aboutsummaryrefslogtreecommitdiffstats
path: root/arch/m68knommu/platform/5249/config.c
blob: d6706079d64ab4ba1f08a1a64aee8902ec57ab5e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
/***************************************************************************/

/*
 *	linux/arch/m68knommu/platform/5249/config.c
 *
 *	Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com)
 */

/***************************************************************************/

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/param.h>
#include <linux/init.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>

/***************************************************************************/

void coldfire_tick(void);
void coldfire_timer_init(irq_handler_t handler);
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,
        MCF_MBAR + MCFDMA_BASE2,
        MCF_MBAR + MCFDMA_BASE3,
};

unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];

/***************************************************************************/

void mcf_autovector(unsigned int vec)
{
	volatile unsigned char  *mbar;

	if ((vec >= 25) && (vec <= 31)) {
		mbar = (volatile unsigned char *) MCF_MBAR;
		vec = 0x1 << (vec - 24);
		*(mbar + MCFSIM_AVR) |= vec;
		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;
#else
	memset(commandp, 0, size);
#endif

	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;
}

/***************************************************************************/