v8a: update to OSELAS.Toolchain 2020.08.0

Update to the latest toolchain, which was released this week.

Updating to GCC 10 prompts for new kernel options:

  | CONFIG_ARM64_PTR_AUTH:
  |
  | Pointer authentication (part of the ARMv8.3 Extensions) provides
  | instructions for signing and authenticating pointers against secret
  | keys, which can be used to mitigate Return Oriented Programming (ROP)
  | and other attacks.
  |
  | This option enables these instructions at EL0 (i.e. for userspace).
  | Choosing this option will cause the kernel to initialise secret keys
  | for each process at exec() time, with these keys being
  | context-switched along with the process.
  |
  | If the compiler supports the -mbranch-protection or
  | -msign-return-address flag (e.g. GCC 7 or later), then this option
  | will also cause the kernel itself to be compiled with return address
  | protection. In this case, and if the target hardware is known to
  | support pointer authentication, then CONFIG_STACKPROTECTOR can be
  | disabled with minimal loss of protection.
  |
  | The feature is detected at runtime. If the feature is not present in
  | hardware it will not be advertised to userspace/KVM guest nor will it
  | be enabled. However, KVM guest also require VHE mode and hence
  | CONFIG_ARM64_VHE=y option to use this feature.
  |
  | If the feature is present on the boot CPU but not on a late CPU, then
  | the late CPU will be parked. Also, if the boot CPU does not have
  | address auth and the late CPU has then the late CPU will still boot
  | but with the feature disabled. On such a system, this option should
  | not be selected.
  |
  | This feature works with FUNCTION_GRAPH_TRACER option only if
  | DYNAMIC_FTRACE_WITH_REGS is enabled.

  | CONFIG_ARM64_BTI_KERNEL:
  |
  | Build the kernel with Branch Target Identification annotations
  | and enable enforcement of this for kernel code. When this option
  | is enabled and the system supports BTI all kernel code including
  | modular code must have BTI enabled.

Use their default values for enhanced security.

Signed-off-by: Roland Hieber <rhi@pengutronix.de>

2 files changed, 9 insertions, 6 deletions

diff --git a/configs/platform-v8a/kernelconfig b/configs/platform-v8a/kernelconfig
index 0f77dd0..5a2b679 100644
--- a/configs/platform-v8a/kernelconfig
+++ b/configs/platform-v8a/kernelconfig
@@ -2,10 +2,10 @@
 # Automatically generated file; DO NOT EDIT.
 # Linux/arm64 5.8 Kernel Configuration
 #
-CONFIG_CC_VERSION_TEXT="aarch64-v8a-linux-gnu-gcc (OSELAS.Toolchain-2019.09.1 9-20191130) 9.2.1 20191130"
+CONFIG_CC_VERSION_TEXT="aarch64-v8a-linux-gnu-gcc (OSELAS.Toolchain-2020.08.0 10-20200822) 10.2.1 20200822"
 CONFIG_CC_IS_GCC=y
-CONFIG_GCC_VERSION=90201
-CONFIG_LD_VERSION=232000000
+CONFIG_GCC_VERSION=100201
+CONFIG_LD_VERSION=235000000
 CONFIG_CLANG_VERSION=0
 CONFIG_CC_CAN_LINK=y
 CONFIG_CC_CAN_LINK_STATIC=y
@@ -426,9 +426,11 @@ CONFIG_ARM64_CNP=y
 #
 # ARMv8.3 architectural features
 #
+CONFIG_ARM64_PTR_AUTH=y
 CONFIG_CC_HAS_BRANCH_PROT_PAC_RET=y
 CONFIG_CC_HAS_SIGN_RETURN_ADDRESS=y
 CONFIG_AS_HAS_PAC=y
+CONFIG_AS_HAS_CFI_NEGATE_RA_STATE=y
 # end of ARMv8.3 architectural features
 
 #
@@ -441,6 +443,7 @@ CONFIG_ARM64_AMU_EXTN=y
 # ARMv8.5 architectural features
 #
 CONFIG_ARM64_BTI=y
+CONFIG_ARM64_BTI_KERNEL=y
 CONFIG_CC_HAS_BRANCH_PROT_PAC_RET_BTI=y
 CONFIG_ARM64_E0PD=y
 CONFIG_ARCH_RANDOM=y
diff --git a/configs/platform-v8a/platformconfig b/configs/platform-v8a/platformconfig
index 32e0845..4a929a0 100644
--- a/configs/platform-v8a/platformconfig
+++ b/configs/platform-v8a/platformconfig
@@ -61,11 +61,11 @@ PTXCONF_SYSROOT_CROSS="${PTXDIST_PLATFORMDIR}/sysroot-cross"
 #
 # toolchain                     
 #
-PTXCONF_CROSSCHAIN_VENDOR="OSELAS.Toolchain-2019.09"
-PTXCONF_CROSSCHAIN_CHECK="9.2.1"
+PTXCONF_CROSSCHAIN_VENDOR="OSELAS.Toolchain-2020.08"
+PTXCONF_CROSSCHAIN_CHECK="10.2.1"
 PTXCONF_LIBC_GLIBC=y
 # PTXCONF_LIBC_UCLIBC is not set
-PTXCONF_GLIBC_VERSION="2.30"
+PTXCONF_GLIBC_VERSION="2.32"
 PTXCONF_GNU_TARGET="aarch64-v8a-linux-gnu"
 PTXCONF_COMPILER_PREFIX="${PTXCONF_GNU_TARGET}-"
 PTXCONF_COMPILER_PREFIX_KERNEL="${PTXCONF_COMPILER_PREFIX}"