/* * (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> #ifdef CONFIG_LOGBUFFER #include <logbuff.h> #endif #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) #include <i2c.h> #endif list_t devlist = 0; device_t *stdio_devices[] = { NULL, NULL, NULL }; char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" }; #if defined(CONFIG_SPLASH_SCREEN) && !defined(CFG_DEVICE_NULLDEV) #define CFG_DEVICE_NULLDEV 1 #endif #ifdef CFG_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; #if 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 CFG_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 ************************************************************************** */ int device_register (device_t * dev) { ListInsertItem (devlist, dev, LIST_END); return 0; } /* deregister the device "devname". * returns 0 if success, -1 if device is assigned and 1 if devname not found */ #ifdef CFG_DEVICE_DEREGISTER int device_deregister(char *devname) { int i,l,dev_index; device_t *dev = NULL; char temp_names[3][8]; dev_index=-1; for (i=1; i<=ListNumItems(devlist); i++) { dev = ListGetPtrToItem (devlist, i); if(strcmp(dev->name,devname)==0) { dev_index=i; break; } } if(dev_index<0) /* device not found */ return 0; /* 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)); } ListRemoveItem(devlist,NULL,dev_index); /* reassign Device list */ for (i=1; i<=ListNumItems(devlist); i++) { dev = ListGetPtrToItem (devlist, i); for (l=0 ; l< MAX_FILES; l++) { if(strcmp(dev->name,temp_names[l])==0) { stdio_devices[l] = dev; } } } return 0; } #endif /* CFG_DEVICE_DEREGISTER */ int devices_init (void) { #ifndef CONFIG_ARM /* already relocated for current ARM implementation */ DECLARE_GLOBAL_DATA_PTR; 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 */ devlist = ListCreate (sizeof (device_t)); if (devlist == NULL) { eputs ("Cannot initialize the list of devices!\n"); return -1; } #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) i2c_init (CFG_I2C_SPEED, CFG_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 (); return (0); } int devices_done (void) { ListDispose (devlist); return 0; }