Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq
[linux-2.6] / arch / ppc / platforms / 4xx / redwood6.c
1 /*
2  * Author: Armin Kuster <akuster@mvista.com>
3  *
4  * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
5  * the terms of the GNU General Public License version 2.  This program
6  * is licensed "as is" without any warranty of any kind, whether express
7  * or implied.
8  */
9
10 #include <linux/init.h>
11 #include <linux/pagemap.h>
12 #include <linux/platform_device.h>
13 #include <linux/ioport.h>
14 #include <asm/io.h>
15 #include <asm/ppc4xx_pic.h>
16 #include <linux/delay.h>
17 #include <asm/machdep.h>
18
19 /*
20  * Define external IRQ senses and polarities.
21  */
22 unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
23         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 7 */
24         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 8 */
25         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 9 */
26         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 0 */
27         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 1 */
28         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 2 */
29         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 3 */
30         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 4 */
31         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 5 */
32         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 6 */
33 };
34
35 static struct resource smc91x_resources[] = {
36         [0] = {
37                 .start  = SMC91111_BASE_ADDR,
38                 .end    = SMC91111_BASE_ADDR + SMC91111_REG_SIZE - 1,
39                 .flags  = IORESOURCE_MEM,
40         },
41         [1] = {
42                 .start  = SMC91111_IRQ,
43                 .end    = SMC91111_IRQ,
44                 .flags  = IORESOURCE_IRQ,
45         },
46 };
47
48 static struct platform_device smc91x_device = {
49         .name           = "smc91x",
50         .id             = 0,
51         .num_resources  = ARRAY_SIZE(smc91x_resources),
52         .resource       = smc91x_resources,
53 };
54
55 static struct platform_device *redwood6_devs[] __initdata = {
56         &smc91x_device,
57 };
58
59 static int __init
60 redwood6_platform_add_devices(void)
61 {
62         return platform_add_devices(redwood6_devs, ARRAY_SIZE(redwood6_devs));
63 }
64
65
66 void __init
67 redwood6_setup_arch(void)
68 {
69 #ifdef CONFIG_IDE
70         void *xilinx, *xilinx_1, *xilinx_2;
71         unsigned short us_reg5;
72 #endif
73
74         ppc4xx_setup_arch();
75
76 #ifdef CONFIG_IDE
77         xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10);
78         /* init xilinx control registers - enable ide mux, clear reset bit */
79         if (!xilinx) {
80                 printk(KERN_CRIT
81                        "redwood6_setup_arch() xilinxi ioremap failed\n");
82                 return;
83         }
84         xilinx_1 = xilinx + 0xa;
85         xilinx_2 = xilinx + 0xe;
86
87         us_reg5 = readb(xilinx_1);
88         writeb(0x01d1, xilinx_1);
89         writeb(0x0008, xilinx_2);
90
91         udelay(10 * 1000);
92
93         writeb(0x01d1, xilinx_1);
94         writeb(0x0008, xilinx_2);
95 #endif
96
97 #ifdef DEBUG_BRINGUP
98         bd_t *bip = (bd_t *) __res;
99         printk("\n");
100         printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
101         printk("\n");
102         printk("bi_s_version\t %s\n", bip->bi_s_version);
103         printk("bi_r_version\t %s\n", bip->bi_r_version);
104         printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
105                bip->bi_memsize / (1024 * 1000));
106         printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
107                bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2],
108                bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]);
109
110         printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
111                bip->bi_intfreq, bip->bi_intfreq / 1000000);
112
113         printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
114                bip->bi_busfreq, bip->bi_busfreq / 1000000);
115         printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n",
116                bip->bi_tbfreq, bip->bi_tbfreq / 1000000);
117
118         printk("\n");
119 #endif
120
121         /* Identify the system */
122         printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n");
123         printk(KERN_INFO
124                "Port by MontaVista Software, Inc. (source@mvista.com)\n");
125
126         device_initcall(redwood6_platform_add_devices);
127 }
128
129 void __init
130 redwood6_map_io(void)
131 {
132         int i;
133
134         ppc4xx_map_io();
135         for (i = 0; i < 16; i++) {
136                 unsigned long v, p;
137
138                 /* 0x400x0000 -> 0xe00x0000 */
139                 p = 0x40000000 | (i << 16);
140                 v = STBx25xx_IO_BASE | (i << 16);
141
142                 io_block_mapping(v, p, PAGE_SIZE,
143                                  _PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) |
144                                  _PAGE_GUARDED);
145         }
146 }
147
148 void __init
149 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
150               unsigned long r6, unsigned long r7)
151 {
152         ppc4xx_init(r3, r4, r5, r6, r7);
153
154         ppc_md.setup_arch = redwood6_setup_arch;
155         ppc_md.setup_io_mappings = redwood6_map_io;
156 }