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authorStephen Neuendorffer <stephen.neuendorffer@xilinx.com>2010-11-18 15:54:59 -0800
committerGrant Likely <grant.likely@secretlab.ca>2010-12-29 16:53:45 -0700
commit9706a36e35c4ce04f28a62cfe1205b4e3b0dd13c (patch)
tree12f378664e5fa9fe560b281fa56214772df3f6ab /include/linux/of_fdt.h
parente6ce1324e4f08b0d984340201a125806dae0e9a6 (diff)
downloadlwn-9706a36e35c4ce04f28a62cfe1205b4e3b0dd13c.tar.gz
lwn-9706a36e35c4ce04f28a62cfe1205b4e3b0dd13c.zip
of/flattree: Add non-boottime device tree functions
In preparation for providing run-time handling of device trees, factor out some of the basic functions so that they take an arbitrary blob, rather than relying on the single boot-time tree. V2: - functions have of_fdt_* names - removed find_flat_dt_string - blob argument is first Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/linux/of_fdt.h')
-rw-r--r--include/linux/of_fdt.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 7bbf5b328438..70c5b736f0a3 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -58,6 +58,17 @@ struct boot_param_header {
};
#if defined(CONFIG_OF_FLATTREE)
+
+/* For scanning an arbitrary device-tree at any time */
+extern char *of_fdt_get_string(struct boot_param_header *blob, u32 offset);
+extern void *of_fdt_get_property(struct boot_param_header *blob,
+ unsigned long node,
+ const char *name,
+ unsigned long *size);
+extern int of_fdt_is_compatible(struct boot_param_header *blob,
+ unsigned long node,
+ const char *compat);
+
/* TBD: Temporary export of fdt globals - remove when code fully merged */
extern int __initdata dt_root_addr_cells;
extern int __initdata dt_root_size_cells;