| /* |
| * 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 <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_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 (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(const char *devname) |
| { |
| int l; |
| struct list_head *pos; |
| struct stdio_dev *dev; |
| char temp_names[3][16]; |
| |
| 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(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; |
| } |
| #endif /* CONFIG_SYS_STDIO_DEREGISTER */ |
| |
| int stdio_init (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)); |
| |
| #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); |
| } |