]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/devices.c
7d0ac2e9248af2f060c540bcb4bfc01fcb2d3678
3 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 #ifdef CONFIG_LOGBUFFER
33 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
37 DECLARE_GLOBAL_DATA_PTR
;
40 device_t
*stdio_devices
[] = { NULL
, NULL
, NULL
};
41 char *stdio_names
[MAX_FILES
] = { "stdin", "stdout", "stderr" };
43 #if defined(CONFIG_SPLASH_SCREEN) && !defined(CFG_DEVICE_NULLDEV)
44 #define CFG_DEVICE_NULLDEV 1
48 #ifdef CFG_DEVICE_NULLDEV
49 void nulldev_putc(const char c
)
51 /* nulldev is empty! */
54 void nulldev_puts(const char *s
)
56 /* nulldev is empty! */
59 int nulldev_input(void)
61 /* nulldev is empty! */
66 /**************************************************************************
68 **************************************************************************
71 static void drv_system_init (void)
75 memset (&dev
, 0, sizeof (dev
));
77 strcpy (dev
.name
, "serial");
78 dev
.flags
= DEV_FLAGS_OUTPUT
| DEV_FLAGS_INPUT
| DEV_FLAGS_SYSTEM
;
79 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
80 dev
.putc
= serial_buffered_putc
;
81 dev
.puts
= serial_buffered_puts
;
82 dev
.getc
= serial_buffered_getc
;
83 dev
.tstc
= serial_buffered_tstc
;
85 dev
.putc
= serial_putc
;
86 dev
.puts
= serial_puts
;
87 dev
.getc
= serial_getc
;
88 dev
.tstc
= serial_tstc
;
91 device_register (&dev
);
93 #ifdef CFG_DEVICE_NULLDEV
94 memset (&dev
, 0, sizeof (dev
));
96 strcpy (dev
.name
, "nulldev");
97 dev
.flags
= DEV_FLAGS_OUTPUT
| DEV_FLAGS_INPUT
| DEV_FLAGS_SYSTEM
;
98 dev
.putc
= nulldev_putc
;
99 dev
.puts
= nulldev_puts
;
100 dev
.getc
= nulldev_input
;
101 dev
.tstc
= nulldev_input
;
103 device_register (&dev
);
107 /**************************************************************************
109 **************************************************************************
111 struct list_head
* device_get_list(void)
116 device_t
* device_get_by_name(char* name
)
118 struct list_head
*pos
;
124 list_for_each(pos
, &(devs
.list
)) {
125 dev
= list_entry(pos
, device_t
, list
);
126 if(strcmp(dev
->name
, name
) == 0)
133 device_t
* device_clone(device_t
*dev
)
140 _dev
= calloc(1, sizeof(device_t
));
145 memcpy(_dev
, dev
, sizeof(device_t
));
146 strncpy(_dev
->name
, dev
->name
, 16);
151 int device_register (device_t
* dev
)
155 _dev
= device_clone(dev
);
158 list_add_tail(&(_dev
->list
), &(devs
.list
));
162 /* deregister the device "devname".
163 * returns 0 if success, -1 if device is assigned and 1 if devname not found
165 #ifdef CFG_DEVICE_DEREGISTER
166 int device_deregister(char *devname
)
169 struct list_head
*pos
;
171 char temp_names
[3][8];
173 dev
= device_get_by_name(devname
);
175 if(!dev
) /* device not found */
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 */
183 memcpy (&temp_names
[l
][0],
184 stdio_devices
[l
]->name
,
185 sizeof(stdio_devices
[l
]->name
));
188 list_del(&(dev
->list
));
190 /* reassign Device list */
191 list_for_each(pos
, &(devs
.list
)) {
192 dev
= list_entry(pos
, device_t
, list
);
193 for (l
=0 ; l
< MAX_FILES
; l
++) {
194 if(strcmp(dev
->name
, temp_names
[l
]) == 0)
195 stdio_devices
[l
] = dev
;
200 #endif /* CFG_DEVICE_DEREGISTER */
202 int devices_init (void)
204 #ifndef CONFIG_ARM /* already relocated for current ARM implementation */
205 ulong relocation_offset
= gd
->reloc_off
;
208 /* relocate device name pointers */
209 for (i
= 0; i
< (sizeof (stdio_names
) / sizeof (char *)); ++i
) {
210 stdio_names
[i
] = (char *) (((ulong
) stdio_names
[i
]) +
215 /* Initialize the list */
216 INIT_LIST_HEAD(&(devs
.list
));
218 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
219 i2c_init (CFG_I2C_SPEED
, CFG_I2C_SLAVE
);
224 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
227 #ifdef CONFIG_KEYBOARD
228 drv_keyboard_init ();
230 #ifdef CONFIG_LOGBUFFER
234 #ifdef CONFIG_SERIAL_MULTI
235 serial_devices_init ();
237 #ifdef CONFIG_USB_TTY
240 #ifdef CONFIG_NETCONSOLE