Initial commit: OpenHarmony-v4.0-ReleaseOpenHarmony-v4.0-Release

1 files changed, 84 insertions, 0 deletions

diff --git a/arch/mips/tools/generic-board-config.sh b/arch/mips/tools/generic-board-config.sh
new file mode 100755
index 000000000..dfa5f31f5
--- /dev/null
+++ b/arch/mips/tools/generic-board-config.sh
@@ -0,0 +1,84 @@
+#!/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.
+#
+
+srctree="$1"
+objtree="$2"
+ref_cfg="$3"
+cfg="$4"
+boards_origin="$5"
+shift 5
+
+# 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
+
+                [ ${print_skipped} -eq 1 ] && echo "Skipping ${board_cfg}"
+                exit 1
+        done || continue
+
+        # Merge this board config fragment into our final config file
+        ${srctree}/scripts/kconfig/merge_config.sh \
+                -m -O ${objtree} ${cfg} ${board_cfg} \
+                | grep -Ev '^(#|Using)'
+done