1 /* 2 * Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net> 3 * 4 * Changes for multibus/multiadapter I2C support. 5 * 6 * (C) Copyright 2000 7 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it 8 * 9 * SPDX-License-Identifier: GPL-2.0+ 10 */ 11 12 #include <config.h> 13 #include <common.h> 14 #include <stdarg.h> 15 #include <malloc.h> 16 #include <stdio_dev.h> 17 #include <serial.h> 18 #ifdef CONFIG_LOGBUFFER 19 #include <logbuff.h> 20 #endif 21 22 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) 23 #include <i2c.h> 24 #endif 25 26 DECLARE_GLOBAL_DATA_PTR; 27 28 static struct stdio_dev devs; 29 struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL }; 30 char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" }; 31 32 #if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV) 33 #define CONFIG_SYS_DEVICE_NULLDEV 1 34 #endif 35 36 37 #ifdef CONFIG_SYS_DEVICE_NULLDEV 38 void nulldev_putc(struct stdio_dev *dev, const char c) 39 { 40 /* nulldev is empty! */ 41 } 42 43 void nulldev_puts(struct stdio_dev *dev, const char *s) 44 { 45 /* nulldev is empty! */ 46 } 47 48 int nulldev_input(struct stdio_dev *dev) 49 { 50 /* nulldev is empty! */ 51 return 0; 52 } 53 #endif 54 55 void stdio_serial_putc(struct stdio_dev *dev, const char c) 56 { 57 serial_putc(c); 58 } 59 60 void stdio_serial_puts(struct stdio_dev *dev, const char *s) 61 { 62 serial_puts(s); 63 } 64 65 int stdio_serial_getc(struct stdio_dev *dev) 66 { 67 return serial_getc(); 68 } 69 70 int stdio_serial_tstc(struct stdio_dev *dev) 71 { 72 return serial_tstc(); 73 } 74 75 /************************************************************************** 76 * SYSTEM DRIVERS 77 ************************************************************************** 78 */ 79 80 static void drv_system_init (void) 81 { 82 struct stdio_dev dev; 83 84 memset (&dev, 0, sizeof (dev)); 85 86 strcpy (dev.name, "serial"); 87 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; 88 dev.putc = stdio_serial_putc; 89 dev.puts = stdio_serial_puts; 90 dev.getc = stdio_serial_getc; 91 dev.tstc = stdio_serial_tstc; 92 stdio_register (&dev); 93 94 #ifdef CONFIG_SYS_DEVICE_NULLDEV 95 memset (&dev, 0, sizeof (dev)); 96 97 strcpy (dev.name, "nulldev"); 98 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; 99 dev.putc = nulldev_putc; 100 dev.puts = nulldev_puts; 101 dev.getc = nulldev_input; 102 dev.tstc = nulldev_input; 103 104 stdio_register (&dev); 105 #endif 106 } 107 108 /************************************************************************** 109 * DEVICES 110 ************************************************************************** 111 */ 112 struct list_head* stdio_get_list(void) 113 { 114 return &(devs.list); 115 } 116 117 struct stdio_dev* stdio_get_by_name(const char *name) 118 { 119 struct list_head *pos; 120 struct stdio_dev *dev; 121 122 if(!name) 123 return NULL; 124 125 list_for_each(pos, &(devs.list)) { 126 dev = list_entry(pos, struct stdio_dev, list); 127 if(strcmp(dev->name, name) == 0) 128 return dev; 129 } 130 131 return NULL; 132 } 133 134 struct stdio_dev* stdio_clone(struct stdio_dev *dev) 135 { 136 struct stdio_dev *_dev; 137 138 if(!dev) 139 return NULL; 140 141 _dev = calloc(1, sizeof(struct stdio_dev)); 142 143 if(!_dev) 144 return NULL; 145 146 memcpy(_dev, dev, sizeof(struct stdio_dev)); 147 148 return _dev; 149 } 150 151 int stdio_register (struct stdio_dev * dev) 152 { 153 struct stdio_dev *_dev; 154 155 _dev = stdio_clone(dev); 156 if(!_dev) 157 return -1; 158 list_add_tail(&(_dev->list), &(devs.list)); 159 return 0; 160 } 161 162 /* deregister the device "devname". 163 * returns 0 if success, -1 if device is assigned and 1 if devname not found 164 */ 165 #ifdef CONFIG_SYS_STDIO_DEREGISTER 166 int stdio_deregister(const char *devname) 167 { 168 int l; 169 struct list_head *pos; 170 struct stdio_dev *dev; 171 char temp_names[3][16]; 172 173 dev = stdio_get_by_name(devname); 174 175 if(!dev) /* device not found */ 176 return -1; 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 */ 181 return -1; 182 } 183 memcpy (&temp_names[l][0], 184 stdio_devices[l]->name, 185 sizeof(temp_names[l])); 186 } 187 188 list_del(&(dev->list)); 189 190 /* reassign Device list */ 191 list_for_each(pos, &(devs.list)) { 192 dev = list_entry(pos, struct stdio_dev, list); 193 for (l=0 ; l< MAX_FILES; l++) { 194 if(strcmp(dev->name, temp_names[l]) == 0) 195 stdio_devices[l] = dev; 196 } 197 } 198 return 0; 199 } 200 #endif /* CONFIG_SYS_STDIO_DEREGISTER */ 201 202 int stdio_init (void) 203 { 204 #if defined(CONFIG_NEEDS_MANUAL_RELOC) 205 /* already relocated for current ARM implementation */ 206 ulong relocation_offset = gd->reloc_off; 207 int i; 208 209 /* relocate device name pointers */ 210 for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) { 211 stdio_names[i] = (char *) (((ulong) stdio_names[i]) + 212 relocation_offset); 213 } 214 #endif /* CONFIG_NEEDS_MANUAL_RELOC */ 215 216 /* Initialize the list */ 217 INIT_LIST_HEAD(&(devs.list)); 218 219 #ifdef CONFIG_SYS_I2C 220 i2c_init_all(); 221 #else 222 #if defined(CONFIG_HARD_I2C) 223 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 224 #endif 225 #endif 226 #ifdef CONFIG_LCD 227 drv_lcd_init (); 228 #endif 229 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) 230 drv_video_init (); 231 #endif 232 #ifdef CONFIG_KEYBOARD 233 drv_keyboard_init (); 234 #endif 235 #ifdef CONFIG_LOGBUFFER 236 drv_logbuff_init (); 237 #endif 238 drv_system_init (); 239 serial_stdio_init (); 240 #ifdef CONFIG_USB_TTY 241 drv_usbtty_init (); 242 #endif 243 #ifdef CONFIG_NETCONSOLE 244 drv_nc_init (); 245 #endif 246 #ifdef CONFIG_JTAG_CONSOLE 247 drv_jtag_console_init (); 248 #endif 249 #ifdef CONFIG_CBMEM_CONSOLE 250 cbmemc_init(); 251 #endif 252 return (0); 253 } 254