Add ARM architecture support to manage-config (sonic-net#146)

There are some kernel compilation options that are only supported on certain architectures, such as CONFIG_SERIAL_8250_LPSS depends on X86.

1. Split options into multiple sections for different architectures, section [common] for all architectures.
2. blacklist CONFIG_STRICT_DEVMEM for centec arm64 platform

Author: taocy001

Makefile

@@ -94,7 +94,7 @@ $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 
 	# Optionally add/remove kernel options
 	if [ -f ../manage-config ]; then
-		../manage-config amd64
+		../manage-config $(CONFIGURED_ARCH)
 	fi
 
 	# Building a custom kernel from Debian kernel source

manage-config

@@ -19,6 +19,9 @@
 # Example:
 #   CONFIG_AD5064=y
 #
+# If the option is required on all architectures, add it to the common section;
+# if the option is only relevant to a specific architecture, add it to the
+# section of the corresponding architecture.
 
 # Configuration file to change
 ARCH=amd64
@@ -29,39 +32,58 @@ case "$ARCH" in
     amd64)
         CONFIG_FILE_LOC=debian/build/build_amd64_none_amd64
         ;;
+    arm64)
+        CONFIG_FILE_LOC=debian/build/build_arm64_none_arm64
+        ;;
+    armhf)
+        CONFIG_FILE_LOC=debian/build/build_armhf_none_armmp
+        ;;
     *)
         CONFIG_FILE_LOC=debian/build/build_amd64_none_amd64
         ;;
 esac
 CONFIG_FILE=${CONFIG_FILE_LOC}/.config
 
+function get_section_opts(){
+    file=$1
+    for((i=2;i<=$#;i++));do
+        eval section=\$$i
+        opts+=$(sed -n '/^\['${section}'\]/, /^\[.*\]/p' ${file} | grep -Ev '\[.*\]|^$|[#;]')
+        opts+=$'\n'
+    done
+    echo "$opts"
+}
+
 ret=0
-if [ -e ../patch/kconfig-exclusions -o -e ../patch/kconfig-inclusions ];
-then
+exclusion_file="../patch/kconfig-exclusions"
+inclusion_file="../patch/kconfig-inclusions"
+if [ -e ${exclusion_file} -o -e ${inclusion_file} ]; then
 
     # Process any exclusions in the kernel
-    if [ -f ../patch/kconfig-exclusions ]; then
+    if [ -f ${exclusion_file} ]; then
+        exclusion_opts=$(get_section_opts ${exclusion_file} "common" ${ARCH})
         while read -r opt; do
             if [ ! -z "$opt" ] && [[ ! "$opt" =~ ^#.* ]]; then
                 scripts/config --file ${CONFIG_FILE} -d $opt
             fi
-        done < ../patch/kconfig-exclusions;
+        done <<< ${exclusion_opts};
     fi
 
     # Process any inclusions in the kernel
-    if [ -f ../patch/kconfig-inclusions ]; then
+    if [ -f ${inclusion_file} ]; then
+        inclusion_opts=$(get_section_opts ${inclusion_file} "common" ${ARCH})
         while read -r opt; do
             if [ ! -z "$opt" ] && [[ ! "$opt" =~ ^#.* ]]; then
                 echo $opt >> ${CONFIG_FILE}
             fi
-        done < ../patch/kconfig-inclusions;
+        done <<< ${inclusion_opts};
     fi
 
     # Update the .config file to be sure it's consistent
     make -C ${CONFIG_FILE_LOC} olddefconfig
 
     # Verify that the kernel options we want to remove are not in the updated configuration
-    if [ -f ../patch/kconfig-exclusions ]; then
+    if [ -f ${exclusion_file} ]; then
         echo
         echo "Checking removed kernel options..."
         while read -r opt; do
@@ -72,14 +94,14 @@ then
                     echo "Option $opt should not be set, but is set to [$s]"
                 fi
             fi
-        done < ../patch/kconfig-exclusions;
+        done <<< ${exclusion_opts};
         if [ $ret = 0 ]; then
             echo "No error"
         fi
     fi
 
     # Verify that the kernel options we want to add are now in the updated configuration
-    if [ -f ../patch/kconfig-inclusions ]; then
+    if [ -f ${inclusion_file} ]; then
         echo
         echo "Checking added kernel options..."
         while read -r opt; do
@@ -92,7 +114,7 @@ then
                     echo "Option $n should be set to [$v] instead of [$s]"
                 fi
             fi
-        done < ../patch/kconfig-inclusions;
+        done <<< ${inclusion_opts};
         if [ ! $ret = 2 ]; then
             echo "No error"
         fi

patch/kconfig-exclusions

@@ -1,4 +1,15 @@
+[common]
 # Unset X86_PAT and STRICT_DEVMEM according to Broadcom's requirement
+# Unset DEVMEN also for CENTEC arm64 arch
 CONFIG_STRICT_DEVMEM
+
+[amd64]
+# Unset X86_PAT and STRICT_DEVMEM according to Broadcom's requirement
 CONFIG_X86_PAT
 CONFIG_MLXSW_PCI
+
+[arm64]
+
+[armhf]
+
+

patch/kconfig-inclusions

@@ -1,3 +1,6 @@
+[common]
+
+[amd64]
 # Enable MAX6697 for arista 7060 cx32s
 CONFIG_SENSORS_MAX6697=m
 CONFIG_SENSORS_DPS1900=m
@@ -49,3 +52,9 @@ CONFIG_MELLANOX_PLATFORM=y
 CONFIG_MLXREG_HOTPLUG=m
 CONFIG_MLXREG_IO=m
 CONFIG_MAX1363=m
+
+[arm64]
+
+[armhf]
+
+