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/*
* arch/v850/kernel/ma.c -- V850E/MA series of cpu chips
*
* Copyright (C) 2001,02,03 NEC Electronics Corporation
* Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
* archive for more details.
*
* Written by Miles Bader <miles@gnu.org>
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/bootmem.h>
#include <linux/irq.h>
#include <asm/atomic.h>
#include <asm/page.h>
#include <asm/machdep.h>
#include <asm/v850e_timer_d.h>
#include "mach.h"
void __init mach_sched_init (struct irqaction *timer_action)
{
/* Start hardware timer. */
v850e_timer_d_configure (0, HZ);
/* Install timer interrupt handler. */
setup_irq (IRQ_INTCMD(0), timer_action);
}
static struct v850e_intc_irq_init irq_inits[] = {
{ "IRQ", 0, NUM_MACH_IRQS, 1, 7 },
{ "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
{ "DMA", IRQ_INTDMA(0), IRQ_INTDMA_NUM, 1, 2 },
{ "CSI", IRQ_INTCSI(0), IRQ_INTCSI_NUM, 4, 4 },
{ "SER", IRQ_INTSER(0), IRQ_INTSER_NUM, 4, 3 },
{ "SR", IRQ_INTSR(0), IRQ_INTSR_NUM, 4, 4 },
{ "ST", IRQ_INTST(0), IRQ_INTST_NUM, 4, 5 },
{ 0 }
};
#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
/* Initialize MA chip interrupts. */
void __init ma_init_irqs (void)
{
v850e_intc_init_irq_types (irq_inits, hw_itypes);
}
/* Called before configuring an on-chip UART. */
void ma_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
{
/* We only know about the first two UART channels (though
specific chips may have more). */
if (chan < 2) {
unsigned bits = 0x3 << (chan * 3);
/* Specify that the relevant pins on the chip should do
serial I/O, not direct I/O. */
MA_PORT4_PMC |= bits;
/* Specify that we're using the UART, not the CSI device. */
MA_PORT4_PFC |= bits;
}
}
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