/* * linux/arch/arm/mach-shark/arch.c * * Architecture specific stuff. */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/sched.h> #include <linux/serial_8250.h> #include <linux/io.h> #include <asm/setup.h> #include <asm/mach-types.h> #include <asm/leds.h> #include <asm/param.h> #include <asm/system_misc.h> #include <asm/mach/map.h> #include <asm/mach/arch.h> #include <asm/mach/time.h> #define ROMCARD_SIZE 0x08000000 #define ROMCARD_START 0x10000000 static void shark_restart(char mode, const char *cmd) { short temp; /* Reset the Machine via pc[3] of the sequoia chipset */ outw(0x09,0x24); temp=inw(0x26); temp = temp | (1<<3) | (1<<10); outw(0x09,0x24); outw(temp,0x26); } static struct plat_serial8250_port serial_platform_data[] = { { .iobase = 0x3f8, .irq = 4, .uartclk = 1843200, .regshift = 0, .iotype = UPIO_PORT, .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, }, { .iobase = 0x2f8, .irq = 3, .uartclk = 1843200, .regshift = 0, .iotype = UPIO_PORT, .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, }, { }, }; static struct platform_device serial_device = { .name = "serial8250", .id = PLAT8250_DEV_PLATFORM, .dev = { .platform_data = serial_platform_data, }, }; static struct resource rtc_resources[] = { [0] = { .start = 0x70, .end = 0x73, .flags = IORESOURCE_IO, }, [1] = { .start = IRQ_ISA_RTC_ALARM, .end = IRQ_ISA_RTC_ALARM, .flags = IORESOURCE_IRQ, } }; static struct platform_device rtc_device = { .name = "rtc_cmos", .id = -1, .resource = rtc_resources, .num_resources = ARRAY_SIZE(rtc_resources), }; static int __init shark_init(void) { int ret; if (machine_is_shark()) { ret = platform_device_register(&rtc_device); if (ret) printk(KERN_ERR "Unable to register RTC device: %d\n", ret); ret = platform_device_register(&serial_device); if (ret) printk(KERN_ERR "Unable to register Serial device: %d\n", ret); } return 0; } arch_initcall(shark_init); extern void shark_init_irq(void); #define IRQ_TIMER 0 #define HZ_TIME ((1193180 + HZ/2) / HZ) static irqreturn_t shark_timer_interrupt(int irq, void *dev_id) { timer_tick(); return IRQ_HANDLED; } static struct irqaction shark_timer_irq = { .name = "Shark Timer Tick", .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, .handler = shark_timer_interrupt, }; /* * Set up timer interrupt, and return the current time in seconds. */ static void __init shark_timer_init(void) { outb(0x34, 0x43); /* binary, mode 0, LSB/MSB, Ch 0 */ outb(HZ_TIME & 0xff, 0x40); /* LSB of count */ outb(HZ_TIME >> 8, 0x40); setup_irq(IRQ_TIMER, &shark_timer_irq); } static struct sys_timer shark_timer = { .init = shark_timer_init, }; static void shark_init_early(void) { disable_hlt(); } MACHINE_START(SHARK, "Shark") /* Maintainer: Alexander Schulz */ .atag_offset = 0x3000, .init_early = shark_init_early, .init_irq = shark_init_irq, .timer = &shark_timer, .dma_zone_size = SZ_4M, .restart = shark_restart, MACHINE_END