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>

2 files changed, 80 insertions, 0 deletions

diff --git a/arch/mn10300/proc-mn103e010/Makefile b/arch/mn10300/proc-mn103e010/Makefile
new file mode 100644
index 000000000000..ac2c9784cd21
--- /dev/null
+++ b/arch/mn10300/proc-mn103e010/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the MN103E010 processor chip specific code
+#
+obj-y   := proc-init.o
+
diff --git a/arch/mn10300/proc-mn103e010/proc-init.c b/arch/mn10300/proc-mn103e010/proc-init.c
new file mode 100644
index 000000000000..9a482efafa82
--- /dev/null
+++ b/arch/mn10300/proc-mn103e010/proc-init.c
@@ -0,0 +1,75 @@
+/* MN103E010 Processor initialisation
+ *
+ * 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/kernel.h>
+#include <asm/rtc.h>
+
+/*
+ * initialise the on-silicon processor peripherals
+ */
+asmlinkage void __init processor_init(void)
+{
+        int loop;
+
+        /* set up the exception table first */
+        for (loop = 0x000; loop < 0x400; loop += 8)
+                __set_intr_stub(loop, __common_exception);
+
+        __set_intr_stub(EXCEP_ITLBMISS,         itlb_miss);
+        __set_intr_stub(EXCEP_DTLBMISS,         dtlb_miss);
+        __set_intr_stub(EXCEP_IAERROR,          itlb_aerror);
+        __set_intr_stub(EXCEP_DAERROR,          dtlb_aerror);
+        __set_intr_stub(EXCEP_BUSERROR,         raw_bus_error);
+        __set_intr_stub(EXCEP_DOUBLE_FAULT,     double_fault);
+        __set_intr_stub(EXCEP_SYSCALL0,         system_call);
+
+        __set_intr_stub(EXCEP_NMI,              nmi_handler);
+        __set_intr_stub(EXCEP_WDT,              nmi_handler);
+        __set_intr_stub(EXCEP_IRQ_LEVEL0,       irq_handler);
+        __set_intr_stub(EXCEP_IRQ_LEVEL1,       irq_handler);
+        __set_intr_stub(EXCEP_IRQ_LEVEL2,       irq_handler);
+        __set_intr_stub(EXCEP_IRQ_LEVEL3,       irq_handler);
+        __set_intr_stub(EXCEP_IRQ_LEVEL4,       irq_handler);
+        __set_intr_stub(EXCEP_IRQ_LEVEL5,       irq_handler);
+        __set_intr_stub(EXCEP_IRQ_LEVEL6,       irq_handler);
+
+        IVAR0 = EXCEP_IRQ_LEVEL0;
+        IVAR1 = EXCEP_IRQ_LEVEL1;
+        IVAR2 = EXCEP_IRQ_LEVEL2;
+        IVAR3 = EXCEP_IRQ_LEVEL3;
+        IVAR4 = EXCEP_IRQ_LEVEL4;
+        IVAR5 = EXCEP_IRQ_LEVEL5;
+        IVAR6 = EXCEP_IRQ_LEVEL6;
+
+        mn10300_dcache_flush_inv();
+        mn10300_icache_inv();
+
+        /* disable all interrupts and set to priority 6 (lowest) */
+        for (loop = 0; loop < NR_IRQS; loop++)
+                GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT;
+
+        /* clear the timers */
+        TM0MD   = 0;
+        TM1MD   = 0;
+        TM2MD   = 0;
+        TM3MD   = 0;
+        TM4MD   = 0;
+        TM5MD   = 0;
+        TM6MD   = 0;
+        TM6MDA  = 0;
+        TM6MDB  = 0;
+        TM7MD   = 0;
+        TM8MD   = 0;
+        TM9MD   = 0;
+        TM10MD  = 0;
+        TM11MD  = 0;
+
+        calibrate_clock();
+}