diff options
Diffstat (limited to 'common/stdio.c')
| -rw-r--r-- | common/stdio.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/common/stdio.c b/common/stdio.c new file mode 100644 index 0000000..697df5a --- /dev/null +++ b/common/stdio.c @@ -0,0 +1,251 @@ +/* + * (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 <stdio_dev.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 struct stdio_dev devs; +struct stdio_dev *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) +{ + struct stdio_dev 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 + + stdio_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; + + stdio_register (&dev); +#endif +} + +/************************************************************************** + * DEVICES + ************************************************************************** + */ +struct list_head* stdio_get_list(void) +{ + return &(devs.list); +} + +struct stdio_dev* stdio_get_by_name(char* name) +{ + struct list_head *pos; + struct stdio_dev *dev; + + if(!name) + return NULL; + + list_for_each(pos, &(devs.list)) { + dev = list_entry(pos, struct stdio_dev, list); + if(strcmp(dev->name, name) == 0) + return dev; + } + + return NULL; +} + +struct stdio_dev* stdio_clone(struct stdio_dev *dev) +{ + struct stdio_dev *_dev; + + if(!dev) + return NULL; + + _dev = calloc(1, sizeof(struct stdio_dev)); + + if(!_dev) + return NULL; + + memcpy(_dev, dev, sizeof(struct stdio_dev)); + strncpy(_dev->name, dev->name, 16); + + return _dev; +} + +int stdio_register (struct stdio_dev * dev) +{ + struct stdio_dev *_dev; + + _dev = stdio_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_STDIO_DEREGISTER +int stdio_deregister(char *devname) +{ + int l; + struct list_head *pos; + struct stdio_dev *dev; + char temp_names[3][8]; + + dev = stdio_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, struct stdio_dev, 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_STDIO_DEREGISTER */ + +int stdio_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)); + +#ifdef CONFIG_ARM_DCC_MULTI + drv_arm_dcc_init (); +#endif +#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_stdio_init (); +#endif +#ifdef CONFIG_USB_TTY + drv_usbtty_init (); +#endif +#ifdef CONFIG_NETCONSOLE + drv_nc_init (); +#endif +#ifdef CONFIG_JTAG_CONSOLE + drv_jtag_console_init (); +#endif + + return (0); +} |