Merge tag 'xtensa-20161005' of git://github.com/jcmvbkbc/linux-xtensa
[sfrench/cifs-2.6.git] / arch / xtensa / platforms / xt2000 / setup.c
1 /*
2  * arch/xtensa/platforms/xt2000/setup.c
3  *
4  * Platform specific functions for the XT2000 board.
5  *
6  * Authors:     Chris Zankel <chris@zankel.net>
7  *              Joe Taylor <joe@tensilica.com>
8  *
9  * Copyright 2001 - 2004 Tensilica Inc.
10  *
11  * This program is free software; you can redistribute  it and/or modify it
12  * under  the terms of  the GNU General  Public License as published by the
13  * Free Software Foundation;  either version 2 of the  License, or (at your
14  * option) any later version.
15  *
16  */
17 #include <linux/stddef.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/errno.h>
21 #include <linux/reboot.h>
22 #include <linux/kdev_t.h>
23 #include <linux/types.h>
24 #include <linux/major.h>
25 #include <linux/console.h>
26 #include <linux/delay.h>
27 #include <linux/stringify.h>
28 #include <linux/platform_device.h>
29 #include <linux/serial.h>
30 #include <linux/serial_8250.h>
31
32 #include <asm/processor.h>
33 #include <asm/platform.h>
34 #include <asm/bootparam.h>
35 #include <platform/hardware.h>
36 #include <platform/serial.h>
37
38 /* Assumes s points to an 8-chr string.  No checking for NULL. */
39
40 static void led_print (int f, char *s)
41 {
42         unsigned long* led_addr = (unsigned long*) (XT2000_LED_ADDR + 0xE0) + f;
43         int i;
44         for (i = f; i < 8; i++)
45                 if ((*led_addr++ = *s++) == 0)
46                     break;
47 }
48
49 void platform_halt(void)
50 {
51         led_print (0, "  HALT  ");
52         local_irq_disable();
53         while (1);
54 }
55
56 void platform_power_off(void)
57 {
58         led_print (0, "POWEROFF");
59         local_irq_disable();
60         while (1);
61 }
62
63 void platform_restart(void)
64 {
65         /* Flush and reset the mmu, simulate a processor reset, and
66          * jump to the reset vector. */
67         cpu_reset();
68         /* control never gets here */
69 }
70
71 void __init platform_setup(char** cmdline)
72 {
73         led_print (0, "LINUX   ");
74 }
75
76 /* early initialization */
77
78 void __init platform_init(bp_tag_t *first)
79 {
80 }
81
82 /* Heartbeat. Let the LED blink. */
83
84 void platform_heartbeat(void)
85 {
86         static int i=0, t = 0;
87
88         if (--t < 0)
89         {
90                 t = 59;
91                 led_print(7, i ? ".": " ");
92                 i ^= 1;
93         }
94 }
95
96 //#define RS_TABLE_SIZE 2
97
98 #define _SERIAL_PORT(_base,_irq)                                        \
99 {                                                                       \
100         .mapbase        = (_base),                                      \
101         .membase        = (void*)(_base),                               \
102         .irq            = (_irq),                                       \
103         .uartclk        = DUART16552_XTAL_FREQ,                         \
104         .iotype         = UPIO_MEM,                                     \
105         .flags          = UPF_BOOT_AUTOCONF,                            \
106         .regshift       = 2,                                            \
107 }
108
109 static struct plat_serial8250_port xt2000_serial_data[] = {
110 #if XCHAL_HAVE_BE
111         _SERIAL_PORT(DUART16552_1_ADDR + 3, DUART16552_1_INTNUM),
112         _SERIAL_PORT(DUART16552_2_ADDR + 3, DUART16552_2_INTNUM),
113 #else
114         _SERIAL_PORT(DUART16552_1_ADDR, DUART16552_1_INTNUM),
115         _SERIAL_PORT(DUART16552_2_ADDR, DUART16552_2_INTNUM),
116 #endif
117         { }
118 };
119
120 static struct platform_device xt2000_serial8250_device = {
121         .name           = "serial8250",
122         .id             = PLAT8250_DEV_PLATFORM,
123         .dev            = {
124             .platform_data = xt2000_serial_data,
125         },
126 };
127
128 static struct resource xt2000_sonic_res[] = {
129         {
130                 .start = SONIC83934_ADDR,
131                 .end   = SONIC83934_ADDR + 0xff,
132                 .flags = IORESOURCE_MEM,
133         },
134         {
135                 .start = SONIC83934_INTNUM,
136                 .end = SONIC83934_INTNUM,
137                 .flags = IORESOURCE_IRQ,
138         },
139 };
140
141 static struct platform_device xt2000_sonic_device = {
142         .name           = "xtsonic",
143         .num_resources  = ARRAY_SIZE(xt2000_sonic_res),
144         .resource               = xt2000_sonic_res,
145 };
146
147 static int __init xt2000_setup_devinit(void)
148 {
149         platform_device_register(&xt2000_serial8250_device);
150         platform_device_register(&xt2000_sonic_device);
151
152         return 0;
153 }
154
155 device_initcall(xt2000_setup_devinit);