1 files changed, 58 insertions, 0 deletions

diff --git a/include/asm-arm/arch-lh7a40x/hardware.h b/include/asm-arm/arch-lh7a40x/hardware.h
new file mode 100644
index 000000000000..aeb07c162e25
--- /dev/null
+++ b/include/asm-arm/arch-lh7a40x/hardware.h
@@ -0,0 +1,58 @@
+/* include/asm-arm/arch-lh7a40x/hardware.h
+ *
+ *  Copyright (C) 2004 Coastal Environmental Systems
+ *
+ *  [ Substantially cribbed from include/asm-arm/arch-pxa/hardware.h ]
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  version 2 as published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#define io_p2v(x) (0xf0000000 | (((x) & 0xfff00000) >> 4) | ((x) & 0x0000ffff))
+#define io_v2p(x) (             (((x) & 0x0fff0000) << 4) | ((x) & 0x0000ffff))
+
+#ifdef __ASSEMBLY__
+
+# define __REG(x)       io_p2v(x)
+# define __PREG(x)      io_v2p(x)
+
+#else
+
+# if 0
+#  define __REG(x)      (*((volatile u32 *)io_p2v(x)))
+# else
+/*
+ * This __REG() version gives the same results as the one above,  except
+ * that we are fooling gcc somehow so it generates far better and smaller
+ * assembly code for access to contigous registers.  It's a shame that gcc
+ * doesn't guess this by itself.
+ */
+#include <asm/types.h>
+typedef struct { volatile u32 offset[4096]; } __regbase;
+# define __REGP(x)      ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2]
+# define __REG(x)       __REGP(io_p2v(x))
+typedef struct { volatile u16 offset[4096]; } __regbase16;
+# define __REGP16(x)    ((__regbase16 *)((x)&~4095))->offset[((x)&4095)>>1]
+# define __REG16(x)     __REGP16(io_p2v(x))
+typedef struct { volatile u8 offset[4096]; } __regbase8;
+# define __REGP8(x)     ((__regbase8 *)((x)&~4095))->offset[(x)&4095]
+# define __REG8(x)      __REGP8(io_p2v(x))
+#endif
+
+/* Let's kick gcc's ass again... */
+# define __REG2(x,y)    \
+        ( __builtin_constant_p(y) ? (__REG((x) + (y))) \
+                                  : (*(volatile u32 *)((u32)&__REG(x) + (y))) )
+
+# define __PREG(x)      (io_v2p((u32)&(x)))
+
+#endif
+
+#include "registers.h"
+
+#endif  /* _ASM_ARCH_HARDWARE_H */