121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
|
/***************************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* linux/arch/m68knommu/platform/5206e/config.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
|
||
|
|
*/
|
||
|
|
|
||
|
|
/***************************************************************************/
|
||
|
|
|
||
|
|
#include <linux/config.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/sched.h>
|
||
|
|
#include <linux/param.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <asm/irq.h>
|
||
|
|
#include <asm/dma.h>
|
||
|
|
#include <asm/traps.h>
|
||
|
|
#include <asm/machdep.h>
|
||
|
|
#include <asm/coldfire.h>
|
||
|
|
#include <asm/mcftimer.h>
|
||
|
|
#include <asm/mcfsim.h>
|
||
|
|
#include <asm/mcfdma.h>
|
||
|
|
#include <asm/irq.h>
|
||
|
|
|
||
|
|
/***************************************************************************/
|
||
|
|
|
||
|
|
void coldfire_tick(void);
|
||
|
|
void coldfire_timer_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
|
||
|
|
unsigned long coldfire_timer_offset(void);
|
||
|
|
void coldfire_trap_init(void);
|
||
|
|
void coldfire_reset(void);
|
||
|
|
|
||
|
|
/***************************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* DMA channel base address table.
|
||
|
|
*/
|
||
|
|
unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
|
||
|
|
MCF_MBAR + MCFDMA_BASE0,
|
||
|
|
MCF_MBAR + MCFDMA_BASE1,
|
||
|
|
};
|
||
|
|
|
||
|
|
unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
|
||
|
|
|
||
|
|
/***************************************************************************/
|
||
|
|
|
||
|
|
void mcf_autovector(unsigned int vec)
|
||
|
|
{
|
||
|
|
volatile unsigned char *mbar;
|
||
|
|
unsigned char icr;
|
||
|
|
|
||
|
|
if ((vec >= 25) && (vec <= 31)) {
|
||
|
|
vec -= 25;
|
||
|
|
mbar = (volatile unsigned char *) MCF_MBAR;
|
||
|
|
icr = MCFSIM_ICR_AUTOVEC | (vec << 3);
|
||
|
|
*(mbar + MCFSIM_ICR1 + vec) = icr;
|
||
|
|
vec = 0x1 << (vec + 1);
|
||
|
|
mcf_setimr(mcf_getimr() & ~vec);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/***************************************************************************/
|
||
|
|
|
||
|
|
void mcf_settimericr(unsigned int timer, unsigned int level)
|
||
|
|
{
|
||
|
|
volatile unsigned char *icrp;
|
||
|
|
unsigned int icr, imr;
|
||
|
|
|
||
|
|
if (timer <= 2) {
|
||
|
|
switch (timer) {
|
||
|
|
case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
|
||
|
|
default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
|
||
|
|
}
|
||
|
|
|
||
|
|
icrp = (volatile unsigned char *) (MCF_MBAR + icr);
|
||
|
|
*icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
|
||
|
|
mcf_setimr(mcf_getimr() & ~imr);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/***************************************************************************/
|
||
|
|
|
||
|
|
int mcf_timerirqpending(int timer)
|
||
|
|
{
|
||
|
|
unsigned int imr = 0;
|
||
|
|
|
||
|
|
switch (timer) {
|
||
|
|
case 1: imr = MCFSIM_IMR_TIMER1; break;
|
||
|
|
case 2: imr = MCFSIM_IMR_TIMER2; break;
|
||
|
|
default: break;
|
||
|
|
}
|
||
|
|
return (mcf_getipr() & imr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/***************************************************************************/
|
||
|
|
|
||
|
|
void config_BSP(char *commandp, int size)
|
||
|
|
{
|
||
|
|
mcf_setimr(MCFSIM_IMR_MASKALL);
|
||
|
|
|
||
|
|
#if defined(CONFIG_BOOTPARAM)
|
||
|
|
strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
|
||
|
|
commandp[size-1] = 0;
|
||
|
|
#elif defined(CONFIG_NETtel)
|
||
|
|
/* Copy command line from FLASH to local buffer... */
|
||
|
|
memcpy(commandp, (char *) 0xf0004000, size);
|
||
|
|
commandp[size-1] = 0;
|
||
|
|
#else
|
||
|
|
memset(commandp, 0, size);
|
||
|
|
#endif /* CONFIG_NETtel */
|
||
|
|
|
||
|
|
mach_sched_init = coldfire_timer_init;
|
||
|
|
mach_tick = coldfire_tick;
|
||
|
|
mach_gettimeoffset = coldfire_timer_offset;
|
||
|
|
mach_trap_init = coldfire_trap_init;
|
||
|
|
mach_reset = coldfire_reset;
|
||
|
|
}
|
||
|
|
|
||
|
|
/***************************************************************************/
|