#include "stdvga.h" // stdvga_set_cursor_shape
#include "clext.h" // clext_1012
#include "vgahw.h" // vgahw_set_mode
#include "stdvga.h" // stdvga_set_cursor_shape
#include "clext.h" // clext_1012
#include "vgahw.h" // vgahw_set_mode
+// Return the bits per pixel in system memory for a given mode.
+int
+vga_bpp(struct vgamode_s *vmode_g)
+{
+ switch (GET_GLOBAL(vmode_g->memmodel)) {
+ case MM_TEXT:
+ return 16;
+ case MM_PLANAR:
+ return 1;
+ }
+ u8 depth = GET_GLOBAL(vmode_g->depth);
+ if (depth > 8)
+ return ALIGN(depth, 8);
+ return depth;
+}
+
- SET_BDA(video_mode, GET_FARVAR(seg, info->video_mode));
+ u16 mode = GET_FARVAR(seg, info->video_mode);
+ SET_BDA(video_mode, mode);
+ SET_BDA(vbe_mode, 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_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));
+ dprintf(1, "set VGA mode %x\n", mode);
+ struct vgamode_s *vmode_g = vgahw_find_mode(mode);
+ if (!vmode_g)
+ return VBE_RETURN_STATUS_FAILED;
+
+ int ret = vgahw_set_mode(vmode_g, flags);
+ if (ret)
+ return ret;
+
// Set the BIOS mem
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 the BIOS mem
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);
+ if (mode < 0x100)
+ SET_BDA(video_mode, mode);
+ else
+ SET_BDA(video_mode, 0xff);
+ SET_BDA(vbe_mode, mode | (flags & MF_VBEFLAGS));
if (memmodel == MM_TEXT) {
SET_BDA(video_cols, width);
SET_BDA(video_rows, height-1);
if (memmodel == MM_TEXT) {
SET_BDA(video_cols, width);
SET_BDA(video_rows, height-1);
void VISIBLE16
vga_post(struct bregs *regs)
{
debug_enter(regs, DEBUG_VGA_POST);
void VISIBLE16
vga_post(struct bregs *regs)
{
debug_enter(regs, DEBUG_VGA_POST);
- SET_VGA(VgaBDF, regs->ax);
+ if (CONFIG_VGA_PCI) {
+ u16 bdf = regs->ax;
+ if (pci_config_readw(bdf, PCI_VENDOR_ID) == CONFIG_VGA_VID
+ && pci_config_readw(bdf, PCI_DEVICE_ID) == CONFIG_VGA_DID)
+ SET_VGA(VgaBDF, bdf);
+ }