#include "bregs.h" // struct bregs
#include "biosvar.h" // GET_BDA
#include "util.h" // memset
-#include "vgabios.h" // find_vga_entry
+#include "vgabios.h" // calc_page_size
#include "optionroms.h" // struct pci_data
#include "config.h" // CONFIG_*
-#include "stdvga.h" // stdvga_screen_disable
-#include "geodelx.h" // geodelx_init
+#include "stdvga.h" // stdvga_set_cursor_shape
+#include "geodevga.h" // geodevga_init
#include "bochsvga.h" // bochsvga_init
+#include "clext.h" // clext_init
+#include "vgahw.h" // vgahw_set_mode
// XXX
#define DEBUG_VGA_POST 1
* Helper functions
****************************************************************/
-static void
-perform_gray_scale_summing(u16 start, u16 count)
+u16
+calc_page_size(u8 memmodel, u16 width, u16 height)
{
- stdvga_screen_disable();
- int i;
- for (i = start; i < start+count; i++) {
- u8 rgb[3];
- stdvga_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;
-
- stdvga_set_dac_regs(GET_SEG(SS), rgb, i, 1);
+ switch (memmodel) {
+ case MM_TEXT:
+ return ALIGN(width * height * 2, 2*1024);
+ case MM_CGA:
+ return 16*1024;
+ default:
+ return ALIGN(width * height / 8, 8*1024);
}
- stdvga_screen_enable();
}
static void
if (cp.page != current)
return;
- // Get the dimensions
+ // Calculate the memory address
u16 nbcols = GET_BDA(video_cols);
- u16 nbrows = GET_BDA(video_rows) + 1;
+ u16 address = (GET_BDA(video_pagesize) * cp.page
+ + (cp.x + cp.y * nbcols) * 2);
- // Calculate the address knowing nbcols nbrows and page num
- u16 address = (SCREEN_IO_START(nbcols, nbrows, cp.page)
- + cp.x + cp.y * nbcols);
-
- stdvga_set_cursor_pos(address);
+ stdvga_set_cursor_pos(address / 2);
}
static struct cursorpos
return;
// Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+ struct vgamode_s *vmode_g = vgahw_find_mode(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);
- }
-
- stdvga_set_active_page(address);
+ // Calculate memory address of start of page
+ u8 memmodel = GET_GLOBAL(vmode_g->memmodel);
+ u16 address = GET_BDA(video_pagesize) * page;
+ stdvga_set_active_page(memmodel == MM_TEXT ? address / 2 : address);
// And change the BIOS page
+ SET_BDA(video_pagestart, address);
SET_BDA(video_page, page);
dprintf(1, "Set active page %02x address %04x\n", page, address);
u8 rows = vde / lines;
SET_BDA(video_rows, rows - 1);
u16 cols = GET_BDA(video_cols);
- SET_BDA(video_pagesize, rows * cols * 2);
+ SET_BDA(video_pagesize, calc_page_size(MM_TEXT, cols, rows));
}
SET_IVT(0x43, GET_FARVAR(seg, info->font1));
}
-
-/****************************************************************
- * VGA int 10 handler
- ****************************************************************/
-
-// set video mode
+// Setup BDA after a mode switch.
void
-vga_set_mode(u8 mode, u8 noclearmem)
+modeswitch_set_bda(int mode, int flags, struct vgamode_s *vmode_g)
{
- // 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
- stdvga_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
- stdvga_set_dac_regs(get_global_seg(), palette_g, 0, palsize);
- u16 i;
- for (i = palsize; i < 0x0100; i++) {
- static u8 rgb[3] VAR16;
- stdvga_set_dac_regs(get_global_seg(), rgb, i, 1);
- }
-
- if ((modeset_ctl & 0x02) == 0x02)
- perform_gray_scale_summing(0x00, 0x100);
- }
-
- stdvga_set_mode(vmode_g);
-
- if (noclearmem == 0x00)
- clear_screen(vmode_g);
-
- // Write the fonts in memory
- u8 memmodel = GET_GLOBAL(vmode_g->memmodel);
- if (memmodel & TEXT)
- stdvga_load_font(get_global_seg(), vgafont16, 0x100, 0, 0, 16);
-
// Set the BIOS mem
- u16 cheight = GET_GLOBAL(vmode_g->cheight);
+ int width = GET_GLOBAL(vmode_g->width);
+ int height = GET_GLOBAL(vmode_g->height);
+ u8 memmodel = GET_GLOBAL(vmode_g->memmodel);
+ int 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));
+ if (memmodel == MM_TEXT) {
+ SET_BDA(video_cols, width);
+ SET_BDA(video_rows, height-1);
+ SET_BDA(cursor_type, 0x0607);
+ } else {
+ int cwidth = GET_GLOBAL(vmode_g->cwidth);
+ SET_BDA(video_cols, width / cwidth);
+ SET_BDA(video_rows, (height / cheight) - 1);
+ SET_BDA(cursor_type, 0x0000);
+ }
+ SET_BDA(video_pagesize, calc_page_size(memmodel, width, height));
SET_BDA(crtc_address, stdvga_get_crtc());
- SET_BDA(video_rows, GET_GLOBAL(vmode_g->theight)-1);
SET_BDA(char_height, cheight);
- SET_BDA(video_ctl, (0x60 | noclearmem));
+ SET_BDA(video_ctl, 0x60 | (flags & MF_NOCLEARMEM ? 0x80 : 0x00));
SET_BDA(video_switches, 0xF9);
SET_BDA(modeset_ctl, GET_BDA(modeset_ctl) & 0x7f);
- SET_BDA(cursor_type, memmodel & TEXT ? 0x0607 : 0x0000);
int i;
for (i=0; i<8; i++)
SET_BDA(cursor_pos[i], 0x0000);
}
}
+
+/****************************************************************
+ * VGA int 10 handler
+ ****************************************************************/
+
static void
handle_1000(struct bregs *regs)
{
- u8 noclearmem = regs->al & 0x80;
- u8 mode = regs->al & 0x7f;
+ int mode = regs->al & 0x7f;
// Set regs->al
if (mode > 7)
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);
+ int flags = GET_BDA(modeset_ctl) & (MF_NOPALETTE|MF_GRAYSUM);
+ if (regs->al & 0x80)
+ flags |= MF_NOCLEARMEM;
- vga_set_mode(mode, noclearmem);
+ vgahw_set_mode(mode, flags);
}
static void
static void
handle_10101b(struct bregs *regs)
{
- perform_gray_scale_summing(regs->bx, regs->cx);
+ stdvga_perform_gray_scale_summing(regs->bx, regs->cx);
}
static void
SET_BDA(video_msr, 0x09);
}
+u16 VgaBDF VAR16;
+
void VISIBLE16
vga_post(struct bregs *regs)
{
debug_enter(regs, DEBUG_VGA_POST);
- stdvga_init();
+ SET_VGA(VgaBDF, regs->ax);
- if (CONFIG_VGA_GEODELX)
- geodelx_init();
+ int ret = vgahw_init();
+ if (ret) {
+ dprintf(1, "Failed to initialize VGA hardware. Exiting.\n");
+ return;
+ }
init_bios_area();
- bochsvga_init(regs->ah, regs->al);
+ build_video_param();
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);