1 /*
2 * arch/arm/mach-iop33x/iq80331.c
3 *
4 * Board support code for the Intel IQ80331 platform.
5 *
6 * Author: Dave Jiang <dave.jiang@intel.com>
7 * Copyright (C) 2003 Intel Corp.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 */
14
15 #include <linux/mm.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/pci.h>
19 #include <linux/string.h>
20 #include <linux/serial_core.h>
21 #include <linux/serial_8250.h>
22 #include <linux/mtd/physmap.h>
23 #include <linux/platform_device.h>
24 #include <linux/io.h>
25 #include <mach/hardware.h>
26 #include <asm/irq.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29 #include <asm/mach/pci.h>
30 #include <asm/mach/time.h>
31 #include <asm/mach-types.h>
32 #include <asm/page.h>
33 #include <asm/pgtable.h>
34 #include <mach/time.h>
35
36 /*
37 * IQ80331 timer tick configuration.
38 */
iq80331_timer_init(void)39 static void __init iq80331_timer_init(void)
40 {
41 /* D-Step parts run at a higher internal bus frequency */
42 if (*IOP3XX_ATURID >= 0xa)
43 iop_init_time(333000000);
44 else
45 iop_init_time(266000000);
46 }
47
48
49 /*
50 * IQ80331 PCI.
51 */
52 static int __init
iq80331_pci_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)53 iq80331_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
54 {
55 int irq;
56
57 if (slot == 1 && pin == 1) {
58 /* PCI-X Slot INTA */
59 irq = IRQ_IOP33X_XINT1;
60 } else if (slot == 1 && pin == 2) {
61 /* PCI-X Slot INTB */
62 irq = IRQ_IOP33X_XINT2;
63 } else if (slot == 1 && pin == 3) {
64 /* PCI-X Slot INTC */
65 irq = IRQ_IOP33X_XINT3;
66 } else if (slot == 1 && pin == 4) {
67 /* PCI-X Slot INTD */
68 irq = IRQ_IOP33X_XINT0;
69 } else if (slot == 2) {
70 /* GigE */
71 irq = IRQ_IOP33X_XINT2;
72 } else {
73 printk(KERN_ERR "iq80331_pci_map_irq() called for unknown "
74 "device PCI:%d:%d:%d\n", dev->bus->number,
75 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
76 irq = -1;
77 }
78
79 return irq;
80 }
81
82 static struct hw_pci iq80331_pci __initdata = {
83 .nr_controllers = 1,
84 .ops = &iop3xx_ops,
85 .setup = iop3xx_pci_setup,
86 .preinit = iop3xx_pci_preinit_cond,
87 .map_irq = iq80331_pci_map_irq,
88 };
89
iq80331_pci_init(void)90 static int __init iq80331_pci_init(void)
91 {
92 if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
93 machine_is_iq80331())
94 pci_common_init(&iq80331_pci);
95
96 return 0;
97 }
98
99 subsys_initcall(iq80331_pci_init);
100
101
102 /*
103 * IQ80331 machine initialisation.
104 */
105 static struct physmap_flash_data iq80331_flash_data = {
106 .width = 1,
107 };
108
109 static struct resource iq80331_flash_resource = {
110 .start = 0xc0000000,
111 .end = 0xc07fffff,
112 .flags = IORESOURCE_MEM,
113 };
114
115 static struct platform_device iq80331_flash_device = {
116 .name = "physmap-flash",
117 .id = 0,
118 .dev = {
119 .platform_data = &iq80331_flash_data,
120 },
121 .num_resources = 1,
122 .resource = &iq80331_flash_resource,
123 };
124
125 static struct resource iq80331_gpio_res[] = {
126 DEFINE_RES_MEM((IOP3XX_PERIPHERAL_PHYS_BASE + 0x1780), 0x10),
127 };
128
iq80331_init_machine(void)129 static void __init iq80331_init_machine(void)
130 {
131 platform_device_register_simple("gpio-iop", 0,
132 iq80331_gpio_res,
133 ARRAY_SIZE(iq80331_gpio_res));
134 platform_device_register(&iop3xx_i2c0_device);
135 platform_device_register(&iop3xx_i2c1_device);
136 platform_device_register(&iop33x_uart0_device);
137 platform_device_register(&iop33x_uart1_device);
138 platform_device_register(&iq80331_flash_device);
139 platform_device_register(&iop3xx_dma_0_channel);
140 platform_device_register(&iop3xx_dma_1_channel);
141 platform_device_register(&iop3xx_aau_channel);
142 }
143
144 MACHINE_START(IQ80331, "Intel IQ80331")
145 /* Maintainer: Intel Corp. */
146 .atag_offset = 0x100,
147 .map_io = iop3xx_map_io,
148 .init_irq = iop33x_init_irq,
149 .init_time = iq80331_timer_init,
150 .init_machine = iq80331_init_machine,
151 .restart = iop3xx_restart,
152 MACHINE_END
153
