1/*
2 * arch/v850/kernel/ma.c -- V850E/MA series of cpu chips
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	/* 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_MACH_IRQS,	1, 7 },
38	{ "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM,	1, 5 },
39	{ "DMA", IRQ_INTDMA(0), IRQ_INTDMA_NUM,	1, 2 },
40	{ "CSI", IRQ_INTCSI(0), IRQ_INTCSI_NUM,	4, 4 },
41	{ "SER", IRQ_INTSER(0), IRQ_INTSER_NUM,	4, 3 },
42	{ "SR",	 IRQ_INTSR(0),	IRQ_INTSR_NUM, 	4, 4 },
43	{ "ST",  IRQ_INTST(0), 	IRQ_INTST_NUM, 	4, 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 ma_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 ma_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
58{
59	/* We only know about the first two UART channels (though
60	   specific chips may have more).  */
61	if (chan < 2) {
62		unsigned bits = 0x3 << (chan * 3);
63		/* Specify that the relevant pins on the chip should do
64		   serial I/O, not direct I/O.  */
65		MA_PORT4_PMC |= bits;
66		/* Specify that we're using the UART, not the CSI device.  */
67		MA_PORT4_PFC |= bits;
68	}
69}
70