[PATCH 1/2] common: boot: Instantiate storage for global.boot.machine_id

Cory Tusar Cory.Tusar at zii.aero
Fri Jun 14 13:35:08 PDT 2019

There are references throughout the documentation (and elsewhere in the
boot code) regarding the use of machine-id in a bootloader spec file.
However, there was no global storage allocated for this variable.

This commit adds the necessary storage and associated initialization.

Signed-off-by: Cory Tusar <cory.tusar at zii.aero>
 common/boot.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/common/boot.c b/common/boot.c
index 974eaf5d0..fae2ff935 100644
--- a/common/boot.c
+++ b/common/boot.c
@@ -348,4 +348,13 @@ void bootsources_list(struct bootentries *bootentries)
 		printf("%-20s %s\n", entry->title, entry->description);
+static int boot_init(void)
+	globalvar_add_simple("boot.machine_id", NULL);
+	return 0;
 BAREBOX_MAGICVAR_NAMED(global_boot_default, global.boot.default, "default boot order");
+BAREBOX_MAGICVAR_NAMED(global_boot_machine_id, global.boot.machine_id, "optional machine-id, per Bootloader Spec");

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