stdvga_list_modes(seg, dest, last);
}
-static void
-bochsvga_hires_enable(int enable)
-{
- u16 flags = enable ?
- VBE_DISPI_ENABLED |
- VBE_DISPI_LFB_ENABLED |
- VBE_DISPI_NOCLEARMEM : 0;
-
- dispi_write(VBE_DISPI_INDEX_ENABLE, flags);
-}
-
int
bochsvga_get_window(struct vgamode_s *vmode_g, int window)
{
return 0;
}
-static void
-bochsvga_clear_scr(void)
-{
- u16 en;
-
- en = dispi_read(VBE_DISPI_INDEX_ENABLE);
- en &= ~VBE_DISPI_NOCLEARMEM;
- dispi_write(VBE_DISPI_INDEX_ENABLE, en);
-}
-
int
bochsvga_set_mode(struct vgamode_s *vmode_g, int flags)
{
- if (! is_bochsvga_mode(vmode_g)) {
- bochsvga_hires_enable(0);
+ dispi_write(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_DISABLED);
+ if (! is_bochsvga_mode(vmode_g))
return stdvga_set_mode(vmode_g, flags);
- }
-
- bochsvga_hires_enable(1);
u8 depth = GET_GLOBAL(vmode_g->depth);
if (depth == 4)
dispi_write(VBE_DISPI_INDEX_XRES, width);
dispi_write(VBE_DISPI_INDEX_YRES, height);
dispi_write(VBE_DISPI_INDEX_BANK, 0);
+ u16 bf = ((flags & MF_NOCLEARMEM ? VBE_DISPI_NOCLEARMEM : 0)
+ | (flags & MF_LINEARFB ? VBE_DISPI_LFB_ENABLED : 0));
+ dispi_write(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED | bf);
/* VGA compat setup */
- //XXX: This probably needs some reverse engineering
u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS;
stdvga_crtc_write(crtc_addr, 0x11, 0x00);
stdvga_crtc_write(crtc_addr, 0x01, width / 8 - 1);
- dispi_write(VBE_DISPI_INDEX_VIRT_WIDTH, width);
+ stdvga_set_linelength(vmode_g, width);
stdvga_crtc_write(crtc_addr, 0x12, height - 1);
u8 v = 0;
if ((height - 1) & 0x0100)
stdvga_grdc_mask(0x05, 0x20, 0x40);
}
- if (flags & MF_LINEARFB) {
- /* Linear frame buffer */
- /* XXX: ??? */
- }
- if (!(flags & MF_NOCLEARMEM)) {
- bochsvga_clear_scr();
- }
-
return 0;
}