bootstd: Add command to enable setting of bootmeth specific properties
We have previously added logic to allow a "fallback" option to be
specified in the extlinux configuration. Provide a command that allows
us to set this as the preferred default option when booting.
Combined with the bootcount functionality, this allows the "altbootcmd"
to provide a means of falling back to a previously known good state
after a failed update. For example, if "bootcmd" is set to:
bootflow scan -lb
We would set "altbootcmd" to:
bootmeth set extlinux fallback 1; bootflow scan -lb
Causing the boot process to boot from the fallback option.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
diff --git a/boot/bootmeth-uclass.c b/boot/bootmeth-uclass.c
index c0abade..5b5fea3 100644
--- a/boot/bootmeth-uclass.c
+++ b/boot/bootmeth-uclass.c
@@ -251,6 +251,31 @@
return 0;
}
+int bootmeth_set_property(const char *name, const char *property, const char *value)
+{
+ int ret;
+ int len;
+ struct udevice *dev;
+ const struct bootmeth_ops *ops;
+
+ len = strlen(name);
+
+ ret = uclass_find_device_by_namelen(UCLASS_BOOTMETH, name, len,
+ &dev);
+ if (ret) {
+ printf("Unknown bootmeth '%s'\n", name);
+ return ret;
+ }
+
+ ops = bootmeth_get_ops(dev);
+ if (!ops->set_property) {
+ printf("set_property not found\n");
+ return -ENODEV;
+ }
+
+ return ops->set_property(dev, property, value);
+}
+
int bootmeth_setup_fs(struct bootflow *bflow, struct blk_desc *desc)
{
int ret;