aboutsummaryrefslogtreecommitdiff
path: root/arch/ppc/platforms/4xx/redwood6.c
blob: b13116691289fa19171a45803afbb04b538911c5 (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
/*
 * arch/ppc/platforms/4xx/redwood6.c
 *
 * Author: Armin Kuster <akuster@mvista.com>
 *
 * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
 * the terms of the GNU General Public License version 2.  This program
 * is licensed "as is" without any warranty of any kind, whether express
 * or implied.
 */

#include <linux/config.h>
#include <linux/init.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/ppc4xx_pic.h>
#include <linux/delay.h>
#include <asm/machdep.h>

/*
 * Define external IRQ senses and polarities.
 */
unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 7 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 8 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 9 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 0 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 1 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 2 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 3 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 4 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 5 */
	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* Ext Int 6 */
};

static struct resource smc91x_resources[] = {
	[0] = {
		.start	= SMC91111_BASE_ADDR,
		.end	= SMC91111_BASE_ADDR + SMC91111_REG_SIZE - 1,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= SMC91111_IRQ,
		.end	= SMC91111_IRQ,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device smc91x_device = {
	.name		= "smc91x",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(smc91x_resources),
	.resource	= smc91x_resources,
};

static struct platform_device *redwood6_devs[] __initdata = {
	&smc91x_device,
};

static int __init
redwood6_platform_add_devices(void)
{
	return platform_add_devices(redwood6_devs, ARRAY_SIZE(redwood6_devs));
}


void __init
redwood6_setup_arch(void)
{
#ifdef CONFIG_IDE
	void *xilinx, *xilinx_1, *xilinx_2;
	unsigned short us_reg5;
#endif

	ppc4xx_setup_arch();

#ifdef CONFIG_IDE
	xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10);
	/* init xilinx control registers - enable ide mux, clear reset bit */
	if (!xilinx) {
		printk(KERN_CRIT
		       "redwood6_setup_arch() xilinxi ioremap failed\n");
		return;
	}
	xilinx_1 = xilinx + 0xa;
	xilinx_2 = xilinx + 0xe;

	us_reg5 = readb(xilinx_1);
	writeb(0x01d1, xilinx_1);
	writeb(0x0008, xilinx_2);

	udelay(10 * 1000);

	writeb(0x01d1, xilinx_1);
	writeb(0x0008, xilinx_2);
#endif

#ifdef DEBUG_BRINGUP
	bd_t *bip = (bd_t *) __res;
	printk("\n");
	printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
	printk("\n");
	printk("bi_s_version\t %s\n", bip->bi_s_version);
	printk("bi_r_version\t %s\n", bip->bi_r_version);
	printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
	       bip->bi_memsize / (1024 * 1000));
	printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
	       bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2],
	       bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]);

	printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
	       bip->bi_intfreq, bip->bi_intfreq / 1000000);

	printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
	       bip->bi_busfreq, bip->bi_busfreq / 1000000);
	printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n",
	       bip->bi_tbfreq, bip->bi_tbfreq / 1000000);

	printk("\n");
#endif

	/* Identify the system */
	printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n");
	printk(KERN_INFO
	       "Port by MontaVista Software, Inc. (source@mvista.com)\n");

	device_initcall(redwood6_platform_add_devices);
}

void __init
redwood6_map_io(void)
{
	int i;

	ppc4xx_map_io();
	for (i = 0; i < 16; i++) {
		unsigned long v, p;

		/* 0x400x0000 -> 0xe00x0000 */
		p = 0x40000000 | (i << 16);
		v = STBx25xx_IO_BASE | (i << 16);

		io_block_mapping(v, p, PAGE_SIZE,
				 _PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) |
				 _PAGE_GUARDED);
	}
}

void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
	      unsigned long r6, unsigned long r7)
{
	ppc4xx_init(r3, r4, r5, r6, r7);

	ppc_md.setup_arch = redwood6_setup_arch;
	ppc_md.setup_io_mappings = redwood6_map_io;
}