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Add QEMU NSH configuration

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@3358 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo 2011-03-10 04:13:44 +00:00
parent c374856154
commit 583fe718e2
14 changed files with 1090 additions and 172 deletions

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@ -1532,3 +1532,6 @@
(and others). Contributed by Uros Platise.
* examples/nsh and tools/mkromfsimg.sh -- Add support for platform-specific
ROMFS-based NSH start-up scripts.
* drivers/uart_16550.c and include/nuttx/uart_16550.h - Support for a generic
16550 UART.
* configure/qemu-i486/nsh - QEMU NSH example.

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@ -8,7 +8,7 @@
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
<p>Last Updated: March 7, 2011</p>
<p>Last Updated: March 9, 2011</p>
</td>
</tr>
</table>
@ -2156,6 +2156,9 @@ nuttx-5.19 2011-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
(and others). Contributed by Uros Platise.
* examples/nsh and tools/mkromfsimg.sh -- Add support for platform-specific
ROMFS-based NSH start-up scripts.
* drivers/uart_16550.c and include/nuttx/uart_16550.h - Support for a generic
16550 UART.
* configure/qemu-i486/nsh - QEMU NSH example.
pascal-2.1 2011-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;

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@ -127,6 +127,12 @@ void up_lowsetup(void)
up_gdtinit();
/* Early serial driver initialization */
#ifdef CONFIG_USE_EARLYSERIALINIT
up_earlyserialinit();
#endif
/* Now perform board-specific initializations */
up_boardinitialize();

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@ -40,10 +40,18 @@
#include <nuttx/config.h>
#include <nuttx/arch.h>
#include <nuttx/uart_16550.h>
#include <arch/io.h>
#include "up_internal.h"
/* This is a "stub" file to suppport up_putc if no real serial driver is
* configured. Normally, drivers/serial/uart_16550.c provides the serial
* driver for this platform.
*/
#ifdef CONFIG_USE_SERIALDRIVER
#error "Serial driver support not initialized"
/****************************************************************************
* Pre-processor Definitions
@ -61,6 +69,25 @@
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: uart_getreg(), uart_putreg()
*
* Description:
* These functions must be provided by the processor-specific code in order
* to correctly access 16550 registers
*
****************************************************************************/
uart_datawidth_t uart_getreg(uart_addrwidth_t base, unsigned int offset)
{
return inb(base + offset);
}
void uart_putreg(uart_addrwidth_t base, unsigned int offset, uart_datawidth_t value)
{
outb(value, base + offset);
}
#else /* CONFIG_USE_SERIALDRIVER */
/****************************************************************************

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@ -0,0 +1,126 @@
############################################################################
# configs/qemu-i486/nsh/Make.defs
#
# Copyright (C) 2011 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 NuttX 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.
#
############################################################################
include ${TOPDIR}/.config
HOSTOS = ${shell uname -o 2>/dev/null || echo "Other"}
ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
ARCHOPTIMIZATION = -g
else
ARCHOPTIMIZATION = -O2
endif
ifeq ($(WINTOOL),y)
# Windows-native toolchains
DIRLINK = $(TOPDIR)/tools/winlink.sh
DIRUNLINK = $(TOPDIR)/tools/unlink.sh
MKDEP = $(TOPDIR)/tools/mknulldeps.sh
ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh/ld.script}"
MAXOPTIMIZATION = -O2
else
# Linux/Cygwin-native toolchain
MKDEP = $(TOPDIR)/tools/mkdeps.sh
ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh/ld.script
endif
ARCHCPUFLAGS = -march=i486 -mtune=i486 -fno-builtin
ARCHPICFLAGS = -fpic
ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
ARCHDEFINES =
# We have to use a cross-development toolchain under Cygwin because the native
# Cygwin toolchains don't generate ELF binaries.
ifeq ($(HOSTOS),Cygwin)
CROSSDEV = i486-elf-
else
CROSSDEV =
endif
CC = $(CROSSDEV)gcc
CPP = $(CROSSDEV)gcc -E
LD = $(CROSSDEV)ld
AR = $(CROSSDEV)ar rcs
NM = $(CROSSDEV)nm
OBJCOPY = $(CROSSDEV)objcopy
OBJDUMP = $(CROSSDEV)objdump
CFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES)
AFLAGS = $(CFLAGS) -D__ASSEMBLY__
OBJEXT = .o
LIBEXT = .a
EXEEXT = .elf
ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
LDFLAGS += -g
endif
define PREPROCESS
@echo "CPP: $1->$2"
@$(CPP) $(CPPFLAGS) $1 -o $2
endef
define COMPILE
@echo "CC: $1"
@$(CC) -c $(CFLAGS) $1 -o $2
endef
define ASSEMBLE
@echo "AS: $1"
@$(CC) -c $(AFLAGS) $1 -o $2
endef
define ARCHIVE
echo "AR: $2"; \
$(AR) $1 $2 || { echo "$(AR) $1 $2 FAILED!" ; exit 1 ; }
endef
define CLEAN
@rm -f *.o *.a
endef
MKDEP = $(TOPDIR)/tools/mkdeps.sh
HOSTCC = gcc
HOSTINCLUDESv = -I.
HOSTCFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(HOSTINCLUDES) $(ARCHDEFINES) -pipe
HOSTLDFLAGS =

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@ -0,0 +1,541 @@
############################################################################
# configs/qemu-i486/nsh/defconfig
#
# Copyright (C) 2011 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 NuttX 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.
#
############################################################################
#
# Architecture selection
#
# CONFIG_ARCH - identifies the arch subdirectory and, hence, the
# processor architecture.
# CONFIG_ARCH_architecture - for use in C code. This identifies the
# specific architecture within the chip familyl.
# CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
# CONFIG_ARCH_CHIP_name - For use in C code
# CONFIG_ARCH_BOARD - identifies the configs subdirectory and, hence,
# the board that supports the particular chip or SoC.
# CONFIG_ARCH_BOARD_name - for use in C code
# CONFIG_ENDIAN_BIG - define if big endian (default is little endian)
# CONFIG_BOARD_LOOPSPERMSEC - for delay loops
# CONFIG_DRAM_SIZE - Describes the installed DRAM.
# CONFIG_DRAM_START - The start address of DRAM (physical)
# CONFIG_DRAM_END - Last address+1 of installed RAM
# CONFIG_ARCH_NOINTC - define if the architecture does not
# support an interrupt controller or otherwise cannot support
# APIs like up_enable_irq() and up_disable_irq().
# CONFIG_ARCH_IRQPRIO - Set if the architecture supports interrupt prioritization
# CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
# stack. If defined, this symbol is the size of the interrupt
# stack in bytes. If not defined, the user task stacks will be
# used during interrupt handling.
# CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
# CONFIG_ARCH_BOOTLOADER - Set if you are using a bootloader.
# CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to board architecture.
# CONFIG_ARCH_BUTTONS - Enable support for buttons. Unique to board architecture.
# CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that
# cause a 100 second delay during boot-up. This 100 second delay
# serves no purpose other than it allows you to calibrate
# CONFIG_BOARD_LOOPSPERMSEC. You simply use a stop watch to measure
# the 100 second delay then adjust CONFIG_BOARD_LOOPSPERMSEC until
# the delay actually is 100 seconds.
# CONFIG_ARCH_DMA - Support DMA initialization
#
CONFIG_ARCH=x86
CONFIG_ARCH_X86=y
CONFIG_ARCH_I486=y
CONFIG_ARCH_CHIP=qemu
CONFIG_ARCH_CHIP_QEMU=y
CONFIG_ARCH_BOARD=qemu-i486
CONFIG_ARCH_BOARD_QEMU_I486=y
CONFIG_BOARD_LOOPSPERMSEC=999
CONFIG_DRAM_SIZE=0x00100000
CONFIG_DRAM_START=0x00100000
CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
CONFIG_ARCH_NOINTC=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_ARCH_LEDS=n
CONFIG_ARCH_BUTTONS=n
CONFIG_ARCH_CALIBRATION=n
CONFIG_ARCH_DMA=n
#
# 16550 UART Settings
#
# CONFIG_16550_UART - Enable 16550 UART support
# CONFIG_16550_REGINCR - Address increment between registers (1, 2, or 4)
# CONFIG_16550_REGWIDTH - Width of a register in bits (8, 16, or 32)
# CONFIG_16550_ADDRWIDTH - Width of register address in bytes (8, 16, or 32)
# CONFIG_16550_UARTn - 'y' to enable UARTn
# CONFIG_16550_UARTn_BASE - Base address for UARTn
# CONFIG_16550_UARTn_CLOCK - Input clock for UARTn
# CONFIG_16550_UARTn_IRQ - IRQ for UARTn
#
CONFIG_16550_UART=y
CONFIG_16550_REGINCR=1
CONFIG_16550_REGWIDTH=8
CONFIG_16550_ADDRWIDTH=16
CONFIG_16550_SUPRESS_CONFIG=y
CONFIG_SUPPRESS_SERIAL_INTS=n
CONFIG_16550_UART0=y
CONFIG_16550_UART0_BASE=0x3f8
CONFIG_16550_UART0_CLOCK=16000000
CONFIG_16550_UART0_IRQ=IRQ4
CONFIG_16550_UART1=n
CONFIG_16550_UART1_BASE=0x2f8
CONFIG_16550_UART1_CLOCK=16000000
CONFIG_16550_UART1_IRQ=IRQ3
CONFIG_16550_UART2=n
CONFIG_16550_UART2_BASE=0x3e8
CONFIG_16550_UART2_CLOCK=16000000
CONFIG_16550_UART2_IRQ=IRQ4
CONFIG_16550_UART3=n
CONFIG_16550_UART3_BASE=0x2e8
CONFIG_16550_UART3_CLOCK=16000000
CONFIG_16550_UART3_IRQ=IRQ3
#
# Serial device driver settings
#
# CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the
# console and ttys0 (default is the UART1).
# CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
# This specific the size of the receive buffer
# CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
# being sent. This specific the size of the transmit buffer
# CONFIG_UARTn_BAUD - The configure BAUD of the UART. Must be
# CONFIG_UARTn_BITS - The number of bits. Must be either 7 or 8.
# CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
# CONFIG_UARTn_2STOP - Two stop bits
#
CONFIG_UART0_SERIAL_CONSOLE=y
CONFIG_UART1_SERIAL_CONSOLE=n
CONFIG_UART2_SERIAL_CONSOLE=n
CONFIG_UART3_SERIAL_CONSOLE=n
CONFIG_UART0_TXBUFSIZE=256
CONFIG_UART1_TXBUFSIZE=256
CONFIG_UART2_TXBUFSIZE=256
CONFIG_UART3_TXBUFSIZE=256
CONFIG_UART0_RXBUFSIZE=256
CONFIG_UART1_RXBUFSIZE=256
CONFIG_UART2_RXBUFSIZE=256
CONFIG_UART3_RXBUFSIZE=256
CONFIG_UART0_BAUD=57600
CONFIG_UART2_BAUD=57600
CONFIG_UART3_BAUD=57600
CONFIG_UART1_BAUD=57600
CONFIG_UART0_BITS=8
CONFIG_UART1_BITS=8
CONFIG_UART2_BITS=8
CONFIG_UART3_BITS=8
CONFIG_UART0_PARITY=0
CONFIG_UART1_PARITY=0
CONFIG_UART2_PARITY=0
CONFIG_UART3_PARITY=0
CONFIG_UART0_2STOP=0
CONFIG_UART1_2STOP=0
CONFIG_UART2_2STOP=0
CONFIG_UART3_2STOP=0
#
# General OS setup
#
# CONFIG_APP_DIR - Identifies the relative path to the directory that builds
# the application to link with NuttX.
# CONFIG_DEBUG - enables built-in debug options
# CONFIG_DEBUG_VERBOSE - enables verbose debug output
# CONFIG_DEBUG_SYMBOLS - build without optimization and with debug symbols
# (needed for use with a debugger).
# CONFIG_MM_REGIONS - If the architecture includes multiple regions of memory
# to allocate from, this specifies the number of memory regions that the
# memory manager must handle and enables the API mm_addregion(start, end);
# CONFIG_ARCH_LOWPUTC - architecture supports low-level, boot time console
# output.
# CONFIG_TICKS_PER_MSEC - The default system timer is 100Hz or TICKS_PER_MSEC=10.
# This setting may be defined to inform NuttX that the processor hardware is
# providing system timer interrupts at some interrupt interval other than 10
# msec.
# CONFIG_RR_INTERVAL - The round robin timeslice will be set this number of
# milliseconds; Round robin scheduling can be disabled by setting this
# value to zero.
# CONFIG_SCHED_INSTRUMENTATION - enables instrumentation in scheduler to
# monitor system performance
# CONFIG_TASK_NAME_SIZE - Spcifies that maximum size of a task name to save in
# the TCB. Useful if scheduler instrumentation is selected. Set to zero to
# disable.
# CONFIG_JULIAN_TIME - Enables Julian time conversions
# CONFIG_START_YEAR, CONFIG_START_MONTH, CONFIG_START_DAY - Used to initialize
# the internal time logic.
# CONFIG_DEV_CONSOLE - Set if architecture-specific logic provides /dev/console.
# Enables stdout, stderr, stdin.
# CONFIG_DEV_LOWCONSOLE - Use the simple, low-level serial console driver
# (minimal support)
# CONFIG_MUTEX_TYPES: Set to enable support for recursive and errorcheck
# mutexes. Enables pthread_mutexattr_settype().
# CONFIG_PRIORITY_INHERITANCE : Set to enable support for priority inheritance
# on mutexes and semaphores.
# CONFIG_SEM_PREALLOCHOLDERS: This setting is only used if priority inheritance
# is enabled. It defines the maximum number of different threads (minus one)
# that can take counts on a semaphore with priority inheritance support.
# This may be set to zero if priority inheritance is disabled OR if you are
# only using semaphores as mutexes (only one holder) OR if no more than two
# threads participate using a counting semaphore.
# CONFIG_SEM_NNESTPRIO. If priority inheritance is enabled, then this setting
# is the maximum number of higher priority threads (minus 1) than can be
# waiting for another thread to release a count on a semaphore. This value
# may be set to zero if no more than one thread is expected to wait for a
# semaphore.
# CONFIG_FDCLONE_DISABLE. Disable cloning of all file descriptors by task_create()
# when a new task is started. If set, all files/drivers will appear to be
# closed in the new task.
# CONFIG_FDCLONE_STDIO. Disable cloning of all but the first three file
# descriptors (stdin, stdout, stderr) by task_create() when a new task is
# started. If set, all files/drivers will appear to be closed in the new
# task except for stdin, stdout, and stderr.
# CONFIG_SDCLONE_DISABLE. Disable cloning of all socket desciptors by
# task_create() when a new task is started. If set, all sockets will appear
# to be closed in the new task.
#
CONFIG_APP_DIR=examples/nsh
CONFIG_DEBUG=n
CONFIG_DEBUG_VERBOSE=n
CONFIG_DEBUG_SYMBOLS=n
CONFIG_MM_REGIONS=1
CONFIG_ARCH_LOWPUTC=y
CONFIG_RR_INTERVAL=0
CONFIG_SCHED_INSTRUMENTATION=n
CONFIG_TASK_NAME_SIZE=32
CONFIG_START_YEAR=2011
CONFIG_START_MONTH=3
CONFIG_START_DAY=3
CONFIG_JULIAN_TIME=n
CONFIG_DEV_CONSOLE=y
CONFIG_DEV_LOWCONSOLE=n
CONFIG_MUTEX_TYPES=y
CONFIG_PRIORITY_INHERITANCE=n
CONFIG_SEM_PREALLOCHOLDERS=0
CONFIG_SEM_NNESTPRIO=0
CONFIG_FDCLONE_DISABLE=n
CONFIG_FDCLONE_STDIO=n
CONFIG_SDCLONE_DISABLE=y
#
# The following can be used to disable categories ofAPIs supported by the OS.
# If the compiler supports weak functions, then it should not be necessary to
# disable functions unless you want to restrict usage of those APIs.
#
# There are certain dependency relationships in these features.
#
# o mq_notify logic depends on signals to awaken tasks waiting for queues to
# become full or empty.
# o pthread_condtimedwait() depends on signals to wake up waiting tasks.
#
CONFIG_DISABLE_CLOCK=n
CONFIG_DISABLE_POSIX_TIMERS=n
CONFIG_DISABLE_PTHREAD=n
CONFIG_DISABLE_SIGNALS=n
CONFIG_DISABLE_MQUEUE=n
CONFIG_DISABLE_MOUNTPOINT=n
CONFIG_DISABLE_ENVIRON=n
CONFIG_DISABLE_POLL=y
#
# Misc libc settings
#
# CONFIG_NOPRINTF_FIELDWIDTH - sprintf-related logic is a little smaller if we
# do not support fieldwidthes
#
CONFIG_NOPRINTF_FIELDWIDTH=n
#
# Allow for architecture optimized implementations
#
# The architecture can provide optimized versions of the following to improve
# system performance
#
CONFIG_ARCH_MEMCPY=n
CONFIG_ARCH_MEMCMP=n
CONFIG_ARCH_MEMMOVE=n
CONFIG_ARCH_MEMSET=n
CONFIG_ARCH_STRCMP=n
CONFIG_ARCH_STRCPY=n
CONFIG_ARCH_STRNCPY=n
CONFIG_ARCH_STRLEN=n
CONFIG_ARCH_STRNLEN=n
CONFIG_ARCH_BZERO=n
CONFIG_ARCH_KMALLOC=n
CONFIG_ARCH_KZMALLOC=n
CONFIG_ARCH_KFREE=n
#
# General build options
#
# CONFIG_RRLOAD_BINARY - make the rrload binary format used with BSPs from
# www.ridgerun.com using the tools/mkimage.sh script
# CONFIG_INTELHEX_BINARY - make the Intel HEX binary format used with many
# different loaders using the GNU objcopy program Should not be selected if
# you are not using the GNU toolchain.
# CONFIG_RAW_BINARY - make a raw binary format file used with many different
# loaders using the GNU objcopy program. This option should not be selected
# if you are not using the GNU toolchain.
# CONFIG_HAVE_LIBM - toolchain supports libm.a
#
CONFIG_RRLOAD_BINARY=n
CONFIG_INTELHEX_BINARY=n
CONFIG_RAW_BINARY=n
CONFIG_HAVE_LIBM=y
#
# Sizes of configurable things (0 disables)
#
# CONFIG_MAX_TASKS - The maximum number of simultaneously active tasks. This
# value must be a power of two.
# CONFIG_MAX_TASK_ARGS - This controls the maximum number of of parameters
# that a task may receive (i.e., maxmum value of 'argc')
# CONFIG_NPTHREAD_KEYS - The number of items of thread-specific data that can
# be retained
# CONFIG_NFILE_DESCRIPTORS - The maximum number of file descriptors (one for
# each open)
# CONFIG_NFILE_STREAMS - The maximum number of streams that can be fopen'ed
# CONFIG_NAME_MAX - The maximum size of a file name.
# CONFIG_STDIO_BUFFER_SIZE - Size of the buffer to allocate on fopen. (Only if
# CONFIG_NFILE_STREAMS > 0)
# CONFIG_NUNGET_CHARS - Number of characters that can be buffered by ungetc()
# (Only if CONFIG_NFILE_STREAMS > 0)
# CONFIG_PREALLOC_MQ_MSGS - The number of pre-allocated message structures.
# The system manages a pool of preallocated message structures to minimize
# dynamic allocations
# CONFIG_MQ_MAXMSGSIZE - Message structures are allocated with a fixed payload
# size given by this settin (does not include other message structure overhead.
# CONFIG_MAX_WDOGPARMS - Maximum number of parameters that can be passed to a
# watchdog handler
# CONFIG_PREALLOC_WDOGS - The number of pre-allocated watchdog structures. The
# system manages a pool of preallocated watchdog structures to minimize
# dynamic allocations
# CONFIG_PREALLOC_TIMERS - The number of pre-allocated POSIX timer structures.
# The system manages a pool of preallocated timer structures to minimize
# dynamic allocations. Set to zero for all dynamic allocations.
#
CONFIG_MAX_TASKS=64
CONFIG_MAX_TASK_ARGS=4
CONFIG_NPTHREAD_KEYS=4
CONFIG_NFILE_DESCRIPTORS=32
CONFIG_NFILE_STREAMS=16
CONFIG_NAME_MAX=32
CONFIG_STDIO_BUFFER_SIZE=1024
CONFIG_NUNGET_CHARS=2
CONFIG_PREALLOC_MQ_MSGS=32
CONFIG_MQ_MAXMSGSIZE=32
CONFIG_MAX_WDOGPARMS=4
CONFIG_PREALLOC_WDOGS=32
CONFIG_PREALLOC_TIMERS=8
#
# FAT filesystem configuration
# CONFIG_FS_FAT - Enable FAT filesystem support
# CONFIG_FAT_SECTORSIZE - Max supported sector size
# CONFIG_FS_ROMFS - Enable ROMFS filesystem support
CONFIG_FS_FAT=y
CONFIG_FS_ROMFS=y
#
# TCP/IP and UDP support via uIP
# CONFIG_NET - Enable or disable all network features
# CONFIG_NET_IPv6 - Build in support for IPv6
# CONFIG_NSOCKET_DESCRIPTORS - Maximum number of socket descriptors per task/thread.
# CONFIG_NET_SOCKOPTS - Enable or disable support for socket options
# CONFIG_NET_BUFSIZE - uIP buffer size
# CONFIG_NET_TCP - TCP support on or off
# CONFIG_NET_TCP_CONNS - Maximum number of TCP connections (all tasks)
# CONFIG_NET_TCP_READAHEAD_BUFSIZE - Size of TCP read-ahead buffers
# CONFIG_NET_NTCP_READAHEAD_BUFFERS - Number of TCP read-ahead buffers (may be zero)
# CONFIG_NET_TCPBACKLOG - Incoming connections pend in a backlog until
# accept() is called. The size of the backlog is selected when listen() is called.
# CONFIG_NET_MAX_LISTENPORTS - Maximum number of listening TCP ports (all tasks)
# CONFIG_NET_UDP - UDP support on or off
# CONFIG_NET_UDP_CHECKSUMS - UDP checksums on or off
# CONFIG_NET_UDP_CONNS - The maximum amount of concurrent UDP connections
# CONFIG_NET_ICMP - ICMP ping response support on or off
# CONFIG_NET_ICMP_PING - ICMP ping request support on or off
# CONFIG_NET_PINGADDRCONF - Use "ping" packet for setting IP address
# CONFIG_NET_STATISTICS - uIP statistics on or off
# CONFIG_NET_RECEIVE_WINDOW - The size of the advertised receiver's window
# CONFIG_NET_ARPTAB_SIZE - The size of the ARP table
# CONFIG_NET_BROADCAST - Broadcast support
# CONFIG_NET_LLH_LEN - The link level header length
# CONFIG_NET_FWCACHE_SIZE - number of packets to remember when looking for duplicates
CONFIG_NET=n
CONFIG_NET_IPv6=n
CONFIG_NSOCKET_DESCRIPTORS=0
CONFIG_NET_SOCKOPTS=y
CONFIG_NET_BUFSIZE=420
CONFIG_NET_TCP=n
CONFIG_NET_TCP_CONNS=40
CONFIG_NET_MAX_LISTENPORTS=40
CONFIG_NET_UDP=n
CONFIG_NET_UDP_CHECKSUMS=y
#CONFIG_NET_UDP_CONNS=10
CONFIG_NET_ICMP=n
CONFIG_NET_ICMP_PING=n
#CONFIG_NET_PINGADDRCONF=0
CONFIG_NET_STATISTICS=y
#CONFIG_NET_RECEIVE_WINDOW=
#CONFIG_NET_ARPTAB_SIZE=8
CONFIG_NET_BROADCAST=n
#CONFIG_NET_LLH_LEN=14
#CONFIG_NET_FWCACHE_SIZE=2
#
# UIP Network Utilities
# CONFIG_NET_DHCP_LIGHT - Reduces size of DHCP
# CONFIG_NET_RESOLV_ENTRIES - Number of resolver entries
CONFIG_NET_DHCP_LIGHT=n
CONFIG_NET_RESOLV_ENTRIES=4
#
# Settings for examples/uip
CONFIG_EXAMPLE_UIP_IPADDR=(192<<24|168<<16|0<<8|128)
CONFIG_EXAMPLE_UIP_DRIPADDR=(192<<24|168<<16|0<<8|1)
CONFIG_EXAMPLE_UIP_NETMASK=(255<<24|255<<16|255<<8|0)
CONFIG_EXAMPLE_UIP_DHCPC=n
#
# Settings for examples/nettest
CONFIG_EXAMPLE_NETTEST_SERVER=n
CONFIG_EXAMPLE_NETTEST_PERFORMANCE=n
CONFIG_EXAMPLE_NETTEST_NOMAC=n
CONFIG_EXAMPLE_NETTEST_IPADDR=(192<<24|168<<16|0<<8|128)
CONFIG_EXAMPLE_NETTEST_DRIPADDR=(192<<24|168<<16|0<<8|1)
CONFIG_EXAMPLE_NETTEST_NETMASK=(255<<24|255<<16|255<<8|0)
CONFIG_EXAMPLE_NETTEST_CLIENTIP=(192<<24|168<<16|0<<8|106)
#
# Settings for examples/ostest
CONFIG_EXAMPLES_OSTEST_LOOPS=100
CONFIG_EXAMPLES_OSTEST_STACKSIZE=4096
#
# Settings for examples/nsh
#
# CONFIG_EXAMPLES_NSH_FILEIOSIZE - Size of a static I/O buffer
# CONFIG_EXAMPLES_NSH_STRERROR - Use strerror(errno)
# CONFIG_EXAMPLES_NSH_LINELEN - Maximum length of one command line
# CONFIG_EXAMPLES_NSH_STACKSIZE - Stack size to use for new threads.
# CONFIG_EXAMPLES_NSH_NESTDEPTH - Max number of nested if-then[-else]-fi
# CONFIG_EXAMPLES_NSH_DISABLESCRIPT - Disable scripting support
# CONFIG_EXAMPLES_NSH_DISABLEBG - Disable background commands
# CONFIG_EXAMPLES_NSH_ROMFSETC - Use startup script in /etc
# CONFIG_EXAMPLES_NSH_CONSOLE - Use serial console front end
# CONFIG_EXAMPLES_NSH_TELNET - Use telnetd console front end
# CONFIG_EXAMPLES_NSH_ARCHINIT - Platform provides architecture
# specific initialization (nsh_archinitialize()).
#
# If CONFIG_EXAMPLES_NSH_TELNET is selected:
# CONFIG_EXAMPLES_NSH_IOBUFFER_SIZE -- Telnetd I/O buffer size
# CONFIG_EXAMPLES_NSH_DHCPC - Obtain address using DHCP
# CONFIG_EXAMPLES_NSH_IPADDR - Provides static IP address
# CONFIG_EXAMPLES_NSH_DRIPADDR - Provides static router IP address
# CONFIG_EXAMPLES_NSH_NETMASK - Provides static network mask
# CONFIG_EXAMPLES_NSH_NOMAC - Use a bogus MAC address
#
# If CONFIG_EXAMPLES_NSH_ROMFSETC is selected:
# CONFIG_EXAMPLES_NSH_ROMFSMOUNTPT - ROMFS mountpoint
# CONFIG_EXAMPLES_NSH_INITSCRIPT - Relative path to init script
# CONFIG_EXAMPLES_NSH_ROMFSDEVNO - ROMFS RAM device minor
# CONFIG_EXAMPLES_NSH_ROMFSSECTSIZE - ROMF sector size
# CONFIG_EXAMPLES_NSH_FATDEVNO - FAT FS RAM device minor
# CONFIG_EXAMPLES_NSH_FATSECTSIZE - FAT FS sector size
# CONFIG_EXAMPLES_NSH_FATNSECTORS - FAT FS number of sectors
# CONFIG_EXAMPLES_NSH_FATMOUNTPT - FAT FS mountpoint
#
CONFIG_EXAMPLES_NSH_FILEIOSIZE=512
CONFIG_EXAMPLES_NSH_STRERROR=n
CONFIG_EXAMPLES_NSH_LINELEN=64
CONFIG_EXAMPLES_NSH_STACKSIZE=2048
CONFIG_EXAMPLES_NSH_NESTDEPTH=3
CONFIG_EXAMPLES_NSH_DISABLESCRIPT=n
CONFIG_EXAMPLES_NSH_DISABLEBG=n
CONFIG_EXAMPLES_NSH_ROMFSETC=n
CONFIG_EXAMPLES_NSH_CONSOLE=y
CONFIG_EXAMPLES_NSH_TELNET=n
CONFIG_EXAMPLES_NSH_ARCHINIT=n
CONFIG_EXAMPLES_NSH_IOBUFFER_SIZE=512
CONFIG_EXAMPLES_NSH_DHCPC=n
CONFIG_EXAMPLES_NSH_NOMAC=y
CONFIG_EXAMPLES_NSH_IPADDR=(10<<24|0<<16|0<<8|2)
CONFIG_EXAMPLES_NSH_DRIPADDR=(10<<24|0<<16|0<<8|1)
CONFIG_EXAMPLES_NSH_NETMASK=(255<<24|255<<16|255<<8|0)
CONFIG_EXAMPLES_NSH_ROMFSMOUNTPT="/etc"
CONFIG_EXAMPLES_NSH_INITSCRIPT="init.d/rcS"
CONFIG_EXAMPLES_NSH_ROMFSDEVNO=0
CONFIG_EXAMPLES_NSH_ROMFSSECTSIZE=64
CONFIG_EXAMPLES_NSH_FATDEVNO=1
CONFIG_EXAMPLES_NSH_FATSECTSIZE=512
CONFIG_EXAMPLES_NSH_FATNSECTORS=1024
CONFIG_EXAMPLES_NSH_FATMOUNTPT=/tmp
#
# Stack and heap information
#
# CONFIG_BOOT_RUNFROMFLASH - Some configurations support XIP
# operation from FLASH but must copy initialized .data sections to RAM.
# CONFIG_BOOT_COPYTORAM - Some configurations boot in FLASH
# but copy themselves entirely into RAM for better performance.
# CONFIG_CUSTOM_STACK - The up_ implementation will handle
# all stack operations outside of the nuttx model.
# CONFIG_STACK_POINTER - The initial stack pointer
# CONFIG_IDLETHREAD_STACKSIZE - The size of the initial stack.
# This is the thread that (1) performs the inital boot of the system up
# to the point where user_start() is spawned, and (2) there after is the
# IDLE thread that executes only when there is no other thread ready to
# run.
# CONFIG_USERMAIN_STACKSIZE - The size of the stack to allocate
# for the main user thread that begins at the user_start() entry point.
# CONFIG_PTHREAD_STACK_MIN - Minimum pthread stack size
# CONFIG_PTHREAD_STACK_DEFAULT - Default pthread stack size
# CONFIG_HEAP_BASE - The beginning of the heap
# CONFIG_HEAP_SIZE - The size of the heap
#
CONFIG_BOOT_RUNFROMFLASH=n
CONFIG_BOOT_COPYTORAM=n
CONFIG_CUSTOM_STACK=n
CONFIG_IDLETHREAD_STACKSIZE=2048
CONFIG_USERMAIN_STACKSIZE=2048
CONFIG_PTHREAD_STACK_MIN=256
CONFIG_PTHREAD_STACK_DEFAULT=2048
CONFIG_HEAP_BASE=
CONFIG_HEAP_SIZE=

View File

@ -0,0 +1,91 @@
/****************************************************************************
* configs/qemu-i486/nsh/ld.script
*
* Copyright (C) 2011 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 NuttX 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.
*
****************************************************************************/
OUTPUT_ARCH(i386)
ENTRY(__start)
SECTIONS
{
. = 0x00100000;
.text : {
_stext = ABSOLUTE(.);
*(.text .text.*)
*(.gnu.linkonce.t.*)
_etext = ABSOLUTE(.);
}
.text ALIGN (0x1000) : {
_srodata = ABSOLUTE(.);
*(.rodata .rodata.*)
*(.fixup)
*(.gnu.warning)
*(.glue_7)
*(.glue_7t)
*(.got)
*(.gcc_except_table)
*(.gnu.linkonce.r.*)
_erodata = ABSOLUTE(.);
}
.data ALIGN (0x1000) : {
_sdata = ABSOLUTE(.);
*(.data .data.*)
*(.gnu.linkonce.d.*)
CONSTRUCTORS
_edata = ABSOLUTE(.);
}
.bss : {
_sbss = ABSOLUTE(.);
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
_ebss = ABSOLUTE(.);
}
/* Stabs debugging sections */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_info 0 : { *(.debug_info) }
.debug_line 0 : { *(.debug_line) }
.debug_pubnames 0 : { *(.debug_pubnames) }
.debug_aranges 0 : { *(.debug_aranges) }
}

View File

@ -0,0 +1,48 @@
#!/bin/bash
# configs/qemu-i486/nsh/setenv.sh
#
# Copyright (C) 2011 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 NuttX 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.
#
if [ "$(basename $0)" = "setenv.sh" ] ; then
echo "You must source this script, not run it!" 1>&2
exit 1
fi
if [ -z ${PATH_ORIG} ]; then export PATH_ORIG=${PATH}; fi
# Uncomment and modify the following if you are using anything other
# than the system GCC
# WD=`pwd`
# export BUILDROOT_BIN="${WD}/../../../buildroot/build_i486/staging_dir/bin"
# export PATH="${BUILDROOT_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
echo "PATH : ${PATH}"

View File

@ -1,5 +1,5 @@
############################################################################
# configs/qemu-i486/Make.defs
# configs/qemu-i486/ostest/Make.defs
#
# Copyright (C) 2011 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>

View File

@ -362,7 +362,7 @@ CONFIG_EXAMPLE_NETTEST_CLIENTIP=(192<<24|168<<16|0<<8|106)
#
# Settings for examples/ostest
CONFIG_EXAMPLES_OSTEST_LOOPS=100
CONFIG_EXAMPLES_OSTEST_STACKSIZE=8192
CONFIG_EXAMPLES_OSTEST_STACKSIZE=4096
#
# Settings for examples/nsh
@ -370,7 +370,7 @@ CONFIG_EXAMPLES_NSH_CONSOLE=y
CONFIG_EXAMPLES_NSH_TELNET=n
CONFIG_EXAMPLES_NSH_IOBUFFER_SIZE=512
CONFIG_EXAMPLES_NSH_CMD_SIZE=40
CONFIG_EXAMPLES_NSH_STACKSIZE=4096
CONFIG_EXAMPLES_NSH_STACKSIZE=2048
CONFIG_EXAMPLES_NSH_DHCPC=n
CONFIG_EXAMPLES_NSH_NOMAC=n
CONFIG_EXAMPLES_NSH_IPADDR=(10<<24|0<<16|0<<8|2)
@ -402,9 +402,9 @@ CONFIG_EXAMPLES_NSH_NETMASK=(255<<24|255<<16|255<<8|0)
CONFIG_BOOT_RUNFROMFLASH=n
CONFIG_BOOT_COPYTORAM=n
CONFIG_CUSTOM_STACK=n
CONFIG_IDLETHREAD_STACKSIZE=4096
CONFIG_USERMAIN_STACKSIZE=4096
CONFIG_IDLETHREAD_STACKSIZE=2048
CONFIG_USERMAIN_STACKSIZE=2048
CONFIG_PTHREAD_STACK_MIN=256
CONFIG_PTHREAD_STACK_DEFAULT=8192
CONFIG_PTHREAD_STACK_DEFAULT=2048
CONFIG_HEAP_BASE=
CONFIG_HEAP_SIZE=

View File

@ -1,7 +1,7 @@
#!/bin/bash
# configs/qemu-i486/setenv.sh
# configs/qemu-i486/ostest/setenv.sh
#
# Copyright (C) 2010 Gregory Nutt. All rights reserved.
# Copyright (C) 2011 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without

View File

@ -1,7 +1,7 @@
############################################################################
# drivers/serial/Make.defs
#
# Copyright (C) 2009 Gregory Nutt. All rights reserved.
# Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
@ -33,9 +33,12 @@
#
############################################################################
SERIAL_ASRCS =
SERIAL_ASRCS =
ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
SERIAL_CSRCS = serial.c serialirq.c lowconsole.c
ifeq ($(CONFIG_16550_UART),y)
SERIAL_CSRCS += uart_16550.c
endif
else
SERIAL_CSRCS =
endif

View File

@ -52,11 +52,12 @@
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <nuttx/serial.h>
#include <nuttx/ioctl.h>
#include <nuttx/uart_16550.h>
#include <arch/board/board.h>
#ifdef CONFIG_UART_16550
#ifdef CONFIG_16550_UART
/****************************************************************************
* Pre-processor definitions
@ -66,35 +67,43 @@
* Private Types
****************************************************************************/
struct uart_16550_s
struct u16550_s
{
uart_addrwidth_t uartbase; /* Base address of UART registers */
#ifndef CONFIG_16550_SUPRESS_CONFIG
uint32_t baud; /* Configured baud */
uint32_t uartclk; /* UART clock frequency */
#endif
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
uart_datawidth_t ier; /* Saved IER value */
uint8_t irq; /* IRQ associated with this UART */
#endif
#ifndef CONFIG_16550_SUPRESS_CONFIG
uint8_t parity; /* 0=none, 1=odd, 2=even */
uint8_t bits; /* Number of bits (7 or 8) */
bool stopbits2; /* true: Configure with 2 stop bits instead of 1 */
#endif
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static int uart_setup(struct uart_dev_s *dev);
static void uart_shutdown(struct uart_dev_s *dev);
static int uart_attach(struct uart_dev_s *dev);
static void uart_detach(struct uart_dev_s *dev);
static int uart_interrupt(int irq, void *context);
static int uart_ioctl(struct file *filep, int cmd, unsigned long arg);
static int uart_receive(struct uart_dev_s *dev, uint32_t *status);
static void uart_rxint(struct uart_dev_s *dev, bool enable);
static bool uart_rxavailable(struct uart_dev_s *dev);
static void uart_send(struct uart_dev_s *dev, int ch);
static void uart_txint(struct uart_dev_s *dev, bool enable);
static bool uart_txready(struct uart_dev_s *dev);
static bool uart_txempty(struct uart_dev_s *dev);
static int u16550_setup(struct uart_dev_s *dev);
static void u16550_shutdown(struct uart_dev_s *dev);
static int u16550_attach(struct uart_dev_s *dev);
static void u16550_detach(struct uart_dev_s *dev);
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
static int u16550_interrupt(int irq, void *context);
#endif
static int u16550_ioctl(struct file *filep, int cmd, unsigned long arg);
static int u16550_receive(struct uart_dev_s *dev, uint32_t *status);
static void u16550_rxint(struct uart_dev_s *dev, bool enable);
static bool u16550_rxavailable(struct uart_dev_s *dev);
static void u16550_send(struct uart_dev_s *dev, int ch);
static void u16550_txint(struct uart_dev_s *dev, bool enable);
static bool u16550_txready(struct uart_dev_s *dev);
static bool u16550_txempty(struct uart_dev_s *dev);
/****************************************************************************
* Private Variables
@ -102,18 +111,18 @@ static bool uart_txempty(struct uart_dev_s *dev);
struct uart_ops_s g_uart_ops =
{
.setup = uart_setup,
.shutdown = uart_shutdown,
.attach = uart_attach,
.detach = uart_detach,
.ioctl = uart_ioctl,
.receive = uart_receive,
.rxint = uart_rxint,
.rxavailable = uart_rxavailable,
.send = uart_send,
.txint = uart_txint,
.txready = uart_txready,
.txempty = uart_txempty,
.setup = u16550_setup,
.shutdown = u16550_shutdown,
.attach = u16550_attach,
.detach = u16550_detach,
.ioctl = u16550_ioctl,
.receive = u16550_receive,
.rxint = u16550_rxint,
.rxavailable = u16550_rxavailable,
.send = u16550_send,
.txint = u16550_txint,
.txready = u16550_txready,
.txempty = u16550_txempty,
};
/* I/O buffers */
@ -138,15 +147,21 @@ static char g_uart3txbuffer[CONFIG_UART1_TXBUFSIZE];
/* This describes the state of the LPC17xx uart0 port. */
#ifdef CONFIG_16550_UART0
static struct uart_16550_s g_uart0priv =
static struct u16550_s g_uart0priv =
{
.uartbase = CONFIG_16550_UART0_BASE,
#ifndef CONFIG_16550_SUPRESS_CONFIG
.baud = CONFIG_UART0_BAUD,
.uartclk = CONFIG_16550_UART0_CLOCK,
#endif
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
.irq = CONFIG_16550_UART0_IRQ,
#endif
#ifndef CONFIG_16550_SUPRESS_CONFIG
.parity = CONFIG_UART0_PARITY,
.bits = CONFIG_UART0_BITS,
.stopbits2 = CONFIG_UART0_2STOP,
#endif
};
static uart_dev_t g_uart0port =
@ -169,15 +184,21 @@ static uart_dev_t g_uart0port =
/* This describes the state of the LPC17xx uart1 port. */
#ifdef CONFIG_16550_UART1
static struct uart_16550_s g_uart1priv =
static struct u16550_s g_uart1priv =
{
.uartbase = CONFIG_16550_UART1_BASE,
#ifndef CONFIG_16550_SUPRESS_CONFIG
.baud = CONFIG_UART1_BAUD,
.uartclk = CONFIG_16550_UART1_CLOCK,
#endif
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
.irq = CONFIG_16550_UART1_IRQ,
#endif
#ifndef CONFIG_16550_SUPRESS_CONFIG
.parity = CONFIG_UART1_PARITY,
.bits = CONFIG_UART1_BITS,
.stopbits2 = CONFIG_UART1_2STOP,
#endif
};
static uart_dev_t g_uart1port =
@ -200,15 +221,21 @@ static uart_dev_t g_uart1port =
/* This describes the state of the LPC17xx uart1 port. */
#ifdef CONFIG_16550_UART2
static struct uart_16550_s g_uart2priv =
static struct u16550_s g_uart2priv =
{
.uartbase = CONFIG_16550_UART2_BASE,
#ifndef CONFIG_16550_SUPRESS_CONFIG
.baud = CONFIG_UART2_BAUD,
.uartclk = CONFIG_16550_UART2_CLOCK,
#endif
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
.irq = CONFIG_16550_UART2_IRQ,
#endif
#ifndef CONFIG_16550_SUPRESS_CONFIG
.parity = CONFIG_UART2_PARITY,
.bits = CONFIG_UART2_BITS,
.stopbits2 = CONFIG_UART2_2STOP,
#endif
};
static uart_dev_t g_uart2port =
@ -231,15 +258,21 @@ static uart_dev_t g_uart2port =
/* This describes the state of the LPC17xx uart1 port. */
#ifdef CONFIG_16550_UART3
static struct uart_16550_s g_uart3priv =
static struct u16550_s g_uart3priv =
{
.uartbase = CONFIG_16550_UART3_BASE,
#ifndef CONFIG_16550_SUPRESS_CONFIG
.baud = CONFIG_UART3_BAUD,
.uartclk = CONFIG_16550_UART3_CLOCK,
#endif
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
.irq = CONFIG_16550_UART3_IRQ,
#endif
#ifndef CONFIG_16550_SUPRESS_CONFIG
.parity = CONFIG_UART3_PARITY,
.bits = CONFIG_UART3_BITS,
.stopbits2 = CONFIG_UART3_2STOP,
#endif
};
static uart_dev_t g_uart3port =
@ -425,28 +458,29 @@ static uart_dev_t g_uart3port =
************************************************************************************/
/****************************************************************************
* Name: uart_serialin
* Name: u16550_serialin
****************************************************************************/
static inline uart_datawidth_t uart_serialin(struct uart_16550_s *priv, int offset)
static inline uart_datawidth_t u16550_serialin(struct u16550_s *priv, int offset)
{
return uart_getreg(priv->uartbase, offset);
}
/****************************************************************************
* Name: uart_serialout
* Name: u16550_serialout
****************************************************************************/
static inline void uart_serialout(struct uart_16550_s *priv, int offset, uart_datawidth_t value)
static inline void u16550_serialout(struct u16550_s *priv, int offset, uart_datawidth_t value)
{
uart_putreg(priv->uartbase, offset, value);
}
/****************************************************************************
* Name: uart_disableuartint
* Name: u16550_disableuartint
****************************************************************************/
static inline void uart_disableuartint(struct uart_16550_s *priv, uart_datawidth_t *ier)
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
static inline void u16550_disableuartint(struct u16550_s *priv, uart_datawidth_t *ier)
{
if (ier)
{
@ -454,26 +488,33 @@ static inline void uart_disableuartint(struct uart_16550_s *priv, uart_datawidth
}
priv->ier &= ~UART_IER_ALLIE;
uart_serialout(priv, UART_IER_OFFSET, priv->ier);
u16550_serialout(priv, UART_IER_OFFSET, priv->ier);
}
#else
# define u16550_disableuartint(priv,ier)
#endif
/****************************************************************************
* Name: uart_restoreuartint
* Name: u16550_restoreuartint
****************************************************************************/
static inline void uart_restoreuartint(struct uart_16550_s *priv, uint32_t ier)
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
static inline void u16550_restoreuartint(struct u16550_s *priv, uint32_t ier)
{
priv->ier |= ier & UART_IER_ALLIE;
uart_serialout(priv, UART_IER_OFFSET, priv->ier);
u16550_serialout(priv, UART_IER_OFFSET, priv->ier);
}
#else
# define u16550_restoreuartint(priv,ier)
#endif
/****************************************************************************
* Name: uart_enablebreaks
* Name: u16550_enablebreaks
****************************************************************************/
static inline void uart_enablebreaks(struct uart_16550_s *priv, bool enable)
static inline void u16550_enablebreaks(struct u16550_s *priv, bool enable)
{
uint32_t lcr = uart_serialin(priv, UART_LCR_OFFSET);
uint32_t lcr = u16550_serialin(priv, UART_LCR_OFFSET);
if (enable)
{
lcr |= UART_LCR_BRK;
@ -482,11 +523,11 @@ static inline void uart_enablebreaks(struct uart_16550_s *priv, bool enable)
{
lcr &= ~UART_LCR_BRK;
}
uart_serialout(priv, UART_LCR_OFFSET, lcr);
u16550_serialout(priv, UART_LCR_OFFSET, lcr);
}
/************************************************************************************
* Name: uart_divisor
* Name: u16550_divisor
*
* Descrption:
* Select a divider to produce the BAUD from the UART_CLK.
@ -498,17 +539,19 @@ static inline void uart_enablebreaks(struct uart_16550_s *priv, bool enable)
*
************************************************************************************/
static inline uint32_t uart_divisor(struct uart_16550_s *priv)
#ifndef CONFIG_16550_SUPRESS_CONFIG
static inline uint32_t u16550_divisor(struct u16550_s *priv)
{
return (priv->uartclk + (priv->baud << 3)) / (priv->baurd << 4);
return (priv->uartclk + (priv->baud << 3)) / (priv->baud << 4);
}
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: uart_setup
* Name: u16550_setup
*
* Description:
* Configure the UART baud, bits, parity, fifos, etc. This
@ -517,24 +560,26 @@ static inline uint32_t uart_divisor(struct uart_16550_s *priv)
*
****************************************************************************/
static int uart_setup(struct uart_dev_s *dev)
static int u16550_setup(struct uart_dev_s *dev)
{
#ifndef CONFIG_16550_SUPRESS_CONFIG
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
struct u16550_s *priv = (struct u16550_s*)dev->priv;
uint16_t div;
uint32_t lcr;
/* Clear fifos */
uart_serialout(priv, UART_FCR_OFFSET, (UART_FCR_RXRST|UART_FCR_TXRST));
u16550_serialout(priv, UART_FCR_OFFSET, (UART_FCR_RXRST|UART_FCR_TXRST));
/* Set trigger */
uart_serialout(priv, UART_FCR_OFFSET, (UART_FCR_FIFOEN|UART_FCR_RXTRIGGER_8));
u16550_serialout(priv, UART_FCR_OFFSET, (UART_FCR_FIFOEN|UART_FCR_RXTRIGGER_8));
/* Set up the IER */
priv->ier = uart_serialin(priv, UART_IER_OFFSET);
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
priv->ier = u16550_serialin(priv, UART_IER_OFFSET);
#endif
/* Set up the LCR */
@ -575,28 +620,28 @@ static int uart_setup(struct uart_dev_s *dev)
/* Enter DLAB=1 */
uart_serialout(priv, UART_LCR_OFFSET, (lcr | UART_LCR_DLAB));
u16550_serialout(priv, UART_LCR_OFFSET, (lcr | UART_LCR_DLAB));
/* Set the BAUD divisor */
div = uart_divisor(priv);
uart_serialout(priv, UART_DLM_OFFSET, div >> 8);
uart_serialout(priv, UART_DLL_OFFSET, div & 0xff);
div = u16550_divisor(priv);
u16550_serialout(priv, UART_DLM_OFFSET, div >> 8);
u16550_serialout(priv, UART_DLL_OFFSET, div & 0xff);
/* Clear DLAB */
uart_serialout(priv, UART_LCR_OFFSET, lcr);
u16550_serialout(priv, UART_LCR_OFFSET, lcr);
/* Configure the FIFOs */
uart_serialout(priv, UART_FCR_OFFSET,
(UART_FCR_RXTRIGGER_8|UART_FCR_TXRST|UART_FCR_RXRST|UART_FCR_FIFOEN));
u16550_serialout(priv, UART_FCR_OFFSET,
(UART_FCR_RXTRIGGER_8|UART_FCR_TXRST|UART_FCR_RXRST|UART_FCR_FIFOEN));
#endif
return OK;
}
/****************************************************************************
* Name: uart_shutdown
* Name: u16550_shutdown
*
* Description:
* Disable the UART. This method is called when the serial
@ -604,14 +649,14 @@ static int uart_setup(struct uart_dev_s *dev)
*
****************************************************************************/
static void uart_shutdown(struct uart_dev_s *dev)
static void u16550_shutdown(struct uart_dev_s *dev)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
uart_disableuartint(priv, NULL);
struct u16550_s *priv = (struct u16550_s*)dev->priv;
u16550_disableuartint(priv, NULL);
}
/****************************************************************************
* Name: uart_attach
* Name: u16550_attach
*
* Description:
* Configure the UART to operation in interrupt driven mode. This method is
@ -625,14 +670,15 @@ static void uart_shutdown(struct uart_dev_s *dev)
*
****************************************************************************/
static int uart_attach(struct uart_dev_s *dev)
static int u16550_attach(struct uart_dev_s *dev)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
struct u16550_s *priv = (struct u16550_s*)dev->priv;
int ret;
/* Attach and enable the IRQ */
ret = irq_attach(priv->irq, uart_interrupt);
ret = irq_attach(priv->irq, u16550_interrupt);
#ifndef CONFIG_ARCH_NOINTC
if (ret == OK)
{
@ -640,14 +686,17 @@ static int uart_attach(struct uart_dev_s *dev)
* in the UART
*/
uart_enable_irq(priv->irq);
up_enable_irq(priv->irq);
}
endif
#endif
return ret;
#else
return OK;
#endif
}
/****************************************************************************
* Name: uart_detach
* Name: u16550_detach
*
* Description:
* Detach UART interrupts. This method is called when the serial port is
@ -656,33 +705,36 @@ endif
*
****************************************************************************/
static void uart_detach(struct uart_dev_s *dev)
static void u16550_detach(struct uart_dev_s *dev)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
struct u16550_s *priv = (struct u16550_s*)dev->priv;
#ifndef CONFIG_ARCH_NOINTC
uart_disable_irq(priv->irq);
up_disable_irq(priv->irq);
#endif
irq_detach(priv->irq);
#endif
}
/****************************************************************************
* Name: uart_interrupt
* Name: u16550_interrupt
*
* Description:
* This is the UART interrupt handler. It will be invoked when an
* interrupt received on the 'irq' It should call uart_transmitchars or
* uart_receivechar to perform the appropriate data transfers. The
* interrupt handling logic must be able to map the 'irq' number into the
* appropriate uart_16550_s structure in order to call these functions.
* appropriate u16550_s structure in order to call these functions.
*
****************************************************************************/
static int uart_interrupt(int irq, void *context)
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
static int u16550_interrupt(int irq, void *context)
{
struct uart_dev_s *dev = NULL;
struct uart_16550_s *priv;
uint32_t status;
int passes;
struct uart_dev_s *dev = NULL;
struct u16550_s *priv;
uint32_t status;
int passes;
#ifdef CONFIG_16550_UART0
if (g_uart0priv.irq == irq)
@ -710,12 +762,9 @@ static int uart_interrupt(int irq, void *context)
{
dev = &g_uart3port;
}
else
#endif
{
PANIC(OSERR_INTERNAL);
}
priv = (struct uart_16550_s*)dev->priv;
ASSERT(dev != NULL);
priv = (struct u16550_s*)dev->priv;
/* Loop until there are no characters to be transferred or,
* until we have been looping for a long time.
@ -727,7 +776,7 @@ static int uart_interrupt(int irq, void *context)
* termination conditions
*/
status = uart_serialin(priv, UART_IIR_OFFSET);
status = u16550_serialin(priv, UART_IIR_OFFSET);
/* The UART_IIR_INTSTATUS bit should be zero if there are pending
* interrupts
@ -769,7 +818,7 @@ static int uart_interrupt(int irq, void *context)
{
/* Read the modem status register (MSR) to clear */
status = uart_serialin(priv, UART_MSR_OFFSET);
status = u16550_serialin(priv, UART_MSR_OFFSET);
vdbg("MSR: %02x\n", status);
break;
}
@ -780,7 +829,7 @@ static int uart_interrupt(int irq, void *context)
{
/* Read the line status register (LSR) to clear */
status = uart_serialin(priv, UART_LSR_OFFSET);
status = u16550_serialin(priv, UART_LSR_OFFSET);
vdbg("LSR: %02x\n", status);
break;
}
@ -796,27 +845,28 @@ static int uart_interrupt(int irq, void *context)
}
return OK;
}
#endif
/****************************************************************************
* Name: uart_ioctl
* Name: u16550_ioctl
*
* Description:
* All ioctl calls will be routed through this method
*
****************************************************************************/
static int uart_ioctl(struct file *filep, int cmd, unsigned long arg)
static int u16550_ioctl(struct file *filep, int cmd, unsigned long arg)
{
struct inode *inode = filep->f_inode;
struct uart_dev_s *dev = inode->i_private;
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
int ret = OK;
struct inode *inode = filep->f_inode;
struct uart_dev_s *dev = inode->i_private;
struct u16550_s *priv = (struct u16550_s*)dev->priv;
int ret = OK;
switch (cmd)
{
case TIOCSERGSTRUCT:
{
struct uart_16550_s *user = (struct uart_16550_s*)arg;
struct u16550_s *user = (struct u16550_s*)arg;
if (!user)
{
*get_errno_ptr() = EINVAL;
@ -824,7 +874,7 @@ static int uart_ioctl(struct file *filep, int cmd, unsigned long arg)
}
else
{
memcpy(user, dev, sizeof(struct uart_16550_s));
memcpy(user, dev, sizeof(struct u16550_s));
}
}
break;
@ -832,7 +882,7 @@ static int uart_ioctl(struct file *filep, int cmd, unsigned long arg)
case TIOCSBRK: /* BSD compatibility: Turn break on, unconditionally */
{
irqstate_t flags = irqsave();
uart_enablebreaks(priv, true);
u16550_enablebreaks(priv, true);
irqrestore(flags);
}
break;
@ -841,7 +891,7 @@ static int uart_ioctl(struct file *filep, int cmd, unsigned long arg)
{
irqstate_t flags;
flags = irqsave();
uart_enablebreaks(priv, false);
u16550_enablebreaks(priv, false);
irqrestore(flags);
}
break;
@ -856,7 +906,7 @@ static int uart_ioctl(struct file *filep, int cmd, unsigned long arg)
}
/****************************************************************************
* Name: uart_receive
* Name: u16550_receive
*
* Description:
* Called (usually) from the interrupt level to receive one
@ -865,129 +915,143 @@ static int uart_ioctl(struct file *filep, int cmd, unsigned long arg)
*
****************************************************************************/
static int uart_receive(struct uart_dev_s *dev, uint32_t *status)
static int u16550_receive(struct uart_dev_s *dev, uint32_t *status)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
struct u16550_s *priv = (struct u16550_s*)dev->priv;
uint32_t rbr;
*status = uart_serialin(priv, UART_LSR_OFFSET);
rbr = uart_serialin(priv, UART_RBR_OFFSET);
*status = u16550_serialin(priv, UART_LSR_OFFSET);
rbr = u16550_serialin(priv, UART_RBR_OFFSET);
return rbr;
}
/****************************************************************************
* Name: uart_rxint
* Name: u16550_rxint
*
* Description:
* Call to enable or disable RX interrupts
*
****************************************************************************/
static void uart_rxint(struct uart_dev_s *dev, bool enable)
static void u16550_rxint(struct uart_dev_s *dev, bool enable)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
struct u16550_s *priv = (struct u16550_s*)dev->priv;
if (enable)
{
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
priv->ier |= UART_IER_ERBFI;
#endif
}
else
{
priv->ier &= ~UART_IER_ERBFI;
}
uart_serialout(priv, UART_IER_OFFSET, priv->ier);
u16550_serialout(priv, UART_IER_OFFSET, priv->ier);
#endif
}
/****************************************************************************
* Name: uart_rxavailable
* Name: u16550_rxavailable
*
* Description:
* Return true if the receive fifo is not empty
*
****************************************************************************/
static bool uart_rxavailable(struct uart_dev_s *dev)
static bool u16550_rxavailable(struct uart_dev_s *dev)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
return ((uart_serialin(priv, UART_LSR_OFFSET) & UART_LSR_RDR) != 0);
struct u16550_s *priv = (struct u16550_s*)dev->priv;
return ((u16550_serialin(priv, UART_LSR_OFFSET) & UART_LSR_DR) != 0);
}
/****************************************************************************
* Name: uart_send
* Name: u16550_send
*
* Description:
* This method will send one byte on the UART
*
****************************************************************************/
static void uart_send(struct uart_dev_s *dev, int ch)
static void u16550_send(struct uart_dev_s *dev, int ch)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
uart_serialout(priv, UART_THR_OFFSET, (uint32_t)ch);
struct u16550_s *priv = (struct u16550_s*)dev->priv;
u16550_serialout(priv, UART_THR_OFFSET, (uart_datawidth_t)ch);
}
/****************************************************************************
* Name: uart_txint
* Name: u16550_txint
*
* Description:
* Call to enable or disable TX interrupts
*
****************************************************************************/
static void uart_txint(struct uart_dev_s *dev, bool enable)
static void u16550_txint(struct uart_dev_s *dev, bool enable)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
struct u16550_s *priv = (struct u16550_s*)dev->priv;
irqstate_t flags;
flags = irqsave();
if (enable)
{
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
priv->ier |= UART_IER_ETBEI;
uart_serialout(priv, UART_IER_OFFSET, priv->ier);
u16550_serialout(priv, UART_IER_OFFSET, priv->ier);
/* Fake a TX interrupt here by just calling uart_xmitchars() with
* interrupts disabled (note this may recurse).
*/
uart_xmitchars(dev);
#endif
}
else
{
priv->ier &= ~UART_IER_ETBEI;
uart_serialout(priv, UART_IER_OFFSET, priv->ier);
u16550_serialout(priv, UART_IER_OFFSET, priv->ier);
}
irqrestore(flags);
#endif
}
/****************************************************************************
* Name: uart_txready
* Name: u16550_txready
*
* Description:
* Return true if the tranmsit fifo is not full
*
****************************************************************************/
static bool uart_txready(struct uart_dev_s *dev)
static bool u16550_txready(struct uart_dev_s *dev)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
return ((uart_serialin(priv, UART_LSR_OFFSET) & UART_LSR_THRE) != 0);
struct u16550_s *priv = (struct u16550_s*)dev->priv;
return ((u16550_serialin(priv, UART_LSR_OFFSET) & UART_LSR_THRE) != 0);
}
/****************************************************************************
* Name: uart_txempty
* Name: u16550_txempty
*
* Description:
* Return true if the transmit fifo is empty
*
****************************************************************************/
static bool uart_txempty(struct uart_dev_s *dev)
static bool u16550_txempty(struct uart_dev_s *dev)
{
struct uart_16550_s *priv = (struct uart_16550_s*)dev->priv;
return ((uart_serialin(priv, UART_LSR_OFFSET) & UART_LSR_THRE) != 0);
struct u16550_s *priv = (struct u16550_s*)dev->priv;
return ((u16550_serialin(priv, UART_LSR_OFFSET) & UART_LSR_THRE) != 0);
}
/****************************************************************************
* Name: u16550_putc
*
* Description:
* Write one character to the UART (polled)
*
****************************************************************************/
static void u16550_putc(struct u16550_s *priv, int ch)
{
while ((u16550_serialin(priv, UART_LSR_OFFSET) & UART_LSR_THRE) != 0);
u16550_serialout(priv, UART_THR_OFFSET, (uart_datawidth_t)ch);
}
/****************************************************************************
@ -995,7 +1059,7 @@ static bool uart_txempty(struct uart_dev_s *dev)
****************************************************************************/
/****************************************************************************
* Name: uart_serialinit
* Name: up_earlyserialinit
*
* Description:
* Performs the low level UART initialization early in debug so that the
@ -1007,39 +1071,41 @@ static bool uart_txempty(struct uart_dev_s *dev)
*
****************************************************************************/
void uart_earlyserialinit(void)
void up_earlyserialinit(void)
{
/* Configure all UARTs (except the CONSOLE UART) and disable interrupts */
#ifdef CONFIG_16550_UART0
uart_disableuartint(&g_uart0priv, NULL);
u16550_disableuartint(&g_uart0priv, NULL);
#endif
#ifdef CONFIG_16550_UART1
uart_disableuartint(&g_uart1priv, NULL);
u16550_disableuartint(&g_uart1priv, NULL);
#endif
uart_disableuartint(&g_uart2priv, NULL);
#ifdef CONFIG_16550_UART2
u16550_disableuartint(&g_uart2priv, NULL);
#endif
uart_disableuartint(&g_uart3priv, NULL);
#ifdef CONFIG_16550_UART3
u16550_disableuartint(&g_uart3priv, NULL);
#endif
/* Configuration whichever one is the console */
#ifdef CONSOLE_DEV
CONSOLE_DEV.isconsole = true;
uart_setup(&CONSOLE_DEV);
u16550_setup(&CONSOLE_DEV);
#endif
}
/****************************************************************************
* Name: uart_serialinit
* Name: up_serialinit
*
* Description:
* Register serial console and serial ports. This assumes that
* uart_earlyserialinit was called previously.
* up_earlyserialinit was called previously.
*
****************************************************************************/
void uart_serialinit(void)
void up_serialinit(void)
{
#ifdef CONSOLE_DEV
(void)uart_register("/dev/console", &CONSOLE_DEV);
@ -1059,7 +1125,7 @@ void uart_serialinit(void)
}
/****************************************************************************
* Name: uart_putc
* Name: up_putc
*
* Description:
* Provide priority, low-level access to support OS debug writes
@ -1067,12 +1133,14 @@ void uart_serialinit(void)
****************************************************************************/
#ifdef HAVE_16550_CONSOLE
int uart_putc(int ch)
int up_putc(int ch)
{
struct uart_16550_s *priv = (struct uart_16550_s*)CONSOLE_DEV.priv;
struct u16550_s *priv = (struct u16550_s*)CONSOLE_DEV.priv;
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
uart_datawidth_t ier;
uart_disableuartint(priv, &ier);
u16550_disableuartint(priv, &ier);
#endif
/* Check for LF */
@ -1080,11 +1148,13 @@ int uart_putc(int ch)
{
/* Add CR */
uart_lowputc('\r');
u16550_putc(priv, '\r');
}
uart_lowputc(ch);
uart_restoreuartint(priv, ier);
u16550_putc(priv, ch);
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
u16550_restoreuartint(priv, ier);
#endif
return ch;
}
#endif

View File

@ -43,7 +43,7 @@
#include <nuttx/config.h>
#ifdef CONFIG_UART_16550
#ifdef CONFIG_16550_UART
/************************************************************************************
* Pre-processor Definitions
@ -75,7 +75,7 @@
# error "CONFIG_16550_REGWIDTH not defined"
#endif
#if CONFIG_16550_REGWIDTH != 1 && CONFIG_16550_REGWIDTH != 2 && CONFIG_16550_REGWIDTH != 4
#if CONFIG_16550_REGWIDTH != 8 && CONFIG_16550_REGWIDTH != 16 && CONFIG_16550_REGWIDTH != 32
# error "CONFIG_16550_REGWIDTH not supported"
#endif
@ -83,7 +83,7 @@
# error "CONFIG_16550_ADDRWIDTH not defined"
#endif
#if CONFIG_16550_ADDRWIDTH != 1 && CONFIG_16550_ADDRWIDTH != 2 && CONFIG_16550_ADDRWIDTH != 4
#if CONFIG_16550_ADDRWIDTH != 8 && CONFIG_16550_ADDRWIDTH != 16 && CONFIG_16550_ADDRWIDTH != 32
# error "CONFIG_16550_ADDRWIDTH not supported"
#endif
@ -311,19 +311,19 @@
* Public Types
************************************************************************************/
#if CONFIG_16550_REGWIDTH == 1
#if CONFIG_16550_REGWIDTH == 8
typedef uint8_t uart_datawidth_t;
#elif CONFIG_16550_REGWIDTH == 2
#elif CONFIG_16550_REGWIDTH == 16
typedef uint16_t uart_datawidth_t;
#elif CONFIG_16550_REGWIDTH == 4
#elif CONFIG_16550_REGWIDTH == 32
typedef uint32_t uart_datawidth_t;
#endif
#if CONFIG_16550_REGWIDTH == 1
#if CONFIG_16550_ADDRWIDTH == 8
typedef uint8_t uart_addrwidth_t;
#elif CONFIG_16550_REGWIDTH == 2
#elif CONFIG_16550_ADDRWIDTH == 16
typedef uint16_t uart_addrwidth_t;
#elif CONFIG_16550_REGWIDTH == 4
#elif CONFIG_16550_ADDRWIDTH == 32
typedef uint32_t uart_addrwidth_t;
#endif