Revert "global: Remove CONFIG_SYS_EXTRA_OPTIONS support"WIP/02Apr2022-next

Unfortunately, we require additional logic to buildman to support this
removal and still use SYS_SOC, etc, for build targets.

This reverts commit eeec00072d7a0b5b91896d014618e558ce438738.

Signed-off-by: Tom Rini <trini@konsulko.com>

7 files changed, 122 insertions, 5 deletions

diff --git a/boot/Kconfig b/boot/Kconfig
index 0514d3b..394b26f 100644
--- a/boot/Kconfig
+++ b/boot/Kconfig
@@ -339,6 +339,19 @@ config OF_STDOUT_VIA_ALIAS
 	  incorrect when used with device tree as this option does not
 	  exist / should not be used.
 
+config SYS_EXTRA_OPTIONS
+	string "Extra Options (DEPRECATED)"
+	help
+	  The old configuration infrastructure (= mkconfig + boards.cfg)
+	  provided the extra options field. If you have something like
+	  "HAS_BAR,BAZ=64", the optional options
+	    #define CONFIG_HAS
+	    #define CONFIG_BAZ	64
+	  will be defined in include/config.h.
+	  This option was prepared for the smooth migration from the old
+	  configuration to Kconfig. Since this option will be removed sometime,
+	  new boards should not use this option.
+
 config HAVE_SYS_TEXT_BASE
 	bool
 	depends on !NIOS2 && !XTENSA
diff --git a/doc/README.kconfig b/doc/README.kconfig
index 808cf56..0689f66 100644
--- a/doc/README.kconfig
+++ b/doc/README.kconfig
@@ -99,6 +99,7 @@ Kconfig.  Each field of boards.cfg was converted as follows:
  Vendor      ->  CONFIG_SYS_VENDOR defined by Kconfig
  Board       ->  CONFIG_SYS_BOARD defined by Kconfig
  Target      ->  File name of defconfig (configs/<target>_defconfig)
+ Options     ->  CONFIG_SYS_EXTRA_OPTIONS defined by Kconfig
  Maintainers ->  "M:" entry of MAINTAINERS
 
 
@@ -139,6 +140,12 @@ When removing an obsolete board, the following steps are generally needed:
 TODO
 ----
 
+- The option field of boards.cfg, which was used for the pre-Kconfig
+  configuration, moved to CONFIG_SYS_EXTRA_OPTIONS verbatim now.
+  Board maintainers are expected to implement proper Kconfig options
+  and switch over to them.  Eventually CONFIG_SYS_EXTRA_OPTIONS will go away.
+  CONFIG_SYS_EXTRA_OPTIONS should not be used for new boards.
+
 - In the pre-Kconfig, a single board had multiple entries in the boards.cfg
   file with differences in the option fields.  The corresponding defconfig
   files were auto-generated when switching to Kconfig.  Now we have too many
diff --git a/doc/develop/moveconfig.rst b/doc/develop/moveconfig.rst
index bfb7aff..2f53ea5 100644
--- a/doc/develop/moveconfig.rst
+++ b/doc/develop/moveconfig.rst
@@ -295,7 +295,8 @@ Available options
 
  -y, --yes
    Instead of prompting, automatically go ahead with all operations. This
-   includes cleaning up headers, the config whitelist and the README.
+   includes cleaning up headers, CONFIG_SYS_EXTRA_OPTIONS, the config whitelist
+   and the README.
 
 To see the complete list of supported options, run::
 
diff --git a/scripts/Makefile.autoconf b/scripts/Makefile.autoconf
index 00c0381..0b3ffa0 100644
--- a/scripts/Makefile.autoconf
+++ b/scripts/Makefile.autoconf
@@ -100,6 +100,10 @@ tpl/include/autoconf.mk: tpl/u-boot.cfg
 # Prior to Kconfig, it was generated by mkconfig. Now it is created here.
 define filechk_config_h
 	(echo "/* Automatically generated - do not edit */";		\
+	for i in $$(echo $(CONFIG_SYS_EXTRA_OPTIONS) | sed 's/,/ /g'); do \
+		echo \#define CONFIG_$$i				\
+		| sed '/=/ {s/=/	/;q; } ; { s/$$/	1/; }'; \
+	done;								\
 	echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\
 	echo \#include \<config_uncmd_spl.h\>;				\
 	echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>;		\
diff --git a/scripts/build-whitelist.sh b/scripts/build-whitelist.sh
index 37630c0..6feb9b6 100755
--- a/scripts/build-whitelist.sh
+++ b/scripts/build-whitelist.sh
@@ -10,13 +10,30 @@
 #
 export LC_ALL=C LC_COLLATE=C
 
-# Looks for the rest of the CONFIG options, but exclude those in Kconfig and
-# defconfig files.
+# There are two independent greps. The first pulls out the component parts
+# of CONFIG_SYS_EXTRA_OPTIONS. An example is:
 #
+#	SUN7I_GMAC,AHCI,SATAPWR=SUNXI_GPB(8)
+#
+# We want this to produce:
+#	CONFIG_SUN7I_GMAC
+#	CONFIG_AHCI
+#	CONFIG_SATAPWR
+#
+# The second looks for the rest of the CONFIG options, but excludes those in
+# Kconfig and defconfig files.
+#
+(
+git grep CONFIG_SYS_EXTRA_OPTIONS |sed -n \
+	's/.*CONFIG_SYS_EXTRA_OPTIONS="\(.*\)"/\1/ p' \
+	| tr , '\n' \
+	| sed 's/ *\([A-Za-z0-9_]*\).*/CONFIG_\1/'
+
 git grep CONFIG_ | \
 	egrep -vi "(Kconfig:|defconfig:|README|\.py|\.pl:)" \
 	| tr ' \t' '\n\n' \
-	| sed -n 's/^\(CONFIG_[A-Za-z0-9_]*\).*/\1/p' \
+	| sed -n 's/^\(CONFIG_[A-Za-z0-9_]*\).*/\1/p'
+) \
 	|sort |uniq >scripts/config_whitelist.txt.tmp1;
 
 # Finally, we need a list of the valid Kconfig options to exclude these from
diff --git a/tools/genboardscfg.py b/tools/genboardscfg.py
index ecdc166..07bf681 100755
--- a/tools/genboardscfg.py
+++ b/tools/genboardscfg.py
@@ -111,6 +111,7 @@ class KconfigScanner:
         'vendor' : 'SYS_VENDOR',
         'board' : 'SYS_BOARD',
         'config' : 'SYS_CONFIG_NAME',
+        'options' : 'SYS_EXTRA_OPTIONS'
     }
 
     def __init__(self):
@@ -148,6 +149,7 @@ class KconfigScanner:
               'board': <board_name>,
               'target': <target_name>,
               'config': <config_header_name>,
+              'options': <extra_options>
           }
         """
         # strip special prefixes and save it in a temporary file
@@ -183,6 +185,14 @@ class KconfigScanner:
         if params['arch'] == 'arm' and params['cpu'] == 'armv8':
             params['arch'] = 'aarch64'
 
+        # fix-up options field. It should have the form:
+        # <config name>[:comma separated config options]
+        if params['options'] != '-':
+            params['options'] = params['config'] + ':' + \
+                                params['options'].replace(r'\"', '"')
+        elif params['config'] != params['target']:
+            params['options'] = params['config']
+
         return params
 
 def scan_defconfigs_for_multiprocess(queue, defconfigs):
@@ -368,7 +378,7 @@ def format_and_output(params_list, output):
       output: The path to the output file
     """
     FIELDS = ('status', 'arch', 'cpu', 'soc', 'vendor', 'board', 'target',
-              'maintainers')
+              'options', 'maintainers')
 
     # First, decide the width of each column
     max_length = dict([ (f, 0) for f in FIELDS])
diff --git a/tools/moveconfig.py b/tools/moveconfig.py
index 09617a0..84bc875 100755
--- a/tools/moveconfig.py
+++ b/tools/moveconfig.py
@@ -443,6 +443,70 @@ def cleanup_headers(configs, args):
                     cleanup_one_header(header_path, patterns, args)
                     cleanup_empty_blocks(header_path, args)
 
+def cleanup_one_extra_option(defconfig_path, configs, args):
+    """Delete config defines in CONFIG_SYS_EXTRA_OPTIONS in one defconfig file.
+
+    Args:
+      defconfig_path: path to the cleaned defconfig file.
+      configs: A list of CONFIGs to remove.
+      args (Namespace): program arguments
+    """
+
+    start = 'CONFIG_SYS_EXTRA_OPTIONS="'
+    end = '"'
+
+    lines = read_file(defconfig_path)
+
+    for i, line in enumerate(lines):
+        if line.startswith(start) and line.endswith(end):
+            break
+    else:
+        # CONFIG_SYS_EXTRA_OPTIONS was not found in this defconfig
+        return
+
+    old_tokens = line[len(start):-len(end)].split(',')
+    new_tokens = []
+
+    for token in old_tokens:
+        pos = token.find('=')
+        if not (token[:pos] if pos >= 0 else token) in configs:
+            new_tokens.append(token)
+
+    if new_tokens == old_tokens:
+        return
+
+    tolines = copy.copy(lines)
+
+    if new_tokens:
+        tolines[i] = start + ','.join(new_tokens) + end
+    else:
+        tolines.pop(i)
+
+    show_diff(lines, tolines, defconfig_path, args.color)
+
+    if args.dry_run:
+        return
+
+    write_file(defconfig_path, tolines)
+
+def cleanup_extra_options(configs, args):
+    """Delete config defines in CONFIG_SYS_EXTRA_OPTIONS in defconfig files.
+
+    Args:
+      configs: A list of CONFIGs to remove.
+      args (Namespace): program arguments
+    """
+    if not confirm(args, 'Clean up CONFIG_SYS_EXTRA_OPTIONS?'):
+        return
+
+    configs = [ config[len('CONFIG_'):] for config in configs ]
+
+    defconfigs = get_all_defconfigs()
+
+    for defconfig in defconfigs:
+        cleanup_one_extra_option(os.path.join('configs', defconfig), configs,
+                                 args)
+
 def cleanup_whitelist(configs, args):
     """Delete config whitelist entries
 
@@ -1739,6 +1803,7 @@ doc/develop/moveconfig.rst for documentation.'''
 
     if configs:
         cleanup_headers(configs, args)
+        cleanup_extra_options(configs, args)
         cleanup_whitelist(configs, args)
         cleanup_readme(configs, args)