random-mirrors/smaeul-u-boot
1
0
Fork 0
mirror of https://github.com/smaeul/u-boot.git synced 2025-11-04 05:50:17 +00:00
Code Issues Packages Projects Releases Wiki Activity
smaeul-u-boot/common/serial.c
Wolfgang Denk 1902692aa0 Merge branch 'master' of git://git.denx.de/u-boot-blackfin 
* 'master' of git://git.denx.de/u-boot-blackfin:
  Blackfin: jtag-console: fix timer usage
  Blackfin: switch to common display_options()
  Blackfin: serial: move early debug strings into .rodata section
  Blackfin: adi boards: also set stderr to nc with helper
  Blackfin: update anomaly lists to latest public info
  Blackfin: serial: convert to bfin_{read,write} helpers
  Blackfin: split out async setup
  Blackfin: adi boards: enable pretty flash progress output
  Blackfin: drop unused dma.h header from start code
  Blackfin: portmux: allow header to be included in assembly files
  Blackfin: cm-bf537e/cm-bf537u/tcm-bf537: enable mmc_spi support
  Blackfin: cm-bf537e/cm-bf537u/tcm-bf537: update network settings
  Blackfin: sync MMR read/write helpers with Linux
  Blackfin: gpio: optimize free path a little
  Blackfin: post: setup default CONFIG_SYS_POST_WORD_ADDR
  Blackfin: uart: fix printf warning
  Blackfin: add init.elf helper code
  Blackfin: dont reset SWRST on newer bf526 parts
  Blackfin: adi boards: enable multi serial support by default
  Blackfin: uart: add multiple serial support
  Blackfin: uart: move debug buffers into local bss
2011-08-02 21:46:53 +02:00

317 lines
6.8 KiB
C
Raw Blame History

/*
* (C) Copyright 2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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 <common.h>
#include <serial.h>
#include <stdio_dev.h>
#include <post.h>
#include <linux/compiler.h>
DECLARE_GLOBAL_DATA_PTR;
static struct serial_device *serial_devices = NULL;
static struct serial_device *serial_current = NULL;
void serial_register(struct serial_device *dev)
{
#ifdef CONFIG_NEEDS_MANUAL_RELOC
dev->init += gd->reloc_off;
dev->setbrg += gd->reloc_off;
dev->getc += gd->reloc_off;
dev->tstc += gd->reloc_off;
dev->putc += gd->reloc_off;
dev->puts += gd->reloc_off;
#endif
dev->next = serial_devices;
serial_devices = dev;
}
void serial_initialize (void)
{
#if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
serial_register (&serial_smc_device);
#endif
#if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
|| defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
serial_register (&serial_scc_device);
#endif
#if defined(CONFIG_SYS_NS16550_SERIAL)
#if defined(CONFIG_SYS_NS16550_COM1)
serial_register(&eserial1_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM2)
serial_register(&eserial2_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM3)
serial_register(&eserial3_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM4)
serial_register(&eserial4_device);
#endif
#endif /* CONFIG_SYS_NS16550_SERIAL */
#if defined (CONFIG_FFUART)
serial_register(&serial_ffuart_device);
#endif
#if defined (CONFIG_BTUART)
serial_register(&serial_btuart_device);
#endif
#if defined (CONFIG_STUART)
serial_register(&serial_stuart_device);
#endif
#if defined(CONFIG_S3C2410)
serial_register(&s3c24xx_serial0_device);
serial_register(&s3c24xx_serial1_device);
serial_register(&s3c24xx_serial2_device);
#endif
#if defined(CONFIG_S5P)
serial_register(&s5p_serial0_device);
serial_register(&s5p_serial1_device);
serial_register(&s5p_serial2_device);
serial_register(&s5p_serial3_device);
#endif
#if defined(CONFIG_MPC512X)
#if defined(CONFIG_SYS_PSC1)
serial_register(&serial1_device);
#endif
#if defined(CONFIG_SYS_PSC3)
serial_register(&serial3_device);
#endif
#if defined(CONFIG_SYS_PSC4)
serial_register(&serial4_device);
#endif
#if defined(CONFIG_SYS_PSC6)
serial_register(&serial6_device);
#endif
#endif
#if defined(CONFIG_SYS_BFIN_UART)
serial_register_bfin_uart();
#endif
serial_assign (default_serial_console ()->name);
}
void serial_stdio_init (void)
{
struct stdio_dev dev;
struct serial_device *s = serial_devices;
while (s) {
memset (&dev, 0, sizeof (dev));
strcpy (dev.name, s->name);
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
dev.start = s->init;
dev.stop = s->uninit;
dev.putc = s->putc;
dev.puts = s->puts;
dev.getc = s->getc;
dev.tstc = s->tstc;
stdio_register (&dev);
s = s->next;
}
}
int serial_assign (char *name)
{
struct serial_device *s;
for (s = serial_devices; s; s = s->next) {
if (strcmp (s->name, name) == 0) {
serial_current = s;
return 0;
}
}
return 1;
}
void serial_reinit_all (void)
{
struct serial_device *s;
for (s = serial_devices; s; s = s->next) {
s->init ();
}
}
int serial_init (void)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
return dev->init ();
}
return serial_current->init ();
}
void serial_setbrg (void)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
dev->setbrg ();
return;
}
serial_current->setbrg ();
}
int serial_getc (void)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
return dev->getc ();
}
return serial_current->getc ();
}
int serial_tstc (void)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
return dev->tstc ();
}
return serial_current->tstc ();
}
void serial_putc (const char c)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
dev->putc (c);
return;
}
serial_current->putc (c);
}
void serial_puts (const char *s)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
dev->puts (s);
return;
}
serial_current->puts (s);
}
#if CONFIG_POST & CONFIG_SYS_POST_UART
static const int bauds[] = CONFIG_SYS_BAUDRATE_TABLE;
/* Mark weak until post/cpu/.../uart.c migrate over */
__weak
int uart_post_test(int flags)
{
unsigned char c;
int ret, saved_baud, b;
struct serial_device *saved_dev, *s;
bd_t *bd = gd->bd;
/* Save current serial state */
ret = 0;
saved_dev = serial_current;
saved_baud = bd->bi_baudrate;
for (s = serial_devices; s; s = s->next) {
/* If this driver doesn't support loop back, skip it */
if (!s->loop)
continue;
/* Test the next device */
serial_current = s;
ret = serial_init();
if (ret)
goto done;
/* Consume anything that happens to be queued */
while (serial_tstc())
serial_getc();
/* Enable loop back */
s->loop(1);
/* Test every available baud rate */
for (b = 0; b < ARRAY_SIZE(bauds); ++b) {
bd->bi_baudrate = bauds[b];
serial_setbrg();
/*
* Stick to printable chars to avoid issues:
* - terminal corruption
* - serial program reacting to sequences and sending
* back random extra data
* - most serial drivers add in extra chars (like \r\n)
*/
for (c = 0x20; c < 0x7f; ++c) {
/* Send it out */
serial_putc(c);
/* Make sure it's the same one */
ret = (c != serial_getc());
if (ret) {
s->loop(0);
goto done;
}
/* Clean up the output in case it was sent */
serial_putc('\b');
ret = ('\b' != serial_getc());
if (ret) {
s->loop(0);
goto done;
}
}
}
/* Disable loop back */
s->loop(0);
/* XXX: There is no serial_uninit() !? */
if (s->uninit)
s->uninit();
}
done:
/* Restore previous serial state */
serial_current = saved_dev;
bd->bi_baudrate = saved_baud;
serial_reinit_all();
serial_setbrg();
return ret;
}
#endif
Reference in New Issue View Git Blame Copy Permalink