[src/trunk]: src/sys/dev/fdt fdt: add support for USERCONF option

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5f34fe3198a3
branches:  trunk
changeset: 364450:5f34fe3198a3
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Fri Mar 25 21:23:51 2022 +0000

description:
fdt: add support for USERCONF option

diffstat:

 sys/dev/fdt/fdt_userconf.c |  67 ++++++++++++++++++++++++++++++++++++++++++++++
 sys/dev/fdt/files.fdt      |   4 ++-
 2 files changed, 70 insertions(+), 1 deletions(-)

diffs (89 lines):

diff -r 12b64ac9f1eb -r 5f34fe3198a3 sys/dev/fdt/fdt_userconf.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/fdt/fdt_userconf.c        Fri Mar 25 21:23:51 2022 +0000
@@ -0,0 +1,67 @@
+/* $NetBSD: fdt_userconf.c,v 1.1 2022/03/25 21:23:51 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2022 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: fdt_userconf.c,v 1.1 2022/03/25 21:23:51 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/userconf.h>
+
+#include <libfdt.h>
+#include <dev/fdt/fdtvar.h>
+
+#define        FDT_CHOSEN_PATH                 "/chosen"
+#define        FDT_CHOSEN_USERCONF_PROP        "netbsd,userconf"
+
+void
+userconf_bootinfo(void)
+{
+       const void *fdt = fdtbus_get_data();
+       const char *cmd;
+       int chosen, index;
+
+       if (fdt == NULL) {
+               return;
+       }
+
+       chosen = fdt_path_offset(fdt, FDT_CHOSEN_PATH);
+       if (chosen < 0) {
+               return;
+       }
+
+       index = 0;
+       do {
+               cmd = fdt_stringlist_get(fdt, chosen, FDT_CHOSEN_USERCONF_PROP,
+                   index++, NULL);
+               if (cmd != NULL) {
+                       aprint_debug("Processing userconf command: %s\n", cmd);
+                       userconf_parse(__UNCONST(cmd));
+               }
+       } while (cmd != NULL);
+}
diff -r 12b64ac9f1eb -r 5f34fe3198a3 sys/dev/fdt/files.fdt
--- a/sys/dev/fdt/files.fdt     Fri Mar 25 21:23:00 2022 +0000
+++ b/sys/dev/fdt/files.fdt     Fri Mar 25 21:23:51 2022 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.fdt,v 1.63 2022/03/04 08:19:06 skrll Exp $
+# $NetBSD: files.fdt,v 1.64 2022/03/25 21:23:51 jmcneill Exp $
 
 include        "external/bsd/libfdt/conf/files.libfdt"
 
@@ -13,6 +13,8 @@
 attach simplebus at fdt
 file   dev/fdt/fdtbus.c                        fdt
 
+file   dev/fdt/fdt_userconf.c                  fdt & userconf
+
 device fregulator
 attach fregulator at fdt
 file   dev/fdt/fixedregulator.c                fregulator