diff options
| -rw-r--r-- | hw/vga.c | 6 | ||||
| -rw-r--r-- | hw/vga_int.h | 4 |
2 files changed, 7 insertions, 3 deletions
@@ -522,7 +522,7 @@ static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr) VGACommonState *s = opaque; uint32_t val; - if (s->vbe_index <= VBE_DISPI_INDEX_NB) { + 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 ? */ @@ -542,6 +542,8 @@ static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr) } else { val = s->vbe_regs[s->vbe_index]; } + } else if (s->vbe_index == VBE_DISPI_INDEX_VIDEO_MEMORY_64K) { + val = s->vram_size / (64 * 1024); } else { val = 0; } @@ -1955,7 +1957,7 @@ void vga_common_reset(VGACommonState *s) #ifdef CONFIG_BOCHS_VBE s->vbe_index = 0; memset(s->vbe_regs, '\0', sizeof(s->vbe_regs)); - s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0; + s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID5; s->vbe_start_addr = 0; s->vbe_line_offset = 0; s->vbe_bank_mask = (s->vram_size >> 16) - 1; diff --git a/hw/vga_int.h b/hw/vga_int.h index 23a42efce1..6a46a434fe 100644 --- a/hw/vga_int.h +++ b/hw/vga_int.h @@ -47,13 +47,15 @@ #define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7 #define VBE_DISPI_INDEX_X_OFFSET 0x8 #define VBE_DISPI_INDEX_Y_OFFSET 0x9 -#define VBE_DISPI_INDEX_NB 0xa +#define VBE_DISPI_INDEX_NB 0xa /* size of vbe_regs[] */ +#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa /* read-only, not in vbe_regs */ #define VBE_DISPI_ID0 0xB0C0 #define VBE_DISPI_ID1 0xB0C1 #define VBE_DISPI_ID2 0xB0C2 #define VBE_DISPI_ID3 0xB0C3 #define VBE_DISPI_ID4 0xB0C4 +#define VBE_DISPI_ID5 0xB0C5 #define VBE_DISPI_DISABLED 0x00 #define VBE_DISPI_ENABLED 0x01 |