Sabre-6quad: Add an SMP configuration; Enable procfs in both configurations

configs/sabre-6quad/README.txt

@@ -75,6 +75,52 @@ SMP.
 are known SMP open issues so I assume if the tasking were stressed more there
 would be additional failures.  See the open issues below under SMP.
 
+An smp configuration was added.  This is not quite the same as the configuration that I used for testing.  I enabled DEBUG output, ran with only 2 CPUS, and disabled the RAMLOG:
+
+  +CONFIG_DEBUG=y
+  +CONFIG_DEBUG_VERBOSE=y
+  +CONFIG_DEBUG_SCHED=y
+  +CONFIG_DEBUG_SYMBOLS=y
+
+  -CONFIG_DEBUG_FULLOPT=y
+  +CONFIG_DEBUG_NOOPT=y
+
+  -CONFIG_SMP_NCPUS=4
+  +CONFIG_SMP_NCPUS=2
+
+  -CONFIG_RAMLOG=y
+  -CONFIG_RAMLOG_SYSLOG=y
+  -CONFIG_RAMLOG_BUFSIZE=16384
+  -CONFIG_RAMLOG_NONBLOCKING=y
+  -CONFIG_RAMLOG_NPOLLWAITERS=4
+  -CONFIG_SYSLOG=y
+
+I would also disable debug output from CPU0 so that I could better see the debug output from CPU1:
+
+  $ diff -u libc/syslog/lib_lowsyslog.c libc/syslog/lib_lowsyslog.c.SAVE
+  --- libc/syslog/lib_lowsyslog.c 2016-05-22 14:56:35.130096500 -0600
+  +++ libc/syslog/lib_lowsyslog.c.SAVE    2016-05-20 13:36:22.588330100 -0600
+  @@ -126,7 +126,0 @@
+   {
+     va_list ap;
+     int ret;
+  +if (up_cpu_index() == 0) return 17; // REMOVE ME
+  
+     /* Let lowvsyslog do the work */
+  
+     va_start(ap, fmt);
+  
+  $ diff -u libc/syslog/lib_syslog.c libc/syslog/lib_syslog.c.SAVE
+  --- libc/syslog/lib_syslog.c    2016-05-22 14:56:35.156098100 -0600
+  +++ libc/syslog/lib_syslog.c.SAVE       2016-05-20 13:36:15.331284000 -0600
+  @@ -192,6 +192,7 @@
+   {
+     va_list ap;
+     int ret;
+  +if (up_cpu_index() == 0) return 17; // REMOVE ME
+  
+     /* Let vsyslog do the work */
+
 Platform Features
 =================
 
@@ -604,3 +650,16 @@ Configuration sub-directories
        File Systems:    CONFIG_SYSLOG
        Device Drivers:  CONFIG_RAMLOG
 
+
+  smp
+  ---
+    This is a configuration of testing the SMP configuration.  It is
+    essentially equivalent to the SMP configuration except has SMP enabled.
+
+    NOTES:
+
+    1. See the notest for the nsh configuration.  Since this configuration
+       is essentially the same all of those comments apply.
+
+    2. SMP is not fully functional.  See the STATUS and SMP sections above
+       for detailed SMP-related issues.

configs/sabre-6quad/nsh/defconfig

@@ -121,6 +121,8 @@ CONFIG_ARCH_CORTEXA9=y
 # CONFIG_ARCH_CORTEXR7F is not set
 CONFIG_ARCH_FAMILY="armv7-a"
 CONFIG_ARCH_CHIP="imx6"
+# CONFIG_ARM_TOOLCHAIN_IAR is not set
+# CONFIG_ARM_TOOLCHAIN_GNU is not set
 CONFIG_ARCH_HAVE_FPU=y
 # CONFIG_ARCH_HAVE_DPFPU is not set
 CONFIG_ARCH_FPU=y
@@ -517,7 +519,7 @@ CONFIG_RAMLOG_NPOLLWAITERS=4
 # CONFIG_DISABLE_MOUNTPOINT is not set
 # CONFIG_FS_AUTOMOUNTER is not set
 # CONFIG_DISABLE_PSEUDOFS_OPERATIONS is not set
-# CONFIG_FS_READABLE is not set
+CONFIG_FS_READABLE=y
 # CONFIG_FS_WRITABLE is not set
 # CONFIG_FS_NAMED_SEMAPHORES is not set
 CONFIG_FS_MQUEUE_MPATH="/var/mqueue"
@@ -528,7 +530,15 @@ CONFIG_FS_MQUEUE_MPATH="/var/mqueue"
 # CONFIG_FS_TMPFS is not set
 # CONFIG_FS_SMARTFS is not set
 # CONFIG_FS_BINFS is not set
-# CONFIG_FS_PROCFS is not set
+CONFIG_FS_PROCFS=y
+# CONFIG_FS_PROCFS_REGISTER is not set
+
+#
+# Exclude individual procfs entries
+#
+# CONFIG_FS_PROCFS_EXCLUDE_PROCESS is not set
+# CONFIG_FS_PROCFS_EXCLUDE_UPTIME is not set
+# CONFIG_FS_PROCFS_EXCLUDE_MOUNTS is not set
 # CONFIG_FS_UNIONFS is not set
 
 #
@@ -607,6 +617,7 @@ CONFIG_LIB_SENDFILE_BUFSIZE=512
 CONFIG_ARCH_HAVE_TLS=y
 # CONFIG_TLS is not set
 # CONFIG_LIBC_NETDB is not set
+# CONFIG_NETDB_HOSTFILE is not set
 
 #
 # Non-standard Library Support
@@ -701,6 +712,7 @@ CONFIG_EXAMPLES_NSH_CXXINITIALIZE=y
 # File System Utilities
 #
 # CONFIG_FSUTILS_INIFILE is not set
+# CONFIG_FSUTILS_PASSWD is not set
 
 #
 # GPS Utilities
@@ -716,6 +728,7 @@ CONFIG_EXAMPLES_NSH_CXXINITIALIZE=y
 #
 # Interpreters
 #
+# CONFIG_INTERPRETERS_BAS is not set
 # CONFIG_INTERPRETERS_FICL is not set
 # CONFIG_INTERPRETERS_PCODE is not set
 # CONFIG_INTERPRETERS_MICROPYTHON is not set
@@ -730,6 +743,7 @@ CONFIG_EXAMPLES_NSH_CXXINITIALIZE=y
 #
 # CONFIG_NETUTILS_CHAT is not set
 # CONFIG_NETUTILS_CODECS is not set
+# CONFIG_NETUTILS_ESP8266 is not set
 # CONFIG_NETUTILS_FTPC is not set
 # CONFIG_NETUTILS_JSON is not set
 # CONFIG_NETUTILS_SMTP is not set
@@ -812,6 +826,7 @@ CONFIG_NSH_DISABLE_LOSMART=y
 # CONFIG_NSH_CMDOPT_DF_H is not set
 CONFIG_NSH_CODECS_BUFSIZE=128
 # CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_NSH_PROC_MOUNTPOINT="/proc"
 CONFIG_NSH_FILEIOSIZE=512
 
 #

configs/sabre-6quad/nsh/setenv.sh

 #!/bin/bash
-# configs/sabre-6quad/nsh/Make.defs
+# configs/sabre-6quad/nsh/setenv.sh
 #
 #   Copyright (C) 2016 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>

configs/sabre-6quad/smp/Make.defs

+############################################################################
+# configs/sabre-6quad/smp/Make.defs
+#
+#   Copyright (C) 2016 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-a$(DELIM)Toolchain.defs
+
+LDSCRIPT = dramboot.ld
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)configs$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)$(LDSCRIPT)}"
+else
+  # Linux/Cygwin-native toolchain
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
+  ARCHSCRIPT = -T$(TOPDIR)$(DELIM)configs$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(ARCROSSDEV)ar rcs
+NM = $(ARCROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHOPTIMIZATION = -g
+endif
+
+ifneq ($(CONFIG_DEBUG_NOOPT),y)
+  ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCPUFLAGS = -mcpu=cortex-a9 -mfpu=vfpv4-d16
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fno-rtti
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
+ARCHWARNINGSXX = -Wall -Wshadow -Wundef
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+# NXFLAT module definitions
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)$(DELIM)binfmt$(DELIM)libnxflat$(DELIM)gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+# ELF module definitions
+
+CELFFLAGS = $(CFLAGS) -mlong-calls # --target1-abs
+CXXELFFLAGS = $(CXXFLAGS) -mlong-calls # --target1-abs
+
+LDELFFLAGS = -r -e main
+ifeq ($(WINTOOL),y)
+  LDELFFLAGS += -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/gnu-elf.ld}"
+else
+  LDELFFLAGS += -T $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/gnu-elf.ld
+endif
+
+ASMEXT = .S
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
+HOSTLDFLAGS =
+ifeq ($(CONFIG_HOST_WINDOWS),y)
+  HOSTEXEEXT = .exe
+else
+  HOSTEXEEXT =
+endif
+
+ifeq ($(WINTOOL),y)
+  # Windows-native host tools
+  DIRLINK = $(TOPDIR)$(DELIM)tools$(DELIM)copydir.sh
+  DIRUNLINK = $(TOPDIR)$(DELIM)tools$(DELIM)unlink.sh
+  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
+else
+  # Linux/Cygwin-native host tools
+  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
+endif

configs/sabre-6quad/smp/setenv.sh

+#!/bin/bash
+# configs/sabre-6quad/smp/setenv.sh
+#
+#   Copyright (C) 2016 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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 [ "$_" = "$0" ] ; then
+  echo "You must source this script, not run it!" 1>&2
+  exit 1
+fi
+
+WD=`pwd`
+if [ ! -x "setenv.sh" ]; then
+  echo "This script must be executed from the top-level NuttX build directory"
+  exit 1
+fi
+
+if [ -z "${PATH_ORIG}" ]; then
+  export PATH_ORIG="${PATH}"
+fi
+
+# This is the Cygwin path to the location where I installed the Atmel GCC
+# toolchain under Windows.  You will also have to edit this if you install
+# this toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/Atmel/Atmel Toolchain/ARM GCC/Native/4.7.3.99/arm-gnu-toolchain/bin"
+
+# This is the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows.  You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin"
+# export TOOLCHAIN_BIN="/cygdrive/c/Users/MyName/MentorGraphics/Sourcery_CodeBench_Lite_for_ARM_EABI/bin"
+
+# This is the location where I installed the ARM "GNU Tools for ARM Embedded Processors"
+# You can this free toolchain here https://launchpad.net/gcc-arm-embedded
+export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/GNU Tools ARM Embedded/4.9 2015q2/bin"
+
+# This is the path to the location where I installed the devkitARM toolchain
+# You can get this free toolchain from http://devkitpro.org/ or http://sourceforge.net/projects/devkitpro/
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/devkitARM/bin"
+
+# This is the Cygwin path to the location where I build the buildroot
+# toolchain.
+# export TOOLCHAIN_BIN="${WD}/../buildroot/build_arm_nofpu/staging_dir/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"