]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/stdio.c
2 * Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net>
4 * Changes for multibus/multiadapter I2C support.
7 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
9 * SPDX-License-Identifier: GPL-2.0+
18 #include <stdio_dev.h>
20 #ifdef CONFIG_LOGBUFFER
24 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
28 #include <dm/device-internal.h>
30 DECLARE_GLOBAL_DATA_PTR
;
32 static struct stdio_dev devs
;
33 struct stdio_dev
*stdio_devices
[] = { NULL
, NULL
, NULL
};
34 char *stdio_names
[MAX_FILES
] = { "stdin", "stdout", "stderr" };
36 #if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV)
37 #define CONFIG_SYS_DEVICE_NULLDEV 1
40 #ifdef CONFIG_SYS_STDIO_DEREGISTER
41 #define CONFIG_SYS_DEVICE_NULLDEV 1
44 #ifdef CONFIG_SYS_DEVICE_NULLDEV
45 static void nulldev_putc(struct stdio_dev
*dev
, const char c
)
47 /* nulldev is empty! */
50 static void nulldev_puts(struct stdio_dev
*dev
, const char *s
)
52 /* nulldev is empty! */
55 static int nulldev_input(struct stdio_dev
*dev
)
57 /* nulldev is empty! */
62 static void stdio_serial_putc(struct stdio_dev
*dev
, const char c
)
67 static void stdio_serial_puts(struct stdio_dev
*dev
, const char *s
)
72 static int stdio_serial_getc(struct stdio_dev
*dev
)
77 static int stdio_serial_tstc(struct stdio_dev
*dev
)
82 /**************************************************************************
84 **************************************************************************
87 static void drv_system_init (void)
91 memset (&dev
, 0, sizeof (dev
));
93 strcpy (dev
.name
, "serial");
94 dev
.flags
= DEV_FLAGS_OUTPUT
| DEV_FLAGS_INPUT
;
95 dev
.putc
= stdio_serial_putc
;
96 dev
.puts
= stdio_serial_puts
;
97 dev
.getc
= stdio_serial_getc
;
98 dev
.tstc
= stdio_serial_tstc
;
99 stdio_register (&dev
);
101 #ifdef CONFIG_SYS_DEVICE_NULLDEV
102 memset (&dev
, 0, sizeof (dev
));
104 strcpy (dev
.name
, "nulldev");
105 dev
.flags
= DEV_FLAGS_OUTPUT
| DEV_FLAGS_INPUT
;
106 dev
.putc
= nulldev_putc
;
107 dev
.puts
= nulldev_puts
;
108 dev
.getc
= nulldev_input
;
109 dev
.tstc
= nulldev_input
;
111 stdio_register (&dev
);
115 /**************************************************************************
117 **************************************************************************
119 struct list_head
* stdio_get_list(void)
124 struct stdio_dev
* stdio_get_by_name(const char *name
)
126 struct list_head
*pos
;
127 struct stdio_dev
*dev
;
132 list_for_each(pos
, &(devs
.list
)) {
133 dev
= list_entry(pos
, struct stdio_dev
, list
);
134 if(strcmp(dev
->name
, name
) == 0)
141 struct stdio_dev
* stdio_clone(struct stdio_dev
*dev
)
143 struct stdio_dev
*_dev
;
148 _dev
= calloc(1, sizeof(struct stdio_dev
));
153 memcpy(_dev
, dev
, sizeof(struct stdio_dev
));
158 int stdio_register_dev(struct stdio_dev
*dev
, struct stdio_dev
**devp
)
160 struct stdio_dev
*_dev
;
162 _dev
= stdio_clone(dev
);
165 list_add_tail(&(_dev
->list
), &(devs
.list
));
172 int stdio_register(struct stdio_dev
*dev
)
174 return stdio_register_dev(dev
, NULL
);
177 /* deregister the device "devname".
178 * returns 0 if success, -1 if device is assigned and 1 if devname not found
180 #ifdef CONFIG_SYS_STDIO_DEREGISTER
181 int stdio_deregister_dev(struct stdio_dev
*dev
, int force
)
184 struct list_head
*pos
;
185 char temp_names
[3][16];
187 /* get stdio devices (ListRemoveItem changes the dev list) */
188 for (l
=0 ; l
< MAX_FILES
; l
++) {
189 if (stdio_devices
[l
] == dev
) {
191 strcpy(temp_names
[l
], "nulldev");
194 /* Device is assigned -> report error */
197 memcpy (&temp_names
[l
][0],
198 stdio_devices
[l
]->name
,
199 sizeof(temp_names
[l
]));
202 list_del(&(dev
->list
));
205 /* reassign Device list */
206 list_for_each(pos
, &(devs
.list
)) {
207 dev
= list_entry(pos
, struct stdio_dev
, list
);
208 for (l
=0 ; l
< MAX_FILES
; l
++) {
209 if(strcmp(dev
->name
, temp_names
[l
]) == 0)
210 stdio_devices
[l
] = dev
;
216 int stdio_deregister(const char *devname
, int force
)
218 struct stdio_dev
*dev
;
220 dev
= stdio_get_by_name(devname
);
222 if (!dev
) /* device not found */
225 return stdio_deregister_dev(dev
, force
);
227 #endif /* CONFIG_SYS_STDIO_DEREGISTER */
229 int stdio_init_tables(void)
231 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
232 /* already relocated for current ARM implementation */
233 ulong relocation_offset
= gd
->reloc_off
;
236 /* relocate device name pointers */
237 for (i
= 0; i
< (sizeof (stdio_names
) / sizeof (char *)); ++i
) {
238 stdio_names
[i
] = (char *) (((ulong
) stdio_names
[i
]) +
241 #endif /* CONFIG_NEEDS_MANUAL_RELOC */
243 /* Initialize the list */
244 INIT_LIST_HEAD(&(devs
.list
));
249 int stdio_add_devices(void)
251 #ifdef CONFIG_DM_KEYBOARD
257 * For now we probe all the devices here. At some point this should be
258 * done only when the devices are required - e.g. we have a list of
259 * input devices to start up in the stdin environment variable. That
260 * work probably makes more sense when stdio itself is converted to
263 * TODO(sjg@chromium.org): Convert changing uclass_first_device() etc.
264 * to return the device even on error. Then we could use that here.
266 ret
= uclass_get(UCLASS_KEYBOARD
, &uc
);
270 /* Don't report errors to the caller - assume that they are non-fatal */
271 uclass_foreach_dev(dev
, uc
) {
272 ret
= device_probe(dev
);
274 printf("Failed to probe keyboard '%s'\n", dev
->name
);
277 #ifdef CONFIG_SYS_I2C
280 #if defined(CONFIG_HARD_I2C)
281 i2c_init (CONFIG_SYS_I2C_SPEED
, CONFIG_SYS_I2C_SLAVE
);
284 #ifdef CONFIG_DM_VIDEO
285 struct udevice
*vdev
;
286 # ifndef CONFIG_DM_KEYBOARD
290 for (ret
= uclass_first_device(UCLASS_VIDEO
, &vdev
);
292 ret
= uclass_next_device(&vdev
))
295 printf("%s: Video device failed (ret=%d)\n", __func__
, ret
);
297 # if defined(CONFIG_LCD)
300 # if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
303 #endif /* CONFIG_DM_VIDEO */
304 #if defined(CONFIG_KEYBOARD) && !defined(CONFIG_DM_KEYBOARD)
305 drv_keyboard_init ();
307 #ifdef CONFIG_LOGBUFFER
311 serial_stdio_init ();
312 #ifdef CONFIG_USB_TTY
315 #ifdef CONFIG_NETCONSOLE
318 #ifdef CONFIG_JTAG_CONSOLE
319 drv_jtag_console_init ();
321 #ifdef CONFIG_CBMEM_CONSOLE