Preparing to test on the C5471
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@7 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
61798aebb7
commit
8ed76ffa96
@ -98,12 +98,20 @@ CONFIG_ARCH_KMALLOC=n
|
||||
CONFIG_ARCH_KZMALLOC=n
|
||||
CONFIG_ARCH_KFREE=n
|
||||
|
||||
#
|
||||
# General Compile environment setup
|
||||
#
|
||||
# CONFIG_HAVE_LONG_LONG - enable if your architecture supports
|
||||
# long long types and if you plan to use them
|
||||
CONFIG_HAVE_LONG_LONG=n
|
||||
|
||||
#
|
||||
# General build options
|
||||
#
|
||||
# CONFIG_RRLOAD_BINY - make the rrload binary format used with
|
||||
# BSPs from www.ridgerun.com
|
||||
CONFIG_RRLOAD_BINARY=y
|
||||
|
||||
#
|
||||
# Sizes of configurable things (0 disables)
|
||||
#
|
||||
|
||||
@ -38,7 +38,8 @@
|
||||
MKDEP = $(TOPDIR)/tools/mkdeps.sh
|
||||
CFLAGS += -I$(TOPDIR)/sched
|
||||
|
||||
ASRCS = up_vectors.S up_saveusercontext.S up_fullcontextrestore.S
|
||||
ASRCS = up_vectors.S up_saveusercontext.S up_fullcontextrestore.S \
|
||||
up_lowputc.S
|
||||
AOBJS = $(ASRCS:.S=.o)
|
||||
|
||||
CSRCS = up_initialize.c up_initialstate.c up_idle.c \
|
||||
|
||||
127
arch/c5471/src/up_lowputc.S
Normal file
127
arch/c5471/src/up_lowputc.S
Normal file
@ -0,0 +1,127 @@
|
||||
/**************************************************************************
|
||||
* up_lowputc.S
|
||||
*
|
||||
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
**************************************************************************/
|
||||
|
||||
/**************************************************************************
|
||||
* Included Files
|
||||
**************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include "up_internal.h"
|
||||
#include "c5471.h"
|
||||
|
||||
/**************************************************************************
|
||||
* Private Definitions
|
||||
**************************************************************************/
|
||||
|
||||
/**************************************************************************
|
||||
* Private Types
|
||||
**************************************************************************/
|
||||
|
||||
/**************************************************************************
|
||||
* Private Function Prototypes
|
||||
**************************************************************************/
|
||||
|
||||
/**************************************************************************
|
||||
* Global Variables
|
||||
**************************************************************************/
|
||||
|
||||
/**************************************************************************
|
||||
* Private Variables
|
||||
**************************************************************************/
|
||||
|
||||
/**************************************************************************
|
||||
* Private Functions
|
||||
**************************************************************************/
|
||||
|
||||
/**************************************************************************
|
||||
* Public Functions
|
||||
**************************************************************************/
|
||||
|
||||
/**************************************************************************
|
||||
* Name: up_lowputc
|
||||
**************************************************************************/
|
||||
|
||||
/* This assembly language version has the advantage that it can does not
|
||||
* require a C stack and uses only r0-r1. Hence it can be used during
|
||||
* early boot phases.
|
||||
*/
|
||||
|
||||
.text
|
||||
.global up_putc
|
||||
.type up_lowputc, function
|
||||
up_lowputc:
|
||||
/* On entry, r0 holds the character to be printed */
|
||||
|
||||
#ifdef CONFIG_SERIAL_IRDA_CONSOLE
|
||||
ldr r2, =UART_IRDA_BASE /* r2=IRDA UART base */
|
||||
#else
|
||||
ldr r2, =UART_MODEM_BASE /* r2=Modem UART base */
|
||||
#endif
|
||||
|
||||
/* Poll bit 0 of the UART_SSR register. When the bit
|
||||
* is clear, the TX FIFO is no longer full
|
||||
*/
|
||||
|
||||
1: ldr r1, [r2, #UART_SSR_OFFS]
|
||||
tst r1, #UART_SSR_TXFULL
|
||||
bne 1b
|
||||
|
||||
/* Send the character by writing it into the UART_THR
|
||||
* register.
|
||||
*/
|
||||
|
||||
str r0, [r2, #UART_THR_OFFS]
|
||||
|
||||
/* Wait for the tranmsit holding regiser (THR) to be
|
||||
* emptied. This is detemined when bit 6 of the LSR
|
||||
* is set.
|
||||
*/
|
||||
|
||||
2: ldr r1, [r2, #UART_LSR_OFFS]
|
||||
tst r1, #0x00000020
|
||||
beq 2b
|
||||
|
||||
/* If the character that we just sent was a linefeed,
|
||||
* then send a carriage return as well.
|
||||
*/
|
||||
|
||||
teq r0, #'\n'
|
||||
moveq r0, #'\r'
|
||||
beq 1b
|
||||
|
||||
/* And return */
|
||||
|
||||
mov pc, lr
|
||||
|
||||
@ -96,12 +96,20 @@ CONFIG_ARCH_KMALLOC=n
|
||||
CONFIG_ARCH_KZMALLOC=n
|
||||
CONFIG_ARCH_KFREE=n
|
||||
|
||||
#
|
||||
# General Compile environment setup
|
||||
#
|
||||
# CONFIG_HAVE_LONG_LONG - enable if your architecture supports
|
||||
# long long types and if you plan to use them
|
||||
CONFIG_HAVE_LONG_LONG=n
|
||||
|
||||
#
|
||||
# General build options
|
||||
#
|
||||
# CONFIG_RRLOAD_BINY - make the rrload binary format used with
|
||||
# BSPs from www.ridgerun.com
|
||||
CONFIG_RRLOAD_BINARY=n
|
||||
|
||||
#
|
||||
# Sizes of configurable things (0 disables)
|
||||
#
|
||||
|
||||
Loading…
Reference in New Issue
Block a user