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https://github.com/brain-hackers/u-boot-brain
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![Peter Tyser](/assets/img/avatar_default.png)
These architectures don't need relocation fixups, so reduce their codesize a bit by defining CONFIG_RELOC_FIXUP_WORKS. Also remove the reloc_off field from their global data structures as it is no longer needed. Note that the location of the standalone application jump table pointer in the global data structure is affected by this change, breaking execution of standalone applications compiled for previous versions of U-Boot. We will therefore increment XF_VERSION in the next commit, which also touches this area. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Wolfgang Denk <wd@denx.de>
253 lines
5.6 KiB
C
253 lines
5.6 KiB
C
/*
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* (C) Copyright 2000
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* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <config.h>
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#include <common.h>
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#include <stdarg.h>
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#include <malloc.h>
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#include <stdio_dev.h>
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#include <serial.h>
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#ifdef CONFIG_LOGBUFFER
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#include <logbuff.h>
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#endif
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#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
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#include <i2c.h>
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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static struct stdio_dev devs;
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struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
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char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
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#if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV)
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#define CONFIG_SYS_DEVICE_NULLDEV 1
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#endif
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#ifdef CONFIG_SYS_DEVICE_NULLDEV
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void nulldev_putc(const char c)
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{
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/* nulldev is empty! */
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}
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void nulldev_puts(const char *s)
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{
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/* nulldev is empty! */
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}
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int nulldev_input(void)
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{
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/* nulldev is empty! */
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return 0;
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}
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#endif
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/**************************************************************************
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* SYSTEM DRIVERS
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**************************************************************************
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*/
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static void drv_system_init (void)
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{
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struct stdio_dev dev;
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memset (&dev, 0, sizeof (dev));
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strcpy (dev.name, "serial");
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dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
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#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
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dev.putc = serial_buffered_putc;
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dev.puts = serial_buffered_puts;
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dev.getc = serial_buffered_getc;
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dev.tstc = serial_buffered_tstc;
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#else
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dev.putc = serial_putc;
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dev.puts = serial_puts;
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dev.getc = serial_getc;
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dev.tstc = serial_tstc;
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#endif
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stdio_register (&dev);
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#ifdef CONFIG_SYS_DEVICE_NULLDEV
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memset (&dev, 0, sizeof (dev));
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strcpy (dev.name, "nulldev");
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dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
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dev.putc = nulldev_putc;
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dev.puts = nulldev_puts;
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dev.getc = nulldev_input;
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dev.tstc = nulldev_input;
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stdio_register (&dev);
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#endif
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}
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/**************************************************************************
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* DEVICES
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**************************************************************************
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*/
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struct list_head* stdio_get_list(void)
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{
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return &(devs.list);
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}
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struct stdio_dev* stdio_get_by_name(char* name)
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{
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struct list_head *pos;
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struct stdio_dev *dev;
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if(!name)
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return NULL;
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list_for_each(pos, &(devs.list)) {
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dev = list_entry(pos, struct stdio_dev, list);
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if(strcmp(dev->name, name) == 0)
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return dev;
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}
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return NULL;
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}
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struct stdio_dev* stdio_clone(struct stdio_dev *dev)
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{
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struct stdio_dev *_dev;
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if(!dev)
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return NULL;
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_dev = calloc(1, sizeof(struct stdio_dev));
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if(!_dev)
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return NULL;
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memcpy(_dev, dev, sizeof(struct stdio_dev));
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strncpy(_dev->name, dev->name, 16);
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return _dev;
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}
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int stdio_register (struct stdio_dev * dev)
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{
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struct stdio_dev *_dev;
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_dev = stdio_clone(dev);
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if(!_dev)
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return -1;
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list_add_tail(&(_dev->list), &(devs.list));
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return 0;
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}
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/* deregister the device "devname".
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* returns 0 if success, -1 if device is assigned and 1 if devname not found
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*/
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#ifdef CONFIG_SYS_STDIO_DEREGISTER
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int stdio_deregister(char *devname)
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{
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int l;
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struct list_head *pos;
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struct stdio_dev *dev;
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char temp_names[3][8];
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dev = stdio_get_by_name(devname);
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if(!dev) /* device not found */
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return -1;
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/* get stdio devices (ListRemoveItem changes the dev list) */
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for (l=0 ; l< MAX_FILES; l++) {
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if (stdio_devices[l] == dev) {
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/* Device is assigned -> report error */
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return -1;
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}
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memcpy (&temp_names[l][0],
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stdio_devices[l]->name,
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sizeof(stdio_devices[l]->name));
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}
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list_del(&(dev->list));
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/* reassign Device list */
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list_for_each(pos, &(devs.list)) {
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dev = list_entry(pos, struct stdio_dev, list);
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for (l=0 ; l< MAX_FILES; l++) {
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if(strcmp(dev->name, temp_names[l]) == 0)
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stdio_devices[l] = dev;
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}
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}
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return 0;
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}
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#endif /* CONFIG_SYS_STDIO_DEREGISTER */
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int stdio_init (void)
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{
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#if !defined(CONFIG_RELOC_FIXUP_WORKS)
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/* already relocated for current ARM implementation */
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ulong relocation_offset = gd->reloc_off;
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int i;
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/* relocate device name pointers */
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for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
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stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
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relocation_offset);
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}
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#endif /* !CONFIG_RELOC_FIXUP_WORKS */
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/* Initialize the list */
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INIT_LIST_HEAD(&(devs.list));
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#ifdef CONFIG_ARM_DCC_MULTI
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drv_arm_dcc_init ();
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#endif
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#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
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i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
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#endif
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#ifdef CONFIG_LCD
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drv_lcd_init ();
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#endif
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#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
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drv_video_init ();
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#endif
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#ifdef CONFIG_KEYBOARD
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drv_keyboard_init ();
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#endif
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#ifdef CONFIG_LOGBUFFER
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drv_logbuff_init ();
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#endif
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drv_system_init ();
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#ifdef CONFIG_SERIAL_MULTI
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serial_stdio_init ();
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#endif
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#ifdef CONFIG_USB_TTY
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drv_usbtty_init ();
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#endif
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#ifdef CONFIG_NETCONSOLE
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drv_nc_init ();
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#endif
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#ifdef CONFIG_JTAG_CONSOLE
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drv_jtag_console_init ();
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#endif
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return (0);
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}
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