1*4882a593Smuzhiyun#!/bin/sh 2*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0-or-later 3*4882a593Smuzhiyun# 4*4882a593Smuzhiyun# Copyright (C) 2017 Imagination Technologies 5*4882a593Smuzhiyun# Author: Paul Burton <paul.burton@mips.com> 6*4882a593Smuzhiyun# 7*4882a593Smuzhiyun# This script merges configuration fragments for boards supported by the 8*4882a593Smuzhiyun# generic MIPS kernel. It checks each for requirements specified using 9*4882a593Smuzhiyun# formatted comments, and then calls merge_config.sh to merge those 10*4882a593Smuzhiyun# fragments which have no unmet requirements. 11*4882a593Smuzhiyun# 12*4882a593Smuzhiyun# An example of requirements in your board config fragment might be: 13*4882a593Smuzhiyun# 14*4882a593Smuzhiyun# # require CONFIG_CPU_MIPS32_R2=y 15*4882a593Smuzhiyun# # require CONFIG_CPU_LITTLE_ENDIAN=y 16*4882a593Smuzhiyun# 17*4882a593Smuzhiyun# This would mean that your board is only included in kernels which are 18*4882a593Smuzhiyun# configured for little endian MIPS32r2 CPUs, and not for example in kernels 19*4882a593Smuzhiyun# configured for 64 bit or big endian systems. 20*4882a593Smuzhiyun# 21*4882a593Smuzhiyun 22*4882a593Smuzhiyunsrctree="$1" 23*4882a593Smuzhiyunobjtree="$2" 24*4882a593Smuzhiyunref_cfg="$3" 25*4882a593Smuzhiyuncfg="$4" 26*4882a593Smuzhiyunboards_origin="$5" 27*4882a593Smuzhiyunshift 5 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun# Only print Skipping... lines if the user explicitly specified BOARDS=. In the 30*4882a593Smuzhiyun# general case it only serves to obscure the useful output about what actually 31*4882a593Smuzhiyun# was included. 32*4882a593Smuzhiyuncase ${boards_origin} in 33*4882a593Smuzhiyun"command line") 34*4882a593Smuzhiyun print_skipped=1 35*4882a593Smuzhiyun ;; 36*4882a593Smuzhiyunenvironment*) 37*4882a593Smuzhiyun print_skipped=1 38*4882a593Smuzhiyun ;; 39*4882a593Smuzhiyun*) 40*4882a593Smuzhiyun print_skipped=0 41*4882a593Smuzhiyun ;; 42*4882a593Smuzhiyunesac 43*4882a593Smuzhiyun 44*4882a593Smuzhiyunfor board in $@; do 45*4882a593Smuzhiyun board_cfg="${srctree}/arch/mips/configs/generic/board-${board}.config" 46*4882a593Smuzhiyun if [ ! -f "${board_cfg}" ]; then 47*4882a593Smuzhiyun echo "WARNING: Board config '${board_cfg}' not found" 48*4882a593Smuzhiyun continue 49*4882a593Smuzhiyun fi 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun # For each line beginning with # require, cut out the field following 52*4882a593Smuzhiyun # it & search for that in the reference config file. If the requirement 53*4882a593Smuzhiyun # is not found then the subshell will exit with code 1, and we'll 54*4882a593Smuzhiyun # continue on to the next board. 55*4882a593Smuzhiyun grep -E '^# require ' "${board_cfg}" | \ 56*4882a593Smuzhiyun cut -d' ' -f 3- | \ 57*4882a593Smuzhiyun while read req; do 58*4882a593Smuzhiyun case ${req} in 59*4882a593Smuzhiyun *=y) 60*4882a593Smuzhiyun # If we require something =y then we check that a line 61*4882a593Smuzhiyun # containing it is present in the reference config. 62*4882a593Smuzhiyun grep -Eq "^${req}\$" "${ref_cfg}" && continue 63*4882a593Smuzhiyun ;; 64*4882a593Smuzhiyun *=n) 65*4882a593Smuzhiyun # If we require something =n then we just invert that 66*4882a593Smuzhiyun # check, considering the requirement met if there isn't 67*4882a593Smuzhiyun # a line containing the value =y in the reference 68*4882a593Smuzhiyun # config. 69*4882a593Smuzhiyun grep -Eq "^${req/%=n/=y}\$" "${ref_cfg}" || continue 70*4882a593Smuzhiyun ;; 71*4882a593Smuzhiyun *) 72*4882a593Smuzhiyun echo "WARNING: Unhandled requirement '${req}'" 73*4882a593Smuzhiyun ;; 74*4882a593Smuzhiyun esac 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun [ ${print_skipped} -eq 1 ] && echo "Skipping ${board_cfg}" 77*4882a593Smuzhiyun exit 1 78*4882a593Smuzhiyun done || continue 79*4882a593Smuzhiyun 80*4882a593Smuzhiyun # Merge this board config fragment into our final config file 81*4882a593Smuzhiyun ${srctree}/scripts/kconfig/merge_config.sh \ 82*4882a593Smuzhiyun -m -O ${objtree} ${cfg} ${board_cfg} \ 83*4882a593Smuzhiyun | grep -Ev '^(#|Using)' 84*4882a593Smuzhiyundone 85