1/*
2 * arch/v850/kernel/teg.c -- NB85E-TEG cpu chip
3 *
4 *  Copyright (C) 2001,02,03  NEC Electronics Corporation
5 *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License.  See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
13
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/mm.h>
17#include <linux/swap.h>
18#include <linux/bootmem.h>
19#include <linux/irq.h>
20
21#include <asm/atomic.h>
22#include <asm/page.h>
23#include <asm/machdep.h>
24#include <asm/v850e_timer_d.h>
25
26#include "mach.h"
27
28void __init mach_sched_init (struct irqaction *timer_action)
29{
30	/* Select timer interrupt instead of external pin.  */
31	TEG_ISS |= 0x1;
32	/* Start hardware timer.  */
33	v850e_timer_d_configure (0, HZ);
34	/* Install timer interrupt handler.  */
35	setup_irq (IRQ_INTCMD(0), timer_action);
36}
37
38static struct v850e_intc_irq_init irq_inits[] = {
39	{ "IRQ", 0,		NUM_CPU_IRQS,	1, 7 },
40	{ "CMD", IRQ_INTCMD(0),	IRQ_INTCMD_NUM,	1, 5 },
41	{ "SER", IRQ_INTSER(0),	IRQ_INTSER_NUM,	1, 3 },
42	{ "SR",	 IRQ_INTSR(0),	IRQ_INTSR_NUM,	1, 4 },
43	{ "ST",	 IRQ_INTST(0),	IRQ_INTST_NUM,	1, 5 },
44	{ 0 }
45};
46#define NUM_IRQ_INITS (ARRAY_SIZE(irq_inits) - 1)
47
48static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
49
50/* Initialize MA chip interrupts.  */
51void __init teg_init_irqs (void)
52{
53	v850e_intc_init_irq_types (irq_inits, hw_itypes);
54}
55
56/* Called before configuring an on-chip UART.  */
57void teg_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
58{
59	/* Enable UART I/O pins instead of external interrupt pins, and
60	   UART interrupts instead of external pin interrupts.  */
61	TEG_ISS |= 0x4E;
62}
63