summaryrefslogtreecommitdiff
path: root/include/dm
diff options
context:
space:
mode:
authorSimon Glass <sjg@chromium.org>2017-05-18 20:09:02 -0600
committerSimon Glass <sjg@chromium.org>2017-06-01 07:03:07 -0600
commitb7e0d73bad051b666c6cbf9dff381f4c48dcb8a2 (patch)
tree9475f7e35d1d9d882da940fcde7c2e4c91270ee0 /include/dm
parentbed774969c0ba2ac6999b82953c0a0a708f3ad43 (diff)
dm: core: Add a place to put extra device-tree reading functions
Some functions deal with structured data rather than simple data types. It makes sense to have these in their own file. For now this just has a function to read a flashmap entry. Move the data types also. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm')
-rw-r--r--include/dm/of_extra.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/include/dm/of_extra.h b/include/dm/of_extra.h
new file mode 100644
index 0000000000..01b6ebedff
--- /dev/null
+++ b/include/dm/of_extra.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2017 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _DM_OF_EXTRA_H
+#define _DM_OF_EXTRA_H
+
+#include <dm/ofnode.h>
+
+enum fmap_compress_t {
+ FMAP_COMPRESS_NONE,
+ FMAP_COMPRESS_LZO,
+};
+
+enum fmap_hash_t {
+ FMAP_HASH_NONE,
+ FMAP_HASH_SHA1,
+ FMAP_HASH_SHA256,
+};
+
+/* A flash map entry, containing an offset and length */
+struct fmap_entry {
+ uint32_t offset;
+ uint32_t length;
+ uint32_t used; /* Number of bytes used in region */
+ enum fmap_compress_t compress_algo; /* Compression type */
+ enum fmap_hash_t hash_algo; /* Hash algorithm */
+ const uint8_t *hash; /* Hash value */
+ int hash_size; /* Hash size */
+};
+
+/**
+ * Read a flash entry from the fdt
+ *
+ * @param node Reference to node to read
+ * @param name Name of node being read
+ * @param entry Place to put offset and size of this node
+ * @return 0 if ok, -ve on error
+ */
+int of_read_fmap_entry(ofnode node, const char *name,
+ struct fmap_entry *entry);
+
+#endif