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1 | /* | |
2 | * Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net> | |
3 | * | |
4 | * Changes for multibus/multiadapter I2C support. | |
5 | * | |
6 | * (C) Copyright 2000 | |
7 | * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it | |
8 | * | |
9 | * SPDX-License-Identifier: GPL-2.0+ | |
10 | */ | |
11 | ||
12 | #include <config.h> | |
13 | #include <common.h> | |
14 | #include <stdarg.h> | |
15 | #include <malloc.h> | |
16 | #include <stdio_dev.h> | |
17 | #include <serial.h> | |
18 | #ifdef CONFIG_LOGBUFFER | |
19 | #include <logbuff.h> | |
20 | #endif | |
21 | ||
22 | #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) | |
23 | #include <i2c.h> | |
24 | #endif | |
25 | ||
26 | DECLARE_GLOBAL_DATA_PTR; | |
27 | ||
28 | static struct stdio_dev devs; | |
29 | struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL }; | |
30 | char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" }; | |
31 | ||
32 | #if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV) | |
33 | #define CONFIG_SYS_DEVICE_NULLDEV 1 | |
34 | #endif | |
35 | ||
36 | ||
37 | #ifdef CONFIG_SYS_DEVICE_NULLDEV | |
38 | void nulldev_putc(struct stdio_dev *dev, const char c) | |
39 | { | |
40 | /* nulldev is empty! */ | |
41 | } | |
42 | ||
43 | void nulldev_puts(struct stdio_dev *dev, const char *s) | |
44 | { | |
45 | /* nulldev is empty! */ | |
46 | } | |
47 | ||
48 | int nulldev_input(struct stdio_dev *dev) | |
49 | { | |
50 | /* nulldev is empty! */ | |
51 | return 0; | |
52 | } | |
53 | #endif | |
54 | ||
55 | void stdio_serial_putc(struct stdio_dev *dev, const char c) | |
56 | { | |
57 | serial_putc(c); | |
58 | } | |
59 | ||
60 | void stdio_serial_puts(struct stdio_dev *dev, const char *s) | |
61 | { | |
62 | serial_puts(s); | |
63 | } | |
64 | ||
65 | int stdio_serial_getc(struct stdio_dev *dev) | |
66 | { | |
67 | return serial_getc(); | |
68 | } | |
69 | ||
70 | int stdio_serial_tstc(struct stdio_dev *dev) | |
71 | { | |
72 | return serial_tstc(); | |
73 | } | |
74 | ||
75 | /************************************************************************** | |
76 | * SYSTEM DRIVERS | |
77 | ************************************************************************** | |
78 | */ | |
79 | ||
80 | static void drv_system_init (void) | |
81 | { | |
82 | struct stdio_dev dev; | |
83 | ||
84 | memset (&dev, 0, sizeof (dev)); | |
85 | ||
86 | strcpy (dev.name, "serial"); | |
87 | dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; | |
88 | dev.putc = stdio_serial_putc; | |
89 | dev.puts = stdio_serial_puts; | |
90 | dev.getc = stdio_serial_getc; | |
91 | dev.tstc = stdio_serial_tstc; | |
92 | stdio_register (&dev); | |
93 | ||
94 | #ifdef CONFIG_SYS_DEVICE_NULLDEV | |
95 | memset (&dev, 0, sizeof (dev)); | |
96 | ||
97 | strcpy (dev.name, "nulldev"); | |
98 | dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; | |
99 | dev.putc = nulldev_putc; | |
100 | dev.puts = nulldev_puts; | |
101 | dev.getc = nulldev_input; | |
102 | dev.tstc = nulldev_input; | |
103 | ||
104 | stdio_register (&dev); | |
105 | #endif | |
106 | } | |
107 | ||
108 | /************************************************************************** | |
109 | * DEVICES | |
110 | ************************************************************************** | |
111 | */ | |
112 | struct list_head* stdio_get_list(void) | |
113 | { | |
114 | return &(devs.list); | |
115 | } | |
116 | ||
117 | struct stdio_dev* stdio_get_by_name(const char *name) | |
118 | { | |
119 | struct list_head *pos; | |
120 | struct stdio_dev *dev; | |
121 | ||
122 | if(!name) | |
123 | return NULL; | |
124 | ||
125 | list_for_each(pos, &(devs.list)) { | |
126 | dev = list_entry(pos, struct stdio_dev, list); | |
127 | if(strcmp(dev->name, name) == 0) | |
128 | return dev; | |
129 | } | |
130 | ||
131 | return NULL; | |
132 | } | |
133 | ||
134 | struct stdio_dev* stdio_clone(struct stdio_dev *dev) | |
135 | { | |
136 | struct stdio_dev *_dev; | |
137 | ||
138 | if(!dev) | |
139 | return NULL; | |
140 | ||
141 | _dev = calloc(1, sizeof(struct stdio_dev)); | |
142 | ||
143 | if(!_dev) | |
144 | return NULL; | |
145 | ||
146 | memcpy(_dev, dev, sizeof(struct stdio_dev)); | |
147 | ||
148 | return _dev; | |
149 | } | |
150 | ||
151 | int stdio_register (struct stdio_dev * dev) | |
152 | { | |
153 | struct stdio_dev *_dev; | |
154 | ||
155 | _dev = stdio_clone(dev); | |
156 | if(!_dev) | |
157 | return -1; | |
158 | list_add_tail(&(_dev->list), &(devs.list)); | |
159 | return 0; | |
160 | } | |
161 | ||
162 | /* deregister the device "devname". | |
163 | * returns 0 if success, -1 if device is assigned and 1 if devname not found | |
164 | */ | |
165 | #ifdef CONFIG_SYS_STDIO_DEREGISTER | |
166 | int stdio_deregister(const char *devname) | |
167 | { | |
168 | int l; | |
169 | struct list_head *pos; | |
170 | struct stdio_dev *dev; | |
171 | char temp_names[3][16]; | |
172 | ||
173 | dev = stdio_get_by_name(devname); | |
174 | ||
175 | if(!dev) /* device not found */ | |
176 | return -1; | |
177 | /* get stdio devices (ListRemoveItem changes the dev list) */ | |
178 | for (l=0 ; l< MAX_FILES; l++) { | |
179 | if (stdio_devices[l] == dev) { | |
180 | /* Device is assigned -> report error */ | |
181 | return -1; | |
182 | } | |
183 | memcpy (&temp_names[l][0], | |
184 | stdio_devices[l]->name, | |
185 | sizeof(temp_names[l])); | |
186 | } | |
187 | ||
188 | list_del(&(dev->list)); | |
189 | ||
190 | /* reassign Device list */ | |
191 | list_for_each(pos, &(devs.list)) { | |
192 | dev = list_entry(pos, struct stdio_dev, list); | |
193 | for (l=0 ; l< MAX_FILES; l++) { | |
194 | if(strcmp(dev->name, temp_names[l]) == 0) | |
195 | stdio_devices[l] = dev; | |
196 | } | |
197 | } | |
198 | return 0; | |
199 | } | |
200 | #endif /* CONFIG_SYS_STDIO_DEREGISTER */ | |
201 | ||
202 | int stdio_init (void) | |
203 | { | |
204 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) | |
205 | /* already relocated for current ARM implementation */ | |
206 | ulong relocation_offset = gd->reloc_off; | |
207 | int i; | |
208 | ||
209 | /* relocate device name pointers */ | |
210 | for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) { | |
211 | stdio_names[i] = (char *) (((ulong) stdio_names[i]) + | |
212 | relocation_offset); | |
213 | } | |
214 | #endif /* CONFIG_NEEDS_MANUAL_RELOC */ | |
215 | ||
216 | /* Initialize the list */ | |
217 | INIT_LIST_HEAD(&(devs.list)); | |
218 | ||
219 | #ifdef CONFIG_SYS_I2C | |
220 | i2c_init_all(); | |
221 | #else | |
222 | #if defined(CONFIG_HARD_I2C) | |
223 | i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); | |
224 | #endif | |
225 | #endif | |
226 | #ifdef CONFIG_LCD | |
227 | drv_lcd_init (); | |
228 | #endif | |
229 | #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) | |
230 | drv_video_init (); | |
231 | #endif | |
232 | #ifdef CONFIG_KEYBOARD | |
233 | drv_keyboard_init (); | |
234 | #endif | |
235 | #ifdef CONFIG_LOGBUFFER | |
236 | drv_logbuff_init (); | |
237 | #endif | |
238 | drv_system_init (); | |
239 | serial_stdio_init (); | |
240 | #ifdef CONFIG_USB_TTY | |
241 | drv_usbtty_init (); | |
242 | #endif | |
243 | #ifdef CONFIG_NETCONSOLE | |
244 | drv_nc_init (); | |
245 | #endif | |
246 | #ifdef CONFIG_JTAG_CONSOLE | |
247 | drv_jtag_console_init (); | |
248 | #endif | |
249 | #ifdef CONFIG_CBMEM_CONSOLE | |
250 | cbmemc_init(); | |
251 | #endif | |
252 | return (0); | |
253 | } |