Commit | Line | Data |
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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 | ||
23 | static struct plat_serial8250_port serial_platform_data[] = { | |
24 | { | |
25 | .iobase = 0x3f8, | |
26 | .irq = 4, | |
27 | .uartclk = 1843200, | |
b7523418 | 28 | .regshift = 0, |
1da177e4 LT |
29 | .iotype = UPIO_PORT, |
30 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
31 | }, | |
32 | { | |
33 | .iobase = 0x2f8, | |
34 | .irq = 3, | |
35 | .uartclk = 1843200, | |
b7523418 | 36 | .regshift = 0, |
1da177e4 LT |
37 | .iotype = UPIO_PORT, |
38 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
39 | }, | |
40 | { }, | |
41 | }; | |
42 | ||
43 | static struct platform_device serial_device = { | |
44 | .name = "serial8250", | |
6df29deb | 45 | .id = PLAT8250_DEV_PLATFORM, |
1da177e4 LT |
46 | .dev = { |
47 | .platform_data = serial_platform_data, | |
48 | }, | |
49 | }; | |
50 | ||
51 | static int __init shark_init(void) | |
52 | { | |
53 | int ret; | |
54 | ||
55 | if (machine_is_shark()) | |
56 | ret = platform_device_register(&serial_device); | |
57 | ||
58 | return ret; | |
59 | } | |
60 | ||
61 | arch_initcall(shark_init); | |
62 | ||
63 | extern void shark_init_irq(void); | |
64 | ||
65 | static struct map_desc shark_io_desc[] __initdata = { | |
cd5fc8bf DS |
66 | { |
67 | .virtual = IO_BASE, | |
68 | .pfn = __phys_to_pfn(IO_START), | |
69 | .length = IO_SIZE, | |
70 | .type = MT_DEVICE | |
71 | } | |
1da177e4 LT |
72 | }; |
73 | ||
74 | static void __init shark_map_io(void) | |
75 | { | |
76 | iotable_init(shark_io_desc, ARRAY_SIZE(shark_io_desc)); | |
77 | } | |
78 | ||
79 | #define IRQ_TIMER 0 | |
80 | #define HZ_TIME ((1193180 + HZ/2) / HZ) | |
81 | ||
82 | static irqreturn_t | |
0cd61b68 | 83 | shark_timer_interrupt(int irq, void *dev_id) |
1da177e4 | 84 | { |
0cd61b68 | 85 | timer_tick(); |
1da177e4 LT |
86 | return IRQ_HANDLED; |
87 | } | |
88 | ||
89 | static struct irqaction shark_timer_irq = { | |
90 | .name = "Shark Timer Tick", | |
b30fabad | 91 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, |
09b8b5f8 | 92 | .handler = shark_timer_interrupt, |
1da177e4 LT |
93 | }; |
94 | ||
95 | /* | |
96 | * Set up timer interrupt, and return the current time in seconds. | |
97 | */ | |
98 | static void __init shark_timer_init(void) | |
99 | { | |
100 | outb(0x34, 0x43); /* binary, mode 0, LSB/MSB, Ch 0 */ | |
101 | outb(HZ_TIME & 0xff, 0x40); /* LSB of count */ | |
102 | outb(HZ_TIME >> 8, 0x40); | |
103 | ||
104 | setup_irq(IRQ_TIMER, &shark_timer_irq); | |
105 | } | |
106 | ||
107 | static struct sys_timer shark_timer = { | |
108 | .init = shark_timer_init, | |
109 | }; | |
110 | ||
111 | MACHINE_START(SHARK, "Shark") | |
e9dea0c6 | 112 | /* Maintainer: Alexander Schulz */ |
e9dea0c6 RK |
113 | .phys_io = 0x40000000, |
114 | .io_pg_offst = ((0xe0000000) >> 18) & 0xfffc, | |
115 | .boot_params = 0x08003000, | |
116 | .map_io = shark_map_io, | |
117 | .init_irq = shark_init_irq, | |
1da177e4 LT |
118 | .timer = &shark_timer, |
119 | MACHINE_END |