| /* 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. |
| */ |
| |
| #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/sysdev.h> |
| #include <linux/serial_core.h> |
| #include <linux/platform_device.h> |
| |
| #include <asm/mach/arch.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/irq.h> |
| |
| #include <asm/arch/hardware.h> |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| |
| #include <asm/arch/regs-clock.h> |
| #include <asm/plat-s3c/regs-serial.h> |
| |
| #include <asm/plat-s3c24xx/s3c2410.h> |
| #include <asm/plat-s3c24xx/cpu.h> |
| #include <asm/plat-s3c24xx/devs.h> |
| #include <asm/plat-s3c24xx/clock.h> |
| |
| /* Initial IO mappings */ |
| |
| static struct map_desc s3c2410_iodesc[] __initdata = { |
| IODESC_ENT(CLKPWR), |
| IODESC_ENT(TIMER), |
| IODESC_ENT(WATCHDOG), |
| }; |
| |
| /* our uart devices */ |
| |
| /* uart registration process */ |
| |
| void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no) |
| { |
| s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no); |
| } |
| |
| /* 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); |
| s3c2410_baseclk_add(); |
| } |
| |
| struct sysdev_class s3c2410_sysclass = { |
| .name = "s3c2410-core", |
| }; |
| |
| static struct sys_device s3c2410_sysdev = { |
| .cls = &s3c2410_sysclass, |
| }; |
| |
| /* need to register class before we actually register the device, and |
| * we also need to ensure that it has been initialised before any of the |
| * drivers even try to use it (even if not on an s3c2410 based system) |
| * as a driver which may support both 2410 and 2440 may try and use it. |
| */ |
| |
| static int __init s3c2410_core_init(void) |
| { |
| return sysdev_class_register(&s3c2410_sysclass); |
| } |
| |
| core_initcall(s3c2410_core_init); |
| |
| int __init s3c2410_init(void) |
| { |
| printk("S3C2410: Initialising architecture\n"); |
| |
| return sysdev_register(&s3c2410_sysdev); |
| } |