update grub to 2.14

This brings these extra changes:

* eaa3b8f0f Bump version to 2.15
* d38d6a1a9 Release 2.14
* 35bfd6c47 build: Add grub-core/tests/crypto_cipher_mode_vectors.h file to EXTRA_DIST
* ac042f3f5 configure: Print a more helpful error if autoconf-archive is not installed
* e37d02158 kern/ieee1275/openfw: Add a check for invalid partition number
* f94eae0f8 grub-mkimage: Do not generate empty SBAT metadata
* 1aa0dd0c0 configure: Defer check for -mcmodel=large until PIC/PIE checks are done
* ff1edd975 util/grub-mkimagexx: Stop generating unaligned appended signatures
* 51ebc6f67 tests: Add functional tests for ecb/cbc helpers
* caaf50b9a osdep/aros/hostdisk: Fix use-after-free bug during MsgPort deletion
* 18f08826f kern/efi/sb: Enable loading GRUB_FILE_TYPE_CRYPTODISK_ENCRYPTION_KEY and GRUB_FILE_TYPE_CRYPTODISK_DETACHED_HEADER

NOTE: This patch was reversed:

* ac042f3f5 configure: Print a more helpful error if autoconf-archive is not installed

Because it quite unhelpfully broke the build.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/config/grub/default/patches/0008-Revert-configure-Check-linker-for-image-base-support.patch b/config/grub/default/patches/0008-Revert-configure-Check-linker-for-image-base-support.patch
new file mode 100644
index 00000000..a29b2583
--- /dev/null
+++ b/config/grub/default/patches/0008-Revert-configure-Check-linker-for-image-base-support.patch
@@ -0,0 +1,69 @@
+From 52de4ac46b4d384a271d18c33238313334def5bc Mon Sep 17 00:00:00 2001
+From: Leah Rowe <leah@libreboot.org>
+Date: Wed, 24 Dec 2025 01:42:17 +0100
+Subject: [PATCH 8/8] Revert "configure: Check linker for --image-base support"
+
+This reverts commit 1a5417f39a0ccefcdd5440f2a67f84d2d2e26960.
+---
+ acinclude.m4 |  5 -----
+ configure.ac | 14 ++------------
+ 2 files changed, 2 insertions(+), 17 deletions(-)
+
+diff --git a/acinclude.m4 b/acinclude.m4
+index 70c1912f8..fa7840f09 100644
+--- a/acinclude.m4
++++ b/acinclude.m4
+@@ -79,11 +79,6 @@ AC_DEFUN([grub_PROG_OBJCOPY_ABSOLUTE],
+ [AC_MSG_CHECKING([whether ${TARGET_OBJCOPY} works for absolute addresses])
+ AC_CACHE_VAL(grub_cv_prog_objcopy_absolute,
+ [cat > conftest.c <<\EOF
+-asm (
+-    ".globl start, _start, __start\n"
+-    ".ifdef cmain; .set start = _start = __start = cmain\n.endif\n"
+-    ".ifdef _cmain; .set start = _start = __start = _cmain\n.endif\n"
+-);
+ void cmain (void);
+ void
+ cmain (void)
+diff --git a/configure.ac b/configure.ac
+index d8ca1b7c1..041cfbab4 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -1461,6 +1461,7 @@ elif test x$grub_cv_target_cc_link_format = x-mi386pe || test x$grub_cv_target_c
+   TARGET_IMG_LDSCRIPT='$(top_srcdir)'"/conf/i386-cygwin-img-ld.sc"
+   TARGET_IMG_LDFLAGS="-Wl,-T${TARGET_IMG_LDSCRIPT}"
+   TARGET_IMG_LDFLAGS_AC="-Wl,-T${srcdir}/conf/i386-cygwin-img-ld.sc"
++  TARGET_IMG_BASE_LDOPT="-Wl,-Ttext"
+   TARGET_IMG_CFLAGS=
+ else
+   TARGET_APPLE_LINKER=0
+@@ -1468,6 +1469,7 @@ else
+   TARGET_IMG_LDSCRIPT=
+   TARGET_IMG_LDFLAGS='-Wl,-N'
+   TARGET_IMG_LDFLAGS_AC='-Wl,-N'
++  TARGET_IMG_BASE_LDOPT="-Wl,-Ttext"
+   TARGET_IMG_CFLAGS=
+ fi
+ 
+@@ -1798,18 +1800,6 @@ grub_PROG_TARGET_CC
+ m4_ifndef([AX_CHECK_LINK_FLAG], [m4_fatal([autoconf-archive is missing. You must install it to generate the configure script.])])
+ 
+ if test "x$TARGET_APPLE_LINKER" != x1 ; then
+-AX_CHECK_LINK_FLAG([-Wl,--image-base,0x400000],
+-    [TARGET_IMG_BASE_LDOPT="-Wl,--image-base"],
+-    [TARGET_IMG_BASE_LDOPT="-Wl,-Ttext"],
+-    [],
+-    [AC_LANG_SOURCE([
+-asm (".globl start; start:");
+-asm (".globl _start; _start:");
+-asm (".globl __start; __start:");
+-void __main (void);
+-void __main (void) {}
+-int main (void);
+-    ])])
+ grub_PROG_OBJCOPY_ABSOLUTE
+ fi
+ grub_PROG_LD_BUILD_ID_NONE
+-- 
+2.47.3
+