[MIPS] Make ioremap() work on TX39/49 special unmapped segment
TX39XX and TX49XX have "reserved" segment in CKSEG3 area.
0xff000000-0xff3fffff on TX49XX and 0xff000000-0xfffeffff on TX39XX
are reserved (unmapped, uncached). Controllers on these SoCs are
placed in this segment.
This patch add plat_ioremap() and plat_iounmap() to override default
behavior and implement these hooks for TX39/TX49.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/mach-generic/ioremap.h b/include/asm-mips/mach-generic/ioremap.h
index 9b64ff6..b379938 100644
--- a/include/asm-mips/mach-generic/ioremap.h
+++ b/include/asm-mips/mach-generic/ioremap.h
@@ -20,4 +20,15 @@
return phys_addr;
}
+static inline void __iomem *plat_ioremap(phys_t offset, unsigned long size,
+ unsigned long flags)
+{
+ return NULL;
+}
+
+static inline int plat_iounmap(const volatile void __iomem *addr)
+{
+ return 0;
+}
+
#endif /* __ASM_MACH_GENERIC_IOREMAP_H */