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>
13 #include <linux/cpu.h>
15 #include <asm/setup.h>
16 #include <asm/mach-types.h>
17 #include <asm/param.h>
18 #include <asm/system_misc.h>
20 #include <asm/mach/map.h>
21 #include <asm/mach/arch.h>
22 #include <asm/mach/time.h>
24 #define ROMCARD_SIZE 0x08000000
25 #define ROMCARD_START 0x10000000
27 static void shark_restart(char mode, const char *cmd)
30 /* Reset the Machine via pc[3] of the sequoia chipset */
33 temp = temp | (1<<3) | (1<<10);
38 static struct plat_serial8250_port serial_platform_data[] = {
45 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
53 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
58 static struct platform_device serial_device = {
60 .id = PLAT8250_DEV_PLATFORM,
62 .platform_data = serial_platform_data,
66 static struct resource rtc_resources[] = {
70 .flags = IORESOURCE_IO,
73 .start = IRQ_ISA_RTC_ALARM,
74 .end = IRQ_ISA_RTC_ALARM,
75 .flags = IORESOURCE_IRQ,
79 static struct platform_device rtc_device = {
82 .resource = rtc_resources,
83 .num_resources = ARRAY_SIZE(rtc_resources),
86 static int __init shark_init(void)
90 if (machine_is_shark())
92 ret = platform_device_register(&rtc_device);
93 if (ret) printk(KERN_ERR "Unable to register RTC device: %d\n", ret);
94 ret = platform_device_register(&serial_device);
95 if (ret) printk(KERN_ERR "Unable to register Serial device: %d\n", ret);
100 arch_initcall(shark_init);
102 extern void shark_init_irq(void);
105 #define HZ_TIME ((1193180 + HZ/2) / HZ)
108 shark_timer_interrupt(int irq, void *dev_id)
114 static struct irqaction shark_timer_irq = {
115 .name = "Shark Timer Tick",
116 .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
117 .handler = shark_timer_interrupt,
121 * Set up timer interrupt, and return the current time in seconds.
123 static void __init shark_timer_init(void)
125 outb(0x34, 0x43); /* binary, mode 0, LSB/MSB, Ch 0 */
126 outb(HZ_TIME & 0xff, 0x40); /* LSB of count */
127 outb(HZ_TIME >> 8, 0x40);
129 setup_irq(IRQ_TIMER, &shark_timer_irq);
132 static void shark_init_early(void)
134 cpu_idle_poll_ctrl(true);
137 MACHINE_START(SHARK, "Shark")
138 /* Maintainer: Alexander Schulz */
139 .atag_offset = 0x3000,
140 .init_early = shark_init_early,
141 .init_irq = shark_init_irq,
142 .init_time = shark_timer_init,
143 .dma_zone_size = SZ_4M,
144 .restart = shark_restart,