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(const char c) 39 { 40 /* nulldev is empty! */ 41 } 42 43 void nulldev_puts(const char *s) 44 { 45 /* nulldev is empty! */ 46 } 47 48 int nulldev_input(void) 49 { 50 /* nulldev is empty! */ 51 return 0; 52 } 53 #endif 54 55 /************************************************************************** 56 * SYSTEM DRIVERS 57 ************************************************************************** 58 */ 59 60 static void drv_system_init (void) 61 { 62 struct stdio_dev dev; 63 64 memset (&dev, 0, sizeof (dev)); 65 66 strcpy (dev.name, "serial"); 67 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; 68 dev.putc = serial_putc; 69 dev.puts = serial_puts; 70 dev.getc = serial_getc; 71 dev.tstc = serial_tstc; 72 stdio_register (&dev); 73 74 #ifdef CONFIG_SYS_DEVICE_NULLDEV 75 memset (&dev, 0, sizeof (dev)); 76 77 strcpy (dev.name, "nulldev"); 78 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; 79 dev.putc = nulldev_putc; 80 dev.puts = nulldev_puts; 81 dev.getc = nulldev_input; 82 dev.tstc = nulldev_input; 83 84 stdio_register (&dev); 85 #endif 86 } 87 88 /************************************************************************** 89 * DEVICES 90 ************************************************************************** 91 */ 92 struct list_head* stdio_get_list(void) 93 { 94 return &(devs.list); 95 } 96 97 struct stdio_dev* stdio_get_by_name(const char *name) 98 { 99 struct list_head *pos; 100 struct stdio_dev *dev; 101 102 if(!name) 103 return NULL; 104 105 list_for_each(pos, &(devs.list)) { 106 dev = list_entry(pos, struct stdio_dev, list); 107 if(strcmp(dev->name, name) == 0) 108 return dev; 109 } 110 111 return NULL; 112 } 113 114 struct stdio_dev* stdio_clone(struct stdio_dev *dev) 115 { 116 struct stdio_dev *_dev; 117 118 if(!dev) 119 return NULL; 120 121 _dev = calloc(1, sizeof(struct stdio_dev)); 122 123 if(!_dev) 124 return NULL; 125 126 memcpy(_dev, dev, sizeof(struct stdio_dev)); 127 128 return _dev; 129 } 130 131 int stdio_register (struct stdio_dev * dev) 132 { 133 struct stdio_dev *_dev; 134 135 _dev = stdio_clone(dev); 136 if(!_dev) 137 return -1; 138 list_add_tail(&(_dev->list), &(devs.list)); 139 return 0; 140 } 141 142 /* deregister the device "devname". 143 * returns 0 if success, -1 if device is assigned and 1 if devname not found 144 */ 145 #ifdef CONFIG_SYS_STDIO_DEREGISTER 146 int stdio_deregister(const char *devname) 147 { 148 int l; 149 struct list_head *pos; 150 struct stdio_dev *dev; 151 char temp_names[3][16]; 152 153 dev = stdio_get_by_name(devname); 154 155 if(!dev) /* device not found */ 156 return -1; 157 /* get stdio devices (ListRemoveItem changes the dev list) */ 158 for (l=0 ; l< MAX_FILES; l++) { 159 if (stdio_devices[l] == dev) { 160 /* Device is assigned -> report error */ 161 return -1; 162 } 163 memcpy (&temp_names[l][0], 164 stdio_devices[l]->name, 165 sizeof(temp_names[l])); 166 } 167 168 list_del(&(dev->list)); 169 170 /* reassign Device list */ 171 list_for_each(pos, &(devs.list)) { 172 dev = list_entry(pos, struct stdio_dev, list); 173 for (l=0 ; l< MAX_FILES; l++) { 174 if(strcmp(dev->name, temp_names[l]) == 0) 175 stdio_devices[l] = dev; 176 } 177 } 178 return 0; 179 } 180 #endif /* CONFIG_SYS_STDIO_DEREGISTER */ 181 182 int stdio_init (void) 183 { 184 #if defined(CONFIG_NEEDS_MANUAL_RELOC) 185 /* already relocated for current ARM implementation */ 186 ulong relocation_offset = gd->reloc_off; 187 int i; 188 189 /* relocate device name pointers */ 190 for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) { 191 stdio_names[i] = (char *) (((ulong) stdio_names[i]) + 192 relocation_offset); 193 } 194 #endif /* CONFIG_NEEDS_MANUAL_RELOC */ 195 196 /* Initialize the list */ 197 INIT_LIST_HEAD(&(devs.list)); 198 199 #ifdef CONFIG_SYS_I2C 200 i2c_init_all(); 201 #else 202 #if defined(CONFIG_HARD_I2C) 203 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 204 #endif 205 #endif 206 #ifdef CONFIG_LCD 207 drv_lcd_init (); 208 #endif 209 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) 210 drv_video_init (); 211 #endif 212 #ifdef CONFIG_KEYBOARD 213 drv_keyboard_init (); 214 #endif 215 #ifdef CONFIG_LOGBUFFER 216 drv_logbuff_init (); 217 #endif 218 drv_system_init (); 219 serial_stdio_init (); 220 #ifdef CONFIG_USB_TTY 221 drv_usbtty_init (); 222 #endif 223 #ifdef CONFIG_NETCONSOLE 224 drv_nc_init (); 225 #endif 226 #ifdef CONFIG_JTAG_CONSOLE 227 drv_jtag_console_init (); 228 #endif 229 #ifdef CONFIG_CBMEM_CONSOLE 230 cbmemc_init(); 231 #endif 232 return (0); 233 } 234