Colin Watson cfe456dc03 Use write-combining MTRR to speed up video with buggy BIOSes.
* grub-core/video/i386/pc/vbe.c (framebuffer): New member mtrr.
	(cpuid): New define.
	(rdmsr): Likewise.
	(wrmsr): Likewise.
	(mtrr_base): Likewise.
	(mtrr_mask): Likewise.
	(grub_vbe_enable_mtrr_entry): New function.
	(grub_vbe_enable_mtrr): Likewise.
	(grub_vbe_disable_mtrr): Likewise.
	(grub_vbe_bios_set_display_start): Disable mtrr when handing the
	control off to BIOS.
	(grub_video_vbe_init): Fill mtrr.
	(grub_video_vbe_fini): Disable mtrr.
	(grub_video_vbe_get_info_and_fini): Likewise.
	(grub_video_vbe_setup): Enable mtrr.
2012-02-27 22:31:51 +01:00
2010-09-21 00:09:23 +01:00
2012-02-27 10:37:03 +01:00
2012-02-23 17:21:38 +01:00
2012-02-23 07:25:45 +01:00
2011-04-22 19:04:21 +02:00
2011-01-11 00:06:01 +01:00
2012-02-23 17:21:38 +01:00
2010-07-13 12:20:32 +01:00

This is GRUB 2, the second version of the GRand Unified Bootloader.
GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more
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See the file NEWS for a description of recent changes to GRUB 2.

See the file INSTALL for instructions on how to build and install the
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Please visit the official web page of GRUB 2, for more information.
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