; -------------------------------------------------------------------------------- ; @Title: Linux Demo for TRACE32 OS Awareness on the phyCORE-i.MX350 ; @Description: ; This batchfile demonstrates the use of the OS Awareness for Linux ; The example is generated for the phyCORE-i.MX350 board using an ICD. ; It will NOT run on any other board, but may be used as a template ; for others. ; Linux is downloaded to the board via ICD; ; the root filesystem is taken from Flash ; @Keywords: awareness, imx3*, Linux, phycore, i.mx3* ; @Author: DIE ; @Board: phyCORE-i.MX350 ; @Chip: IMX35 ; @Copyright: (C) 1989-2019 Lauterbach GmbH, licensed for use with TRACE32(R) only ; -------------------------------------------------------------------------------- ; $Id: imx35_linux.cmm 15223 2019-11-05 16:29:45Z bschroefel $ ; Starting Linux example with TRACE32: ; - Connect STRAIGHT modem cable to Serial 1 (upper jack) ; - 115200 baud, 8/N/1, no(!) handshake ; - Start TRACE32 ; - Switch on the board ; - TRACE32: "do linux" ; - transfer "helloworld" via ftp to /tmp on target ; - terminal: start "/tmp/helloworld" LOCAL &ka_path &awareness SCREEN.ALways ; permanent update for internal terminal window ; screen.on ; if you use external terminal ; Debugger Reset WinPAGE.RESet AREA.RESet WinPOS 0. 25. 75. 8. 0. 0. W000 AREA.view PRINT "resetting..." RESet ; Initializing Debugger PRINT "initializing..." SYStem.RESet SYStem.CPU IMX35 SYStem.JtagClock RTCK SYStem.CONFIG.L2CACHE.Base 0x30000000 SYStem.Option ResBreak OFF ; hardware dependent (see manual) SYStem.Option DACR ON ; give Debugger global write permissions TrOnchip.Set DABORT OFF ; used by Linux for page miss! TrOnchip.Set PABORT OFF ; used by Linux for page miss! TrOnchip.Set UNDEF OFF ; my be used by Linux for FPU detection SYStem.Option MMUSPACES ON ; enable space ids to virtual addresses SYStem.Up SETUP.IMASKASM ON ; lock interrupts while single stepping ; Open serial terminal window on COM1 DO ~~/demo/etc/terminal/serial/term.cmm COM1 115200. ; Target Setup: initialize DRAM controller and peripherals ; Either let the boot monitor setup the board Go PRINT "target setup..." WAIT 2.s Break ; or use the debugger to initialize it ;print "target setup..." ;do init_phycore_imx35 ; do basic setup ; Load the Linux kernel ; If you are using a flashed kernel, or if you're loading ; your kernel via TFTP, use the boot monitor to do so. ; Use the next lines (loading the kernel, setting registers ; and boot parameters) only to load the kernel into ; RAM using the debugger. ; vmlinux starts physically at RAM start (=0x80000000) + 0x8000 ; We have to adjust it from the virtual start address at the label ; "stext" from the System.map ("nm vmlinux | sort") ; i.e.: Data.LOAD.Elf vmlinux - PRINT "loading Linux kernel..." Data.LOAD.Elf vmlinux 0x80008000-0xc0008000 ; IMPORTANT!!! ; If an i.MX series CPU goes into WFI mode with JTAG enabled, ; no interrupts are accepted any more. So we have to disable ; the WFI mode. Either remove the WFI call in arch/mm/proc-v6.S ; or patch the WFI call with the debugger: Data.Assemble cpu_v6_do_idle+8 nop Register.RESet ; Set PC on start address of image Register.Set PC 0x80008000 ; Set machine type in R1; see arch/arm/tools/mach-types Register.Set R1 2072. ; PCM043 ; Set parameter tags for linux boot ; It contains the boot command line, too! (see script) DO imx35_atag_list ; Loading initial ram disk (initrd) ; Use the next lines only, if you want to use an initrd, ; and if you want to download this with the debugger. ; Load rom file system image into ram disk ; The load address must be passed as command line option ; (see atag-list.cmm) ; In this example, we don't use an initrd (root from Flash) ;print "loading ram disk..." ;Data.LOAD.Binary ramdisk.image.gz 0x80800000 /noclear /nosymbol ; Load the Linux kernel symbols into the debugger ; use /strippart to map source paths, if necessary PRINT "loading Linux kernel symbols..." Data.LOAD.Elf vmlinux /NoCODE /StripPART 4 sYmbol.SourcePATH.Set S:\linux\linux ; Open a Code Window -- we like to see something WinPOS 0. 0. 75. 20. List.auto Go start_kernel /Onchip WAIT !STATE.RUN() ; Declare the MMU format to the debugger ; - table format is "LINUX" ; - table base address is at label "swapper_pg_dir" ; - kernel address translation ; Map the virtual kernel symbols to physical addresses to give ; the debugger access to it before CPU MMU is initialized PRINT "initializing debugger MMU..." MMU.FORMAT LINUX swapper_pg_dir 0xc0000000--0xc7ffffff 0x80000000 ; prepare debugger translation TRANSlation.COMMON 0xbf000000--0xffffffff ; common area for kernel and processes TRANSlation.TableWalk ON ; debugger uses a table walk to decode virtual addresses TRANSlation.ON ; switch on debugger(!) address translation ; Initialize Linux Awareness ; Note that the Linux awareness needs the kernel symbols to work ; check linux major version IF STRing.SCAN(Data.STRing(linux_banner), "Linux version 2.", 0)==0 ( &ka_path="~~/demo/arm/kernel/linux/linux-2.x" &awareness="linux.t32" ) ELSE ( &ka_path="~~/demo/arm/kernel/linux/linux-3.x" &awareness="linux3.t32" ) PRINT "initializing RTOS support..." TASK.CONFIG &ka_path/&awareness ; loads Linux awareness MENU.ReProgram &ka_path/linux ; loads Linux menu ; Group kernel area to be displayed with red bar GROUP.Create "kernel" 0xc0000000--0xffffffff /RED ; Ok, we're done, let's start Linux wintop TERM.view ; set terminal window to front Go PRINT "starting Linux... (please wait)" WAIT 10.s Break PRINT "done." ; done with loading and starting Linux ; -------------------------------------------------------------------------------- ; Application Debugging ; e.g. "hello" ; -------------------------------------------------------------------------------- ; activate autoloader for processes: TASK.sYmbol.Option AutoLoad Process PRINT "please log in and start 'helloworld'" ; script based ; using the script based application debugging ; gives more control over the single commands ; see file "app_debug.cmm" DO ../app_debug helloworld ; process watch system ; the process watch system automates the actions ; for application debugging ;WINPOS 55. 24. 40. 4. ;TASK.Watch.View "helloworld" ;Go ENDDO