- heavily copied from register_persistant_environment which was
Signed-off-by: Juergen Beisert <jbe@xxxxxxxxxxxxxx>
Signed-off-by: Eric Bénard <eric@xxxxxxxxxx>
---
common/environment.c | 40 ++++++++++++++++++++++++++++++++++++++++
include/environment.h | 1 +
2 files changed, 41 insertions(+)
diff --git a/common/environment.c b/common/environment.c
index e8d623f..55befd9 100644
--- a/common/environment.c
+++ b/common/environment.c
@@ -363,3 +363,43 @@ out:
free(buf_free);
return ret;
}
+
+#ifdef __BAREBOX__
+/**
+ * Try to register an environment storage on a device's partition
+ * @return 0 on success
+ *
+ * We rely on the existence of a usable storage device, already attached to
+ * our system, to get something like a persistent memory for our environment.
+ * We need to specify the partition number to use on this device.
+ * @param[in] devname Name of the device
+ * @param[in] partnr Partition number
+ * @return 0 on success, anything else in case of failure
+ */
+
+int register_persistent_environment(const char *devname, unsigned int partnr)
+{
+ struct cdev *cdev;
+ char *partname;
+
+ if (!devname)
+ return -EINVAL;
+
+ cdev = cdev_by_name(devname);
+ if (cdev == NULL) {
+ pr_err("No %s present\n", devname);
+ return -ENODEV;
+ }
+ partname = asprintf("%s.%d", devname, partnr);
+ cdev = cdev_by_name(partname);
+ if (cdev == NULL) {
+ pr_err("No %s partition available\n", partname);
+ pr_info("Please create the partition %s to store the env\n", partname);
+ return -ENODEV;
+ }
+
+ return devfs_add_partition(partname, 0, cdev->size,
+ DEVFS_PARTITION_FIXED, "env0");
+}
+EXPORT_SYMBOL(register_persistent_environment);
+#endif
diff --git a/include/environment.h b/include/environment.h
index 7bdd213..d172f8f 100644
--- a/include/environment.h
+++ b/include/environment.h
@@ -71,6 +71,7 @@ int env_pop_context(void);
int env_push_context(void);
int export(const char *);
+int register_persistent_environment(const char *devname, unsigned int partnr);
#endif /* _ENVIRONMENT_H_ */
--
1.7.11.7
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