MN10300: And Panasonic AM34 subarch and implement SMP

Implement the Panasonic MN10300 AM34 CPU subarch and implement SMP support for
MN10300.  Also implement support for the MN2WS0060 processor and the ASB2364
evaluation board which are AM34 based.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 85 insertions, 0 deletions

diff --git a/arch/mn10300/unit-asb2364/unit-init.c b/arch/mn10300/unit-asb2364/unit-init.c
new file mode 100644
index 000000000000..a3fc09b43f84
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/unit-init.c
@@ -0,0 +1,85 @@
+/* ASB2364 initialisation
+ *
+ * Copyright (C) 2002 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 License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/setup.h>
+#include <asm/processor.h>
+#include <asm/irq.h>
+#include <asm/intctl-regs.h>
+
+/*
+ * initialise some of the unit hardware before gdbstub is set up
+ */
+asmlinkage void __init unit_init(void)
+{
+	/* set up the external interrupts */
+
+	/* XIRQ[0]: NAND RXBY */
+	/* SET_XIRQ_TRIGGER(0, XIRQ_TRIGGER_LOWLEVEL); */
+
+	/* XIRQ[1]: LAN, UART, I2C, USB, PCI, FPGA */
+	SET_XIRQ_TRIGGER(1, XIRQ_TRIGGER_LOWLEVEL);
+
+	/* XIRQ[2]: Extend Slot 1-9 */
+	/* SET_XIRQ_TRIGGER(2, XIRQ_TRIGGER_LOWLEVEL); */
+
+#if defined(CONFIG_EXT_SERIAL_IRQ_LEVEL) &&	\
+    defined(CONFIG_ETHERNET_IRQ_LEVEL) &&	\
+    (CONFIG_EXT_SERIAL_IRQ_LEVEL != CONFIG_ETHERNET_IRQ_LEVEL)
+# error CONFIG_EXT_SERIAL_IRQ_LEVEL != CONFIG_ETHERNET_IRQ_LEVEL
+#endif
+
+#if defined(CONFIG_EXT_SERIAL_IRQ_LEVEL)
+	set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
+#elif defined(CONFIG_ETHERNET_IRQ_LEVEL)
+	set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_ETHERNET_IRQ_LEVEL));
+#endif
+}
+
+/*
+ * initialise the rest of the unit hardware after gdbstub is ready
+ */
+asmlinkage void __init unit_setup(void)
+{
+
+}
+
+/*
+ * initialise the external interrupts used by a unit of this type
+ */
+void __init unit_init_IRQ(void)
+{
+	unsigned int extnum;
+
+	for (extnum = 0 ; extnum < NR_XIRQS ; extnum++) {
+		switch (GET_XIRQ_TRIGGER(extnum)) {
+			/* LEVEL triggered interrupts should be made
+			 * post-ACK'able as they hold their lines until
+			 * serviced
+			 */
+		case XIRQ_TRIGGER_HILEVEL:
+		case XIRQ_TRIGGER_LOWLEVEL:
+			mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
+			break;
+		default:
+			break;
+		}
+	}
+
+#define IRQCTL	__SYSREG(0xd5000090, u32)
+	IRQCTL |= 0x02;
+}