diff --git a/toolchain.inc b/toolchain.inc
index 640c793901..2289b78b73 100644
--- a/toolchain.inc
+++ b/toolchain.inc
@@ -57,6 +57,7 @@ ARCHDIR-arm	:= arm
 ARCHDIR-arm64	:= arm64
 ARCHDIR-riscv	:= riscv
 ARCHDIR-mips	:= mips
+ARCHDIR-power8	:= power8
 
 CFLAGS_arm	+=
 CFLAGS_arm64	+= -mgeneral-regs-only
@@ -64,6 +65,7 @@ CFLAGS_mips	+= -mips32r2 -G 0 -mno-abicalls -fno-pic
 CFLAGS_riscv	+=
 CFLAGS_x86_32	+=
 CFLAGS_x86_64	+= -mcmodel=large -mno-red-zone
+CFLAGS_power8	+=
 
 # Some boards only provide 2K stacks, so storing lots of data there leads to
 # problems. Since C rules don't allow us to statically determine the maximum
@@ -82,6 +84,7 @@ CFLAGS_arm	+= -Wstack-usage=1536
 CFLAGS_arm64	+= -Wstack-usage=1536
 CFLAGS_mips	+= -Wstack-usage=1536
 CFLAGS_riscv	+= -Wstack-usage=1536
+CFLAGS_power8	+= -Wstack-usage=1536
 
 toolchain_to_dir = \
 	$(foreach arch,$(ARCH_SUPPORTED),\