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/*
* linux/arch/m68knommu/platform/MC68VZ328/de2/config.c
*
* Copyright (C) 1993 Hamish Macdonald
* Copyright (C) 1999 D. Jeff Dionne
* Copyright (C) 2001 Georges Menie, Ken Desmet
*
* 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.
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/kd.h>
#include <linux/netdevice.h>
#include <asm/setup.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/machdep.h>
#include <asm/MC68VZ328.h>
#ifdef CONFIG_INIT_LCD
#include "screen.h"
#endif
/* with a 33.16 MHz clock, this will give usec resolution to the time functions */
#define CLOCK_SOURCE TCTL_CLKSOURCE_SYSCLK
#define CLOCK_PRE 7
#define TICKS_PER_JIFFY 41450
static void
dragen2_sched_init(irqreturn_t (*timer_routine) (int, void *, struct pt_regs *))
{
/* disable timer 1 */
TCTL = 0;
/* set ISR */
if (request_irq(TMR_IRQ_NUM, timer_routine, IRQ_FLG_LOCK, "timer", NULL))
panic("Unable to attach timer interrupt\n");
/* Restart mode, Enable int, Set clock source */
TCTL = TCTL_OM | TCTL_IRQEN | CLOCK_SOURCE;
TPRER = CLOCK_PRE;
TCMP = TICKS_PER_JIFFY;
/* Enable timer 1 */
TCTL |= TCTL_TEN;
}
static void dragen2_tick(void)
{
/* Reset Timer1 */
TSTAT &= 0;
}
static unsigned long dragen2_gettimeoffset(void)
{
unsigned long ticks = TCN, offset = 0;
/* check for pending interrupt */
if (ticks < (TICKS_PER_JIFFY >> 1) && (ISR & (1 << TMR_IRQ_NUM)))
offset = 1000000 / HZ;
ticks = (ticks * 1000000 / HZ) / TICKS_PER_JIFFY;
return ticks + offset;
}
static void dragen2_gettod(int *year, int *mon, int *day, int *hour,
int *min, int *sec)
{
long now = RTCTIME;
*year = *mon = *day = 1;
*hour = (now >> 24) % 24;
*min = (now >> 16) % 60;
*sec = now % 60;
}
static void dragen2_reset(void)
{
local_irq_disable();
#ifdef CONFIG_INIT_LCD
PBDATA |= 0x20; /* disable CCFL light */
PKDATA |= 0x4; /* disable LCD controller */
LCKCON = 0;
#endif
__asm__ __volatile__(
"reset\n\t"
"moveal #0x04000000, %a0\n\t"
"moveal 0(%a0), %sp\n\t"
"moveal 4(%a0), %a0\n\t"
"jmp (%a0)"
);
}
static void init_hardware(void)
{
#ifdef CONFIG_DIRECT_IO_ACCESS
SCR = 0x10; /* allow user access to internal registers */
#endif
/* CSGB Init */
CSGBB = 0x4000;
CSB = 0x1a1;
/* CS8900 init */
/* PK3: hardware sleep function pin, active low */
PKSEL |= PK(3); /* select pin as I/O */
PKDIR |= PK(3); /* select pin as output */
PKDATA |= PK(3); /* set pin high */
/* PF5: hardware reset function pin, active high */
PFSEL |= PF(5); /* select pin as I/O */
PFDIR |= PF(5); /* select pin as output */
PFDATA &= ~PF(5); /* set pin low */
/* cs8900 hardware reset */
PFDATA |= PF(5);
{ int i; for (i = 0; i < 32000; ++i); }
PFDATA &= ~PF(5);
/* INT1 enable (cs8900 IRQ) */
PDPOL &= ~PD(1); /* active high signal */
PDIQEG &= ~PD(1);
PDIRQEN |= PD(1); /* IRQ enabled */
#ifdef CONFIG_68328_SERIAL_UART2
/* Enable RXD TXD port bits to enable UART2 */
PJSEL &= ~(PJ(5) | PJ(4));
#endif
#ifdef CONFIG_INIT_LCD
/* initialize LCD controller */
LSSA = (long) screen_bits;
LVPW = 0x14;
LXMAX = 0x140;
LYMAX = 0xef;
LRRA = 0;
LPXCD = 3;
LPICF = 0x08;
LPOLCF = 0;
LCKCON = 0x80;
PCPDEN = 0xff;
PCSEL = 0;
/* Enable LCD controller */
PKDIR |= 0x4;
PKSEL |= 0x4;
PKDATA &= ~0x4;
/* Enable CCFL backlighting circuit */
PBDIR |= 0x20;
PBSEL |= 0x20;
PBDATA &= ~0x20;
/* contrast control register */
PFDIR |= 0x1;
PFSEL &= ~0x1;
PWMR = 0x037F;
#endif
}
void config_BSP(char *command, int size)
{
printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
#if defined(CONFIG_BOOTPARAM)
strncpy(command, CONFIG_BOOTPARAM_STRING, size);
command[size-1] = 0;
#else
memset(command, 0, size);
#endif
init_hardware();
mach_sched_init = (void *)dragen2_sched_init;
mach_tick = dragen2_tick;
mach_gettimeoffset = dragen2_gettimeoffset;
mach_reset = dragen2_reset;
mach_gettod = dragen2_gettod;
}
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