Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-shark/arch.c | |
3 | * | |
4 | * Architecture specific stuff. | |
5 | */ | |
6 | #include <linux/kernel.h> | |
7 | #include <linux/init.h> | |
8 | #include <linux/interrupt.h> | |
5a67b777 | 9 | #include <linux/irq.h> |
1da177e4 LT |
10 | #include <linux/sched.h> |
11 | #include <linux/serial_8250.h> | |
fced80c7 | 12 | #include <linux/io.h> |
1da177e4 LT |
13 | |
14 | #include <asm/setup.h> | |
15 | #include <asm/mach-types.h> | |
1da177e4 LT |
16 | #include <asm/leds.h> |
17 | #include <asm/param.h> | |
18 | ||
19 | #include <asm/mach/map.h> | |
20 | #include <asm/mach/arch.h> | |
21 | #include <asm/mach/time.h> | |
22 | ||
eab184c2 AS |
23 | #define IO_BASE 0xe0000000 |
24 | #define IO_SIZE 0x08000000 | |
25 | #define IO_START 0x40000000 | |
26 | #define ROMCARD_SIZE 0x08000000 | |
27 | #define ROMCARD_START 0x10000000 | |
28 | ||
be093beb | 29 | void arch_reset(char mode, const char *cmd) |
eab184c2 AS |
30 | { |
31 | short temp; | |
32 | local_irq_disable(); | |
33 | /* Reset the Machine via pc[3] of the sequoia chipset */ | |
34 | outw(0x09,0x24); | |
35 | temp=inw(0x26); | |
36 | temp = temp | (1<<3) | (1<<10); | |
37 | outw(0x09,0x24); | |
38 | outw(temp,0x26); | |
39 | } | |
40 | ||
1da177e4 LT |
41 | static struct plat_serial8250_port serial_platform_data[] = { |
42 | { | |
43 | .iobase = 0x3f8, | |
44 | .irq = 4, | |
45 | .uartclk = 1843200, | |
b7523418 | 46 | .regshift = 0, |
1da177e4 LT |
47 | .iotype = UPIO_PORT, |
48 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
49 | }, | |
50 | { | |
51 | .iobase = 0x2f8, | |
52 | .irq = 3, | |
53 | .uartclk = 1843200, | |
b7523418 | 54 | .regshift = 0, |
1da177e4 LT |
55 | .iotype = UPIO_PORT, |
56 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
57 | }, | |
58 | { }, | |
59 | }; | |
60 | ||
61 | static struct platform_device serial_device = { | |
62 | .name = "serial8250", | |
6df29deb | 63 | .id = PLAT8250_DEV_PLATFORM, |
1da177e4 LT |
64 | .dev = { |
65 | .platform_data = serial_platform_data, | |
66 | }, | |
67 | }; | |
68 | ||
eab184c2 AS |
69 | static struct resource rtc_resources[] = { |
70 | [0] = { | |
71 | .start = 0x70, | |
72 | .end = 0x73, | |
73 | .flags = IORESOURCE_IO, | |
74 | }, | |
75 | [1] = { | |
76 | .start = IRQ_ISA_RTC_ALARM, | |
77 | .end = IRQ_ISA_RTC_ALARM, | |
78 | .flags = IORESOURCE_IRQ, | |
79 | } | |
80 | }; | |
81 | ||
82 | static struct platform_device rtc_device = { | |
83 | .name = "rtc_cmos", | |
84 | .id = -1, | |
85 | .resource = rtc_resources, | |
86 | .num_resources = ARRAY_SIZE(rtc_resources), | |
87 | }; | |
88 | ||
1da177e4 LT |
89 | static int __init shark_init(void) |
90 | { | |
91 | int ret; | |
92 | ||
93 | if (machine_is_shark()) | |
eab184c2 AS |
94 | { |
95 | ret = platform_device_register(&rtc_device); | |
96 | if (ret) printk(KERN_ERR "Unable to register RTC device: %d\n", ret); | |
1da177e4 | 97 | ret = platform_device_register(&serial_device); |
eab184c2 AS |
98 | if (ret) printk(KERN_ERR "Unable to register Serial device: %d\n", ret); |
99 | } | |
100 | return 0; | |
1da177e4 LT |
101 | } |
102 | ||
103 | arch_initcall(shark_init); | |
104 | ||
105 | extern void shark_init_irq(void); | |
106 | ||
107 | static struct map_desc shark_io_desc[] __initdata = { | |
cd5fc8bf DS |
108 | { |
109 | .virtual = IO_BASE, | |
110 | .pfn = __phys_to_pfn(IO_START), | |
111 | .length = IO_SIZE, | |
112 | .type = MT_DEVICE | |
113 | } | |
1da177e4 LT |
114 | }; |
115 | ||
116 | static void __init shark_map_io(void) | |
117 | { | |
118 | iotable_init(shark_io_desc, ARRAY_SIZE(shark_io_desc)); | |
119 | } | |
120 | ||
121 | #define IRQ_TIMER 0 | |
122 | #define HZ_TIME ((1193180 + HZ/2) / HZ) | |
123 | ||
124 | static irqreturn_t | |
0cd61b68 | 125 | shark_timer_interrupt(int irq, void *dev_id) |
1da177e4 | 126 | { |
0cd61b68 | 127 | timer_tick(); |
1da177e4 LT |
128 | return IRQ_HANDLED; |
129 | } | |
130 | ||
131 | static struct irqaction shark_timer_irq = { | |
132 | .name = "Shark Timer Tick", | |
b30fabad | 133 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, |
09b8b5f8 | 134 | .handler = shark_timer_interrupt, |
1da177e4 LT |
135 | }; |
136 | ||
137 | /* | |
138 | * Set up timer interrupt, and return the current time in seconds. | |
139 | */ | |
140 | static void __init shark_timer_init(void) | |
141 | { | |
142 | outb(0x34, 0x43); /* binary, mode 0, LSB/MSB, Ch 0 */ | |
143 | outb(HZ_TIME & 0xff, 0x40); /* LSB of count */ | |
144 | outb(HZ_TIME >> 8, 0x40); | |
145 | ||
146 | setup_irq(IRQ_TIMER, &shark_timer_irq); | |
147 | } | |
148 | ||
149 | static struct sys_timer shark_timer = { | |
150 | .init = shark_timer_init, | |
151 | }; | |
152 | ||
153 | MACHINE_START(SHARK, "Shark") | |
e9dea0c6 | 154 | /* Maintainer: Alexander Schulz */ |
e9dea0c6 RK |
155 | .boot_params = 0x08003000, |
156 | .map_io = shark_map_io, | |
157 | .init_irq = shark_init_irq, | |
1da177e4 LT |
158 | .timer = &shark_timer, |
159 | MACHINE_END |