diff --git a/meta-arm/meta-arm-toolchain/recipes-bsp/grub/grub%.bbappend b/meta-arm/meta-arm-toolchain/recipes-bsp/grub/grub%.bbappend
new file mode 100644
index 0000000..37383d4
--- /dev/null
+++ b/meta-arm/meta-arm-toolchain/recipes-bsp/grub/grub%.bbappend
@@ -0,0 +1 @@
+require ${@oe.utils.conditional('TCMODE', 'external-arm', 'grub-external-arm.inc', '', d)}
diff --git a/meta-arm/meta-arm-toolchain/recipes-bsp/grub/grub-external-arm.inc b/meta-arm/meta-arm-toolchain/recipes-bsp/grub/grub-external-arm.inc
new file mode 100644
index 0000000..dc260be
--- /dev/null
+++ b/meta-arm/meta-arm-toolchain/recipes-bsp/grub/grub-external-arm.inc
@@ -0,0 +1,5 @@
+# grub uses --target triplet to find binutils binaries such as objcopy
+# Since external-arm toolchain uses aarch64-none-linux-gnu triplet,
+# OE-defined TARGET_SYS differs from EAT_TARGET_SYS used by external-arm
+# toolchain, grub needs passing the correct --target to configure script
+CONFIGUREOPTS:append:class-target = " --target=${EAT_TARGET_SYS}"