3 # Copyright (C) 2017 Imagination Technologies
4 # Author: Paul Burton <paul.burton@mips.com>
6 # This program is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License as published by the
8 # Free Software Foundation; either version 2 of the License, or (at your
9 # option) any later version.
11 # This script merges configuration fragments for boards supported by the
12 # generic MIPS kernel. It checks each for requirements specified using
13 # formatted comments, and then calls merge_config.sh to merge those
14 # fragments which have no unmet requirements.
16 # An example of requirements in your board config fragment might be:
18 # # require CONFIG_CPU_MIPS32_R2=y
19 # # require CONFIG_CPU_LITTLE_ENDIAN=y
21 # This would mean that your board is only included in kernels which are
22 # configured for little endian MIPS32r2 CPUs, and not for example in kernels
23 # configured for 64 bit or big endian systems.
33 # Only print Skipping... lines if the user explicitly specified BOARDS=. In the
34 # general case it only serves to obscure the useful output about what actually
36 case ${boards_origin} in
49 board_cfg="${srctree}/arch/mips/configs/generic/board-${board}.config"
50 if [ ! -f "${board_cfg}" ]; then
51 echo "WARNING: Board config '${board_cfg}' not found"
55 # For each line beginning with # require, cut out the field following
56 # it & search for that in the reference config file. If the requirement
57 # is not found then the subshell will exit with code 1, and we'll
58 # continue on to the next board.
59 grep -E '^# require ' "${board_cfg}" | \
64 # If we require something =y then we check that a line
65 # containing it is present in the reference config.
66 grep -Eq "^${req}\$" "${ref_cfg}" && continue
69 # If we require something =n then we just invert that
70 # check, considering the requirement met if there isn't
71 # a line containing the value =y in the reference
73 grep -Eq "^${req/%=n/=y}\$" "${ref_cfg}" || continue
76 echo "WARNING: Unhandled requirement '${req}'"
80 [ ${print_skipped} -eq 1 ] && echo "Skipping ${board_cfg}"
84 # Merge this board config fragment into our final config file
85 ${srctree}/scripts/kconfig/merge_config.sh \
86 -m -O ${objtree} ${cfg} ${board_cfg} \
87 | grep -Ev '^(#|Using)'