diff options
Diffstat (limited to 'recipes/qemu/qemu-0.12.5/05_bochs_vbe.diff')
| -rw-r--r-- | recipes/qemu/qemu-0.12.5/05_bochs_vbe.diff | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/recipes/qemu/qemu-0.12.5/05_bochs_vbe.diff b/recipes/qemu/qemu-0.12.5/05_bochs_vbe.diff new file mode 100644 index 0000000000..da6092ddca --- /dev/null +++ b/recipes/qemu/qemu-0.12.5/05_bochs_vbe.diff @@ -0,0 +1,66 @@ +commit af92284bec7ddbd76ddd105c40718627dda3407e +Author: Gerd Hoffmann <kraxel@redhat.com> +Date: Thu Mar 25 11:38:52 2010 +0100 + + update bochs vbe interface + + The bochs vbe interface got a new register a while back, which specifies + the linear framebuffer size in 64k units. This patch adds support for + the new register to qemu. With this patch applied vgabios 0.6c works + with qemu. + + Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> + Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> + +diff --git a/hw/vga.c b/hw/vga.c +index 6a1a059..bb65677 100644 +--- a/hw/vga.c ++++ b/hw/vga.c +@@ -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 23a42ef..6a46a43 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 |