grub: Backport fix to work with new binutils

New versions of binutils caused object files to be 128MB in size,
backporting this fix reduced them back to a sensible size, e.g.
1024 bytes. This avoids initramfix size issues!

(From OE-Core rev: b72b9e81268719436e4bad5062cb0e1781da0395)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/grub/files/6643507ce30f775008e093580f0c9499dfb2c485.patch

@@ -0,0 +1,47 @@
+From 6643507ce30f775008e093580f0c9499dfb2c485 Mon Sep 17 00:00:00 2001
+From: Simon Hardy <simon.hardy@itdev.co.uk>
+Date: Tue, 24 Mar 2020 13:29:12 +0000
+Subject: build: Fix GRUB i386-pc build with Ubuntu gcc
+
+With recent versions of gcc on Ubuntu a very large lzma_decompress.img file is
+output. (e.g. 134479600 bytes instead of 2864.) This causes grub-mkimage to
+fail with: "error: Decompressor is too big."
+
+This seems to be caused by a section .note.gnu.property that is placed at an
+offset such that objcopy needs to pad the img file with zeros.
+
+This issue is present on:
+Ubuntu 19.10 with gcc (Ubuntu 8.3.0-26ubuntu1~19.10) 8.3.0
+Ubuntu 19.10 with gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008
+
+This issue is not present on:
+Ubuntu 19.10 with gcc (Ubuntu 7.5.0-3ubuntu1~19.10) 7.5.0
+RHEL 8.0 with gcc 8.3.1 20190507 (Red Hat 8.3.1-4)
+
+The issue can be fixed by removing the section using objcopy as shown in
+this patch.
+
+Signed-off-by: Simon Hardy <simon.hardy@itdev.co.uk>
+Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
+---
+ gentpl.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+Upstream-Status: Backport
+
+diff --git a/gentpl.py b/gentpl.py
+index 387588c05..c86550d4f 100644
+--- a/gentpl.py
++++ b/gentpl.py
+@@ -766,7 +766,7 @@ def image(defn, platform):
+ if test x$(TARGET_APPLE_LINKER) = x1; then \
+   $(MACHO2IMG) $< $@; \
+ else \
+-  $(TARGET_OBJCOPY) $(""" + cname(defn) + """_OBJCOPYFLAGS) --strip-unneeded -R .note -R .comment -R .note.gnu.build-id -R .MIPS.abiflags -R .reginfo -R .rel.dyn -R .note.gnu.gold-version -R .ARM.exidx $< $@; \
++  $(TARGET_OBJCOPY) $(""" + cname(defn) + """_OBJCOPYFLAGS) --strip-unneeded -R .note -R .comment -R .note.gnu.build-id -R .MIPS.abiflags -R .reginfo -R .rel.dyn -R .note.gnu.gold-version -R .note.gnu.property -R .ARM.exidx $< $@; \
+ fi
+ """)
+ 
+-- 
+cgit v1.2.1
+

meta/recipes-bsp/grub/grub2.inc

@@ -27,6 +27,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \
            file://script-Remove-unused-fields-from-grub_script_functio.patch \
            file://CVE-2020-15706-script-Avoid-a-use-after-free-when-redefining-a-func.patch \
            file://CVE-2020-15707-linux-Fix-integer-overflows-in-initrd-size-handling.patch \
+           file://6643507ce30f775008e093580f0c9499dfb2c485.patch \
            file://determinism.patch \
 "
 SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934"