From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001
From: root <root@artemis.panaceas.org>
Date: Fri, 25 Dec 2015 04:40:36 +0000
Subject: initial_commit

---
 arch/arm/mach-shark/core.c | 159 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 arch/arm/mach-shark/core.c

(limited to 'arch/arm/mach-shark/core.c')

diff --git a/arch/arm/mach-shark/core.c b/arch/arm/mach-shark/core.c
new file mode 100644
index 00000000..5cf7f94c
--- /dev/null
+++ b/arch/arm/mach-shark/core.c
@@ -0,0 +1,159 @@
+/*
+ *  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/mach/map.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+
+#define IO_BASE                 0xe0000000
+#define IO_SIZE                 0x08000000
+#define IO_START                0x40000000
+#define ROMCARD_SIZE            0x08000000
+#define ROMCARD_START           0x10000000
+
+void arch_reset(char mode, const char *cmd)
+{
+        short temp;
+        local_irq_disable();
+        /* 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);
+
+static struct map_desc shark_io_desc[] __initdata = {
+	{
+		.virtual	= IO_BASE,
+		.pfn		= __phys_to_pfn(IO_START),
+		.length		= IO_SIZE,
+		.type		= MT_DEVICE
+	}
+};
+
+static void __init shark_map_io(void)
+{
+	iotable_init(shark_io_desc, ARRAY_SIZE(shark_io_desc));
+}
+
+#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,
+};
+
+MACHINE_START(SHARK, "Shark")
+	/* Maintainer: Alexander Schulz */
+	.boot_params	= 0x08003000,
+	.map_io		= shark_map_io,
+	.init_irq	= shark_init_irq,
+	.timer		= &shark_timer,
+MACHINE_END
-- 
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