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authorMarek Szyprowski <m.szyprowski@samsung.com>2014-02-28 14:42:48 +0100
committerGrant Likely <grant.likely@linaro.org>2014-03-11 17:26:58 +0000
commit3f0c8206644836e4f10a6b9fc47cda6a9a372f9b (patch)
treec85e72e465074dd94761f8a685a2110a3b7f8db9 /include/linux/of_reserved_mem.h
parente8d9d1f5485b52ec3c4d7af839e6914438f6c285 (diff)
downloadlwn-3f0c8206644836e4f10a6b9fc47cda6a9a372f9b.tar.gz
lwn-3f0c8206644836e4f10a6b9fc47cda6a9a372f9b.zip
drivers: of: add initialization code for dynamic reserved memory
This patch adds support for dynamically allocated reserved memory regions declared in device tree. Such regions are defined by 'size', 'alignment' and 'alloc-ranges' properties. Based on previous code provided by Josh Cartwright <joshc@codeaurora.org> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
Diffstat (limited to 'include/linux/of_reserved_mem.h')
-rw-r--r--include/linux/of_reserved_mem.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/of_reserved_mem.h b/include/linux/of_reserved_mem.h
new file mode 100644
index 000000000000..89226ed7d954
--- /dev/null
+++ b/include/linux/of_reserved_mem.h
@@ -0,0 +1,21 @@
+#ifndef __OF_RESERVED_MEM_H
+#define __OF_RESERVED_MEM_H
+
+struct reserved_mem {
+ const char *name;
+ unsigned long fdt_node;
+ phys_addr_t base;
+ phys_addr_t size;
+};
+
+#ifdef CONFIG_OF_RESERVED_MEM
+void fdt_init_reserved_mem(void);
+void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
+ phys_addr_t base, phys_addr_t size);
+#else
+static inline void fdt_init_reserved_mem(void) { }
+static inline void fdt_reserved_mem_save_node(unsigned long node,
+ const char *uname, phys_addr_t base, phys_addr_t size) { }
+#endif
+
+#endif /* __OF_RESERVED_MEM_H */