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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
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Date: Tue, 11 Jun 2013 15:14:05 -0300
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Subject: [PATCH] Disable GRUB video support for IBM power machines
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Should fix the problem in bugzilla:
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https://bugzilla.redhat.com/show_bug.cgi?id=973205
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---
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grub-core/kern/ieee1275/cmain.c | 5 ++++-
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grub-core/video/ieee1275.c | 9 ++++++---
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include/grub/ieee1275/ieee1275.h | 2 ++
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3 files changed, 12 insertions(+), 4 deletions(-)
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diff --git a/grub-core/kern/ieee1275/cmain.c b/grub-core/kern/ieee1275/cmain.c
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index 3e12e6b24..3e14f5393 100644
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--- a/grub-core/kern/ieee1275/cmain.c
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+++ b/grub-core/kern/ieee1275/cmain.c
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@@ -90,7 +90,10 @@ grub_ieee1275_find_options (void)
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}
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if (rc >= 0 && grub_strncmp (tmp, "IBM", 3) == 0)
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- grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS);
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+ {
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+ grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS);
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+ grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_DISABLE_VIDEO_SUPPORT);
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+ }
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/* Old Macs have no key repeat, newer ones have fully working one.
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The ones inbetween when repeated key generates an escaoe sequence
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diff --git a/grub-core/video/ieee1275.c b/grub-core/video/ieee1275.c
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index 17a3dbbb5..b8e4b3feb 100644
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--- a/grub-core/video/ieee1275.c
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+++ b/grub-core/video/ieee1275.c
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@@ -352,9 +352,12 @@ static struct grub_video_adapter grub_video_ieee1275_adapter =
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GRUB_MOD_INIT(ieee1275_fb)
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{
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- find_display ();
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- if (display)
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- grub_video_register (&grub_video_ieee1275_adapter);
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+ if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_DISABLE_VIDEO_SUPPORT))
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+ {
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+ find_display ();
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+ if (display)
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+ grub_video_register (&grub_video_ieee1275_adapter);
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+ }
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}
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GRUB_MOD_FINI(ieee1275_fb)
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diff --git a/include/grub/ieee1275/ieee1275.h b/include/grub/ieee1275/ieee1275.h
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index 2310f33db..ca08bd966 100644
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--- a/include/grub/ieee1275/ieee1275.h
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+++ b/include/grub/ieee1275/ieee1275.h
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@@ -146,6 +146,8 @@ enum grub_ieee1275_flag
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GRUB_IEEE1275_FLAG_BROKEN_REPEAT,
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GRUB_IEEE1275_FLAG_CURSORONOFF_ANSI_BROKEN,
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+
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+ GRUB_IEEE1275_FLAG_DISABLE_VIDEO_SUPPORT
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};
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extern int EXPORT_FUNC(grub_ieee1275_test_flag) (enum grub_ieee1275_flag flag);
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