RCC-1.1.1 User`s Manual
Contents
1. Foundation Inc License GPLv3 GNU GPL version 3 or later lt http gnu org licenses gpl html gt This is free software you are free to change and redistribute it There is NO WARRANTY to th xtent permitted by law Type show copying and show warranty for details This GDB was configured as host 1i686 pc linux gnu target sparc rtems gdb tar extended remote localhost 2222 Remote debugging using localhost 2222 gdb load Loading section text size 0x164e0 lma 0x40000000 Loading section jcr size 0x4 lma 0x400164e0 Loading section data size Oxaa8 lma 0x400164e8 Start address 0x40000000 load size 94092 Transfer rate 57902 bits sec 277 bytes write gdb break Init Breakpoint 2 at 0x400011f8 file rtems hello c line 33 gdb run GAISLER RESEARCH 17 RCC User s Manual The program being debugged has been started already Start it from the beginning y or n y Starting program opt rtems 4 8 src samples rtems hello Breakpoint 2 Init ignored 0 at rtems hello c 33 33 printf Hello World n gdb cont Continuing Hello World Program exited with code 0363 The application must be re loaded with the load command before it is possible to re execute it 3 4 Using DDD graphical front end to gdb DDD is a graphical front end to gdb and can be used regardless of target The DDD graphical debugger is freely available from http www gnu org software ddd To start DDD2. optional but recommended when debugging applications The tool chain libraries are built with debugging symbols making it possible for GDB to find the source files The RCC RTEMS sources is assumed to be located in C opt rtems 4 8 mingw src rtems 4 8 The RTEMS sources sparc rtems 4 8 1 1 x sre tar bz2 can be installed by extracting the source distribution to C opt rtems 4 8 mingw src creating the directory C opt rtems 4 8 mingw src rtems 4 8 1 2 2 3 Building RTEMS from source The RTEMS build environment can be set up by following the Windows instructions available www rtems org the environment requires MSYS DTK 1 0 1 autoconf 2 61 and automake 1 10 This section describes how to install MSYS DTK autoconf automake and building RTEMS SPARC BSPS from source MSYS DTK can be downloaded from www mingw org it comes as an self extracting installation application msysDTK 1 0 1 exe The following text assumes that MSYS DTK has been installed successfully into the MSYS environment Autoconf and automake can be downloaded from ftp ftp gnu org gnu autoconf and ftp ftp gnu org gnu auto make Below is a example of how to build and install the required tools mkdir src cd src lt download autoconf and automake to src gt tar jxf autoconf 2 61 tar bz2 mkdir autoconf 2 61 build GAISLER RESEARCH RCC User s Manual cd autoconf 2 61 build configure prefix usr make make install lt autoc
3. parc rtems cpp parc rtems g parec rtems gcee parc rtems gcov parc rtems gdb parc rtems gprof parc rtems ld parc rtems nm parc rtems objcopy parc rtems objdump parc rtems ranlib parc rtems readelf parc rtems size parc rtems strings parc rtems strip S S S S S S S S S S S S S S S S S S S S parc rtems addr2line Convert address to C C line number Library archiver Cross assembler C cross compiler Utility to demangle C symbols The C preprocessor Same as sparc rtems c C C cross compiler Coverage testing tool Debugger Profiling utility GNU linker tility to print symbol table tility to convert between binary formats tility to dump various parts of executables ibrary sorter F file information utility tility to display segment sizes tility to dump strings from executables tility to remove symbol table enen GaGa GAISLER RESEARCH RCC User s Manual 1 5 Documentation The RCC and GNU documentation are distributed together with the toolchain it consists of RTEMS manuals and GNU tools manuals GNU manuals as pdf Using as the GNU assembler binutils pdf The GNU binary utilities cpp pdf The C Preprocessor gee pdf Using and porting GCC gdb pdf Debugging with GDB gprof pdf the GNU profiling utility ld pdf The GNU linker Newlib C library libe pdf Newlib C Library libm pdf Newlib Math Library
4. 0X40000000 Figure 1 RCC RAM applications memory map The SPARC trap table always occupies the first 4 Kbyte of the text segment GAISLER RESEARCH 11 RCC User s Manual 2 7 Board support packages BSPs RCC includes board support packages for LEON2 LEON3 and ERC32 BSPs provide interface between RTEMS and target hardware through initialization code specific to target processor and a number of device drivers Console and timer drivers are supported for all three processors The LEON2 3 BSPs support three network drivers the Gaisler Research GRETH MAC OpenCores Ethernet MAC and the LAN91C111 The default driver for LEON3 is the GRETH MAC To select a different network driver one of following defines should be set before including the bsp h file define RTEMS_BSP_NETWORK_DRIVER_ATTACH RTEMS_BSP_NETWORK_DRIVER_ATTACH_OPENETH define RTEMS_BSP_NETWORK_DRIVER_ATTACH RTEMS_BSP_NETWORK_DRIVER_ATTACH_SMC91111 See src samples rtems_ttcp c or rtems_http c for sample networking applications LEON2 and ERC32 BSPs assume a default system resource configuration such as memory mapping of on chip devices and usage of interrupt resources LEON3 systems are based on GRLIB plug amp play configuration and are thereby highly configurable regarding memory mapping and interrupt routing At start up LEON3 BSP scans the system bus to obtain system config
5. RCC 1 1 1 RCC User s Manual Veriontad March 2008 GAISLER RESEARCH RCC User s Manual Copyright 2008 Gaisler Research Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying provided also that the entire resulting derived work is distributed under the terms of a permission notice identical to this one Permission is granted to copy and distribute translations of this manual into another language under the above conditions for modified versions GAISLER RESEARCH RCC 1 1 1 1 Introd cense ea SEA 4 1 1 Generale onne me Pe E E EE E E eet 4 1 2 Installation on host platform seeeseseeseseeeseeseesersrrssrrsrrssrsererressreeresressessresees 4 12 1 WARS CPSU RI LS sa aioreirci scan setcn eeepc etascmviiasata sia eissii atie asesi 4 1 22 Installing RCC on Windows platforms naeve eeen eenn 4 1 2 3 Installing on Linux platforms serene 6 1 3 Contents of opt rtems 4 8 vc iasceinagstassitceunsiesasetacndereiedeaaadeaasaabvandsnaseoeseasededtaunes 7 1 4 de cg causes e R E E AARS 7 1 5 Dolmen neden deed bedeesd 8 1 6 DUP OCU PANE E Bada ihekaenahahteaikn bent rahanennihhehennhibgese 8 2 Using LC OEE 9 2 1 General development LOM ete 9 2 2 sparc rtems gcc Options erneer tiscendeheaciusquedasvas
6. RTEMS manuals bsp_howto pdf BSP and Device Driver Development Guide c_user pdf RTEMS C User s Guide this is the one you want cpu_supplement pdf RTEMS SPARC CPU Application Supplement develenv pdf RTEMS Development environment guide filesystem pdf RTEMS Filesystem Design Guide itron pdf RTEMS ITRON 3 0 User s Guide networking pdf RTEMS Network Supplement new_chapters pdf RTEMS Newly added features porting pdf RTEMS Porting Guide posix1003 1 pdf RTEMS POSIX 1003 1 Compliance Guide posix_users pdf RTEMS POSIX API User s Guide relnotes pdf RTEMS Release Notes started pdf Getting Started with RTEMS for C C Users The documents are all provided in PDF format with searchable indexes 1 6 Support The RCC compiler system is provided freely without any warranties Technical support can be obtained from Gaisler Research through the purchase of a technical support contract See www gaisler com for more details GAISLER RESEARCH RCC User s Manual 2 Using RCC 2 1 General development flow Compilation and debugging of applications is typically done in the following steps 1 Compile and link program with gcc 2 Debug program using a simulator gdb connected to TSIM GRSIM 3 Debug program on remote target gdb connected to GRMON 4 Create boot prom for a standalone application with mkprom2 RCC supports multi tasking real time C C programs based on the RTEMS kernel Compiling and linking is done in much the same manner
7. aisler Research RCC consists of the following packages e GCC 4 2 4 C C compiler e GNU binary utilities 2 18 with support for LEON UMAC SMAC instructions e RTEMS 4 8 C C real time kernel with LEON2 LEON3 and ERC32 support e Newlib 1 15 0 standalone C library e GDB 6 8 SPARC cross debugger 1 2 Installation on host platform 1 2 1 Host requirements RCC is provided for two host platforms linux x86 and MS Windows The following are the platform system requirements Linux Linux 2 4 x glibc 2 3 or higher Windows MSYS 1 0 10 or higher In order to recompile the RTEMS kernel sources automake 1 10 and autoconf 2 61 is required MSYS DTK 1 0 1 is needed on Windows platforms to build autoconf and automake The sources of automake and autoconf can be found on the GNU ftp server ftp ftp gnu org gnu autoconf ftp ftp gnu org gnu automake MSYS and MSYS DTK can be found at http www mingw org 1 2 2 Installing RCC on Windows platforms The toolchain installation zip file sparc rtems 4 8 gcc 4 2 4 1 1 x mingw zip must be extracted to C opt cre ating the directory C opt rtems 4 8 mingw The toolchain executables can be invoked from the command prompt by adding the executable directory to the PATH environment variable The directory C opt rtems 4 8 mingw bin can be added to the PATH variable by selecting My Computer gt Properties gt Advanced gt Environ ment Variables Development often requires some basic utilitie
8. as with a host based gcc 2 2 sparc rtems gcc options The gcc compiler has been modified to support the following addtional options qleon2 generate LEON2 executable tsc691 generate ERC32 executable Other usefull standard options are g generate debugging information must be used for debugging with gdb msoft float emulate floating point must be used if no FPU exists in the system mcpu v8 generate SPARC V8 mul div instructions only for LEON with hardware multiply and divide configured 02 optimize code should be used for optimum performance and minimal code size Other gcc options are explained in the gcc manual gcc pdf 2 3 RTEMS applications To compile and link an RTEMS application use sparc rtems gcc sparc rtems gcc g 02 rtems hello c o rtems hello RCC creates executables for LEON3 by default To generate executables for LEON2 or ERC32 add qleon2 or tsc691 switches during both compile and link stages The default load address is start of RAM i e 0x40000000 for LEON2 3 and 0x2000000 for ERC32 Other load addresses can be specified through the use of the Ttext option see gcc manual RCC uses the sources of RTEMS 4 8 with minor patches and allows re compilation if a modification has been made to a bsp or the kernel Install the RTEMS sources in opt rtems 4 8 src and re compile and install with ed opt rtems 4 8 src make install GAISLER RESEARCH 10 RCC User s Manual 2 4 Floating
9. e section text at 0x60100000 size 143616 bytes section data at 0x60123100 size 3200 bytes total size 146816 bytes 172 7 kbit s read 852 symbols entry point 0x60100000 grlib gt cpu act 0 active cpu 0 GAISLER RESEARCH si RCC User s Manual grlib gt ep 0x60000000 entry point 0x60000000 grlib gt stack 0x600fff00 stack pointer 0x600fff00 grlib gt cpu act 1 active cpu 1 grlib gt ep 0x60100000 entry point 0x60100000 grlib gt stack 0x601fff00 stack pointer 0x601fff00 grlib gt cpu act 0 active cpu 0 grlib gt run RTEMS MP applications can not be run directly in GRSIM using load and run commands Instead a boot image containing several RTEMS MP applications should be created and simulated GAISLER RESEARCH 14 RCC User s Manual 3 Execution and debugging Applications built by RCC can be debugged on the TSIM LEON ERC32 simulator or on target hardware using the GRMON debug monitor LEON only Both TSIM and GRMON can be connected to the GNU debugger gdb for full source level debugging 3 1 TSIM The TSIM simulator can emulate a full ERC32 and LEON2 3 system with on chip peripherals and external memories For full details on how to use TSIM see the TSIM User s Manual Below is a simple example that shows how the hello world program is run in the simulator tsim leon3 rtems hello TSIM LEON3 SPARC simulator version 2 0 4a professional version Copy
10. ed to point to the location of the RCC directory The distribution can be installed with the following commands cd opt bunzip2 c sparc rtems 4 8 gcec 4 2 4 1 1 0 linux tar bz2 tar xf After the compiler is installed add opt rtems 4 8 bin to the executables search path and opt rtems 4 8 man to the man path GAISLER RESEARCH RCC User s Manual 1 2 3 1 Installing RTEMS source The RTEMS sources used to compile the SPARC BSPS included in RCC is prepared to be installed into opt rtems 4 8 src it can be done as follows cd opt rtems 4 8 src tar jxf path to sparc rtems 4 8 1 1 x tar bz2 1 2 3 2 Building RTEMS from sources The RTEMS libraries found in opt rtems 4 8 sparc rtems BSP can be built from the sources using the Make file found in opt rtems 4 8 src The RTEMS build environment assumes that autoconf 2 61 and automake 1 10 are installed Documentation on how to install autoconf and automake is included in respective source and an example can be found above in section 1 2 2 3 1 3 Contents of opt rtems 4 8 The created rtems directory has the following sub directories bin Executables doc RCC and GNU documentation include Host includes lib Host libraries make RTEMS make scripts man an pages for GNU tools sparc rtems Sparc target libraries src Various sources 1 4 RCC tools The following tools are included in RCC parc rtems ar parc rtems as parec rtems c parc rtems ct filt
11. izes waitstates baudrate and system clock The applications do not set these parameters themselves and thus do not need to be re linked for different board architectures The example below creates a LEON3 boot prom for a system with 1 Mbyte RAM one waitstate during write 3 waitstates for rom access and 40 MHz system clock For more details see the mkprom manual mkprom2 ramsz 1024 ramwws 1 romws 3 hello ex freq 40 hello ex Note that mkprom creates binaries for LEON2 3 and for ERC32 select processor type with the mkprom options leon3 leon2 or erc32 flag To create an SRECORD file for a prom programmer use objcopy sparc rtems objcopy 0 srec rtems hello rtems hello srec GAISLER RESEARCH 12 RCC User s Manual 2 9 Simple examples Following example compiles the famous hello world program and creates a boot prom in SRECORD format bash 2 04 sparc rtems gcc mcpu v8 msoft float 02 rtems hello c o rtems hello bash 2 04 mkprom2 leon3 freq 40 dump baud 38400 ramsize 1024 rmw rtems hello bash 2 04 sparc rtems objcopy O srec rtems hello rtems hello srec bash 2 04 Several example C programs can be found in opt rtems 4 8 src samples 2 10 Multiprocessing RTEMS supports asymmetric multiprocessing AMP Each node in a multiprocessor system executes its own program image Message passing is used for communication between nodes Shared Memory Support Driver has been ported for LEON3 to
12. ll right reserved system clock 40 0 MHz baud rate 38352 baud GAISLER RESEARCH 16 RCC User s Manual prom 512 K 2 2 ws r w sram 1024 K 1 bank s 0 0 ws r w decompressing text decompressing data starting rtems hello Hello World The application must be re loaded with the load command before it is possible to re execute it When running multiple RTEMS programs on a multiprocessing system entry point and stack pointer have to be set up individually for each CPU E g when running appl exe link address 0x40100000 on CPUO and app2 exe link address 0x40200000 on CPU1 grlib gt lo appl exe grlib gt lo app2 exe grlib gt cpu act 0 grlib gt ep 0x40100000 grlib gt stack 0x401fff00 grlib gt cpu act 1 grlib gt ep 0x40200000 grlib gt stack 0x402fff00 grlib gt cpu act 0 grlib gt run 3 3 GDB with GRMON and TSIM To perform source level debugging with gdb start TSIM or GRMON with gdb or enter the gdb command at the prompt Then attach gdb by giving command tar extended remote localhost 2222 to gdb when connect ing to GRMON or tar extended remote localhost 1234 when connecting to TSIM Note that RTEMS applica tions do not have a user defined main function as ordinary C programs Instead put a breakpoint on Init which is the default user defined start up function jupiter gt sparc rtems gdb rtems hello GNU gdb 6 7 1 Copyright C 2007 Free Software
13. onf 2 61 has been installed gt cd src tar jxf automake 1 10 1 tar bz2 mkdir automake 1 10 1 build cd automake 1 10 1 build configure prefix usr make make install lt automake 1 10 1 has been installed gt exit After installing automake and autoconf it may be required to restart the MSYS shell Once the tools required by RTEMS source tree has been installed and the MSYS shell has been restarted the installed RTEMS sources can be built manually or using the prepared Makefile available at C opt rtems 4 8 mingw src Makefile The build process is divided in four steps in the first step the make scripts are generated this step is called bootstrap The bootstrapping can be done with the make target boot as the examples shows below The bootstrap step is only needed to be rerun when adding or removing files from the source tree cd opt rtems 4 8 mingw src make bootstrap The second step configures a build environment in opt rtems 4 8 mingw src build make configure The third and fourth steps compile and install the new kernel to opt rtems 4 8 mingw sparc rtems make compile make install 1 2 3 Installing on Linux platforms The RCC directory tree is compiled to reside in the opt rtems 4 8 directory on all platforms After obtaining the bzipped tarfile with the binary distribution uncompress and untar it in a suitable location if this is not opt rtems 4 8 then a link have to be creat
14. point considerations If the targeted LEON2 3 or ERC32 processor has no floating point hardware then all applications must be compiled and linked with the msoft float option to enable floating point emulation When running the pro gram on the TSIM simulator the simulator should be started with the nfp option no floating point to disable the FPU 2 5 LEON SPARC V8 instructions Both LEON2 and LEON3 processors can be configured to implement the SPARC V8 multiply and divide instructions The RCC compiler does by default NOT issue those instructions but emulates them trough a library To enable generation of mul div instruction use the mcpu v8 switch during both compilation and linking The mcpu v8 switch improves performance on compute intensive applications and floating point emulation LEON2 3 also supports multiply and accumulate MAC The compiler will never issue those instructions they have to be coded in assembly Note that the RCC assembler and other utilities are based on a modified ver sion of GNU binutils 2 11 that supports the LEON MAC instructions 2 6 Memory organisation The resulting RTEMS executables are in elf format and has three main segments text data and bss The text segment is by default at address 0x40000000 for LEON2 3 and 0x2000000 for ERC32 followed immediately by the data and bss segments The stack starts at top of ram and extends downwards Standalone App Top Of RAM Stack Heap
15. provide MP support Since each CPU executes its own program image a memory area has to be allocated for each CPU s program image and stack This is achieved by linking each CPU s RTEMS program at the start addresses of the CPU s memory area and setting stack pointer to the top of the memory area E g for two CPU system application running on CPU 0 could run in memory area 0x40100000 0x401fffff while CPU 1 runs in memory area 0x4020000 0x402fffff Shared Memory Support Driver allocates 4 KB buffer at address 0x40000000 for mes sage passing this area can not be used for applications Each CPU requires its own set of standard peripherals such as UARTs and timers In an MP system the BSP will automatically allocate UART 1 and timer 1 to CPU 0 UART 2 and timer 2 to CPU 1 and so on Following example shows how to run RTEMS MP application on a two CPU system using GRMON CPU 0 executes image nodel exe in address space 0x6000000 Ox600fffff while CPU 1 executes image node2 exe in address space 0x60100000 0x601 fffff GRMON LEON debug monitor vl 1 22 Copyright C 2004 2005 Gaisler Research all rights reserved For latest updates go to http www gaisler com Comments or bug reports to support gaisler com grlib gt lo nodel exe section text at 0x60000000 size 143616 bytes section data at 0x60023100 size 3200 bytes total size 146816 bytes 174 4 kbit s read 852 symbols entry point 0x60000000 grlib gt lo node2 ex
16. right C 2001 Gaisler Research all rights reserved For latest updates go to http www gaisler com Comments or bug reports to tsim gaisler com using 64 bit time serial port A on stdin stdout allocated 4096 K RAM memory in 1 bank s allocated 2048 K ROM memory icache 1 4 kbytes 16 bytes line 4 kbytes total dcache 1 4 kbytes 16 bytes line 4 kbytes total section text addr 0x40000000 size 92096 bytes section data addr 0x400167c0 size 2752 bytes read 463 symbols tsim gt go resuming at 0x40000000 Hello World Program exited normally tsim gt 3 2 GRMON GRMON is used to download run and debug LEON2 3 software on target hardware For full details on how to use GRMON see the GRMON User s Manual Below is a simple example that shows how the hello world program is downloaded and run grmon u jtag GRMON LEON debug monitor v1 1 11 Copyright C 2004 2005 Gaisler Research all rights reserved For latest updates go to http www gaisler com Comments or bug reports to support gaisler com using JTAG cable on parallel port JTAG chain xc3s1500 xcf04s xcf04s Initial SANG reseed apran detected frequency 41 MHz GRLIB build version 1347 GAISLER RESEARCH 15 RCC User s Manual Component Vendor LEON3 SPARC V8 Processor Gaisler Research AHB Debug UART Gaisler Research AHB Debug JTAG TAP Gaisler Research GR Ethernet MAC Gaisler Research EON2 Memor
17. s such as make but is not required to compile on Windows plat forms the MSYS Base system can be installed to get a basic UNIX like development environment including make The RTEMS sources rely on the autoconf and automake utilities to create Makefiles The MSYS Base GAISLER RESEARCH RCC User s Manual system doesn t include the required version of autoconf and automake instead they can be compiled from sources as described below 1 2 2 1 Installing MSYS The MSYS package can be freely downloaded from http www mingw org it comes as an self extracting installation application MSYS 1 0 10 exe The following text assumes the MSYS has been successfully installed to C msys The directory where the toolchain is installed C opt rtems 4 8 mingw must be found in opt rtems 4 8 mingw from the MSYS environment this can done by adding an mount entry similar to one of the examples below to the etc fstab file in the MSYS environment C opt rtems 4 8 mingw opt rtems 4 8 mingw or C opt opt The path to the toolchain binaries C opt rtems 4 8 mingw bin must added to the MSYS PATH environment variable Below is an example of how to change the PATH variable in the MSYS shell export PATH opt rtems 4 8 mingw bin PATH The toolchain installation can be tested by compiling the samples included in the toolchain cd opt rtems 4 8 mingw src samples make 1 2 2 2 Installing RTEMS source Installing the RTEMS kernel sources are
18. sacedanealeeusisteniesqneceseenezeieonee 9 2 3 RTEMS applicallOntsa apenoten aoe 9 2 4 Floating point considerations pei svsnervennoeredne redenen deden natten dee 10 2 5 LEON SPARC V8 instructions eesesesseeeseseeesesresrrerieserssreeresressreeresressereresees 10 2 6 M mory ORS ATS ALON Gy i2e ep ctsacs vadacduceatueds avcecess contac Eia E teuten Eosi Senia 10 27 Boardssupport packages BSPS sneren tented 11 2 8 Making boot preisen be E E 11 2 9 Simpleexamples asec casts rie eniai ea E a a aai Eais ERIS 12 2 10 Multiprocessing rnsrnarenemtanderedkebenteeteedeneninn nekeer iiini airi aeiae 12 3 Execution and debugging essseseesrseseesersrresesreestrsrisrreserssrsrresresseseresressereresres 14 3 1 CUMIN aces EE E E E EE aaennenrdadiad 14 3 2 GRMON seein e E EE ee eee 14 3 3 GDB with GRMON and BSIM ice ereensrdeeinteneneet lendenen 16 3 4 Using DDD graphical front end to gdb ennen ennen ennen 17 GAISLER RESEARCH RCC User s Manual 1 Introduction 1 1 General This document describes the RTEMS LEON ERC32 GNU cross compiler system RCC Discussions are pro vided for the following topics e installing RCC e contents and directory structure of RCC e compiling and linking LEON and ERC32 RTEMS applications e usage of GRMON e debugging application with GDB RCC is a multi platform development system based on the GNU family of freely available tools with addi tional point tools developed by Cygnus OAR and G
19. uration information Device drivers support a number of devices which are automatically recognized initiated and handled by the device drivers The console driver supports one to eight GR APB UARTs The first UART is registered under name dev con sole second and third UARTs get names dev console_b and dev console_c and so on LEON3 BSP requires at least one GR APB UART The timer driver uses GR General Purpose Timer GPT The driver handles GPT timer 0 and the lowest inter rupt request line used by GPT GPT timer 0 and lowest request line should never be used by an RTEMS appli cation If an application needs to use more timers GPT should be configured to have two or more timers using separate request lines Timer 0 interrupt can not be shared with other devices or GPT timers 2 7 For more information on how to configure a system based on GRLIB see GRLIB IP Library User s Manual 2 8 Making boot proms RTEMS applications are linked to run from beginning of RAM To make a boot PROM that will run from the PROM on a standalone target use the mkprom2 utility freely available from www gaisler com The mkprom utility is documented in a separate document that is distributed together with the mkprom2 utility Mkprom will create a compressed boot image that will load the application into RAM initiate various processor regis ters and finally start the application Mkprom will set all target dependent parameters such as memory s
20. with the sparc rtems gdb debugger do ddd debugger sparc rtems gdb The required gdb commands to connect to a target can be entered in the command window See the GDB and DDD manuals for how to set the default settings If you have problems with getting DDD to run run it with check configuration to probe for necessary libraries etc DDD has many advanced features see the on line manual under the Help menu On windows cygwin hosts DDD must be started from an xterm shell First launch the cygwin X server by issuing startx in a cygwin shell and the launch DDD in the newly created xterm shell GAISLER RESEARCH
21. y Controller European Space Agency AHB APB Bridge Gaisler Research EON3 Debug Support Unit Gaisler Research Nuhorizons Spartan3 I O interfac Gaisler Research OC CAN controller Gaisler Research Generic APB UART Gaisler Research ulti processor Interrupt Ctrl Gaisler Research odular Timer Unit Gaisler Research Use command info sys to print a detailed report of attached cores grlib gt lo rtems hello section text at 0x40000000 size 92096 bytes section data at 0x400167c0 size 2752 bytes total size 94848 bytes 339 7 kbit s read 463 symbols entry point 0x40000000 grlib gt run Hello World grlib gt Note that the program was started from address 0x40000000 the default start address GRMON can also be used to program the boot PROM image created by sparc rtems mkprom into the target s flash PROM grmon grlib gt flash unlock all grmon grlib gt flash erase all Erase in progress Block 0x00000000 code 0x00800080 OK Block 0x00004000 code 0x00800080 OK grmon grlib gt flash load prom out section text at 0x0 size 54272 bytes total size 54272 bytes 93 2 kbit s read 45 symbols grmon grlib gt flash lock all When boot PROM is run i e after reset it will initialize various LEON registers unpack the application to the RAM and start the application The output on console when running hello world from PROM is shown below MkProm LEON3 boot loader v1 2 Copyright Gaisler Research a
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