/****************************************************************************/
/*
* linux/arch/sh/boards/snapgear/setup.c
*
* Copyright (C) 2002 David McCullough <davidm@snapgear.com>
* Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org>
*
* Based on files with the following comments:
*
* Copyright (C) 2000 Kazumoto Kojima
*
* Modified for 7751 Solution Engine by
* Ian da Silva and Jeremy Siegel, 2001.
*/
/****************************************************************************/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <asm/machvec.h>
#include <asm/mach/io.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/cpu/timer.h>
extern void (*board_time_init)(void);
extern void secureedge5410_rtc_init(void);
extern void pcibios_init(void);
/****************************************************************************/
/*
* EraseConfig handling functions
*/
static irqreturn_t eraseconfig_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
volatile char dummy __attribute__((unused)) = * (volatile char *) 0xb8000000;
printk("SnapGear: erase switch interrupt!\n");
return IRQ_HANDLED;
}
static int __init eraseconfig_init(void)
{
printk("SnapGear: EraseConfig init\n");
/* Setup "EraseConfig" switch on external IRQ 0 */
if (request_irq(IRL0_IRQ, eraseconfig_interrupt, SA_INTERRUPT,
"Erase Config", NULL))
printk("SnapGear: failed to register IRQ%d for Reset witch\n",
IRL0_IRQ);
else
printk("SnapGear: registered EraseConfig switch on IRQ%d\n",
IRL0_IRQ);
return(0);
}
module_init(eraseconfig_init);
/****************************************************************************/
/*
* Initialize IRQ setting
*
* IRL0 = erase switch
* IRL1 = eth0
* IRL2 = eth1
* IRL3 = crypto
*/
static void __init init_snapgear_IRQ(void)
{
/* enable individual interrupt mode for externals */
ctrl_outw(ctrl_inw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
printk("Setup SnapGear IRQ/IPR ...\n");
make_ipr_irq(IRL0_IRQ, IRL0_IPR_ADDR, IRL0_IPR_POS, IRL0_PRIORITY);
make_ipr_irq(IRL1_IRQ, IRL1_IPR_ADDR, IRL1_IPR_POS, IRL1_PRIORITY);
make_ipr_irq(IRL2_IRQ, IRL2_IPR_ADDR, IRL2_IPR_POS, IRL2_PRIORITY);
make_ipr_irq(IRL3_IRQ, IRL3_IPR_ADDR, IRL3_IPR_POS, IRL3_PRIORITY);
}
/****************************************************************************/
/*
* Fast poll interrupt simulator.
*/
/*
* Leave all of the fast timer/fast poll stuff commented out for now, since
* it's not clear whether it actually works or not. Since it wasn't being used
* at all in 2.4, we'll assume it's not sane for 2.6 either.. -- PFM
*/
#if 0
#define FAST_POLL 1000
//#define FAST_POLL_INTR
#define FASTTIMER_IRQ 17
#define FASTTIMER_IPR_ADDR INTC_IPRA
#define FASTTIMER_IPR_POS 2
#define FASTTIMER_PRIORITY 3
#ifdef FAST_POLL_INTR
#define TMU1_TCR_INIT 0x0020
#else
#define TMU1_TCR_INIT 0
#endif
#define TMU_TSTR_INIT 1
#define TMU1_TCR_CALIB 0x0000
#ifdef FAST_POLL_INTR
static void fast_timer_irq(int irq, void *dev_instance, struct pt_regs *regs)
{
unsigned long timer_status;
timer_status = ctrl_inw(TMU1_TCR);
timer_status &= ~0x100;
ctrl_outw(timer_status, TMU1_TCR);
}
#endif
/*
* return the current ticks on the fast timer
*/
unsigned long fast_timer_count(void)
{
return(ctrl_inl(TMU1_TCNT));
}
/*
* setup a fast timer for profiling etc etc
*/
static void setup_fast_timer()
{
unsigned long interval;
#ifdef FAST_POLL_INTR
interval = (current_cpu_data.module_clock/4 + FAST_POLL/2) / FAST_POLL;
make_ipr_irq(FASTTIMER_IRQ, FASTTIMER_IPR_ADDR, FASTTIMER_IPR_POS,
FASTTIMER_PRIORITY);
printk("SnapGear: %dHz fast timer on IRQ %d\n",FAST_POLL,FASTTIMER_IRQ);
if (request_irq(FASTTIMER_IRQ, fast_timer_irq, 0, "SnapGear fast timer",
NULL) != 0)
printk("%s(%d): request_irq() failed?\n", __FILE__, __LINE__);
#else
printk("SnapGear: fast timer running\n",FAST_POLL,FASTTIMER_IRQ);
interval = 0xffffffff;
#endif
ctrl_outb(ctrl_inb(TMU_TSTR) & ~0x2, TMU_TSTR); /* disable timer 1 */
ctrl_outw(TMU1_TCR_INIT, TMU1_TCR);
ctrl_outl(interval, TMU1_TCOR);
ctrl_outl(interval, TMU1_TCNT);
ctrl_outb(ctrl_inb(TMU_TSTR) | 0x2, TMU_TSTR); /* enable timer 1 */
printk("Timer count 1 = 0x%x\n", fast_timer_count());
udelay(1000);
printk("Timer count 2 = 0x%x\n", fast_timer_count());
}
#endif
/****************************************************************************/
const char *get_system_type(void)
{
return "SnapGear SecureEdge5410";
}
/*
* The Machine Vector
*/
struct sh_machine_vector mv_snapgear __initmv = {
.mv_nr_irqs = 72,
.mv_inb = snapgear_inb,
.mv_inw = snapgear_inw,
.mv_inl = snapgear_inl,
.mv_outb = snapgear_outb,
.mv_outw = snapgear_outw,
.mv_outl = snapgear_outl,
.mv_inb_p = snapgear_inb_p,
.mv_inw_p = snapgear_inw,
.mv_inl_p = snapgear_inl,
.mv_outb_p = snapgear_outb_p,
.mv_outw_p = snapgear_outw,
.mv_outl_p = snapgear_outl,
.mv_isa_port2addr = snapgear_isa_port2addr,
.mv_init_irq = init_snapgear_IRQ,
};
ALIAS_MV(snapgear)
/*
* Initialize the board
*/
int __init platform_setup(void)
{
board_time_init = secureedge5410_rtc_init;
return 0;
}
