Re: [PATCH 1/3] Generic acpi vgapost

[Jiri Slaby <jirislaby@gmail.com>]

Michael Marineau napsal(a):

> Generic function to post the video bios.
>
> Based directly on the original patch by Ole Rohne.
>
> Signed-off-by: Michael Marineau <marineam@engr.orst.edu>
>  
>
> ------------------------------------------------------------------------
>
> Index: linux-2.6.13-rc7/arch/i386/kernel/acpi/sleep.c
> ===================================================================
> --- linux-2.6.13-rc7.orig/arch/i386/kernel/acpi/sleep.c
> +++ linux-2.6.13-rc7/arch/i386/kernel/acpi/sleep.c
> @@ -5,6 +5,7 @@
>  *  Copyright (C) 2001-2003 Pavel Machek <pavel@suse.cz>
>  */
>
> +#include <linux/module.h>
> #include <linux/acpi.h>
> #include <linux/bootmem.h>
> #include <linux/dmi.h>
> @@ -56,6 +57,34 @@ void acpi_restore_state_mem (void)
> 	zap_low_mappings();
> }
>
> +/*
> + * acpi_vgapost
> + */
> +
> +extern void do_vgapost_lowlevel (unsigned long);
> +
> +void acpi_vgapost (unsigned long slot)
> +{
> +	unsigned long flags, saved_video_flags = acpi_video_flags;
> +
> +	acpi_video_flags = (slot & 0xffff) << 16 | 1;
> +
> +	/* Map low memory and copy information */
> +	init_low_mapping(swapper_pg_dir, USER_PTRS_PER_PGD);
> +	memcpy((void *) acpi_wakeup_address, &wakeup_start, &wakeup_end - &wakeup_start);
>  
80 chars on a line, again...

> +	acpi_copy_wakeup_routine(acpi_wakeup_address);
> +
> +	/* Tunnel thru real mode */
> +	local_irq_save(flags);
> +	do_vgapost_lowlevel(acpi_wakeup_address);
> +	local_irq_restore(flags);
>  

--
Jiri Slaby         www.fi.muni.cz/~xslaby
~\-/~      jirislaby@gmail.com      ~\-/~
241B347EC88228DE51EE A49C4A73A25004CB2A10

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