1/*
2 * arch/v850/kernel/me2.c -- V850E/ME2 chip-specific support
3 *
4 *  Copyright (C) 2003  NEC Corporation
5 *  Copyright (C) 2003  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	/* Start hardware timer.  */
31	v850e_timer_d_configure (0, HZ);
32	/* Install timer interrupt handler.  */
33	setup_irq (IRQ_INTCMD(0), timer_action);
34}
35
36static struct v850e_intc_irq_init irq_inits[] = {
37	{ "IRQ",    0,                NUM_CPU_IRQS,      1, 7 },
38	{ "INTP",   IRQ_INTP(0),      IRQ_INTP_NUM,      1, 5 },
39	{ "CMD",    IRQ_INTCMD(0),    IRQ_INTCMD_NUM,    1, 3 },
40	{ "UBTIRE", IRQ_INTUBTIRE(0), IRQ_INTUBTIRE_NUM, 5, 4 },
41	{ "UBTIR",  IRQ_INTUBTIR(0),  IRQ_INTUBTIR_NUM,  5, 4 },
42	{ "UBTIT",  IRQ_INTUBTIT(0),  IRQ_INTUBTIT_NUM,  5, 4 },
43	{ "UBTIF",  IRQ_INTUBTIF(0),  IRQ_INTUBTIF_NUM,  5, 4 },
44	{ "UBTITO", IRQ_INTUBTITO(0), IRQ_INTUBTITO_NUM, 5, 4 },
45	{ 0 }
46};
47#define NUM_IRQ_INITS (ARRAY_SIZE(irq_inits) - 1)
48
49static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
50
51/* Initialize V850E/ME2 chip interrupts.  */
52void __init me2_init_irqs (void)
53{
54	v850e_intc_init_irq_types (irq_inits, hw_itypes);
55}
56
57/* Called before configuring an on-chip UART.  */
58void me2_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
59{
60	if (chan == 0) {
61		/* Specify that the relevent pins on the chip should do
62		   serial I/O, not direct I/O.  */
63		ME2_PORT1_PMC |= 0xC;
64		/* Specify that we're using the UART, not the CSI device. */
65		ME2_PORT1_PFC |= 0xC;
66	} else if (chan == 1) {
67		/* Specify that the relevent pins on the chip should do
68		   serial I/O, not direct I/O.  */
69		ME2_PORT2_PMC |= 0x6;
70		/* Specify that we're using the UART, not the CSI device. */
71		ME2_PORT2_PFC |= 0x6;
72	}
73}
74