1 /*
2 *
3 * Module name: redwood6.c
4 *
5 * Description:
6 * IBM redwood6 eval board file
7 *
8 * Author: Armin Kuster
9 * Copyright 2002 MontaVista Software Inc.
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 *
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
19 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
22 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
23 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * You should have received a copy of the GNU General Public License along
28 * with this program; if not, write to the Free Software Foundation, Inc.,
29 * 675 Mass Ave, Cambridge, MA 02139, USA.
30 *
31 * History: July 10, 2002 - Armin
32 * initial release
33 *
34 * : July 16, 2002 - Armin
35 * added xilinx init code for ide interface
36 * added IRQ table
37 *
38 */
39
40 #include <linux/config.h>
41 #include <linux/init.h>
42 #include <linux/pagemap.h>
43 #include <asm/io.h>
44 #include <asm/ppc4xx_pic.h>
45 #include <linux/delay.h>
46 #include <asm/machdep.h>
47
48
49 /*
50 * Define all of the IRQ senses and polarities.
51 */
52
53 static u_char redwood6_IRQ_initsenses[] __initdata = {
54 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 0: RTC/FPC */
55 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 1: Transport */
56 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 2: Audio Dec */
57 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 3: Video Dec */
58 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 4: DMA Chan 0 */
59 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 5: DMA Chan 1 */
60 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 6: DMA Chan 2 */
61 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 7: DMA Chan 3 */
62 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 8: SmartCard 0 */
63 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 9: IIC0 */
64 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 10: IRR */
65 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 11: Cap Timers */
66 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 12: Cmp Timers */
67 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 13: Serial Port */
68 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 14: Soft Modem */
69 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 15: Down Ctrs */
70 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 16: SmartCard 1 */
71 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 17: Ext Int 7 */
72 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 18: Ext Int 8 */
73 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 19: Ext Int 9 */
74 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 20: Serial 0 */
75 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 21: Serial 1 */
76 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 22: Serial 2 */
77 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 23: XPT_DMA */
78 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 24: DCR timeout */
79 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 25: Ext Int 0 */
80 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 26: Ext Int 1 */
81 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 27: Ext Int 2 */
82 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 28: Ext Int 3 */
83 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 29: Ext Int 4 */
84 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 30: Ext Int 5 */
85 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 31: Ext Int 6 */
86 };
87
88
89 void __init
board_setup_arch(void)90 board_setup_arch(void)
91 {
92 #ifdef CONFIG_IDE
93 void *xilinx, *xilinx_1, *xilinx_2;
94 unsigned short us_reg5;
95
96 xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10);
97 /* init xilinx control registers - enable ide mux, clear reset bit */
98 if (!xilinx) {
99 printk(KERN_CRIT
100 "redwood6_setup_arch() xilinxi ioremap failed\n");
101 return;
102 }
103 xilinx_1 = xilinx + 0xa;
104 xilinx_2 = xilinx + 0xe;
105
106 us_reg5 = readb(xilinx_1);
107 writeb(0x01d1, xilinx_1);
108 writeb(0x0008, xilinx_2);
109
110 udelay(10 * 1000);
111
112 writeb(0x01d1, xilinx_1);
113 writeb(0x0008, xilinx_2);
114 #endif
115
116 #ifdef DEBUG_BRINGUP
117 bd_t *bip = (bd_t *) __res;
118 printk("\n");
119 printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
120 printk("\n");
121 printk("bi_s_version\t %s\n", bip->bi_s_version);
122 printk("bi_r_version\t %s\n", bip->bi_r_version);
123 printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
124 bip->bi_memsize / (1024 * 1000));
125 printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
126 bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2],
127 bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]);
128
129 printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
130 bip->bi_intfreq, bip->bi_intfreq / 1000000);
131
132 printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
133 bip->bi_busfreq, bip->bi_busfreq / 1000000);
134 printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n",
135 bip->bi_tbfreq, bip->bi_tbfreq / 1000000);
136
137 printk("\n");
138 #endif
139 ibm4xxPIC_InitSenses = redwood6_IRQ_initsenses;
140 ibm4xxPIC_NumInitSenses = sizeof(redwood6_IRQ_initsenses);
141
142 /* Identify the system */
143 printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n");
144 printk(KERN_INFO
145 "Port by MontaVista Software, Inc. (source@mvista.com)\n");
146 }
147
148 void __init
board_io_mapping(void)149 board_io_mapping(void)
150 {
151 int i;
152
153 for (i = 0; i < 16; i++) {
154 unsigned long v, p;
155
156 /* 0x400x0000 -> 0xe00x0000 */
157 p = 0x40000000 | (i << 16);
158 v = STBx25xx_IO_BASE | (i << 16);
159
160 io_block_mapping(v, p, PAGE_SIZE,
161 _PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) |
162 _PAGE_GUARDED);
163 }
164 }
165
166 void __init
board_setup_irq(void)167 board_setup_irq(void)
168 {
169 }
170
171 void __init
board_init(void)172 board_init(void)
173 {
174 }
175