On Tue, 2007-07-03 at 16:31 -0700, Andrew Morton wrote:
> On Mon, 02 Jul 2007 10:06:17 -0700
> Chandramouli Narayanan <[EMAIL PROTECTED]> wrote:
>
> > EFI x86_64 support Patch 3 of 3 (try #2)
> > ----------------------------------------
> > - Fixed redundant check in efifb_init().
> >
> > This patch depends on the EFI x86_64 patches 1/3 and 2/3.
> >
> > This patch adds Graphics Output Protocol support to the kernel.
> > x86_64 systems with UEFI2.0 firmware conform to UEFI 2.0 specification.
> > UEFI2.0 spec deprecates Universal Graphics Adapter (UGA) protocol and
> > only Graphics Output Protocol (GOP) is produced. Therefore, the boot loader
> > needs to query the UEFI firmware with appropriate Output Protocol and
> > pass the video information to the kernel. As a result of GOP
> > protocol, an EFI framebuffer driver is needed for displaying console
> > messages.
> > Patch 3 of 3 adds a EFI framebuffer driver. The EFI frame buffer driver in
> > this
> > patch is based on the Intel Mac framebuffer driver.
> >
> > The x86_64 ELILO bootloader takes care of passing the video information
> > as appropriate for EFI firmware.
> >
>
> That's more like a changelog.
>
> Please cc [EMAIL PROTECTED] and "Antonino A. Daplas"
> <[EMAIL PROTECTED]> on framebuffer driver patches.
Ok, will cc them.
> >
> > +config FB_EFI
> > + bool "EFI-based Framebuffer Support"
> > + depends on (FB = y) && X86 && EFI
>
> So this is selectable on i386 as well. Has it been tested there?
I will test it.
> > +
> > +#include <linux/delay.h>
> > +#include <linux/errno.h>
> > +#include <linux/fb.h>
> > +#include <linux/kernel.h>
> > +#include <linux/init.h>
> > +#include <linux/ioport.h>
> > +#include <linux/mm.h>
> > +#include <linux/module.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/screen_info.h>
> > +#include <linux/slab.h>
> > +#include <linux/string.h>
> > +#include <linux/dmi.h>
> > +#include <linux/efi.h>
> > +
> > +#include <asm/io.h>
>
> checkpatch.pl will save me work.
Sorry, the next version will be checked with checkpatch.pl firstly.
> > +#ifndef __i386__
> > + //screen_info.imacpm_seg = 0;
> > +#endif
>
> hmm.
>
> > +
> > + if (!request_mem_region(efifb_fix.smem_start, size_total, "efifb")) {
> > + printk(KERN_WARNING
> > + "efifb: cannot reserve video memory at 0x%lx\n",
> > + efifb_fix.smem_start);
>
> KERN_ERR?
>
>
Best Regards,
Huang, Ying
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