//
// This file may be distributed under the terms of the GNU LGPLv3 license.
+#include "vgabios.h" // struct vgamode_s
#include "stdvga.h" // stdvga_init
#include "ioport.h" // outb
#include "farptr.h" // SET_FARVAR
#include "biosvar.h" // GET_GLOBAL
#include "util.h" // memcpy_far
-#include "vbe.h" // VBE_RETURN_STATUS_FAILED
-
-// TODO
-// * replace direct in/out calls with wrapper functions
/****************************************************************
* Attribute control
****************************************************************/
-static void
-stdvga_screen_disable(void)
-{
- inb(VGAREG_ACTL_RESET);
- outb(0x00, VGAREG_ACTL_ADDRESS);
-}
-
-static void
-stdvga_screen_enable(void)
-{
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
-
void
stdvga_set_border_color(u8 color)
{
- inb(VGAREG_ACTL_RESET);
- outb(0x00, VGAREG_ACTL_ADDRESS);
u8 v1 = color & 0x0f;
if (v1 & 0x08)
v1 += 0x08;
- outb(v1, VGAREG_ACTL_WRITE_DATA);
+ stdvga_attr_write(0x00, v1);
- u8 v2 = color & 0x10;
int i;
- for (i = 1; i < 4; i++) {
- outb(i, VGAREG_ACTL_ADDRESS);
-
- u8 cur = inb(VGAREG_ACTL_READ_DATA);
- cur &= 0xef;
- cur |= v2;
- outb(cur, VGAREG_ACTL_WRITE_DATA);
- }
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ for (i = 1; i < 4; i++)
+ stdvga_attr_mask(i, 0x10, color & 0x10);
}
void
stdvga_set_overscan_border_color(u8 color)
{
- inb(VGAREG_ACTL_RESET);
- outb(0x11, VGAREG_ACTL_ADDRESS);
- outb(color, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ stdvga_attr_write(0x11, color);
}
u8
stdvga_get_overscan_border_color(void)
{
- inb(VGAREG_ACTL_RESET);
- outb(0x11, VGAREG_ACTL_ADDRESS);
- u8 v = inb(VGAREG_ACTL_READ_DATA);
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
- return v;
+ return stdvga_attr_read(0x11);
}
void
stdvga_set_palette(u8 palid)
{
- inb(VGAREG_ACTL_RESET);
- palid &= 0x01;
int i;
- for (i = 1; i < 4; i++) {
- outb(i, VGAREG_ACTL_ADDRESS);
-
- u8 v = inb(VGAREG_ACTL_READ_DATA);
- v &= 0xfe;
- v |= palid;
- outb(v, VGAREG_ACTL_WRITE_DATA);
- }
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ for (i = 1; i < 4; i++)
+ stdvga_attr_mask(i, 0x01, palid & 0x01);
}
void
stdvga_set_all_palette_reg(u16 seg, u8 *data_far)
{
- inb(VGAREG_ACTL_RESET);
int i;
for (i = 0; i < 0x10; i++) {
- outb(i, VGAREG_ACTL_ADDRESS);
- u8 val = GET_FARVAR(seg, *data_far);
- outb(val, VGAREG_ACTL_WRITE_DATA);
+ stdvga_attr_write(i, GET_FARVAR(seg, *data_far));
data_far++;
}
- outb(0x11, VGAREG_ACTL_ADDRESS);
- outb(GET_FARVAR(seg, *data_far), VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ stdvga_attr_write(0x11, GET_FARVAR(seg, *data_far));
}
void
{
int i;
for (i = 0; i < 0x10; i++) {
- inb(VGAREG_ACTL_RESET);
- outb(i, VGAREG_ACTL_ADDRESS);
- SET_FARVAR(seg, *data_far, inb(VGAREG_ACTL_READ_DATA));
+ SET_FARVAR(seg, *data_far, stdvga_attr_read(i));
data_far++;
}
- inb(VGAREG_ACTL_RESET);
- outb(0x11, VGAREG_ACTL_ADDRESS);
- SET_FARVAR(seg, *data_far, inb(VGAREG_ACTL_READ_DATA));
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ SET_FARVAR(seg, *data_far, stdvga_attr_read(0x11));
}
void
stdvga_toggle_intensity(u8 flag)
{
- inb(VGAREG_ACTL_RESET);
- outb(0x10, VGAREG_ACTL_ADDRESS);
- u8 val = (inb(VGAREG_ACTL_READ_DATA) & 0xf7) | ((flag & 0x01) << 3);
- outb(val, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ stdvga_attr_mask(0x10, 0x08, (flag & 0x01) << 3);
}
void
stdvga_select_video_dac_color_page(u8 flag, u8 data)
{
- inb(VGAREG_ACTL_RESET);
- outb(0x10, VGAREG_ACTL_ADDRESS);
- u8 val = inb(VGAREG_ACTL_READ_DATA);
if (!(flag & 0x01)) {
// select paging mode
- val = (val & 0x7f) | (data << 7);
- outb(val, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ stdvga_attr_mask(0x10, 0x80, data << 7);
return;
}
// select page
- inb(VGAREG_ACTL_RESET);
- outb(0x14, VGAREG_ACTL_ADDRESS);
+ u8 val = stdvga_attr_read(0x10);
if (!(val & 0x80))
data <<= 2;
data &= 0x0f;
- outb(data, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ stdvga_attr_write(0x14, data);
}
void
stdvga_read_video_dac_state(u8 *pmode, u8 *curpage)
{
- inb(VGAREG_ACTL_RESET);
- outb(0x10, VGAREG_ACTL_ADDRESS);
- u8 val1 = inb(VGAREG_ACTL_READ_DATA) >> 7;
-
- inb(VGAREG_ACTL_RESET);
- outb(0x14, VGAREG_ACTL_ADDRESS);
- u8 val2 = inb(VGAREG_ACTL_READ_DATA) & 0x0f;
+ u8 val1 = stdvga_attr_read(0x10) >> 7;
+ u8 val2 = stdvga_attr_read(0x14) & 0x0f;
if (!(val1 & 0x01))
val2 >>= 2;
-
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-
*pmode = val1;
*curpage = val2;
}
/* XXX: check this */
SET_FARVAR(seg, info->rwmode, inb(VGAREG_DAC_STATE));
SET_FARVAR(seg, info->peladdr, inb(VGAREG_DAC_WRITE_ADDRESS));
- SET_FARVAR(seg, info->pelmask, inb(VGAREG_PEL_MASK));
+ SET_FARVAR(seg, info->pelmask, stdvga_pelmask_read());
stdvga_dac_read(seg, info->dac, 0, 256);
SET_FARVAR(seg, info->color_select, 0);
}
void
stdvga_restore_dac_state(u16 seg, struct saveDACcolors *info)
{
- outb(GET_FARVAR(seg, info->pelmask), VGAREG_PEL_MASK);
+ stdvga_pelmask_write(GET_FARVAR(seg, info->pelmask));
stdvga_dac_write(seg, info->dac, 0, 256);
outb(GET_FARVAR(seg, info->peladdr), VGAREG_DAC_WRITE_ADDRESS);
}
void
stdvga_perform_gray_scale_summing(u16 start, u16 count)
{
- stdvga_screen_disable();
+ stdvga_attrindex_write(0x00);
int i;
for (i = start; i < start+count; i++) {
u8 rgb[3];
stdvga_dac_write(GET_SEG(SS), rgb, i, 1);
}
- stdvga_screen_enable();
+ stdvga_attrindex_write(0x20);
}
void
stdvga_set_text_block_specifier(u8 spec)
{
- outw((spec << 8) | 0x03, VGAREG_SEQU_ADDRESS);
+ stdvga_sequ_write(0x03, spec);
+}
+
+// Enable reads and writes to the given "plane" when in planar4 mode.
+void
+stdvga_planar4_plane(int plane)
+{
+ if (plane < 0) {
+ // Return to default mode (read plane0, write all planes)
+ stdvga_sequ_write(0x02, 0x0f);
+ stdvga_grdc_write(0x04, 0);
+ } else {
+ stdvga_sequ_write(0x02, 1<<plane);
+ stdvga_grdc_write(0x04, plane);
+ }
}
static void
get_font_access(void)
{
- outw(0x0100, VGAREG_SEQU_ADDRESS);
- outw(0x0402, VGAREG_SEQU_ADDRESS);
- outw(0x0704, VGAREG_SEQU_ADDRESS);
- outw(0x0300, VGAREG_SEQU_ADDRESS);
- outw(0x0204, VGAREG_GRDC_ADDRESS);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
- outw(0x0406, VGAREG_GRDC_ADDRESS);
+ stdvga_sequ_write(0x00, 0x01);
+ stdvga_sequ_write(0x02, 0x04);
+ stdvga_sequ_write(0x04, 0x07);
+ stdvga_sequ_write(0x00, 0x03);
+ stdvga_grdc_write(0x04, 0x02);
+ stdvga_grdc_write(0x05, 0x00);
+ stdvga_grdc_write(0x06, 0x04);
}
static void
release_font_access(void)
{
- outw(0x0100, VGAREG_SEQU_ADDRESS);
- outw(0x0302, VGAREG_SEQU_ADDRESS);
- outw(0x0304, VGAREG_SEQU_ADDRESS);
- outw(0x0300, VGAREG_SEQU_ADDRESS);
- u16 v = (inb(VGAREG_READ_MISC_OUTPUT) & 0x01) ? 0x0e : 0x0a;
- outw((v << 8) | 0x06, VGAREG_GRDC_ADDRESS);
- outw(0x0004, VGAREG_GRDC_ADDRESS);
- outw(0x1005, VGAREG_GRDC_ADDRESS);
+ stdvga_sequ_write(0x00, 0x01);
+ stdvga_sequ_write(0x02, 0x03);
+ stdvga_sequ_write(0x04, 0x03);
+ stdvga_sequ_write(0x00, 0x03);
+ u16 v = (stdvga_misc_read() & 0x01) ? 0x0e : 0x0a;
+ stdvga_grdc_write(0x06, v);
+ stdvga_grdc_write(0x04, 0x00);
+ stdvga_grdc_write(0x05, 0x10);
}
void
return VGAREG_MDA_CRTC_ADDRESS;
}
-void
-stdvga_set_cursor_shape(u8 start, u8 end)
+// Return the multiplication factor needed for the vga offset register.
+int
+stdvga_bpp_factor(struct vgamode_s *vmode_g)
{
- u16 crtc_addr = stdvga_get_crtc();
- outb(0x0a, crtc_addr);
- outb(start, crtc_addr + 1);
- outb(0x0b, crtc_addr);
- outb(end, crtc_addr + 1);
+ switch (GET_GLOBAL(vmode_g->memmodel)) {
+ case MM_TEXT:
+ return 2;
+ case MM_CGA:
+ return GET_GLOBAL(vmode_g->depth);
+ case MM_PLANAR:
+ return 1;
+ default:
+ return 4;
+ }
}
void
-stdvga_set_active_page(u16 address)
+stdvga_set_cursor_shape(u8 start, u8 end)
{
u16 crtc_addr = stdvga_get_crtc();
- outb(0x0c, crtc_addr);
- outb((address & 0xff00) >> 8, crtc_addr + 1);
- outb(0x0d, crtc_addr);
- outb(address & 0x00ff, crtc_addr + 1);
+ stdvga_crtc_write(crtc_addr, 0x0a, start);
+ stdvga_crtc_write(crtc_addr, 0x0b, end);
}
void
-stdvga_set_cursor_pos(u16 address)
+stdvga_set_cursor_pos(int address)
{
u16 crtc_addr = stdvga_get_crtc();
- outb(0x0e, crtc_addr);
- outb((address & 0xff00) >> 8, crtc_addr + 1);
- outb(0x0f, crtc_addr);
- outb(address & 0x00ff, crtc_addr + 1);
+ address /= 2; // Assume we're in text mode.
+ stdvga_crtc_write(crtc_addr, 0x0e, address >> 8);
+ stdvga_crtc_write(crtc_addr, 0x0f, address);
}
void
stdvga_set_scan_lines(u8 lines)
{
- u16 crtc_addr = stdvga_get_crtc();
- outb(0x09, crtc_addr);
- u8 crtc_r9 = inb(crtc_addr + 1);
- crtc_r9 = (crtc_r9 & 0xe0) | (lines - 1);
- outb(crtc_r9, crtc_addr + 1);
+ stdvga_crtc_mask(stdvga_get_crtc(), 0x09, 0x1f, lines - 1);
}
// Get vertical display end
stdvga_get_vde(void)
{
u16 crtc_addr = stdvga_get_crtc();
- outb(0x12, crtc_addr);
- u16 vde = inb(crtc_addr + 1);
- outb(0x07, crtc_addr);
- u8 ovl = inb(crtc_addr + 1);
+ u16 vde = stdvga_crtc_read(crtc_addr, 0x12);
+ u8 ovl = stdvga_crtc_read(crtc_addr, 0x07);
vde += (((ovl & 0x02) << 7) + ((ovl & 0x40) << 3) + 1);
return vde;
}
+int
+stdvga_get_window(struct vgamode_s *vmode_g, int window)
+{
+ return -1;
+}
+
+int
+stdvga_set_window(struct vgamode_s *vmode_g, int window, int val)
+{
+ return -1;
+}
+
+int
+stdvga_get_linelength(struct vgamode_s *vmode_g)
+{
+ u8 val = stdvga_crtc_read(stdvga_get_crtc(), 0x13);
+ return val * stdvga_bpp_factor(vmode_g) * 2;
+}
+
+int
+stdvga_set_linelength(struct vgamode_s *vmode_g, int val)
+{
+ int factor = stdvga_bpp_factor(vmode_g) * 2;
+ stdvga_crtc_write(stdvga_get_crtc(), 0x13, DIV_ROUND_UP(val, factor));
+ return 0;
+}
+
+int
+stdvga_get_displaystart(struct vgamode_s *vmode_g)
+{
+ u16 crtc_addr = stdvga_get_crtc();
+ int addr = (stdvga_crtc_read(crtc_addr, 0x0c) << 8
+ | stdvga_crtc_read(crtc_addr, 0x0d));
+ return addr * stdvga_bpp_factor(vmode_g);
+}
+
+int
+stdvga_set_displaystart(struct vgamode_s *vmode_g, int val)
+{
+ u16 crtc_addr = stdvga_get_crtc();
+ val /= stdvga_bpp_factor(vmode_g);
+ stdvga_crtc_write(crtc_addr, 0x0c, val >> 8);
+ stdvga_crtc_write(crtc_addr, 0x0d, val);
+ return 0;
+}
+
/****************************************************************
- * Save/Restore/Set state
+ * Save/Restore state
****************************************************************/
void
SET_FARVAR(seg, info->sequ_index, inb(VGAREG_SEQU_ADDRESS));
SET_FARVAR(seg, info->crtc_index, inb(crtc_addr));
SET_FARVAR(seg, info->grdc_index, inb(VGAREG_GRDC_ADDRESS));
- inb(VGAREG_ACTL_RESET);
- u16 ar_index = inb(VGAREG_ACTL_ADDRESS);
- SET_FARVAR(seg, info->actl_index, ar_index);
+ SET_FARVAR(seg, info->actl_index, stdvga_attrindex_read());
SET_FARVAR(seg, info->feature, inb(VGAREG_READ_FEATURE_CTL));
- u16 i;
- for (i=0; i<4; i++) {
- outb(i+1, VGAREG_SEQU_ADDRESS);
- SET_FARVAR(seg, info->sequ_regs[i], inb(VGAREG_SEQU_DATA));
- }
- outb(0, VGAREG_SEQU_ADDRESS);
- SET_FARVAR(seg, info->sequ0, inb(VGAREG_SEQU_DATA));
+ int i;
+ for (i=0; i<4; i++)
+ SET_FARVAR(seg, info->sequ_regs[i], stdvga_sequ_read(i+1));
+ SET_FARVAR(seg, info->sequ0, stdvga_sequ_read(0));
- for (i=0; i<25; i++) {
- outb(i, crtc_addr);
- SET_FARVAR(seg, info->crtc_regs[i], inb(crtc_addr + 1));
- }
+ for (i=0; i<25; i++)
+ SET_FARVAR(seg, info->crtc_regs[i], stdvga_crtc_read(crtc_addr, i));
- for (i=0; i<20; i++) {
- inb(VGAREG_ACTL_RESET);
- outb(i | (ar_index & 0x20), VGAREG_ACTL_ADDRESS);
- SET_FARVAR(seg, info->actl_regs[i], inb(VGAREG_ACTL_READ_DATA));
- }
- inb(VGAREG_ACTL_RESET);
+ for (i=0; i<20; i++)
+ SET_FARVAR(seg, info->actl_regs[i], stdvga_attr_read(i));
- for (i=0; i<9; i++) {
- outb(i, VGAREG_GRDC_ADDRESS);
- SET_FARVAR(seg, info->grdc_regs[i], inb(VGAREG_GRDC_DATA));
- }
+ for (i=0; i<9; i++)
+ SET_FARVAR(seg, info->grdc_regs[i], stdvga_grdc_read(i));
SET_FARVAR(seg, info->crtc_addr, crtc_addr);
void
stdvga_restore_state(u16 seg, struct saveVideoHardware *info)
{
- // Reset Attribute Ctl flip-flop
- inb(VGAREG_ACTL_RESET);
-
- u16 crtc_addr = GET_FARVAR(seg, info->crtc_addr);
-
- u16 i;
- for (i=0; i<4; i++) {
- outb(i+1, VGAREG_SEQU_ADDRESS);
- outb(GET_FARVAR(seg, info->sequ_regs[i]), VGAREG_SEQU_DATA);
- }
- outb(0, VGAREG_SEQU_ADDRESS);
- outb(GET_FARVAR(seg, info->sequ0), VGAREG_SEQU_DATA);
+ int i;
+ for (i=0; i<4; i++)
+ stdvga_sequ_write(i+1, GET_FARVAR(seg, info->sequ_regs[i]));
+ stdvga_sequ_write(0x00, GET_FARVAR(seg, info->sequ0));
// Disable CRTC write protection
- outw(0x0011, crtc_addr);
+ u16 crtc_addr = GET_FARVAR(seg, info->crtc_addr);
+ stdvga_crtc_write(crtc_addr, 0x11, 0x00);
// Set CRTC regs
for (i=0; i<25; i++)
- if (i != 0x11) {
- outb(i, crtc_addr);
- outb(GET_FARVAR(seg, info->crtc_regs[i]), crtc_addr + 1);
- }
+ if (i != 0x11)
+ stdvga_crtc_write(crtc_addr, i, GET_FARVAR(seg, info->crtc_regs[i]));
// select crtc base address
- u16 v = inb(VGAREG_READ_MISC_OUTPUT) & ~0x01;
- if (crtc_addr == VGAREG_VGA_CRTC_ADDRESS)
- v |= 0x01;
- outb(v, VGAREG_WRITE_MISC_OUTPUT);
+ stdvga_misc_mask(0x01, crtc_addr == VGAREG_VGA_CRTC_ADDRESS ? 0x01 : 0x00);
// enable write protection if needed
- outb(0x11, crtc_addr);
- outb(GET_FARVAR(seg, info->crtc_regs[0x11]), crtc_addr + 1);
+ stdvga_crtc_write(crtc_addr, 0x11, GET_FARVAR(seg, info->crtc_regs[0x11]));
// Set Attribute Ctl
- u16 ar_index = GET_FARVAR(seg, info->actl_index);
- inb(VGAREG_ACTL_RESET);
- for (i=0; i<20; i++) {
- outb(i | (ar_index & 0x20), VGAREG_ACTL_ADDRESS);
- outb(GET_FARVAR(seg, info->actl_regs[i]), VGAREG_ACTL_WRITE_DATA);
- }
- outb(ar_index, VGAREG_ACTL_ADDRESS);
- inb(VGAREG_ACTL_RESET);
+ for (i=0; i<20; i++)
+ stdvga_attr_write(i, GET_FARVAR(seg, info->actl_regs[i]));
+ stdvga_attrindex_write(GET_FARVAR(seg, info->actl_index));
- for (i=0; i<9; i++) {
- outb(i, VGAREG_GRDC_ADDRESS);
- outb(GET_FARVAR(seg, info->grdc_regs[i]), VGAREG_GRDC_DATA);
- }
+ for (i=0; i<9; i++)
+ stdvga_grdc_write(i, GET_FARVAR(seg, info->grdc_regs[i]));
outb(GET_FARVAR(seg, info->sequ_index), VGAREG_SEQU_ADDRESS);
outb(GET_FARVAR(seg, info->crtc_index), crtc_addr);
outb(GET_FARVAR(seg, info->feature), crtc_addr - 0x4 + 0xa);
}
-static void
-clear_screen(struct vgamode_s *vmode_g)
-{
- switch (GET_GLOBAL(vmode_g->memmodel)) {
- case MM_TEXT:
- memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0720, 32*1024);
- break;
- case MM_CGA:
- memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0000, 32*1024);
- break;
- default:
- // XXX - old code gets/sets/restores sequ register 2 to 0xf -
- // but it should always be 0xf anyway.
- memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0000, 64*1024);
- }
-}
-
-int
-stdvga_set_mode(int mode, int flags)
-{
- // find the entry in the video modes
- struct vgamode_s *vmode_g = stdvga_find_mode(mode);
- dprintf(1, "mode search %02x found %p\n", mode, vmode_g);
- if (!vmode_g)
- return VBE_RETURN_STATUS_FAILED;
- struct stdvga_mode_s *stdmode_g = container_of(
- vmode_g, struct stdvga_mode_s, info);
-
- // if palette loading (bit 3 of modeset ctl = 0)
- if (!(flags & MF_NOPALETTE)) { // Set the PEL mask
- stdvga_pelmask_write(GET_GLOBAL(stdmode_g->pelmask));
-
- // From which palette
- u8 *palette_g = GET_GLOBAL(stdmode_g->dac);
- u16 palsize = GET_GLOBAL(stdmode_g->dacsize) / 3;
-
- // Always 256*3 values
- stdvga_dac_write(get_global_seg(), palette_g, 0, palsize);
- u16 i;
- for (i = palsize; i < 0x0100; i++) {
- static u8 rgb[3] VAR16;
- stdvga_dac_write(get_global_seg(), rgb, i, 1);
- }
-
- if (flags & MF_GRAYSUM)
- stdvga_perform_gray_scale_summing(0x00, 0x100);
- }
-
- // Reset Attribute Ctl flip-flop
- inb(VGAREG_ACTL_RESET);
-
- // Set Attribute Ctl
- u8 *regs = GET_GLOBAL(stdmode_g->actl_regs);
- u16 i;
- for (i = 0; i <= 0x13; i++) {
- outb(i, VGAREG_ACTL_ADDRESS);
- outb(GET_GLOBAL(regs[i]), VGAREG_ACTL_WRITE_DATA);
- }
- outb(0x14, VGAREG_ACTL_ADDRESS);
- outb(0x00, VGAREG_ACTL_WRITE_DATA);
-
- // Set Sequencer Ctl
- outb(0, VGAREG_SEQU_ADDRESS);
- outb(0x03, VGAREG_SEQU_DATA);
- regs = GET_GLOBAL(stdmode_g->sequ_regs);
- for (i = 1; i <= 4; i++) {
- outb(i, VGAREG_SEQU_ADDRESS);
- outb(GET_GLOBAL(regs[i - 1]), VGAREG_SEQU_DATA);
- }
-
- // Set Grafx Ctl
- regs = GET_GLOBAL(stdmode_g->grdc_regs);
- for (i = 0; i <= 8; i++) {
- outb(i, VGAREG_GRDC_ADDRESS);
- outb(GET_GLOBAL(regs[i]), VGAREG_GRDC_DATA);
- }
-
- // Set CRTC address VGA or MDA
- u8 miscreg = GET_GLOBAL(stdmode_g->miscreg);
- u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS;
- if (!(miscreg & 1))
- crtc_addr = VGAREG_MDA_CRTC_ADDRESS;
-
- // Disable CRTC write protection
- outw(0x0011, crtc_addr);
- // Set CRTC regs
- regs = GET_GLOBAL(stdmode_g->crtc_regs);
- for (i = 0; i <= 0x18; i++) {
- outb(i, crtc_addr);
- outb(GET_GLOBAL(regs[i]), crtc_addr + 1);
- }
-
- // Set the misc register
- outb(miscreg, VGAREG_WRITE_MISC_OUTPUT);
-
- // Enable video
- outb(0x20, VGAREG_ACTL_ADDRESS);
- inb(VGAREG_ACTL_RESET);
-
- // Clear screen
- if (!(flags & MF_NOCLEARMEM))
- clear_screen(vmode_g);
-
- // Write the fonts in memory
- u8 memmodel = GET_GLOBAL(vmode_g->memmodel);
- if (memmodel == MM_TEXT)
- stdvga_load_font(get_global_seg(), vgafont16, 0x100, 0, 0, 16);
-
- // Setup BDA variables
- modeswitch_set_bda(mode, flags, vmode_g);
-
- return 0;
-}
-
/****************************************************************
* Misc
****************************************************************/
-void
-stdvga_list_modes(u16 seg, u16 *dest, u16 *last)
-{
- SET_FARVAR(seg, *dest, 0xffff);
-}
-
void
stdvga_enable_video_addressing(u8 disable)
{
u8 v = (disable & 1) ? 0x00 : 0x02;
- u8 v2 = inb(VGAREG_READ_MISC_OUTPUT) & ~0x02;
- outb(v | v2, VGAREG_WRITE_MISC_OUTPUT);
+ stdvga_misc_mask(0x02, v);
}
int
stdvga_init(void)
{
// switch to color mode and enable CPU access 480 lines
- outb(0xc3, VGAREG_WRITE_MISC_OUTPUT);
+ stdvga_misc_write(0xc3);
// more than 64k 3C4/04
- outb(0x04, VGAREG_SEQU_ADDRESS);
- outb(0x02, VGAREG_SEQU_DATA);
+ stdvga_sequ_write(0x04, 0x02);
return 0;
}
projects / seabios.git / blobdiff