]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/devices.c
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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)
38 device_t
*stdio_devices
[] = { NULL
, NULL
, NULL
};
39 char *stdio_names
[MAX_FILES
] = { "stdin", "stdout", "stderr" };
41 #if defined(CONFIG_SPLASH_SCREEN) && !defined(CFG_DEVICE_NULLDEV)
42 #define CFG_DEVICE_NULLDEV 1
46 #ifdef CFG_DEVICE_NULLDEV
47 void nulldev_putc(const char c
)
49 /* nulldev is empty! */
52 void nulldev_puts(const char *s
)
54 /* nulldev is empty! */
57 int nulldev_input(void)
59 /* nulldev is empty! */
64 /**************************************************************************
66 **************************************************************************
69 static void drv_system_init (void)
73 memset (&dev
, 0, sizeof (dev
));
75 strcpy (dev
.name
, "serial");
76 dev
.flags
= DEV_FLAGS_OUTPUT
| DEV_FLAGS_INPUT
| DEV_FLAGS_SYSTEM
;
77 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
78 dev
.putc
= serial_buffered_putc
;
79 dev
.puts
= serial_buffered_puts
;
80 dev
.getc
= serial_buffered_getc
;
81 dev
.tstc
= serial_buffered_tstc
;
83 dev
.putc
= serial_putc
;
84 dev
.puts
= serial_puts
;
85 dev
.getc
= serial_getc
;
86 dev
.tstc
= serial_tstc
;
89 device_register (&dev
);
91 #ifdef CFG_DEVICE_NULLDEV
92 memset (&dev
, 0, sizeof (dev
));
94 strcpy (dev
.name
, "nulldev");
95 dev
.flags
= DEV_FLAGS_OUTPUT
| DEV_FLAGS_INPUT
| DEV_FLAGS_SYSTEM
;
96 dev
.putc
= nulldev_putc
;
97 dev
.puts
= nulldev_puts
;
98 dev
.getc
= nulldev_input
;
99 dev
.tstc
= nulldev_input
;
101 device_register (&dev
);
105 /**************************************************************************
107 **************************************************************************
110 int device_register (device_t
* dev
)
112 ListInsertItem (devlist
, dev
, LIST_END
);
116 /* deregister the device "devname".
117 * returns 0 if success, -1 if device is assigned and 1 if devname not found
119 #ifdef CFG_DEVICE_DEREGISTER
120 int device_deregister(char *devname
)
123 device_t
*dev
= NULL
;
124 char temp_names
[3][8];
127 for (i
=1; i
<=ListNumItems(devlist
); i
++) {
128 dev
= ListGetPtrToItem (devlist
, i
);
129 if(strcmp(dev
->name
,devname
)==0) {
134 if(dev_index
<0) /* device not found */
136 /* get stdio devices (ListRemoveItem changes the dev list) */
137 for (l
=0 ; l
< MAX_FILES
; l
++) {
138 if (stdio_devices
[l
] == dev
) {
139 /* Device is assigned -> report error */
142 memcpy (&temp_names
[l
][0],
143 stdio_devices
[l
]->name
,
144 sizeof(stdio_devices
[l
]->name
));
146 ListRemoveItem(devlist
,NULL
,dev_index
);
147 /* reassign Device list */
148 for (i
=1; i
<=ListNumItems(devlist
); i
++) {
149 dev
= ListGetPtrToItem (devlist
, i
);
150 for (l
=0 ; l
< MAX_FILES
; l
++) {
151 if(strcmp(dev
->name
,temp_names
[l
])==0) {
152 stdio_devices
[l
] = dev
;
158 #endif /* CFG_DEVICE_DEREGISTER */
160 int devices_init (void)
162 #ifndef CONFIG_ARM /* already relocated for current ARM implementation */
163 DECLARE_GLOBAL_DATA_PTR
;
165 ulong relocation_offset
= gd
->reloc_off
;
168 /* relocate device name pointers */
169 for (i
= 0; i
< (sizeof (stdio_names
) / sizeof (char *)); ++i
) {
170 stdio_names
[i
] = (char *) (((ulong
) stdio_names
[i
]) +
175 /* Initialize the list */
176 devlist
= ListCreate (sizeof (device_t
));
178 if (devlist
== NULL
) {
179 eputs ("Cannot initialize the list of devices!\n");
182 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
183 i2c_init (CFG_I2C_SPEED
, CFG_I2C_SLAVE
);
188 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
191 #ifdef CONFIG_KEYBOARD
192 drv_keyboard_init ();
194 #ifdef CONFIG_LOGBUFFER
198 #ifdef CONFIG_SERIAL_MULTI
199 serial_devices_init ();
201 #ifdef CONFIG_USB_TTY
204 #ifdef CONFIG_NETCONSOLE
211 int devices_done (void)
213 ListDispose (devlist
);