diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 000000000..34a145d4c
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,38 @@
+# https://editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# Traditionally, the end-of-line character has been platform-specific.
+end_of_line = unset
+
+[*.[chS]]
+indent_style = space
+max_line_length = 81
+
+[*.{awk,cmake,dfa,in,sh}]
+indent_style = space
+max_line_length = 100
+
+[*.txt]
+indent_style = space
+max_line_length = unset
+
+[{Makefile.in,ltmain.sh}]
+indent_style = unset
+insert_final_newline = unset
+max_line_length = unset
+trim_trailing_whitespace = unset
+
+[*~]
+indent_style = unset
+insert_final_newline = unset
+max_line_length = unset
+trim_trailing_whitespace = unset
+
+[COMMIT_EDITMSG]
+max_line_length = 72
diff --git a/contrib/.editorconfig b/contrib/.editorconfig
new file mode 100644
index 000000000..bd9b590d3
--- /dev/null
+++ b/contrib/.editorconfig
@@ -0,0 +1,13 @@
+# https://editorconfig.org
+
+root = false
+
+[*]
+charset = unset
+end_of_line = unset
+indent_size = unset
+indent_style = unset
+insert_final_newline = unset
+max_doc_length = unset
+max_line_length = unset
+trim_trailing_whitespace = unset
diff --git a/loongarch/.editorconfig b/loongarch/.editorconfig
new file mode 100644
index 000000000..b142d823b
--- /dev/null
+++ b/loongarch/.editorconfig
@@ -0,0 +1,7 @@
+# https://editorconfig.org
+
+root = false
+
+# FIXME
+[*.[ch]]
+max_line_length = unset
diff --git a/powerpc/.editorconfig b/powerpc/.editorconfig
new file mode 100644
index 000000000..b142d823b
--- /dev/null
+++ b/powerpc/.editorconfig
@@ -0,0 +1,7 @@
+# https://editorconfig.org
+
+root = false
+
+# FIXME
+[*.[ch]]
+max_line_length = unset
diff --git a/projects/.editorconfig b/projects/.editorconfig
new file mode 100644
index 000000000..bd9b590d3
--- /dev/null
+++ b/projects/.editorconfig
@@ -0,0 +1,13 @@
+# https://editorconfig.org
+
+root = false
+
+[*]
+charset = unset
+end_of_line = unset
+indent_size = unset
+indent_style = unset
+insert_final_newline = unset
+max_doc_length = unset
+max_line_length = unset
+trim_trailing_whitespace = unset