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44 lines
1.7 KiB
44 lines
1.7 KiB
9 months ago
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Daniel Axtens <dja@axtens.net>
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Date: Mon, 16 Aug 2021 16:01:47 +1000
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Subject: [PATCH] powerpc: fix prefix + signed grub special case for PowerVM
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Mea culpa: when testing the PowerPC special case for signed grub, I
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assumed qemu and PowerVM would behave identically. This was wrong, and
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with hindsight a pretty dumb error.
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This fixes it. This time, I am actually testing on PowerVM.
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Signed-off-by: Daniel Axtens <dja@axtens.net>
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---
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grub-core/kern/main.c | 15 +++++++++++++--
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1 file changed, 13 insertions(+), 2 deletions(-)
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diff --git a/grub-core/kern/main.c b/grub-core/kern/main.c
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index 25dbcfef1..40a709117 100644
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--- a/grub-core/kern/main.c
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+++ b/grub-core/kern/main.c
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@@ -235,9 +235,20 @@ grub_set_prefix_and_root (void)
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which will have now been extended to device=$fwdisk,partition
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and path=/path
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- So we only need to act if device = ieee1275/disk exactly.
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+ - PowerVM will give us device names like
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+ ieee1275//vdevice/v-scsi@3000006c/disk@8100000000000000
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+ and we don't want to try to encode some sort of truth table about
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+ what sorts of paths represent disks with partition tables and those
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+ without partition tables.
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+
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+ So we act unless there is a comma in the device, which would indicate
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+ a partition has already been specified.
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+
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+ (If we only have a path, the code in normal to discover config files
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+ will try both without partitions and then with any partitions so we
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+ will cover both CDs and HDs.)
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*/
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- if (grub_strncmp (device, "ieee1275/disk", 14) == 0)
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+ if (grub_strchr (device, ',') == NULL)
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grub_env_set ("prefix", path);
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else
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#endif
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