VGAState *s = opaque;
uint32_t val;
- if (s->vbe_index <= VBE_DISPI_INDEX_NB)
- val = s->vbe_regs[s->vbe_index];
- else
+ if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
+ if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
+ switch(s->vbe_index) {
+ /* XXX: do not hardcode ? */
+ case VBE_DISPI_INDEX_XRES:
+ val = VBE_DISPI_MAX_XRES;
+ break;
+ case VBE_DISPI_INDEX_YRES:
+ val = VBE_DISPI_MAX_YRES;
+ break;
+ case VBE_DISPI_INDEX_BPP:
+ val = VBE_DISPI_MAX_BPP;
+ break;
+ default:
+ val = s->vbe_regs[s->vbe_index];
+ break;
+ }
+ } else {
+ val = s->vbe_regs[s->vbe_index];
+ }
+ } else {
val = 0;
+ }
#ifdef DEBUG_BOCHS_VBE
printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
#endif
s->bank_offset = (val << 16);
break;
case VBE_DISPI_INDEX_ENABLE:
- if (val & VBE_DISPI_ENABLED) {
+ if ((val & VBE_DISPI_ENABLED) &&
+ !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
int h, shift_control;
s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
s->vbe_start_addr = 0;
-
+
/* clear the screen (should be done in BIOS) */
if (!(val & VBE_DISPI_NOCLEARMEM)) {
memset(s->vram_ptr, 0,
s->cr[0x13] = s->vbe_line_offset >> 3;
/* width */
s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
- /* height */
+ /* height (only meaningful if < 1024) */
h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
s->cr[0x12] = h;
s->cr[0x07] = (s->cr[0x07] & ~0x42) |
{
int width, height;
- width = (s->cr[0x01] + 1) * 8;
- height = s->cr[0x12] |
- ((s->cr[0x07] & 0x02) << 7) |
- ((s->cr[0x07] & 0x40) << 3);
- height = (height + 1);
+#ifdef CONFIG_BOCHS_VBE
+ if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
+ width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
+ height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
+ } else
+#endif
+ {
+ width = (s->cr[0x01] + 1) * 8;
+ height = s->cr[0x12] |
+ ((s->cr[0x07] & 0x02) << 7) |
+ ((s->cr[0x07] & 0x40) << 3);
+ height = (height + 1);
+ }
*pwidth = width;
*pheight = height;
}
/* bochs VBE support */
#define CONFIG_BOCHS_VBE
-#define VBE_DISPI_MAX_XRES 1024
-#define VBE_DISPI_MAX_YRES 768
+#define VBE_DISPI_MAX_XRES 1600
+#define VBE_DISPI_MAX_YRES 1200
+#define VBE_DISPI_MAX_BPP 32
#define VBE_DISPI_INDEX_ID 0x0
#define VBE_DISPI_INDEX_XRES 0x1
#define VBE_DISPI_DISABLED 0x00
#define VBE_DISPI_ENABLED 0x01
+#define VBE_DISPI_GETCAPS 0x02
+#define VBE_DISPI_8BIT_DAC 0x20
#define VBE_DISPI_LFB_ENABLED 0x40
#define VBE_DISPI_NOCLEARMEM 0x80
#endif /* !CONFIG_BOCHS_VBE */
#define CH_ATTR_SIZE (160 * 100)
-#define VGA_MAX_HEIGHT 1024
+#define VGA_MAX_HEIGHT 2048
#define VGA_STATE_COMMON \
uint8_t *vram_ptr; \