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);
287 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
290 #if defined(CONFIG_KEYBOARD) && !defined(CONFIG_DM_KEYBOARD)
291 drv_keyboard_init ();
293 #ifdef CONFIG_LOGBUFFER
297 serial_stdio_init ();
298 #ifdef CONFIG_USB_TTY
301 #ifdef CONFIG_NETCONSOLE
304 #ifdef CONFIG_JTAG_CONSOLE
305 drv_jtag_console_init ();
307 #ifdef CONFIG_CBMEM_CONSOLE