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