3 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
5 * SPDX-License-Identifier: GPL-2.0+
12 #include <stdio_dev.h>
14 #ifdef CONFIG_LOGBUFFER
17 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
21 DECLARE_GLOBAL_DATA_PTR;
23 static struct stdio_dev devs;
24 struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
25 char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
27 #if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV)
28 #define CONFIG_SYS_DEVICE_NULLDEV 1
32 #ifdef CONFIG_SYS_DEVICE_NULLDEV
33 void nulldev_putc(const char c)
35 /* nulldev is empty! */
38 void nulldev_puts(const char *s)
40 /* nulldev is empty! */
43 int nulldev_input(void)
45 /* nulldev is empty! */
50 /**************************************************************************
52 **************************************************************************
55 static void drv_system_init (void)
59 memset (&dev, 0, sizeof (dev));
61 strcpy (dev.name, "serial");
62 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
63 dev.putc = serial_putc;
64 dev.puts = serial_puts;
65 dev.getc = serial_getc;
66 dev.tstc = serial_tstc;
67 stdio_register (&dev);
69 #ifdef CONFIG_SYS_DEVICE_NULLDEV
70 memset (&dev, 0, sizeof (dev));
72 strcpy (dev.name, "nulldev");
73 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
74 dev.putc = nulldev_putc;
75 dev.puts = nulldev_puts;
76 dev.getc = nulldev_input;
77 dev.tstc = nulldev_input;
79 stdio_register (&dev);
83 /**************************************************************************
85 **************************************************************************
87 struct list_head* stdio_get_list(void)
92 struct stdio_dev* stdio_get_by_name(const char *name)
94 struct list_head *pos;
95 struct stdio_dev *dev;
100 list_for_each(pos, &(devs.list)) {
101 dev = list_entry(pos, struct stdio_dev, list);
102 if(strcmp(dev->name, name) == 0)
109 struct stdio_dev* stdio_clone(struct stdio_dev *dev)
111 struct stdio_dev *_dev;
116 _dev = calloc(1, sizeof(struct stdio_dev));
121 memcpy(_dev, dev, sizeof(struct stdio_dev));
126 int stdio_register (struct stdio_dev * dev)
128 struct stdio_dev *_dev;
130 _dev = stdio_clone(dev);
133 list_add_tail(&(_dev->list), &(devs.list));
137 /* deregister the device "devname".
138 * returns 0 if success, -1 if device is assigned and 1 if devname not found
140 #ifdef CONFIG_SYS_STDIO_DEREGISTER
141 int stdio_deregister(const char *devname)
144 struct list_head *pos;
145 struct stdio_dev *dev;
146 char temp_names[3][16];
148 dev = stdio_get_by_name(devname);
150 if(!dev) /* device not found */
152 /* get stdio devices (ListRemoveItem changes the dev list) */
153 for (l=0 ; l< MAX_FILES; l++) {
154 if (stdio_devices[l] == dev) {
155 /* Device is assigned -> report error */
158 memcpy (&temp_names[l][0],
159 stdio_devices[l]->name,
160 sizeof(temp_names[l]));
163 list_del(&(dev->list));
165 /* reassign Device list */
166 list_for_each(pos, &(devs.list)) {
167 dev = list_entry(pos, struct stdio_dev, list);
168 for (l=0 ; l< MAX_FILES; l++) {
169 if(strcmp(dev->name, temp_names[l]) == 0)
170 stdio_devices[l] = dev;
175 #endif /* CONFIG_SYS_STDIO_DEREGISTER */
177 int stdio_init (void)
179 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
180 /* already relocated for current ARM implementation */
181 ulong relocation_offset = gd->reloc_off;
184 /* relocate device name pointers */
185 for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
186 stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
189 #endif /* CONFIG_NEEDS_MANUAL_RELOC */
191 /* Initialize the list */
192 INIT_LIST_HEAD(&(devs.list));
194 #ifdef CONFIG_ARM_DCC
197 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
198 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
203 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
206 #ifdef CONFIG_KEYBOARD
207 drv_keyboard_init ();
209 #ifdef CONFIG_LOGBUFFER
213 serial_stdio_init ();
214 #ifdef CONFIG_USB_TTY
217 #ifdef CONFIG_NETCONSOLE
220 #ifdef CONFIG_JTAG_CONSOLE
221 drv_jtag_console_init ();
223 #ifdef CONFIG_CBMEM_CONSOLE