#!/bin/sh # SPDX-License-Identifier: GPL-2.0-or-later # # Copyright (C) 2017 Imagination Technologies # Author: Paul Burton <paul.burton@mips.com> # # This script merges configuration fragments for boards supported by the # generic MIPS kernel. It checks each for requirements specified using # formatted comments, and then calls merge_config.sh to merge those # fragments which have no unmet requirements. # # An example of requirements in your board config fragment might be: # # # require CONFIG_CPU_MIPS32_R2=y # # require CONFIG_CPU_LITTLE_ENDIAN=y # # This would mean that your board is only included in kernels which are # configured for little endian MIPS32r2 CPUs, and not for example in kernels # configured for 64 bit or big endian systems. #
# Only print Skipping... lines if the user explicitly specified BOARDS=. In the # general case it only serves to obscure the useful output about what actually # was included.
case ${boards_origin} in "command line")
print_skipped=1
;;
environment*)
print_skipped=1
;;
*)
print_skipped=0
;;
esac
for board in $@; do
board_cfg="${srctree}/arch/mips/configs/generic/board-${board}.config" if [ ! -f "${board_cfg}" ]; then echo"WARNING: Board config '${board_cfg}' not found"
continue fi
# For each line beginning with # require, cut out the field following # it & search for that in the reference config file. If the requirement # is not found then the subshell will exit with code 1, and we'll # continue on to the next board.
grep -E '^# require ' "${board_cfg}" | \
cut -d' ' -f 3- | \ while read req; do
case ${req} in
*=y) # If we require something =y then we check that a line # containing it is present in the reference config.
grep -Eq "^${req}\$""${ref_cfg}" && continue
;;
*=n) # If we require something =n then we just invert that # check, considering the requirement met if there isn't # a line containing the value =y in the reference # config.
grep -Eq "^${req/%=n/=y}\$""${ref_cfg}" || continue
;;
*) echo"WARNING: Unhandled requirement '${req}'"
;;
esac
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