Clean up of pirelli-dpl10/nsh_highram configuration

arch/arm/src/arm/Kconfig

@@ -17,6 +17,10 @@ config ARM_TOOLCHAIN_BUILDROOT
 config ARM_TOOLCHAIN_CODESOURCERYL
 	bool "CodeSourcery GNU toolchain under Linux"
 	depends on HOST_LINUX
+	---help---
+		For use with the GNU toolchain built with the NuttX buildroot package.
+		This tools may be arm-nuttx-eabi- or, if ARM_OABI_TOOLCHAIN is set,
+		arm-nuttx-elf-.
 
 config ARM_TOOLCHAIN_CODESOURCERYW
 	bool "CodeSourcery GNU toolchain under Windows"
@@ -30,7 +34,12 @@ config ARM_TOOLCHAIN_GNU_EABI
 	bool "Generic GNU EABI toolchain"
 	---help---
 		This option should work for any modern GNU toolchain (GCC 4.5 or newer)
-		configured for arm-none-eabi.
+		configured for arm-none-eabi-.
+
+config ARM_TOOLCHAIN_GNU_OABI
+	bool "Generic GNU OABI toolchain"
+	---help---
+		This option should work for any GNU toolchain configured for arm-elf-.
 
 endchoice
 

configs/pirelli_dpl10/README.txt

@@ -54,6 +54,21 @@ o highram is for phones having the romloader(if the phone has a bootrom)
   by talking to the ramloader) when having a ramloader(which can only
   load 64k).
 
+Memory Map
+=========
+
+Calypso has 256KB of internal SRAM (0x800000-0x83ffff).  Only this internal SRAM
+is used by these configurations.  The internal SRAM is broken up into three
+logic banks.
+
+    LRAM (rw) : ORIGIN = 0x00800000, LENGTH = 0x00020000
+    TRAM (rw) : ORIGIN = 0x00820000, LENGTH = 0x00010000
+    IRAM (rw) : ORIGIN = 0x00830000, LENGTH = 0x00010000
+
+Code can be loaded by the bootloader only into TRAM and, hence, is restricted
+to 64KB.  The additional 64KB if IRAM may be used for uninitialized data and
+for the NuttX heap only.
+
 JTAG and Alternative Serial Console
 ===================================
 
@@ -116,3 +131,54 @@ JTAG Apapter:
                                       the MCU to enter a bootloader on reset.
                                       Use 10K-100K Ohm pull up resistor.
   ------- ----------- --------------- --------------------------------------
+
+NuttX OABI "buildroot" Toolchain
+================================
+
+  A GNU GCC-based toolchain is assumed.  The files */setenv.sh should
+  be modified to point to the correct path to the ARM GCC toolchain (if
+  different from the default in your PATH variable).
+
+  If you have no ARMtoolchain, one can be downloaded from the NuttX
+  SourceForge download site (https://sourceforge.net/projects/nuttx/files/buildroot/).
+  This GNU toolchain builds and executes in the Linux or Cygwin environment.
+
+  1. You must have already configured Nuttx in <some-dir>/nuttx.
+
+     cd tools
+     ./configure.sh pirelli_dpl10/<sub-dir>
+
+  2. Download the latest buildroot package into <some-dir>
+
+  3. unpack the buildroot tarball.  The resulting directory may
+     have versioning information on it like buildroot-x.y.z.  If so,
+     rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot.
+
+  4. cd <some-dir>/buildroot
+
+  5. cp configs/arm7tdmi-defconfig-4.3.3 .config
+
+  6. make oldconfig
+
+  7. make
+
+  8. Edit setenv.h, if necessary, so that the PATH variable includes
+     the path to the newly built binaries.
+
+  See the file configs/README.txt in the buildroot source tree.  That has more
+  details PLUS some special instructions that you will need to follow if you are
+  building a Cortex-M3 toolchain for Cygwin under Windows.
+
+Generic OABI Toolchain
+======================
+
+  The NuttX OABI toolchain is selected with:
+
+    CONFIG_ARM_TOOLCHAIN_BUILDROOT=y
+    CONFIG_ARM_OABI_TOOLCHAIN=y
+
+  In most cases, OsmocomBB is built with a different OABI toolchain with a 
+  prefix of arm-elf-.  To use that toolchain, change the configuration as
+  follows:
+
+    CONFIG_ARM_TOOLCHAIN_GNU_OABI=y

configs/pirelli_dpl10/nsh_highram/Make.defs

@@ -35,6 +35,7 @@
 
 include ${TOPDIR}/.config
 include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ("${CONFIG_SERCOMM_CONSOLE}","y")
 OSMODIR		= $(TOPDIR)/../../osmocom-bb
@@ -45,7 +46,6 @@ EXTRA_LIBS	= $(OSMODIR)/src/target/firmware/comm/libcomm.a \
 			# ^^^ Stupid hack! Why do I have to put it twice???
 endif
 
-CROSSDEV	= arm-elf-
 CC			= $(CROSSDEV)gcc
 CPP			= $(CROSSDEV)gcc -E
 LD			= $(CROSSDEV)ld
@@ -73,7 +73,7 @@ ARCHPICFLAGS	= -fpic -msingle-pic-base -mpic-register=r10
 ARCHWARNINGS	= -Wall -Wstrict-prototypes -Wshadow
 ARCHDEFINES		=
 ARCHINCLUDES	= -I. -I$(OSMODIR)/src/shared/libosmocore/include -isystem $(TOPDIR)/include
-ARCHSCRIPT		= -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh_highram/ld.script
+ARCHSCRIPT		= -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/highram.ld
 
 CFLAGS			= $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
 				  $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe

configs/pirelli_dpl10/nsh_highram/defconfig

@@ -145,8 +145,8 @@ CONFIG_ARCH_STACKDUMP=y
 #
 CONFIG_BOARD_LOOPSPERMSEC=1250
 # CONFIG_ARCH_CALIBRATION is not set
-CONFIG_DRAM_START=0
+CONFIG_DRAM_START=0x00800000
-CONFIG_DRAM_SIZE=8650752
+CONFIG_DRAM_SIZE=262144
 CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
 CONFIG_ARCH_INTERRUPTSTACK=1024
 
@@ -235,10 +235,10 @@ CONFIG_PREALLOC_TIMERS=8
 #
 # Stack and heap information
 #
-CONFIG_IDLETHREAD_STACKSIZE=4096
+CONFIG_IDLETHREAD_STACKSIZE=2048
-CONFIG_USERMAIN_STACKSIZE=4096
+CONFIG_USERMAIN_STACKSIZE=2048
 CONFIG_PTHREAD_STACK_MIN=256
-CONFIG_PTHREAD_STACK_DEFAULT=4096
+CONFIG_PTHREAD_STACK_DEFAULT=2048
 
 #
 # Device Drivers