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boot/arm-trusted-firmware: fix build issue with binutils 2.39+

PATCH Superseded Heiko Thiery 1 participant 1 message Jul 10, 2023

v1 of 2 Superseded Latest is v2 →

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PATCH 1/1 boot/arm-trusted-firmware: fix build issue with binutils 2.39+

The new version of binutils introduces a new warning when linking. The new warninng is enabled by default. To fix the issue this warning is disabled by adding the patches to the arm-trusted-firmware package v{2.2..2.8}. This is a backport of an upstream commit [1]

[1] https://github.com/ARM-software/arm-trusted-firmware/commit/1f49db5f25cdd4e43825c9bcc0575070b80f628c

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/4603996186
https://gitlab.com/buildroot.org/buildroot/-/jobs/4603996189

Cc Dario Binacchi <[email protected]>
Cc Romain Naour <[email protected]>
---
 ...-add-support-for-new-binutils-versio.patch | 58 +++++++++++++++++
 ...dd-support-for-new-binutils-versions.patch | 62 +++++++++++++++++++
 ...dd-support-for-new-binutils-versions.patch | 62 +++++++++++++++++++
 ...dd-support-for-new-binutils-versions.patch | 62 +++++++++++++++++++
 ...dd-support-for-new-binutils-versions.patch | 62 +++++++++++++++++++
 ...dd-support-for-new-binutils-versions.patch | 62 +++++++++++++++++++
 ...dd-support-for-new-binutils-versions.patch | 62 +++++++++++++++++++
 7 files changed, 430 insertions(+)
 create mode 100644 boot/arm-trusted-firmware/v2.2/0001-PATCH-feat-build-add-support-for-new-binutils-versio.patch
 create mode 100644 boot/arm-trusted-firmware/v2.3/0001-feat-build-add-support-for-new-binutils-versions.patch
 create mode 100644 boot/arm-trusted-firmware/v2.4/0001-feat-build-add-support-for-new-binutils-versions.patch
 create mode 100644 boot/arm-trusted-firmware/v2.5/0001-feat-build-add-support-for-new-binutils-versions.patch
 create mode 100644 boot/arm-trusted-firmware/v2.6/0001-feat-build-add-support-for-new-binutils-versions.patch
 create mode 100644 boot/arm-trusted-firmware/v2.7/0001-feat-build-add-support-for-new-binutils-versions.patch
 create mode 100644 boot/arm-trusted-firmware/v2.8/0001-feat-build-add-support-for-new-binutils-versions.patch
boot/arm-trusted-firmware/v2.2/0001-PATCH-feat-build-add-support-for-new-binutils-versio.patch new file +58 -0
new file mode 100644
index 0000000000..2375de0eef
@@ -0,0 +1,58 @@
+From 5e1beb793c06352e87c46eca1144ff1fe8555103 Mon Sep 17 00:00:00 2001
+From: Heiko Thiery <[email protected]>
+Date: Mon, 10 Jul 2023 10:43:03 +0200
+Subject: [PATCH] [PATCH] feat(build): add support for new binutils versions
+
+Users of GNU ld (BPF) from binutils 2.39+ will observe multiple instaces
+of a new warning when linking the bl*.elf in the form:
+
+  ld.bfd: warning: stm32mp1_helper.o: missing .note.GNU-stack section implies executable stack
+  ld.bfd: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
+  ld.bfd: warning: bl2.elf has a LOAD segment with RWX permissions
+  ld.bfd: warning: bl32.elf has a LOAD segment with RWX permissions
+
+These new warnings are enbaled by default to secure elf binaries:
+ - https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=ba951afb99912da01a6e8434126b8fac7aa75107
+ - https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=0d38576a34ec64a1b4500c9277a8e9d0f07e6774
+
+Fix it in a similar way to what the Linux kernel does, see:
+https://lore.kernel.org/all/[email protected]/
+
+Following the reasoning there, we set "-z noexecstack" for all linkers
+(although LLVM's LLD defaults to it) and optional add
+--no-warn-rwx-segments since this a ld.bfd related.
+
+Signed-off-by: Marco Felsch <[email protected]>
+Signed-off-by: Robert Schwebel <[email protected]>
+Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617
+
+Signed-off-by: Heiko Thiery <[email protected]>
+---
+ Makefile | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 721246d51..5893cf422 100644
+--- a/Makefile
++++ b/Makefile
+@@ -297,11 +297,16 @@ endif
+ 
+ GCC_V_OUTPUT		:=	$(shell $(CC) -v 2>&1)
+ 
++TF_LDFLAGS              +=      -z noexecstack
++
+ ifneq ($(findstring armlink,$(notdir $(LD))),)
+ TF_LDFLAGS		+=	--diag_error=warning --lto_level=O1
+ TF_LDFLAGS		+=	--remove --info=unused,unusedsymbols
+ else
+-TF_LDFLAGS		+=	--fatal-warnings -O1
++# With ld.bfd version 2.39 and newer new warnings are added. Skip those since we
++# are not loaded by a elf loader.
++TF_LDFLAGS              +=      $(call ld_option, --no-warn-rwx-segments)
++TF_LDFLAGS              +=      -O1
+ TF_LDFLAGS		+=	--gc-sections
+ endif
+ TF_LDFLAGS		+=	$(TF_LDFLAGS_$(ARCH))
+-- 
+2.30.2
+
boot/arm-trusted-firmware/v2.3/0001-feat-build-add-support-for-new-binutils-versions.patch new file +62 -0

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boot/arm-trusted-firmware/v2.4/0001-feat-build-add-support-for-new-binutils-versions.patch new file +62 -0

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boot/arm-trusted-firmware/v2.5/0001-feat-build-add-support-for-new-binutils-versions.patch new file +62 -0

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boot/arm-trusted-firmware/v2.6/0001-feat-build-add-support-for-new-binutils-versions.patch new file +62 -0

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boot/arm-trusted-firmware/v2.7/0001-feat-build-add-support-for-new-binutils-versions.patch new file +62 -0

62 lines not on this page · raw message

boot/arm-trusted-firmware/v2.8/0001-feat-build-add-support-for-new-binutils-versions.patch new file +62 -0

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Signature · 6 lines
2.30.2

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