mn10300: add the MN10300/AM33 architecture to the kernel

Add architecture support for the MN10300/AM33 CPUs produced by MEI to the
kernel.

This patch also adds board support for the ASB2303 with the ASB2308 daughter
board, and the ASB2305.  The only processor supported is the MN103E010, which
is an AM33v2 core plus on-chip devices.

[akpm@linux-foundation.org: nuke cvs control strings]
Signed-off-by: Masakazu Urade <urade.masakazu@jp.panasonic.com>
Signed-off-by: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 80 insertions, 0 deletions

diff --git a/include/asm-mn10300/tlbflush.h b/include/asm-mn10300/tlbflush.h
new file mode 100644
index 000000000000..e0239865abcb
--- /dev/null
+++ b/include/asm-mn10300/tlbflush.h
@@ -0,0 +1,80 @@
+/* MN10300 TLB flushing functions
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_TLBFLUSH_H
+#define _ASM_TLBFLUSH_H
+
+#include <asm/processor.h>
+
+#define __flush_tlb()                                           \
+do {                                                            \
+        int w;                                                  \
+        __asm__ __volatile__                                    \
+                ("      mov %1,%0               \n"             \
+                 "      or %2,%0                \n"             \
+                 "      mov %0,%1               \n"             \
+                 : "=d"(w)                                      \
+                 : "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV)      \
+                 : "memory"                                     \
+                 );                                             \
+} while (0)
+
+#define __flush_tlb_all() __flush_tlb()
+#define __flush_tlb_one(addr) __flush_tlb()
+
+
+/*
+ * TLB flushing:
+ *
+ *  - flush_tlb() flushes the current mm struct TLBs
+ *  - flush_tlb_all() flushes all processes TLBs
+ *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
+ *  - flush_tlb_page(vma, vmaddr) flushes one page
+ *  - flush_tlb_range(mm, start, end) flushes a range of pages
+ *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
+ */
+#define flush_tlb_all()                         \
+do {                                            \
+        preempt_disable();                      \
+        __flush_tlb_all();                      \
+        preempt_enable();                       \
+} while (0)
+
+#define flush_tlb_mm(mm)                        \
+do {                                            \
+        preempt_disable();                      \
+        __flush_tlb_all();                      \
+        preempt_enable();                       \
+} while (0)
+
+#define flush_tlb_range(vma, start, end)                        \
+do {                                                            \
+        unsigned long __s __attribute__((unused)) = (start);    \
+        unsigned long __e __attribute__((unused)) = (end);      \
+        preempt_disable();                                      \
+        __flush_tlb_all();                                      \
+        preempt_enable();                                       \
+} while (0)
+
+
+#define __flush_tlb_global()                    flush_tlb_all()
+#define flush_tlb()                             flush_tlb_all()
+#define flush_tlb_kernel_range(start, end)                      \
+do {                                                            \
+        unsigned long __s __attribute__((unused)) = (start);    \
+        unsigned long __e __attribute__((unused)) = (end);      \
+        flush_tlb_all();                                        \
+} while (0)
+
+extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
+
+#define flush_tlb_pgtables(mm, start, end)      do {} while (0)
+
+#endif /* _ASM_TLBFLUSH_H */