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vesa: explicitly request VBE 2.0 information 

We also skip any non-direct-color modes now.
This commit is contained in:
Christian Helmuth 2013-12-04 15:41:57 +01:00
parent eaed3ba207
commit 776fdceaa5
1 changed files with 7 additions and 0 deletions
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7
libports/src/drivers/framebuffer/vesa/framebuffer.cc
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@ -63,6 +63,10 @@ static uint16_t get_vesa_mode(mb_vbe_ctrl_t *ctrl_info, mb_vbe_mode_t *mode_info
if (X86emu::x86emu_cmd(VBE_INFO_FUNC, 0, *MODE_PTR(off), VESA_MODE_OFFS) != VBE_SUPPORTED)
continue;
enum { DIRECT_COLOR = 0x06 };
if (mode_info->memory_model != DIRECT_COLOR)
continue;
if (verbose)
printf(" 0x%03x %ux%u@%u\n", *MODE_PTR(off), mode_info->x_resolution,
mode_info->y_resolution,
@ -179,6 +183,9 @@ int Framebuffer_drv::set_mode(unsigned long width, unsigned long height,
mode_info = reinterpret_cast<mb_vbe_mode_t*>(X86emu::x86_mem.data_addr()
+ VESA_MODE_OFFS);
/* request VBE 2.0 information */
memcpy(ctrl_info->signature, "VBE2", 4);
/* retrieve controller information */
if (X86emu::x86emu_cmd(VBE_CONTROL_FUNC, 0, 0, VESA_CTRL_OFFS) != VBE_SUPPORTED) {
PWRN("VBE Bios not present");