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体验新版 GitCode,发现更多精彩内容 >>
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edc48b66
编写于
9月 08, 2002
作者:
W
wdenk
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差异文件
Initial revision
上级
20e0e233
变更
2
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并排
Showing
2 changed file
with
155 addition
and
0 deletion
+155
-0
cpu/arm720t/serial.c
cpu/arm720t/serial.c
+126
-0
lib_arm/cache.c
lib_arm/cache.c
+29
-0
未找到文件。
cpu/arm720t/serial.c
0 → 100644
浏览文件 @
edc48b66
/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
*
* 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 <clps7111.h>
void
serial_setbrg
(
void
)
{
DECLARE_GLOBAL_DATA_PTR
;
unsigned
int
reg
=
0
;
if
(
gd
->
baudrate
==
1200
)
reg
=
191
;
else
if
(
gd
->
baudrate
==
9600
)
reg
=
23
;
else
if
(
gd
->
baudrate
==
19200
)
reg
=
11
;
else
if
(
gd
->
baudrate
==
38400
)
reg
=
5
;
else
if
(
gd
->
baudrate
==
57600
)
reg
=
3
;
else
if
(
gd
->
baudrate
==
115200
)
reg
=
1
;
else
hang
();
/* init serial serial 1,2 */
IO_SYSCON1
=
SYSCON1_UART1EN
;
IO_SYSCON2
=
SYSCON2_UART2EN
;
reg
|=
UBRLCR_WRDLEN8
;
IO_UBRLCR1
=
reg
;
IO_UBRLCR2
=
reg
;
}
/*
* Initialise the serial port with the given baudrate. The settings
* are always 8 data bits, no parity, 1 stop bit, no start bits.
*
*/
int
serial_init
(
void
)
{
serial_setbrg
();
return
(
0
);
}
/*
* Output a single byte to the serial port.
*/
void
serial_putc
(
const
char
c
)
{
int
tmo
;
/* If \n, also do \r */
if
(
c
==
'\n'
)
serial_putc
(
'\r'
);
tmo
=
get_timer
(
0
)
+
1
*
CFG_HZ
;
while
(
IO_SYSFLG1
&
SYSFLG1_UTXFF
)
if
(
get_timer
(
0
)
>
tmo
)
break
;
IO_UARTDR1
=
c
;
}
/*
* Read a single byte from the serial port. Returns 1 on success, 0
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
int
serial_tstc
(
void
)
{
return
!
(
IO_SYSFLG1
&
SYSFLG1_URXFE
);
}
/*
* Read a single byte from the serial port. Returns 1 on success, 0
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
int
serial_getc
(
void
)
{
while
(
IO_SYSFLG1
&
SYSFLG1_URXFE
);
return
IO_UARTDR1
&
0xff
;
}
void
serial_puts
(
const
char
*
s
)
{
while
(
*
s
)
{
serial_putc
(
*
s
++
);
}
}
lib_arm/cache.c
0 → 100644
浏览文件 @
edc48b66
/*
* (C) Copyright 2002
* 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
*/
/* for now: just dummy functions to satisfy the linker */
void
flush_cache
(
unsigned
long
dummy1
,
unsigned
long
dummy2
)
{
return
;
}
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