From: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Date: Tue, 15 Jan 2008 14:06:17 +0000 (+0900)
Subject: sh: Add support of map_physmem() and unmap_physmem() to SuperH
X-Git-Tag: v1.3.2-rc1~78^2~2
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=63a11be68306870e04d3851ed9fa41955cdf4894;p=oweals%2Fu-boot.git

sh: Add support of map_physmem() and unmap_physmem() to SuperH

This patch add the support of map_physmem() and unmap_physmem()
used with Common Flash Interface(CFI) driver.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---

diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h
index 03427ad33b..51fd10b566 100644
--- a/include/asm-sh/io.h
+++ b/include/asm-sh/io.h
@@ -227,5 +227,32 @@ out:
 static inline void sync(void)
 {
 }
+
+/*
+ * Given a physical address and a length, return a virtual address
+ * that can be used to access the memory range with the caching
+ * properties specified by "flags".
+ */
+typedef unsigned long phys_addr_t;
+
+#define MAP_NOCACHE     (0)
+#define MAP_WRCOMBINE   (0)
+#define MAP_WRBACK      (0)
+#define MAP_WRTHROUGH   (0)
+
+static inline void *
+map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
+{
+	return (void *)paddr;
+}
+
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long flags)
+{
+
+}
+
 #endif	/* __KERNEL__ */
 #endif	/* __ASM_SH_IO_H */