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>
diff --git a/drivers/core/Makefile b/drivers/core/Makefile
index 1c6795a..d74b065 100644
--- a/drivers/core/Makefile
+++ b/drivers/core/Makefile
@@ -12,4 +12,4 @@
obj-$(CONFIG_$(SPL_)REGMAP) += regmap.o
obj-$(CONFIG_$(SPL_)SYSCON) += syscon-uclass.o
obj-$(CONFIG_OF_LIVE) += of_access.o of_addr.o
-obj-$(CONFIG_OF_CONTROL) += ofnode.o
+obj-$(CONFIG_OF_CONTROL) += of_extra.o ofnode.o
diff --git a/drivers/core/of_extra.c b/drivers/core/of_extra.c
new file mode 100644
index 0000000..0381909
--- /dev/null
+++ b/drivers/core/of_extra.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2017 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <libfdt.h>
+#include <dm/of_access.h>
+#include <dm/of_extra.h>
+#include <dm/ofnode.h>
+
+int of_read_fmap_entry(ofnode node, const char *name,
+ struct fmap_entry *entry)
+{
+ const char *prop;
+ u32 reg[2];
+
+ if (ofnode_read_u32_array(node, "reg", reg, 2)) {
+ debug("Node '%s' has bad/missing 'reg' property\n", name);
+ return -FDT_ERR_NOTFOUND;
+ }
+ entry->offset = reg[0];
+ entry->length = reg[1];
+ entry->used = ofnode_read_s32_default(node, "used", entry->length);
+ prop = ofnode_read_string(node, "compress");
+ entry->compress_algo = prop && !strcmp(prop, "lzo") ?
+ FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
+ prop = ofnode_read_string(node, "hash");
+ if (prop)
+ entry->hash_size = strlen(prop);
+ entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
+ entry->hash = (uint8_t *)prop;
+
+ return 0;
+}