1 /* linux/arch/arm/mach-s3c2443/s3c2443.c
2 *
3 * Copyright (c) 2007 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * Samsung S3C2443 Mobile CPU support
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/interrupt.h>
16 #include <linux/list.h>
17 #include <linux/timer.h>
18 #include <linux/init.h>
19 #include <linux/gpio.h>
20 #include <linux/platform_device.h>
21 #include <linux/serial_core.h>
22 #include <linux/device.h>
23 #include <linux/clk.h>
24 #include <linux/io.h>
25
26 #include <asm/mach/arch.h>
27 #include <asm/mach/map.h>
28 #include <asm/mach/irq.h>
29
30 #include <mach/hardware.h>
31 #include <asm/irq.h>
32
33 #include <mach/regs-s3c2443-clock.h>
34
35 #include <plat/gpio-core.h>
36 #include <plat/gpio-cfg.h>
37 #include <plat/gpio-cfg-helpers.h>
38 #include <plat/s3c2443.h>
39 #include <plat/devs.h>
40 #include <plat/cpu.h>
41 #include <plat/fb-core.h>
42 #include <plat/nand-core.h>
43 #include <plat/adc-core.h>
44
45 static struct map_desc s3c2443_iodesc[] __initdata = {
46 IODESC_ENT(WATCHDOG),
47 IODESC_ENT(CLKPWR),
48 IODESC_ENT(TIMER),
49 };
50
51 struct bus_type s3c2443_subsys = {
52 .name = "s3c2443-core",
53 .dev_name = "s3c2443-core",
54 };
55
56 static struct device s3c2443_dev = {
57 .bus = &s3c2443_subsys,
58 };
59
s3c2443_restart(char mode,const char * cmd)60 void s3c2443_restart(char mode, const char *cmd)
61 {
62 if (mode == 's')
63 soft_restart(0);
64
65 __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
66 }
67
s3c2443_init(void)68 int __init s3c2443_init(void)
69 {
70 printk("S3C2443: Initialising architecture\n");
71
72 s3c_nand_setname("s3c2412-nand");
73 s3c_fb_setname("s3c2443-fb");
74
75 s3c_adc_setname("s3c2443-adc");
76
77 /* change WDT IRQ number */
78 s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
79 s3c_device_wdt.resource[1].end = IRQ_S3C2443_WDT;
80
81 return device_register(&s3c2443_dev);
82 }
83
s3c2443_init_uarts(struct s3c2410_uartcfg * cfg,int no)84 void __init s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no)
85 {
86 s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
87 }
88
89 /* s3c2443_map_io
90 *
91 * register the standard cpu IO areas, and any passed in from the
92 * machine specific initialisation.
93 */
94
s3c2443_map_io(void)95 void __init s3c2443_map_io(void)
96 {
97 s3c24xx_gpiocfg_default.set_pull = s3c2443_gpio_setpull;
98 s3c24xx_gpiocfg_default.get_pull = s3c2443_gpio_getpull;
99
100 iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
101 }
102
103 /* need to register the subsystem before we actually register the device, and
104 * we also need to ensure that it has been initialised before any of the
105 * drivers even try to use it (even if not on an s3c2443 based system)
106 * as a driver which may support both 2443 and 2440 may try and use it.
107 */
108
s3c2443_core_init(void)109 static int __init s3c2443_core_init(void)
110 {
111 return subsys_system_register(&s3c2443_subsys, NULL);
112 }
113
114 core_initcall(s3c2443_core_init);
115