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 | ||
47190a33 RK |
19 | #include <mach/hardware.h> |
20 | ||
1da177e4 LT |
21 | #include <asm/mach/map.h> |
22 | #include <asm/mach/arch.h> | |
23 | #include <asm/mach/time.h> | |
24 | ||
25 | static struct plat_serial8250_port serial_platform_data[] = { | |
26 | { | |
27 | .iobase = 0x3f8, | |
28 | .irq = 4, | |
29 | .uartclk = 1843200, | |
b7523418 | 30 | .regshift = 0, |
1da177e4 LT |
31 | .iotype = UPIO_PORT, |
32 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
33 | }, | |
34 | { | |
35 | .iobase = 0x2f8, | |
36 | .irq = 3, | |
37 | .uartclk = 1843200, | |
b7523418 | 38 | .regshift = 0, |
1da177e4 LT |
39 | .iotype = UPIO_PORT, |
40 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
41 | }, | |
42 | { }, | |
43 | }; | |
44 | ||
45 | static struct platform_device serial_device = { | |
46 | .name = "serial8250", | |
6df29deb | 47 | .id = PLAT8250_DEV_PLATFORM, |
1da177e4 LT |
48 | .dev = { |
49 | .platform_data = serial_platform_data, | |
50 | }, | |
51 | }; | |
52 | ||
53 | static int __init shark_init(void) | |
54 | { | |
55 | int ret; | |
56 | ||
57 | if (machine_is_shark()) | |
58 | ret = platform_device_register(&serial_device); | |
59 | ||
60 | return ret; | |
61 | } | |
62 | ||
63 | arch_initcall(shark_init); | |
64 | ||
65 | extern void shark_init_irq(void); | |
66 | ||
67 | static struct map_desc shark_io_desc[] __initdata = { | |
cd5fc8bf DS |
68 | { |
69 | .virtual = IO_BASE, | |
70 | .pfn = __phys_to_pfn(IO_START), | |
71 | .length = IO_SIZE, | |
72 | .type = MT_DEVICE | |
73 | } | |
1da177e4 LT |
74 | }; |
75 | ||
76 | static void __init shark_map_io(void) | |
77 | { | |
78 | iotable_init(shark_io_desc, ARRAY_SIZE(shark_io_desc)); | |
79 | } | |
80 | ||
81 | #define IRQ_TIMER 0 | |
82 | #define HZ_TIME ((1193180 + HZ/2) / HZ) | |
83 | ||
84 | static irqreturn_t | |
0cd61b68 | 85 | shark_timer_interrupt(int irq, void *dev_id) |
1da177e4 | 86 | { |
0cd61b68 | 87 | timer_tick(); |
1da177e4 LT |
88 | return IRQ_HANDLED; |
89 | } | |
90 | ||
91 | static struct irqaction shark_timer_irq = { | |
92 | .name = "Shark Timer Tick", | |
b30fabad | 93 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, |
09b8b5f8 | 94 | .handler = shark_timer_interrupt, |
1da177e4 LT |
95 | }; |
96 | ||
97 | /* | |
98 | * Set up timer interrupt, and return the current time in seconds. | |
99 | */ | |
100 | static void __init shark_timer_init(void) | |
101 | { | |
102 | outb(0x34, 0x43); /* binary, mode 0, LSB/MSB, Ch 0 */ | |
103 | outb(HZ_TIME & 0xff, 0x40); /* LSB of count */ | |
104 | outb(HZ_TIME >> 8, 0x40); | |
105 | ||
106 | setup_irq(IRQ_TIMER, &shark_timer_irq); | |
107 | } | |
108 | ||
109 | static struct sys_timer shark_timer = { | |
110 | .init = shark_timer_init, | |
111 | }; | |
112 | ||
113 | MACHINE_START(SHARK, "Shark") | |
e9dea0c6 | 114 | /* Maintainer: Alexander Schulz */ |
e9dea0c6 RK |
115 | .phys_io = 0x40000000, |
116 | .io_pg_offst = ((0xe0000000) >> 18) & 0xfffc, | |
117 | .boot_params = 0x08003000, | |
118 | .map_io = shark_map_io, | |
119 | .init_irq = shark_init_irq, | |
1da177e4 LT |
120 | .timer = &shark_timer, |
121 | MACHINE_END |