2 * linux/arch/arm/mach-shark/arch.c
4 * Architecture specific stuff.
6 #include <linux/kernel.h>
7 #include <linux/init.h>
8 #include <linux/interrupt.h>
10 #include <linux/sched.h>
11 #include <linux/serial_8250.h>
14 #include <asm/setup.h>
15 #include <asm/mach-types.h>
17 #include <asm/param.h>
19 #include <asm/mach/map.h>
20 #include <asm/mach/arch.h>
21 #include <asm/mach/time.h>
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
29 void arch_reset(char mode
, const char *cmd
)
33 /* Reset the Machine via pc[3] of the sequoia chipset */
36 temp
= temp
| (1<<3) | (1<<10);
41 static struct plat_serial8250_port serial_platform_data
[] = {
48 .flags
= UPF_BOOT_AUTOCONF
| UPF_SKIP_TEST
,
56 .flags
= UPF_BOOT_AUTOCONF
| UPF_SKIP_TEST
,
61 static struct platform_device serial_device
= {
63 .id
= PLAT8250_DEV_PLATFORM
,
65 .platform_data
= serial_platform_data
,
69 static struct resource rtc_resources
[] = {
73 .flags
= IORESOURCE_IO
,
76 .start
= IRQ_ISA_RTC_ALARM
,
77 .end
= IRQ_ISA_RTC_ALARM
,
78 .flags
= IORESOURCE_IRQ
,
82 static struct platform_device rtc_device
= {
85 .resource
= rtc_resources
,
86 .num_resources
= ARRAY_SIZE(rtc_resources
),
89 static int __init
shark_init(void)
93 if (machine_is_shark())
95 ret
= platform_device_register(&rtc_device
);
96 if (ret
) printk(KERN_ERR
"Unable to register RTC device: %d\n", ret
);
97 ret
= platform_device_register(&serial_device
);
98 if (ret
) printk(KERN_ERR
"Unable to register Serial device: %d\n", ret
);
103 arch_initcall(shark_init
);
105 extern void shark_init_irq(void);
107 static struct map_desc shark_io_desc
[] __initdata
= {
110 .pfn
= __phys_to_pfn(IO_START
),
116 static void __init
shark_map_io(void)
118 iotable_init(shark_io_desc
, ARRAY_SIZE(shark_io_desc
));
122 #define HZ_TIME ((1193180 + HZ/2) / HZ)
125 shark_timer_interrupt(int irq
, void *dev_id
)
131 static struct irqaction shark_timer_irq
= {
132 .name
= "Shark Timer Tick",
133 .flags
= IRQF_DISABLED
| IRQF_TIMER
| IRQF_IRQPOLL
,
134 .handler
= shark_timer_interrupt
,
138 * Set up timer interrupt, and return the current time in seconds.
140 static void __init
shark_timer_init(void)
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);
146 setup_irq(IRQ_TIMER
, &shark_timer_irq
);
149 static struct sys_timer shark_timer
= {
150 .init
= shark_timer_init
,
153 MACHINE_START(SHARK
, "Shark")
154 /* Maintainer: Alexander Schulz */
155 .boot_params
= 0x08003000,
156 .map_io
= shark_map_io
,
157 .init_irq
= shark_init_irq
,
158 .timer
= &shark_timer
,