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, 115 insertions, 0 deletions

diff --git a/arch/mn10300/kernel/gdb-low.S b/arch/mn10300/kernel/gdb-low.S
new file mode 100644
index 000000000000..e2725552cd82
--- /dev/null
+++ b/arch/mn10300/kernel/gdb-low.S
@@ -0,0 +1,115 @@
+###############################################################################
+#
+# MN10300 Low-level gdbstub routines
+#
+# 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.
+#
+###############################################################################
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/smp.h>
+#include <asm/cache.h>
+#include <asm/cpu-regs.h>
+#include <asm/exceptions.h>
+#include <asm/frame.inc>
+#include <asm/serial-regs.h>
+
+        .text
+
+###############################################################################
+#
+# GDB stub read memory with guard
+# - D0 holds the memory address to read
+# - D1 holds the address to store the byte into
+#
+###############################################################################
+        .globl gdbstub_read_byte_guard
+        .globl gdbstub_read_byte_cont
+ENTRY(gdbstub_read_byte)
+        mov     d0,a0
+        mov     d1,a1
+        clr     d0
+gdbstub_read_byte_guard:
+        movbu   (a0),d1
+gdbstub_read_byte_cont:
+        movbu   d1,(a1)
+        ret     [],0
+
+        .globl gdbstub_read_word_guard
+        .globl gdbstub_read_word_cont
+ENTRY(gdbstub_read_word)
+        mov     d0,a0
+        mov     d1,a1
+        clr     d0
+gdbstub_read_word_guard:
+        movhu   (a0),d1
+gdbstub_read_word_cont:
+        movhu   d1,(a1)
+        ret     [],0
+
+        .globl gdbstub_read_dword_guard
+        .globl gdbstub_read_dword_cont
+ENTRY(gdbstub_read_dword)
+        mov     d0,a0
+        mov     d1,a1
+        clr     d0
+gdbstub_read_dword_guard:
+        mov     (a0),d1
+gdbstub_read_dword_cont:
+        mov     d1,(a1)
+        ret     [],0
+
+###############################################################################
+#
+# GDB stub write memory with guard
+# - D0 holds the byte to store
+# - D1 holds the memory address to write
+#
+###############################################################################
+        .globl gdbstub_write_byte_guard
+        .globl gdbstub_write_byte_cont
+ENTRY(gdbstub_write_byte)
+        mov     d0,a0
+        mov     d1,a1
+        clr     d0
+gdbstub_write_byte_guard:
+        movbu   a0,(a1)
+gdbstub_write_byte_cont:
+        ret     [],0
+
+        .globl gdbstub_write_word_guard
+        .globl gdbstub_write_word_cont
+ENTRY(gdbstub_write_word)
+        mov     d0,a0
+        mov     d1,a1
+        clr     d0
+gdbstub_write_word_guard:
+        movhu   a0,(a1)
+gdbstub_write_word_cont:
+        ret     [],0
+
+        .globl gdbstub_write_dword_guard
+        .globl gdbstub_write_dword_cont
+ENTRY(gdbstub_write_dword)
+        mov     d0,a0
+        mov     d1,a1
+        clr     d0
+gdbstub_write_dword_guard:
+        mov     a0,(a1)
+gdbstub_write_dword_cont:
+        ret     [],0
+
+###############################################################################
+#
+# GDB stub BUG() trap
+#
+###############################################################################
+ENTRY(__gdbstub_bug_trap)
+        .byte   0xF7,0xF7       # don't use 0xFF as the JTAG unit preempts that
+        ret     [],0