For most of architectures in U-Boot, virtual address is straight
mapped to physical address. So, it makes sense to have generic
defines of ioremap and friends in <linux/io.h>.
All of them are just empty and will disappear at compile time, but
they will be helpful to implement drivers which are counterparts of
Linux ones.
I notice MIPS already has its own implementation, so I surrounded
the defines with #ifndef CONFIG_MIPS ... #endif. I guess Sandbox
will need its own implementation as well.
Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---
include/linux/io.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/linux/io.h b/include/linux/io.h
index 1b36a22..ca23caa 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -5,6 +5,22 @@
#ifndef _LINUX_IO_H
#define _LINUX_IO_H
+#include <linux/compiler.h>
+#include <linux/types.h>
#include <asm/io.h>
+#ifndef CONFIG_MIPS
+static inline void __iomem *ioremap(resource_size_t offset,
+ resource_size_t size)
+{
+ return (void __iomem *)(unsigned long)offset;
+}
+
+static inline void iounmap(void __iomem *addr)
+{
+}
+
+#define devm_ioremap(dev, offset, size) ioremap(offset, size)
+#endif
+
#endif /* _LINUX_IO_H */
--
1.9.1
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