From aa89157d137ee6d63ff41a72a5744ef5ebba112d Mon Sep 17 00:00:00 2001
From: Julian Winkler <julian.winkler1@web.de>
Date: Sat, 18 Feb 2023 22:31:04 +0100
Subject: [PATCH 1/2] discover/grub2: implement 'devicetree' command
This change adds support for the grub2 'devicetree' command, loading a
dtb file from filesystem.
---
discover/grub2/builtins.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/discover/grub2/builtins.c b/discover/grub2/builtins.c
index ff28586..c96b181 100644
--- a/discover/grub2/builtins.c
+++ b/discover/grub2/builtins.c
@@ -102,6 +102,29 @@ static int builtin_initrd(struct grub2_script *script,
return 0;
}
+static int builtin_devicetree(struct grub2_script *script,
+ void *data __attribute__((unused)),
+ int argc, char *argv[])
+{
+ struct discover_boot_option *opt = script->opt;
+
+ if (!opt) {
+ pb_log("grub2 syntax error: 'devicetree' statement outside "
+ "a menuentry.\n");
+ return -1;
+ }
+
+ if (argc < 2) {
+ pb_log("grub2 syntax error: no filename provided to "
+ "devicetree statement\n");
+ return -1;
+ }
+
+ opt->dtb = create_grub2_resource(script, opt, argv[1]);
+
+ return 0;
+}
+
static const struct option search_options[] = {
{
.name = "set",
@@ -511,6 +534,10 @@ static struct {
.name = "initrd16",
.fn = builtin_initrd,
},
+ {
+ .name = "devicetree",
+ .fn = builtin_devicetree,
+ },
{
.name = "search",
.fn = builtin_search,
--
2.39.1