[Buildroot] [git commit] boot/arm-trusted-firmware: fix build issue with binutils 2.39+

Yann E. MORIN yann.morin.1998 at free.fr
Mon Jul 10 21:39:18 UTC 2023


commit: https://git.buildroot.net/buildroot/commit/?id=7b774048be6292bb61f90759ad3b7b58a33a1650
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master

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]

Since there are too many defconfigs that use the arm-trusted-firmware
package, it is not practical to create a global-patch-dir for all of them.
Therefore the patches are only in the package directory.

[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: Yann E. MORIN <yann.morin.1998 at free.fr>
Cc: Dario Binacchi <dario.binacchi at amarulasolutions.com>
Cc: Romain Naour <romain.naour at smile.fr>
Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
Reviewed-by: Giulio Benetti <giulio.benetti at benettiengineering.com>
Tested-by: Giulio Benetti <giulio.benetti at benettiengineering.com>
[yann.morin.1998 at free.fr: add proper Upstream: tags]
Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
---
 ...build-add-support-for-new-binutils-versio.patch | 59 +++++++++++++++++++++
 ...ild-add-support-for-new-binutils-versions.patch | 61 ++++++++++++++++++++++
 ...ild-add-support-for-new-binutils-versions.patch | 61 ++++++++++++++++++++++
 ...ild-add-support-for-new-binutils-versions.patch | 61 ++++++++++++++++++++++
 ...ild-add-support-for-new-binutils-versions.patch | 61 ++++++++++++++++++++++
 ...ild-add-support-for-new-binutils-versions.patch | 61 ++++++++++++++++++++++
 ...ild-add-support-for-new-binutils-versions.patch | 61 ++++++++++++++++++++++
 7 files changed, 425 insertions(+)

diff --git a/boot/arm-trusted-firmware/v2.2/0001-PATCH-feat-build-add-support-for-new-binutils-versio.patch b/boot/arm-trusted-firmware/v2.2/0001-PATCH-feat-build-add-support-for-new-binutils-versio.patch
new file mode 100644
index 0000000000..d4d2b068f3
--- /dev/null
+++ b/boot/arm-trusted-firmware/v2.2/0001-PATCH-feat-build-add-support-for-new-binutils-versio.patch
@@ -0,0 +1,59 @@
+From 5e1beb793c06352e87c46eca1144ff1fe8555103 Mon Sep 17 00:00:00 2001
+From: Heiko Thiery <heiko.thiery at gmail.com>
+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/20220810222442.2296651-1-ndesaulniers@google.com/
+
+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 <m.felsch at pengutronix.de>
+Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
+Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617
+
+Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
+Upstream: https://github.com/ARM-software/arm-trusted-firmware/commit/1f49db5f25cdd4e43825c9bcc0575070b80f628c
+---
+ 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
+
diff --git a/boot/arm-trusted-firmware/v2.3/0001-feat-build-add-support-for-new-binutils-versions.patch b/boot/arm-trusted-firmware/v2.3/0001-feat-build-add-support-for-new-binutils-versions.patch
new file mode 100644
index 0000000000..335c18553a
--- /dev/null
+++ b/boot/arm-trusted-firmware/v2.3/0001-feat-build-add-support-for-new-binutils-versions.patch
@@ -0,0 +1,61 @@
+From 0f75b03c008eacb9818af3a56dc088e72a623d17 Mon Sep 17 00:00:00 2001
+From: Marco Felsch <m.felsch at pengutronix.de>
+Date: Wed, 9 Nov 2022 12:59:09 +0100
+Subject: [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/20220810222442.2296651-1-ndesaulniers@google.com/
+
+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 <m.felsch at pengutronix.de>
+Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
+Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617
+Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
+Upstream: https://github.com/ARM-software/arm-trusted-firmware/commit/1f49db5f25cdd4e43825c9bcc0575070b80f628c
+---
+ Makefile | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 1ddb7b844..470956b19 100644
+--- a/Makefile
++++ b/Makefile
+@@ -416,6 +416,8 @@ endif
+ 
+ GCC_V_OUTPUT		:=	$(shell $(CC) -v 2>&1)
+ 
++TF_LDFLAGS		+=	-z noexecstack
++
+ # LD = armlink
+ ifneq ($(findstring armlink,$(notdir $(LD))),)
+ TF_LDFLAGS		+=	--diag_error=warning --lto_level=O1
+@@ -442,7 +444,10 @@ TF_LDFLAGS		+=	$(subst --,-Xlinker --,$(TF_LDFLAGS_$(ARCH)))
+ 
+ # LD = gcc-ld (ld) or llvm-ld (ld.lld) or other
+ 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
+ # ld.lld doesn't recognize the errata flags,
+ # therefore don't add those in that case
+-- 
+2.30.2
+
diff --git a/boot/arm-trusted-firmware/v2.4/0001-feat-build-add-support-for-new-binutils-versions.patch b/boot/arm-trusted-firmware/v2.4/0001-feat-build-add-support-for-new-binutils-versions.patch
new file mode 100644
index 0000000000..335c18553a
--- /dev/null
+++ b/boot/arm-trusted-firmware/v2.4/0001-feat-build-add-support-for-new-binutils-versions.patch
@@ -0,0 +1,61 @@
+From 0f75b03c008eacb9818af3a56dc088e72a623d17 Mon Sep 17 00:00:00 2001
+From: Marco Felsch <m.felsch at pengutronix.de>
+Date: Wed, 9 Nov 2022 12:59:09 +0100
+Subject: [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/20220810222442.2296651-1-ndesaulniers@google.com/
+
+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 <m.felsch at pengutronix.de>
+Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
+Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617
+Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
+Upstream: https://github.com/ARM-software/arm-trusted-firmware/commit/1f49db5f25cdd4e43825c9bcc0575070b80f628c
+---
+ Makefile | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 1ddb7b844..470956b19 100644
+--- a/Makefile
++++ b/Makefile
+@@ -416,6 +416,8 @@ endif
+ 
+ GCC_V_OUTPUT		:=	$(shell $(CC) -v 2>&1)
+ 
++TF_LDFLAGS		+=	-z noexecstack
++
+ # LD = armlink
+ ifneq ($(findstring armlink,$(notdir $(LD))),)
+ TF_LDFLAGS		+=	--diag_error=warning --lto_level=O1
+@@ -442,7 +444,10 @@ TF_LDFLAGS		+=	$(subst --,-Xlinker --,$(TF_LDFLAGS_$(ARCH)))
+ 
+ # LD = gcc-ld (ld) or llvm-ld (ld.lld) or other
+ 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
+ # ld.lld doesn't recognize the errata flags,
+ # therefore don't add those in that case
+-- 
+2.30.2
+
diff --git a/boot/arm-trusted-firmware/v2.5/0001-feat-build-add-support-for-new-binutils-versions.patch b/boot/arm-trusted-firmware/v2.5/0001-feat-build-add-support-for-new-binutils-versions.patch
new file mode 100644
index 0000000000..335c18553a
--- /dev/null
+++ b/boot/arm-trusted-firmware/v2.5/0001-feat-build-add-support-for-new-binutils-versions.patch
@@ -0,0 +1,61 @@
+From 0f75b03c008eacb9818af3a56dc088e72a623d17 Mon Sep 17 00:00:00 2001
+From: Marco Felsch <m.felsch at pengutronix.de>
+Date: Wed, 9 Nov 2022 12:59:09 +0100
+Subject: [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/20220810222442.2296651-1-ndesaulniers@google.com/
+
+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 <m.felsch at pengutronix.de>
+Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
+Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617
+Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
+Upstream: https://github.com/ARM-software/arm-trusted-firmware/commit/1f49db5f25cdd4e43825c9bcc0575070b80f628c
+---
+ Makefile | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 1ddb7b844..470956b19 100644
+--- a/Makefile
++++ b/Makefile
+@@ -416,6 +416,8 @@ endif
+ 
+ GCC_V_OUTPUT		:=	$(shell $(CC) -v 2>&1)
+ 
++TF_LDFLAGS		+=	-z noexecstack
++
+ # LD = armlink
+ ifneq ($(findstring armlink,$(notdir $(LD))),)
+ TF_LDFLAGS		+=	--diag_error=warning --lto_level=O1
+@@ -442,7 +444,10 @@ TF_LDFLAGS		+=	$(subst --,-Xlinker --,$(TF_LDFLAGS_$(ARCH)))
+ 
+ # LD = gcc-ld (ld) or llvm-ld (ld.lld) or other
+ 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
+ # ld.lld doesn't recognize the errata flags,
+ # therefore don't add those in that case
+-- 
+2.30.2
+
diff --git a/boot/arm-trusted-firmware/v2.6/0001-feat-build-add-support-for-new-binutils-versions.patch b/boot/arm-trusted-firmware/v2.6/0001-feat-build-add-support-for-new-binutils-versions.patch
new file mode 100644
index 0000000000..335c18553a
--- /dev/null
+++ b/boot/arm-trusted-firmware/v2.6/0001-feat-build-add-support-for-new-binutils-versions.patch
@@ -0,0 +1,61 @@
+From 0f75b03c008eacb9818af3a56dc088e72a623d17 Mon Sep 17 00:00:00 2001
+From: Marco Felsch <m.felsch at pengutronix.de>
+Date: Wed, 9 Nov 2022 12:59:09 +0100
+Subject: [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/20220810222442.2296651-1-ndesaulniers@google.com/
+
+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 <m.felsch at pengutronix.de>
+Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
+Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617
+Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
+Upstream: https://github.com/ARM-software/arm-trusted-firmware/commit/1f49db5f25cdd4e43825c9bcc0575070b80f628c
+---
+ Makefile | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 1ddb7b844..470956b19 100644
+--- a/Makefile
++++ b/Makefile
+@@ -416,6 +416,8 @@ endif
+ 
+ GCC_V_OUTPUT		:=	$(shell $(CC) -v 2>&1)
+ 
++TF_LDFLAGS		+=	-z noexecstack
++
+ # LD = armlink
+ ifneq ($(findstring armlink,$(notdir $(LD))),)
+ TF_LDFLAGS		+=	--diag_error=warning --lto_level=O1
+@@ -442,7 +444,10 @@ TF_LDFLAGS		+=	$(subst --,-Xlinker --,$(TF_LDFLAGS_$(ARCH)))
+ 
+ # LD = gcc-ld (ld) or llvm-ld (ld.lld) or other
+ 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
+ # ld.lld doesn't recognize the errata flags,
+ # therefore don't add those in that case
+-- 
+2.30.2
+
diff --git a/boot/arm-trusted-firmware/v2.7/0001-feat-build-add-support-for-new-binutils-versions.patch b/boot/arm-trusted-firmware/v2.7/0001-feat-build-add-support-for-new-binutils-versions.patch
new file mode 100644
index 0000000000..335c18553a
--- /dev/null
+++ b/boot/arm-trusted-firmware/v2.7/0001-feat-build-add-support-for-new-binutils-versions.patch
@@ -0,0 +1,61 @@
+From 0f75b03c008eacb9818af3a56dc088e72a623d17 Mon Sep 17 00:00:00 2001
+From: Marco Felsch <m.felsch at pengutronix.de>
+Date: Wed, 9 Nov 2022 12:59:09 +0100
+Subject: [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/20220810222442.2296651-1-ndesaulniers@google.com/
+
+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 <m.felsch at pengutronix.de>
+Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
+Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617
+Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
+Upstream: https://github.com/ARM-software/arm-trusted-firmware/commit/1f49db5f25cdd4e43825c9bcc0575070b80f628c
+---
+ Makefile | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 1ddb7b844..470956b19 100644
+--- a/Makefile
++++ b/Makefile
+@@ -416,6 +416,8 @@ endif
+ 
+ GCC_V_OUTPUT		:=	$(shell $(CC) -v 2>&1)
+ 
++TF_LDFLAGS		+=	-z noexecstack
++
+ # LD = armlink
+ ifneq ($(findstring armlink,$(notdir $(LD))),)
+ TF_LDFLAGS		+=	--diag_error=warning --lto_level=O1
+@@ -442,7 +444,10 @@ TF_LDFLAGS		+=	$(subst --,-Xlinker --,$(TF_LDFLAGS_$(ARCH)))
+ 
+ # LD = gcc-ld (ld) or llvm-ld (ld.lld) or other
+ 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
+ # ld.lld doesn't recognize the errata flags,
+ # therefore don't add those in that case
+-- 
+2.30.2
+
diff --git a/boot/arm-trusted-firmware/v2.8/0001-feat-build-add-support-for-new-binutils-versions.patch b/boot/arm-trusted-firmware/v2.8/0001-feat-build-add-support-for-new-binutils-versions.patch
new file mode 100644
index 0000000000..335c18553a
--- /dev/null
+++ b/boot/arm-trusted-firmware/v2.8/0001-feat-build-add-support-for-new-binutils-versions.patch
@@ -0,0 +1,61 @@
+From 0f75b03c008eacb9818af3a56dc088e72a623d17 Mon Sep 17 00:00:00 2001
+From: Marco Felsch <m.felsch at pengutronix.de>
+Date: Wed, 9 Nov 2022 12:59:09 +0100
+Subject: [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/20220810222442.2296651-1-ndesaulniers@google.com/
+
+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 <m.felsch at pengutronix.de>
+Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
+Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617
+Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
+Upstream: https://github.com/ARM-software/arm-trusted-firmware/commit/1f49db5f25cdd4e43825c9bcc0575070b80f628c
+---
+ Makefile | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 1ddb7b844..470956b19 100644
+--- a/Makefile
++++ b/Makefile
+@@ -416,6 +416,8 @@ endif
+ 
+ GCC_V_OUTPUT		:=	$(shell $(CC) -v 2>&1)
+ 
++TF_LDFLAGS		+=	-z noexecstack
++
+ # LD = armlink
+ ifneq ($(findstring armlink,$(notdir $(LD))),)
+ TF_LDFLAGS		+=	--diag_error=warning --lto_level=O1
+@@ -442,7 +444,10 @@ TF_LDFLAGS		+=	$(subst --,-Xlinker --,$(TF_LDFLAGS_$(ARCH)))
+ 
+ # LD = gcc-ld (ld) or llvm-ld (ld.lld) or other
+ 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
+ # ld.lld doesn't recognize the errata flags,
+ # therefore don't add those in that case
+-- 
+2.30.2
+



More information about the buildroot mailing list