/* * (C) Copyright 2000 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <config.h> #include <common.h> #include <stdarg.h> #include <malloc.h> #include <devices.h> #include <serial.h> #ifdef CONFIG_LOGBUFFER #include <logbuff.h> #endif #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) #include <i2c.h> #endif DECLARE_GLOBAL_DATA_PTR; static device_t devs; device_t *stdio_devices[] = { NULL, NULL, NULL }; char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" }; #if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV) #define CONFIG_SYS_DEVICE_NULLDEV 1 #endif #ifdef CONFIG_SYS_DEVICE_NULLDEV void nulldev_putc(const char c) { /* nulldev is empty! */ } void nulldev_puts(const char *s) { /* nulldev is empty! */ } int nulldev_input(void) { /* nulldev is empty! */ return 0; } #endif /************************************************************************** * SYSTEM DRIVERS ************************************************************************** */ static void drv_system_init (void) { device_t dev; memset (&dev, 0, sizeof (dev)); strcpy (dev.name, "serial"); dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; #ifdef CONFIG_SERIAL_SOFTWARE_FIFO dev.putc = serial_buffered_putc; dev.puts = serial_buffered_puts; dev.getc = serial_buffered_getc; dev.tstc = serial_buffered_tstc; #else dev.putc = serial_putc; dev.puts = serial_puts; dev.getc = serial_getc; dev.tstc = serial_tstc; #endif device_register (&dev); #ifdef CONFIG_SYS_DEVICE_NULLDEV memset (&dev, 0, sizeof (dev)); strcpy (dev.name, "nulldev"); dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; dev.putc = nulldev_putc; dev.puts = nulldev_puts; dev.getc = nulldev_input; dev.tstc = nulldev_input; device_register (&dev); #endif } /************************************************************************** * DEVICES ************************************************************************** */ struct list_head* device_get_list(void) { return &(devs.list); } device_t* device_get_by_name(char* name) { struct list_head *pos; device_t *dev; if(!name) return NULL; list_for_each(pos, &(devs.list)) { dev = list_entry(pos, device_t, list); if(strcmp(dev->name, name) == 0) return dev; } return NULL; } device_t* device_clone(device_t *dev) { device_t *_dev; if(!dev) return NULL; _dev = calloc(1, sizeof(device_t)); if(!_dev) return NULL; memcpy(_dev, dev, sizeof(device_t)); strncpy(_dev->name, dev->name, 16); return _dev; } int device_register (device_t * dev) { device_t *_dev; _dev = device_clone(dev); if(!_dev) return -1; list_add_tail(&(_dev->list), &(devs.list)); return 0; } /* deregister the device "devname". * returns 0 if success, -1 if device is assigned and 1 if devname not found */ #ifdef CONFIG_SYS_DEVICE_DEREGISTER int device_deregister(char *devname) { int l; struct list_head *pos; device_t *dev; char temp_names[3][8]; dev = device_get_by_name(devname); if(!dev) /* device not found */ return -1; /* get stdio devices (ListRemoveItem changes the dev list) */ for (l=0 ; l< MAX_FILES; l++) { if (stdio_devices[l] == dev) { /* Device is assigned -> report error */ return -1; } memcpy (&temp_names[l][0], stdio_devices[l]->name, sizeof(stdio_devices[l]->name)); } list_del(&(dev->list)); /* reassign Device list */ list_for_each(pos, &(devs.list)) { dev = list_entry(pos, device_t, list); for (l=0 ; l< MAX_FILES; l++) { if(strcmp(dev->name, temp_names[l]) == 0) stdio_devices[l] = dev; } } return 0; } #endif /* CONFIG_SYS_DEVICE_DEREGISTER */ int devices_init (void) { #ifndef CONFIG_ARM /* already relocated for current ARM implementation */ ulong relocation_offset = gd->reloc_off; int i; /* relocate device name pointers */ for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) { stdio_names[i] = (char *) (((ulong) stdio_names[i]) + relocation_offset); } #endif /* Initialize the list */ INIT_LIST_HEAD(&(devs.list)); #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); #endif #ifdef CONFIG_LCD drv_lcd_init (); #endif #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) drv_video_init (); #endif #ifdef CONFIG_KEYBOARD drv_keyboard_init (); #endif #ifdef CONFIG_LOGBUFFER drv_logbuff_init (); #endif drv_system_init (); #ifdef CONFIG_SERIAL_MULTI serial_devices_init (); #endif #ifdef CONFIG_USB_TTY drv_usbtty_init (); #endif #ifdef CONFIG_NETCONSOLE drv_nc_init (); #endif return (0); }