summaryrefslogtreecommitdiffstats
path: root/arch/m68knommu/platform/528x/config.c
blob: a1d1a61c4fe667188fc1979df0630d7f5c7a547f (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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
/***************************************************************************/

/*
 *	linux/arch/m68knommu/platform/528x/config.c
 *
 *	Sub-architcture dependant initialization code for the Motorola
 *	5280 and 5282 CPUs.
 *
 *	Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
 *	Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
 */

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

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

#ifdef CONFIG_MTD_PARTITIONS
#include <linux/mtd/partitions.h>
#endif

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

static struct mcf_platform_uart m528x_uart_platform[] = {
	{
		.mapbase	= MCF_MBAR + MCFUART_BASE1,
		.irq		= MCFINT_VECBASE + MCFINT_UART0,
	},
	{
		.mapbase 	= MCF_MBAR + MCFUART_BASE2,
		.irq		= MCFINT_VECBASE + MCFINT_UART0 + 1,
	},
	{
		.mapbase 	= MCF_MBAR + MCFUART_BASE3,
		.irq		= MCFINT_VECBASE + MCFINT_UART0 + 2,
	},
	{ },
};

static struct platform_device m528x_uart = {
	.name			= "mcfuart",
	.id			= 0,
	.dev.platform_data	= m528x_uart_platform,
};

static struct resource m528x_fec_resources[] = {
	{
		.start		= MCF_MBAR + 0x1000,
		.end		= MCF_MBAR + 0x1000 + 0x7ff,
		.flags		= IORESOURCE_MEM,
	},
	{
		.start		= 64 + 23,
		.end		= 64 + 23,
		.flags		= IORESOURCE_IRQ,
	},
	{
		.start		= 64 + 27,
		.end		= 64 + 27,
		.flags		= IORESOURCE_IRQ,
	},
	{
		.start		= 64 + 29,
		.end		= 64 + 29,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device m528x_fec = {
	.name			= "fec",
	.id			= 0,
	.num_resources		= ARRAY_SIZE(m528x_fec_resources),
	.resource		= m528x_fec_resources,
};


static struct platform_device *m528x_devices[] __initdata = {
	&m528x_uart,
	&m528x_fec,
};

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

#define	INTC0	(MCF_MBAR + MCFICM_INTC0)

static void __init m528x_uart_init_line(int line, int irq)
{
	u8 port;
	u32 imr;

	if ((line < 0) || (line > 2))
		return;

	/* level 6, line based priority */
	writeb(0x30+line, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);

	imr = readl(INTC0 + MCFINTC_IMRL);
	imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
	writel(imr, INTC0 + MCFINTC_IMRL);

	/* make sure PUAPAR is set for UART0 and UART1 */
	if (line < 2) {
		port = readb(MCF_MBAR + MCF5282_GPIO_PUAPAR);
		port |= (0x03 << (line * 2));
		writeb(port, MCF_MBAR + MCF5282_GPIO_PUAPAR);
	}
}

static void __init m528x_uarts_init(void)
{
	const int nrlines = ARRAY_SIZE(m528x_uart_platform);
	int line;

	for (line = 0; (line < nrlines); line++)
		m528x_uart_init_line(line, m528x_uart_platform[line].irq);
}

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

static void __init m528x_fec_init(void)
{
	u32 imr;
	u16 v16;

	/* Unmask FEC interrupts at ColdFire interrupt controller */
	writeb(0x28, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 23);
	writeb(0x27, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 27);
	writeb(0x26, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 29);

	imr = readl(MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH);
	imr &= ~0xf;
	writel(imr, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH);
	imr = readl(MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL);
	imr &= ~0xff800001;
	writel(imr, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL);

	/* Set multi-function pins to ethernet mode for fec0 */
	v16 = readw(MCF_IPSBAR + 0x100056);
	writew(v16 | 0xf00, MCF_IPSBAR + 0x100056);
	writeb(0xc0, MCF_IPSBAR + 0x100058);
}

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

void mcf_disableall(void)
{
	*((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH)) = 0xffffffff;
	*((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL)) = 0xffffffff;
}

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

void mcf_autovector(unsigned int vec)
{
	/* Everything is auto-vectored on the 5272 */
}

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

static void m528x_cpu_reset(void)
{
	local_irq_disable();
	__raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
}

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

#ifdef CONFIG_WILDFIRE
void wildfire_halt(void)
{
	writeb(0, 0x30000007);
	writeb(0x2, 0x30000007);
}
#endif

#ifdef CONFIG_WILDFIREMOD
void wildfiremod_halt(void)
{
	printk(KERN_INFO "WildFireMod hibernating...\n");

	/* Set portE.5 to Digital IO */
	MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));

	/* Make portE.5 an output */
	MCF5282_GPIO_DDRE |= (1 << 5);

	/* Now toggle portE.5 from low to high */
	MCF5282_GPIO_PORTE &= ~(1 << 5);
	MCF5282_GPIO_PORTE |= (1 << 5);

	printk(KERN_EMERG "Failed to hibernate. Halting!\n");
}
#endif

void __init config_BSP(char *commandp, int size)
{
	mcf_disableall();

#ifdef CONFIG_WILDFIRE
	mach_halt = wildfire_halt;
#endif
#ifdef CONFIG_WILDFIREMOD
	mach_halt = wildfiremod_halt;
#endif
}

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

static int __init init_BSP(void)
{
	mach_reset = m528x_cpu_reset;
	m528x_uarts_init();
	m528x_fec_init();
	platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices));
	return 0;
}

arch_initcall(init_BSP);

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