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Use GRUB legacy loader for HP t520 to fix boot with GRUB 2.12 #3562

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merged 1 commit into from
Aug 26, 2024
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Use GRUB legacy loader for HP t520 to fix boot with GRUB 2.12 #3562

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23 changes: 15 additions & 8 deletions ...ot-external/patches/grub2/0002-loader-efi-linux-use-legacy-loader-for-broken-Intel-.patch
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
From c18ab299696dbb2fc092242e271068534ce9159c Mon Sep 17 00:00:00 2001
From 545edfcbb505dfa0fc007416dc8b69a8e65f9557 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20=C4=8Cerm=C3=A1k?= <sairon@sairon.cz>
Date: Tue, 30 Jul 2024 18:27:24 +0200
Subject: [PATCH 1/1] loader/efi/linux: use legacy loader for broken Intel NM10
Subject: [PATCH] loader/efi/linux: use legacy loader for broken Intel NM10
platforms
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Expand All @@ -23,13 +23,19 @@ that can not use the legacy loader, causing any unexpected failures.
[1] https://lists.gnu.org/archive/html/grub-devel/2024-05/msg00117.html
[2] https://lists.gnu.org/archive/html/grub-devel/2024-07/msg00009.html

----

Also AMD GX-212JC in HP t520 seems to be affected as reported in [3].

[3] https://github.com/home-assistant/operating-system/issues/3557

Signed-off-by: Jan Čermák <sairon@sairon.cz>
---
grub-core/loader/efi/linux.c | 65 +++++++++++++++++++++++++++++++++++-
1 file changed, 64 insertions(+), 1 deletion(-)
grub-core/loader/efi/linux.c | 66 +++++++++++++++++++++++++++++++++++-
1 file changed, 65 insertions(+), 1 deletion(-)

diff --git a/grub-core/loader/efi/linux.c b/grub-core/loader/efi/linux.c
index bfbd95aee..f4fc6d25c 100644
index bfbd95aee..efeb692f8 100644
--- a/grub-core/loader/efi/linux.c
+++ b/grub-core/loader/efi/linux.c
@@ -24,6 +24,7 @@
Expand All @@ -40,7 +46,7 @@ index bfbd95aee..f4fc6d25c 100644
#include <grub/types.h>
#include <grub/efi/efi.h>
#include <grub/efi/fdtload.h>
@@ -452,6 +453,67 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
@@ -452,6 +453,68 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
return grub_errno;
}

Expand Down Expand Up @@ -90,7 +96,8 @@ index bfbd95aee..f4fc6d25c 100644
+ * false positives instead).
+ */
+ return (processor_id == 0xbfebfbff00030661 // D2xxx/N2xxx
+ || processor_id == 0xbfebfbff000106ca); // D525
+ || processor_id == 0xbfebfbff000106ca // D525
+ || processor_id == 0x00730f01178bfbff); // AMD GX-212JC (HP t520)
+ }
+ else
+ {
Expand All @@ -108,7 +115,7 @@ index bfbd95aee..f4fc6d25c 100644
static grub_err_t
grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
@@ -490,7 +552,8 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
@@ -490,7 +553,8 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),

kernel_size = grub_file_size (file);

Expand Down