/* * Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net> * * Changes for multibus/multiadapter I2C support. * * (C) Copyright 2000 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it * * SPDX-License-Identifier: GPL-2.0+ */ #include <config.h> #include <common.h> #include <errno.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_SYS_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_STDIO_DEREGISTER #define CONFIG_SYS_DEVICE_NULLDEV 1 #endif #ifdef CONFIG_SYS_DEVICE_NULLDEV void nulldev_putc(struct stdio_dev *dev, const char c) { /* nulldev is empty! */ } void nulldev_puts(struct stdio_dev *dev, const char *s) { /* nulldev is empty! */ } int nulldev_input(struct stdio_dev *dev) { /* nulldev is empty! */ return 0; } #endif void stdio_serial_putc(struct stdio_dev *dev, const char c) { serial_putc(c); } void stdio_serial_puts(struct stdio_dev *dev, const char *s) { serial_puts(s); } int stdio_serial_getc(struct stdio_dev *dev) { return serial_getc(); } int stdio_serial_tstc(struct stdio_dev *dev) { return serial_tstc(); } /************************************************************************** * 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; dev.putc = stdio_serial_putc; dev.puts = stdio_serial_puts; dev.getc = stdio_serial_getc; dev.tstc = stdio_serial_tstc; 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(const 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)); return _dev; } int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp) { struct stdio_dev *_dev; _dev = stdio_clone(dev); if(!_dev) return -ENODEV; list_add_tail(&(_dev->list), &(devs.list)); if (devp) *devp = _dev; return 0; } int stdio_register(struct stdio_dev *dev) { return stdio_register_dev(dev, NULL); } /* 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_dev(struct stdio_dev *dev, int force) { int l; struct list_head *pos; char temp_names[3][16]; /* get stdio devices (ListRemoveItem changes the dev list) */ for (l=0 ; l< MAX_FILES; l++) { if (stdio_devices[l] == dev) { if (force) { strcpy(temp_names[l], "nulldev"); continue; } /* Device is assigned -> report error */ return -1; } memcpy (&temp_names[l][0], stdio_devices[l]->name, sizeof(temp_names[l])); } 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; } int stdio_deregister(const char *devname, int force) { struct stdio_dev *dev; dev = stdio_get_by_name(devname); if (!dev) /* device not found */ return -ENODEV; return stdio_deregister_dev(dev, force); } #endif /* CONFIG_SYS_STDIO_DEREGISTER */ int stdio_init_tables(void) { #if defined(CONFIG_NEEDS_MANUAL_RELOC) /* 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 /* CONFIG_NEEDS_MANUAL_RELOC */ /* Initialize the list */ INIT_LIST_HEAD(&(devs.list)); return 0; } int stdio_add_devices(void) { #ifdef CONFIG_SYS_I2C i2c_init_all(); #else #if defined(CONFIG_HARD_I2C) i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); #endif #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 (); serial_stdio_init (); #ifdef CONFIG_USB_TTY drv_usbtty_init (); #endif #ifdef CONFIG_NETCONSOLE drv_nc_init (); #endif #ifdef CONFIG_JTAG_CONSOLE drv_jtag_console_init (); #endif #ifdef CONFIG_CBMEM_CONSOLE cbmemc_init(); #endif return 0; } int stdio_init(void) { stdio_init_tables(); stdio_add_devices(); return 0; }