1 files changed, 200 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/s3c2410.c b/arch/arm/mach-s3c2410/s3c2410.c
new file mode 100644
index 000000000000..ff2f25409e44
--- /dev/null
+++ b/arch/arm/mach-s3c2410/s3c2410.c
@@ -0,0 +1,200 @@
+/* linux/arch/arm/mach-s3c2410/s3c2410.c
+ *
+ * Copyright (c) 2003-2005 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *
+ * http://www.simtec.co.uk/products/EB2410ITX/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Modifications:
+ *     16-May-2003 BJD  Created initial version
+ *     16-Aug-2003 BJD  Fixed header files and copyright, added URL
+ *     05-Sep-2003 BJD  Moved to kernel v2.6
+ *     18-Jan-2004 BJD  Added serial port configuration
+ *     21-Aug-2004 BJD  Added new struct s3c2410_board handler
+ *     28-Sep-2004 BJD  Updates for new serial port bits
+ *     04-Nov-2004 BJD  Updated UART configuration process
+ *     10-Jan-2005 BJD  Removed s3c2410_clock_tick_rate
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/device.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <asm/arch/regs-clock.h>
+#include <asm/arch/regs-serial.h>
+
+#include "s3c2410.h"
+#include "cpu.h"
+#include "clock.h"
+
+/* Initial IO mappings */
+
+static struct map_desc s3c2410_iodesc[] __initdata = {
+        IODESC_ENT(USBHOST),
+        IODESC_ENT(CLKPWR),
+        IODESC_ENT(LCD),
+        IODESC_ENT(UART),
+        IODESC_ENT(TIMER),
+        IODESC_ENT(ADC),
+        IODESC_ENT(WATCHDOG)
+};
+
+static struct resource s3c_uart0_resource[] = {
+        [0] = {
+                .start = S3C2410_PA_UART0,
+                .end   = S3C2410_PA_UART0 + 0x3fff,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start = IRQ_S3CUART_RX0,
+                .end   = IRQ_S3CUART_ERR0,
+                .flags = IORESOURCE_IRQ,
+        }
+
+};
+
+static struct resource s3c_uart1_resource[] = {
+        [0] = {
+                .start = S3C2410_PA_UART1,
+                .end   = S3C2410_PA_UART1 + 0x3fff,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start = IRQ_S3CUART_RX1,
+                .end   = IRQ_S3CUART_ERR1,
+                .flags = IORESOURCE_IRQ,
+        }
+};
+
+static struct resource s3c_uart2_resource[] = {
+        [0] = {
+                .start = S3C2410_PA_UART2,
+                .end   = S3C2410_PA_UART2 + 0x3fff,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start = IRQ_S3CUART_RX2,
+                .end   = IRQ_S3CUART_ERR2,
+                .flags = IORESOURCE_IRQ,
+        }
+};
+
+/* our uart devices */
+
+static struct platform_device s3c_uart0 = {
+        .name             = "s3c2410-uart",
+        .id               = 0,
+        .num_resources    = ARRAY_SIZE(s3c_uart0_resource),
+        .resource         = s3c_uart0_resource,
+};
+
+
+static struct platform_device s3c_uart1 = {
+        .name             = "s3c2410-uart",
+        .id               = 1,
+        .num_resources    = ARRAY_SIZE(s3c_uart1_resource),
+        .resource         = s3c_uart1_resource,
+};
+
+static struct platform_device s3c_uart2 = {
+        .name             = "s3c2410-uart",
+        .id               = 2,
+        .num_resources    = ARRAY_SIZE(s3c_uart2_resource),
+        .resource         = s3c_uart2_resource,
+};
+
+static struct platform_device *uart_devices[] __initdata = {
+        &s3c_uart0,
+        &s3c_uart1,
+        &s3c_uart2
+};
+
+/* store our uart devices for the serial driver console */
+struct platform_device *s3c2410_uart_devices[3];
+
+static int s3c2410_uart_count = 0;
+
+/* uart registration process */
+
+void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+{
+        struct platform_device *platdev;
+        int uart;
+
+        for (uart = 0; uart < no; uart++, cfg++) {
+                platdev = uart_devices[cfg->hwport];
+
+                s3c24xx_uart_devs[uart] = platdev;
+                platdev->dev.platform_data = cfg;
+        }
+
+        s3c2410_uart_count = uart;
+}
+
+/* s3c2410_map_io
+ *
+ * register the standard cpu IO areas, and any passed in from the
+ * machine specific initialisation.
+*/
+
+void __init s3c2410_map_io(struct map_desc *mach_desc, int mach_size)
+{
+        /* register our io-tables */
+
+        iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
+        iotable_init(mach_desc, mach_size);
+}
+
+void __init s3c2410_init_clocks(int xtal)
+{
+        unsigned long tmp;
+        unsigned long fclk;
+        unsigned long hclk;
+        unsigned long pclk;
+
+        /* now we've got our machine bits initialised, work out what
+         * clocks we've got */
+
+        fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), xtal);
+
+        tmp = __raw_readl(S3C2410_CLKDIVN);
+
+        /* work out clock scalings */
+
+        hclk = fclk / ((tmp & S3C2410_CLKDIVN_HDIVN) ? 2 : 1);
+        pclk = hclk / ((tmp & S3C2410_CLKDIVN_PDIVN) ? 2 : 1);
+
+        /* print brieft summary of clocks, etc */
+
+        printk("S3C2410: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
+               print_mhz(fclk), print_mhz(hclk), print_mhz(pclk));
+
+        /* initialise the clocks here, to allow other things like the
+         * console to use them
+         */
+
+        s3c24xx_setup_clocks(xtal, fclk, hclk, pclk);
+}
+
+int __init s3c2410_init(void)
+{
+        printk("S3C2410: Initialising architecture\n");
+
+        return platform_add_devices(s3c24xx_uart_devs, s3c2410_uart_count);
+}