1 /* 2 * (C) Copyright 2000 3 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 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. 12 * 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. 17 * 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, 21 * MA 02111-1307 USA 22 */ 23 24 #include <config.h> 25 #include <common.h> 26 #include <stdarg.h> 27 #include <malloc.h> 28 #include <stdio_dev.h> 29 #include <serial.h> 30 #ifdef CONFIG_LOGBUFFER 31 #include <logbuff.h> 32 #endif 33 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) 34 #include <i2c.h> 35 #endif 36 37 DECLARE_GLOBAL_DATA_PTR; 38 39 static struct stdio_dev devs; 40 struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL }; 41 char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" }; 42 43 #if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV) 44 #define CONFIG_SYS_DEVICE_NULLDEV 1 45 #endif 46 47 48 #ifdef CONFIG_SYS_DEVICE_NULLDEV 49 void nulldev_putc(const char c) 50 { 51 /* nulldev is empty! */ 52 } 53 54 void nulldev_puts(const char *s) 55 { 56 /* nulldev is empty! */ 57 } 58 59 int nulldev_input(void) 60 { 61 /* nulldev is empty! */ 62 return 0; 63 } 64 #endif 65 66 /************************************************************************** 67 * SYSTEM DRIVERS 68 ************************************************************************** 69 */ 70 71 static void drv_system_init (void) 72 { 73 struct stdio_dev dev; 74 75 memset (&dev, 0, sizeof (dev)); 76 77 strcpy (dev.name, "serial"); 78 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; 79 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO 80 dev.putc = serial_buffered_putc; 81 dev.puts = serial_buffered_puts; 82 dev.getc = serial_buffered_getc; 83 dev.tstc = serial_buffered_tstc; 84 #else 85 dev.putc = serial_putc; 86 dev.puts = serial_puts; 87 dev.getc = serial_getc; 88 dev.tstc = serial_tstc; 89 #endif 90 91 stdio_register (&dev); 92 93 #ifdef CONFIG_SYS_DEVICE_NULLDEV 94 memset (&dev, 0, sizeof (dev)); 95 96 strcpy (dev.name, "nulldev"); 97 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; 98 dev.putc = nulldev_putc; 99 dev.puts = nulldev_puts; 100 dev.getc = nulldev_input; 101 dev.tstc = nulldev_input; 102 103 stdio_register (&dev); 104 #endif 105 } 106 107 /************************************************************************** 108 * DEVICES 109 ************************************************************************** 110 */ 111 struct list_head* stdio_get_list(void) 112 { 113 return &(devs.list); 114 } 115 116 struct stdio_dev* stdio_get_by_name(char* name) 117 { 118 struct list_head *pos; 119 struct stdio_dev *dev; 120 121 if(!name) 122 return NULL; 123 124 list_for_each(pos, &(devs.list)) { 125 dev = list_entry(pos, struct stdio_dev, list); 126 if(strcmp(dev->name, name) == 0) 127 return dev; 128 } 129 130 return NULL; 131 } 132 133 struct stdio_dev* stdio_clone(struct stdio_dev *dev) 134 { 135 struct stdio_dev *_dev; 136 137 if(!dev) 138 return NULL; 139 140 _dev = calloc(1, sizeof(struct stdio_dev)); 141 142 if(!_dev) 143 return NULL; 144 145 memcpy(_dev, dev, sizeof(struct stdio_dev)); 146 strncpy(_dev->name, dev->name, 16); 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(char *devname) 167 { 168 int l; 169 struct list_head *pos; 170 struct stdio_dev *dev; 171 char temp_names[3][8]; 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(stdio_devices[l]->name)); 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 #ifndef CONFIG_ARM /* already relocated for current ARM implementation */ 205 ulong relocation_offset = gd->reloc_off; 206 int i; 207 208 /* relocate device name pointers */ 209 for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) { 210 stdio_names[i] = (char *) (((ulong) stdio_names[i]) + 211 relocation_offset); 212 } 213 #endif 214 215 /* Initialize the list */ 216 INIT_LIST_HEAD(&(devs.list)); 217 218 #ifdef CONFIG_ARM_DCC_MULTI 219 drv_arm_dcc_init (); 220 #endif 221 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) 222 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 223 #endif 224 #ifdef CONFIG_LCD 225 drv_lcd_init (); 226 #endif 227 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) 228 drv_video_init (); 229 #endif 230 #ifdef CONFIG_KEYBOARD 231 drv_keyboard_init (); 232 #endif 233 #ifdef CONFIG_LOGBUFFER 234 drv_logbuff_init (); 235 #endif 236 drv_system_init (); 237 #ifdef CONFIG_SERIAL_MULTI 238 serial_stdio_init (); 239 #endif 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 249 250 return (0); 251 } 252