA 0x3d5
-
-#define VGAREG_MDA_WRITE_FEATURE_CTL 0x3ba
-#define VGAREG_VGA_WRITE_FEATURE_CTL 0x3da
-#define VGAREG_ACTL_RESET 0x3da
-
-#define VGAREG_MDA_MODECTL 0x3b8
-#define VGAREG_CGA_MODECTL 0x3d8
-#define VGAREG_CGA_PALETTE 0x3d9
-
-/* Video memory */
-#define SEG_GRAPH 0xA000
-#define SEG_CTEXT 0xB800
-#define SEG_MTEXT 0xB000
-
-/*
- * Tables of default values for each mode
- */
-#define TEXT 0x80
-
-#define CTEXT (0x00 | TEXT)
-#define MTEXT (0x01 | TEXT)
-#define CGA 0x02
-#define PLANAR1 0x03
-#define PLANAR4 0x04
-#define LINEAR8 0x05
-
-// for SVGA
-#define LINEAR15 0x10
-#define LINEAR16 0x11
-#define LINEAR24 0x12
-#define LINEAR32 0x13
-
-#define SCREEN_IO_START(x,y,p) (((((x)*(y)) | 0x00ff) + 1) * (p))
-#define SCREEN_MEM_START(x,y,p) SCREEN_IO_START(((x)*2),(y),(p))
-
-struct vgamode_s {
- u8 svgamode;
- u8 memmodel; /* CTEXT,MTEXT,CGA,PL1,PL2,PL4,P8,P15,P16,P24,P32 */
- u8 twidth;
- u8 theight;
- u8 cheight;
- u8 pixbits;
- u16 sstart;
- u16 slength;
-
- u8 pelmask;
- u8 *dac;
- u16 dacsize;
- u8 *sequ_regs;
- u8 miscreg;
- u8 *crtc_regs;
- u8 *actl_regs;
- u8 *grdc_regs;
-};
-
-struct saveVideoHardware {
- u8 sequ_index;
- u8 crtc_index;
- u8 grdc_index;
- u8 actl_index;
- u8 feature;
- u8 sequ_regs[4];
- u8 sequ0;
- u8 crtc_regs[25];
- u8 actl_regs[20];
- u8 grdc_regs[9];
- u16 crtc_addr;
- u8 plane_latch[4];
-};
-
-struct saveBDAstate {
- u8 video_mode;
- u16 video_cols;
- u16 video_pagesize;
- u16 crtc_address;
- u8 video_rows;
- u16 char_height;
- u8 video_ctl;
- u8 video_switches;
- u8 modeset_ctl;
- u16 cursor_type;
- u16 cursor_pos[8];
- u16 video_pagestart;
- u8 video_page;
- /* current font */
- struct segoff_s font0;
- struct segoff_s font1;
-};
-
-struct saveDACcolors {
- u8 rwmode;
- u8 peladdr;
- u8 pelmask;
- u8 dac[768];
- u8 color_select;
-};
-
-// vgatables.c
-struct vgamode_s *find_vga_entry(u8 mode);
-void build_video_param(void);
-extern struct VideoSavePointer_s video_save_pointer_table;
-extern u8 static_functionality[];
-
-// vgafonts.c
-extern u8 vgafont8[];
-extern u8 vgafont14[];
-extern u8 vgafont16[];
-extern u8 vgafont14alt[];
-extern u8 vgafont16alt[];
-
-// vga.c
-#define SET_VGA(var, val) SET_FARVAR(get_global_seg(), (var), (val))
-struct carattr {
- u8 car, attr, use_attr;
-};
-struct cursorpos {
- u8 x, y, page;
-};
-void vga_set_mode(u8 mode, u8 noclearmem);
-
-// vgafb.c
-void clear_screen(struct vgamode_s *vmode_g);
-void vgafb_scroll(int nblines, int attr
- , struct cursorpos ul, struct cursorpos lr);
-void vgafb_write_char(struct cursorpos cp, struct carattr ca);
-struct carattr vgafb_read_char(struct cursorpos cp);
-void vgafb_write_pixel(u8 color, u16 x, u16 y);
-u8 vgafb_read_pixel(u16 x, u16 y);
-void vgafb_load_font(u16 seg, void *src_far, u16 count
- , u16 start, u8 destflags, u8 fontsize);
-
-// vgaio.c
-void vgahw_screen_disable(void);
-void vgahw_screen_enable(void);
-void vgahw_set_border_color(u8 color);
-void vgahw_set_overscan_border_color(u8 color);
-u8 vgahw_get_overscan_border_color(void);
-void vgahw_set_palette(u8 palid);
-void vgahw_set_single_palette_reg(u8 reg, u8 val);
-u8 vgahw_get_single_palette_reg(u8 reg);
-void vgahw_set_all_palette_reg(u16 seg, u8 *data_far);
-void vgahw_get_all_palette_reg(u16 seg, u8 *data_far);
-void vgahw_toggle_intensity(u8 flag);
-void vgahw_select_video_dac_color_page(u8 flag, u8 data);
-void vgahw_read_video_dac_state(u8 *pmode, u8 *curpage);
-void vgahw_set_dac_regs(u16 seg, u8 *data_far, u8 start, int count);
-void vgahw_get_dac_regs(u16 seg, u8 *data_far, u8 start, int count);
-void vgahw_set_pel_mask(u8 val);
-u8 vgahw_get_pel_mask(void);
-void vgahw_save_dac_state(u16 seg, struct saveDACcolors *info);
-void vgahw_restore_dac_state(u16 seg, struct saveDACcolors *info);
-void vgahw_sequ_write(u8 index, u8 value);
-void vgahw_grdc_write(u8 index, u8 value);
-void vgahw_set_text_block_specifier(u8 spec);
-void get_font_access(void);
-void release_font_access(void);
-void vgahw_set_cursor_shape(u8 start, u8 end);
-void vgahw_set_active_page(u16 address);
-void vgahw_set_cursor_pos(u16 address);
-void vgahw_set_scan_lines(u8 lines);
-u16 vgahw_get_vde(void);
-void vgahw_save_state(u16 seg, struct saveVideoHardware *info);
-void vgahw_restore_state(u16 seg, struct saveVideoHardware *info);
-void vgahw_set_mode(struct vgamode_s *vmode_g);
-void vgahw_enable_video_addressing(u8 disable);
-void vgahw_init(void);
-
-// clext.c
-int cirrus_set_video_mode(u8 mode, u8 noclearmem);
-void cirrus_init(void);
-
-// vbe.c
-#define VBE_OEM_STRING "SeaBIOS VBE(C) 2011"
-#define VBE_VENDOR_STRING "SeaBIOS Developers"
-#define VBE_PRODUCT_STRING "SeaBIOS VBE Adapter"
-#define VBE_REVISION_STRING "Rev. 1"
-
-struct vbe_modeinfo
-{
- u16 width;
- u16 height;
- u8 depth;
- u16 linesize;
- u32 phys_base;
- u32 vram_size;
-};
-
-#endif // vgatables.h
--
1.7.6.4
More information about the SeaBIOS
mailing list