Update Makefile
Add PDK variable for simulation
diff --git a/Makefile b/Makefile
index 44d605f..6f8e5b8 100644
--- a/Makefile
+++ b/Makefile
@@ -26,6 +26,7 @@
export OPENLANE_TAG=2022.02.23_02.50.41
export MISMATCHES_OK=1
export PDKPATH?=$(PDK_ROOT)/sky130A
+export PDK?=sky130A
# Install lite version of caravel, (1): caravel-lite, (0): caravel
CARAVEL_LITE?=1
@@ -85,6 +86,7 @@
-e CARAVEL_ROOT=${CARAVEL_ROOT} \
-e TOOLS=/opt/riscv32i \
-e DESIGNS=$(TARGET_PATH) \
+ -e PDK=$(PDK) \
-e CORE_VERILOG_PATH=$(TARGET_PATH)/mgmt_core_wrapper/verilog \
-e GCC_PREFIX=riscv32-unknown-elf \
-e MCW_ROOT=$(MCW_ROOT) \
