aboutsummaryrefslogtreecommitdiff
path: root/arch/m68knommu/platform/5206/config.c
blob: 481617a23d092f84b832c5ef33f791dd1c913413 (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
115
116
117
118
/***************************************************************************/

/*
 *	linux/arch/m68knommu/platform/5206/config.c
 *
 *	Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
 * 	Copyright (C) 2000-2001, Lineo Inc. (www.lineo.com) 
 */

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

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>

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

static struct mcf_platform_uart m5206_uart_platform[] = {
	{
		.mapbase	= MCF_MBAR + MCFUART_BASE1,
		.irq		= 73,
	},
	{
		.mapbase 	= MCF_MBAR + MCFUART_BASE2,
		.irq		= 74,
	},
	{ },
};

static struct platform_device m5206_uart = {
	.name			= "mcfuart",
	.id			= 0,
	.dev.platform_data	= m5206_uart_platform,
};

static struct platform_device *m5206_devices[] __initdata = {
	&m5206_uart,
};

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

static void __init m5206_uart_init_line(int line, int irq)
{
	if (line == 0) {
		writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
		writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
		mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
	} else if (line == 1) {
		writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
		writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
		mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
	}
}

static void __init m5206_uarts_init(void)
{
	const int nrlines = ARRAY_SIZE(m5206_uart_platform);
	int line;

	for (line = 0; (line < nrlines); line++)
		m5206_uart_init_line(line, m5206_uart_platform[line].irq);
}

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

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);
	}
}

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

void m5206_cpu_reset(void)
{
	local_irq_disable();
	/* Set watchdog to soft reset, and enabled */
	__raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR);
	for (;;)
		/* wait for watchdog to timeout */;
}

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

void __init config_BSP(char *commandp, int size)
{
	mcf_setimr(MCFSIM_IMR_MASKALL);
	mach_reset = m5206_cpu_reset;
}

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

static int __init init_BSP(void)
{
	m5206_uarts_init();
	platform_add_devices(m5206_devices, ARRAY_SIZE(m5206_devices));
	return 0;
}

arch_initcall(init_BSP);

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