Interfacing a Hard Drive to an M5249C3 Board Page 1. Freescale
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1. You can now manually set up the board s IP address by gt ifconfig ethO 192 168 0 2 NOTE If a cross cable connects the M5249C3 to a network you can retrieve an IP address through DHCP The uClinux default setting enables the DHCP daemon You can try to ping the host ping 192 168 0 1 Press CTRL C to stop the ping process gt ifconfig ethO 192 168 0 2 lt ping 192 168 0 1 PING 192 168 0 1 192 168 0 1 59 data bytes 64 bytes from 192 168 0 1 icmp_seq 0 ttl 64 time 5 9 ms 64 bytes from 192 168 0 1 icmp_seq 1 ttl 64 time 2 9 ms 64 bytes from 192 168 0 1 icmp_seq 2 ttl 64 time 2 9 ms 64 bytes from 192 168 0 1 icmp_seq 3 ttl 64 time 2 9 ms 64 bytes from 192 168 0 1 icmp_seq 4 ttl 64 time 2 9 ms 192 168 0 1 ping statistics 5 packets transmitted 5 packets received 0 packet loss round trip min avg max 2 9 3 5 5 89 ms 3 IDE Interface 3 1 IDE Hardware J9 is a standard 2X20 IDE connector These signals are involved in IDE connection Interfacing a Hard Drive to an M5249C3 Board Rev 0 12 Freescale Semiconductor IDE Interface Buffer D 31 16 BUFENB2 Figure 3 IDE Connection to M5249C3 IDE Signals Description BufEn2 b Active low external buffer enable This enable is inactive when CSO is active and should enable a buffer for peripheral devices except boot ROM IDE Iordy Active high ready indication from IDE device to MCF5249 CS2 IDE DIOR gpio2. D Jeff Dionne On node 0 totalpages 2048 zone 0 0 pages zone 1 2048 pages zone 2 0 pages Kernel command line Calibrating delay loop 92 56 BogoMIPS Memory available 5992k 8192k RAM Ok 0k ROM 850k kernel code 229k data kmem create Forcing size word alignment mm struct kmem create Forcing size word alignment filp Dentry cache hash table entries 1024 order 1 8192 bytes Inode cache hash table entries 512 order 0 4096 bytes kmem create Forcing size word alignment inode cache Mount cache hash table entries 512 order 0 4096 bytes kmem create Forcing size word alignment bdev cache kmem create Forcing size word alignment cdev cache kmem create Forcing size word alignment kiobuf Buffer cache hash table entries 1024 order 0 4096 bytes Page cache hash table entries 2048 order 1 8192 bytes POSIX conformance testing by UNIFIX Linux NET4 0 for Linux 2 4 Based upon Swansea University Computer Society NET3 039 nitializing RT netlink socket Starting kswapd kmem create Forcing size word alignment file lock cache kmem create Forcing size word alignment nfs read data kmem create Forcing size word alignment nfs write data ColdFire internal UART serial driver version 1 00 ttyS0 at 0x100001c0 73 is a builtin ColdFire UART ttySl at 0x10000200 74 is a builtin ColdFire UART irq irq M5249AUDIO C Copyright 2002 Greg Ungerer gerg snapgear com M5249AUDI
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4. Esc to exit lt gt for Help Legend built in excluded M module lt gt module capable Enhanced IDE MFM RLL disk cdron tape floppy suppor Please see Documentation ide txt for help info on IDE drives se old disk only driver on primary interface upport for SATA deprecated conflicts with libata SATA driver nclude IDE ATA 2 DISK support se multi mode by default uto Geometry Resizing support nclude IDE ATAPI CDROM support nclude IDE ATAPI TAPE support nclude IDE ATAPI FLOPPY support eed Need ed teed ed m r Exit Help Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor Building the Application 12 Scroll down the menu Select uClinux IDE interface support root localhost home fabio uClinux dist 5 x v File Edit View Terminal Go Help Arrow keys navigate the menu Enter selects submenus gt Highlighted letters are hotkeys Pressing Y includes N excludes M modularizes features Press Esc Esc to exit lt gt for Help Legend built in excluded M module lt gt module capable nclude IDE ATAPI CDROM support nclude IDE ATAPI TAPE support nclude IDE ATAPI FLOPPY support DE Taskfile Access IDE chipset support bugfixes rs MD640 chipset bugfix support Clinux IDE interface support DE interface on the CyberGuard SnapGear ESS710 ther I
5. for saving new kernel configuration Create a folder called tftboot that contains the generated image bin file As root the su command enters in root mode gt gt mkdir tftpboot gt gt chmod 777 tftpboot Returning to user mode command is su user gt gt make dep make After a successful build process an image bin file must have been placed in the tftpboot folder The image bin file combines the kernel and root file systems Downloading the image to the M5249C3 1 2 Connect the serial cable between the host PC and the M5249C3 In the host run a terminal emulator such as minicon Set it to a baud rate of 19200 bps 8 bits no parity no software and no hardware flow control Attach the hard disk drive formatted as FAT32 to the J8 IDE connector of the M5249C3 4 Power up the M5249C3 The following messages should appear Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor Building the Application Hard Reset DRAM Size 8M ColdFire MCF5249 EVS Firmware v3a 1b 1c Build 4 on Mar 04 2003 15 38 14 Enter help for help dBuG gt Refer to the M5249C3 User Manual for a detailed list of commands the dBug monitor supports Ensure the tftp service is enabled and that the tftpboot folder can be exported The tftp package is not installed by default in RedHat 9 0 and other Linux distributions In RedHat 9 0 the configuration file for the tftp
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7. server is etc xinetd d tftp listed below service tftp disable no socket_type dgram protocol udp wait yes user root server usr sbin in tftpd Server args s tftpboot per source 11 cps 100 2 flags IPv4 Insert a crossover cable between the host PC and the M5249C3 board NOTE You can use a normal cable to connect the PC and the M5249C3 in a network By default the DHCP application is enabled for the M5249C3 and the board can retrieve an IP address if the network has DHCP server capabilities In dBug prompt type show dBug gt set server 192 168 0 1 dBug gt set client 192 168 0 2 Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor 9 LE NEC CELXZXA Oo ELJEEZ Building the Application In the host ifconfig ethO 192 168 0 1 dBug dn i image bin This command requests a TFTP transfer and sends the image bin file located at tftpboot folder from the host The image transferred through TFTP is now placed in the external SDRAM of the M5249C3 To execute the uClinux kernel jump to its initial location 0x20000 The command in dBug is dBug go 20000 The kernel boot message should start Linux version 2 4 31 uc0 20010318 from http fi6 uClinux COLDFIRE m5249 COLDFIRE port done by Greg Ungerer root localhost gcc version 2 95 3 20010315 release ColdFire patches gerg snapgear com Flat model support C 1998 1999 Kenneth Albanowski
8. 13 and IDE DIOW gpio14 These signals go active during CS2 cycles IDE DIOR can be programmed to go active on read and write cycles or to go active on read cycles only and IDE DIOW on write cycles only IDE DIOR has features identical to the normal CS2 and can be programmed for an address location and for masking port size and burst capability indication wait state generation and internal external termination You can also enable IDE DIOR and IDE DIOW to access an IDE drive or another AT bus peripheral This allows you to insert more than 16 wait states on IDE DIOR and IDE DIOW and have dynamic cycle termination using the IORDY signal Detailed schematics shown below from M5249C3 User Manual Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor 13 IDE Interface 3 3 To set up the IDE interface 1 RAEPESSS EFEFEF a an D Figure 4 Schematics from M5249C3 IDE Register Programming Program chip select 2 registers inside the chip select modules CSAR2 CSMR2 and CSCR2 CSAR2 CSMR2 must be programmed to map the IDE interface in the correct part of the ColdFire address map For example in the M5249C3 we have CS2 mapped at address 0x50000000 CSCR 2 bit fields must be programmed as follows AA 0 TA signal generated by IDEconfig2 register logic WS 3 0 not relevant PS 1 0 10 16 bit port size BSTR BSTW 00 no burst read write cycles BEM
9. DE chipset support Support for IDE Raid controllers EXPERIMENTAL Exit Help 13 Exit 14 Exit 15 Go to file systems 16 Under the file systems menu select VFAT Windows 95 fs support root localhost home fabio uClinux dist File Edit View Terminal Go Help Arrow keys navigate the menu lt Enter gt selects submenus gt Highlighted letters are hotkeys Pressing lt Y gt includes lt N gt excludes lt M gt modularizes features Press lt Esc gt lt Esc gt to exit lt gt for Help Legend built in excluded lt M gt module lt gt module capable FS file system support EXPERIMENTAL xt3 journalling file system support OS FAT fs support M DOS fs support FS file system support read only EXPERIMENTAL ompressed ROM file system support irtual memory file system support former shm fs SO 9660 CDROM file system support FS filesystem support li N lt Exit gt lt Help gt 17 Scroll down the file systems menu Go to partition types option Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor 7 err Building the Application 18 19 20 21 22 23 root localhost home fabio uClinux dist File Edit View Terminal Go Help dvanced partition selection Under the partition types menu select advanced partition selection Exit Exit Exit Select Yes
10. Freescale Semiconductor Document Number AN3384 Application Note Rev 0 12 2006 Interfacing a Hard Drive to an M5249C3 Board by Fabio Estevam Latin America 1 Introduction Contents 1 INTOAUGHON 22s cde cdcesakdadexdeadiaddweeeaneas 1 In the embedded scenario it is popular to employ 1 1 Processor Description 005 2 Ie Evaluation BOAR ur cce tor P x eee hip d 3 hard disk drives HDDs for many applications such as Bulbine ihe And eoe oen crus media players network attached storage NAS TV 2 1 System Requirements u un aonne 3 content recorders etc Many HDD models are available p e Installation Process sssssssese gre in small footprint high density and low power suited a IBEBHTNEE o o o P for embedded applications The MCF5249 MCF5250 3 2 IDE Signals Description 5 13 and MCF5251 have an integrated IDE block that allows e E b pura fagi tembdEpde Les nisani ie o i helate MES M O1 310 desque mq them to interface to standard HDDs with minimum Be vidis iq DM RUNDEN 16 external hardware 4 Conclusion isses eee 17 5 icc PPP 17 This application note shows how to interface an HDD to an M5249C3 running uClinux IDE as the operational system Installing uClinux the appropriate toolchain and how to use uClinux support for HDDs and how to configure the VFAT file system are also explained After reading this application note you should be a
11. O DMA channel 0 irq 120 Bad boy audio DMA at 0x0007fe4c called request irq without a dev id kmem create Forcing size word alignment blkdev requests SMSC LAN91C111 Driver v2 0 Linux Kernel 2 4 Support for Odd Byte pramod bhardwaj8 eth0 SMC91CIIxFD rev 1 00 c 52 49 c3 04 09 24 01 by Pramod Bhardwaj at 0xe0000300 IRQ 166 MEMSIZE 8192b NOWAIT 0 ADDR SLIP version 0 8 4 NET3 019 NEWTTY dynamic channels max 256 CSLIP code copyright 1989 Regents of the University of California Interfacing a Hard Drive to an M5249C3 Board Rev 0 10 Freescale Semiconductor Building the Application Blkmem copyright 1998 1999 D Jeff Dionne Blkmem copyright 1998 Kenneth Albanowski Blkmem 1 disk images 0 12E084 20BC83 VIRTUAL 12E084 20BC83 RO lt ROMFS gt RAMDISK driver initialized 16 RAM disks of 4096K size 1024 blocksize PPP generic driver version 2 4 2 PPP MPPE compression module registered Uniform Multi Platform E IDE driver Revision 7 00beta4 2 4 ide Assuming 50MHz system bus speed for PIO modes override with idebus xx hda probing with STATUS 0x50 instead of ALTSTATUS 0x7f hda QUANTUM FIREBALL ST2 5A ATA DISK drive hdb probing with STATUS 0x00 instead of ALTSTATUS 0x7f hdb probing with STATUS 0x00 instead of ALTSTATUS 0x7f ideO at 0x50000020 on irq 165 hda attached ide disk driver hda 5008752 sectors 2564 MB w 81KiB Cache CHS 4969 16 63 Partition check hda PTBL 621 128 63 hd
12. al NET4 Linux TCP IP 1 0 for NET4 0 IP Protocols ICMP UDP TCP kmem create Forcing size word alignment ip dst cache IP routing cache hash table of 512 buckets 4Kbytes TCP Hash tables configured established 512 bind 512 NET4 Unix domain sockets 1 0 SMP for Linux NET4 0 FAT bogus logical sector size 49376 VFS Mounted root romfs filesystem readonly Freeing unused kernel memory 28k freed 0x112000 0x118000 Shell invoked to run file etc rc Command hostname uClinux Command bin expand etc ramfs img dev raml Command mount t proc proc proc mount bb xasprintf Unknown error 0 pid 9 failed 256 Command mount t ext2 dev raml var Command mkdir var tmp Command mkdir var log Command mkdir var run Command mkdir var lock Command mkdir var empty Command ifconfig lo 127 0 0 1 Command route add net 127 0 0 0 netmask 255 0 0 0 lo Command dhcpcd p a ethO amp 13 Command cat etc motd Welcome to Eod do da d dz E ped Ibo ye Al dod INCAS N d EE ST PAIN IN PN For further information check http www uclinux org Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor 11 IDE Interface Command Execution Finished Exiting Sash command shell version 1 1 1 gt Highlighted above are the messages related to the IDE detection The IDE vendor and model are shown as well as the number of sectors and disk size
13. ble to install the uClinux package and toolchain and configure the kernel for a M5249C3 board enable IDE support in uClinux for the M5249C3 build an uClinux image and download it to a M5249C3 board and access the hard disk content from the M5249C3 board ey freescale Freescale Semiconductor Inc 2006 All rights reserved e semiconductor Introduction 1 1 Processor Description The MCF5249 is used in this application note ColdFire V2 Addr Gen Fetch Instr Buf Dec amp Sel Op A Gen amp Ex Figure 1 MCF5249 Block Diagram Processor description and key features The MCF5249 comes in two packages 144 pin QFP Runs up to 120 MHz 160 pin BGA Runs up to 140 MHz Enhanced multiply and accumulate EMAC unit Allows the MCF5249 to perform digital signal processing algorithms such as vocoders used in VoIP applications G 729 G 723 MP3 WMA decoder and encoding Large amount of internal SRAM 96 KB on the MCF5249 Necessary for real time intensive tasks such as an MP3 decoder because critical time data and programs can be placed in internal SRAM which has a faster access time than external SDRAM Low power consumption Suitable for portable devices 1 3 mW MHz e IDE interface Allows hard disk drive interface with minimum use of external devices e Background debug module BDM Flexible debug interface allows external flash programming e Serial audio interfa
14. ces Support I2S and EIAJ standards and SPDIF IEC958 digital audio interfaces e SD and MMC interfaces Interfacing a Hard Drive to an M5249C3 Board Rev 0 2 Freescale Semiconductor 1 2 Building the Application Evaluation Board The M5249C3 is the evaluation board for the MCF5249 and is the hardware referred to throughout this document Figure 2 M5249C3 Board M5249C3 main features 2 8 MB of SDRAM 2 MB of flash External 10 100 ethernet controller Two serial ports One for monitor firmware output one for general purpose Debug module interface connector BDM Used with source level debuggers running on PCs IDE connector Or glueless hard disk connection Stereo audio inputs and stereo audio input jacks Pre flashed dBug monitor firmware Allows access to CPU registers memory content and it downloads applications to the target from the serial port and over the ethernet Building the Application The following sections show how to set up the application s working environment for the application and how to build and download a uClinux image with IDE and telnet support to the M5249C3 2 1 System Requirements M5249C3 board a serial cable and crossover cable Hard disk drive with a 40 pin standard IDE cable formatted as FAT32 Linux host computer The distribution used in the tests was RedHat 9 0 but you can run in different Linux distributions In the Linux host you must enable network fi
15. e Select kernel linux 2 4 x as the kernel version and uC lib as Libc version Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor Building the Application 8 Goto ATA IDE MFM RLL support root localhost home fabio uClinux dist 5 File Edit View Terminal Go Help Arrow keys navigate the menu lt Enter gt selects submenus gt Highlighted letters are hotkeys Pressing lt Y gt includes lt N gt excludes lt M gt modularizes features Press lt Esc gt lt Esc gt to exit lt gt for Help Legend built in excluded lt M gt module lt gt module capable ME arallel port support gt lug and Play configuration gt lock devices gt N tworking options gt elephony Support CSI support gt EEE 1394 FireWire support EXPERIMENTAL gt 20 device support gt N twork device support gt ie Aao se 9 Select ATA IDE MFM RLL Go to IDE ATA and ATAPI block devices 10 Select enhanced IDE MFM RLL disk cdrom tape floppy support 11 Select include IDE ATA 2 DISK support V root localhost home fabio uClinux dist 5 File Edit View Terminal Go Help Arrow keys navigate the menu Enter selects submenus gt Highlighted letters are hotkeys Pressing Y includes N excludes M modularizes features Press Esc
16. ge for the M5249C3 then download it to the board 1 First configure the kernel and target options Go to uClinux dist directory and then gt gt cd home user uClinux dist gt gt make menuconfig 2 Goto Vendor Product Selection then Select The following window should appear root localhost home fabio uClinux dist File Edit View Terminal Go Help endor Product Selection Interfacing a Hard Drive to an M5249C3 Board Rev 0 4 Freescale Semiconductor 3 Select the vendor and M5249C3 as the target Exit Building the Application root localhost home fabio uClinux dist File Edit View Terminal Go Help Select the Vendor you wish to targe endor Select the Product you wish to target M5249C3 Products EB 2 lt Exit gt lt Help gt Go to Kernel Library Default Selection Mark customize kernel settings by hitting the backspace key Exit MOOR Select Yes to save the kernel configuration Midd root localhost home fabio uClinux dist File Edit View Terminal Go Help Do you wish to save your new kernel configuration lt Yes lt No gt BTE Arrow keys navigate the menu Enter selects submenus gt Highlighted letters are hotkeys Pressing Y includes N excludes M modularizes features Press lt Esc gt lt Esc gt to exit lt gt for Help Legend built in excluded M module lt gt module capabl
17. ing tba 50 waitCount2 waitCount2 must be set to 4 5 waitCount2 1 5 T tA tio To meet this timing tA 35 waitCount2 waitCount2 must be set to 3 4 3T gt tbuf tdel tR tdel time difference between path from IORDY and from tR 0 read data Read data in device must be valid 3 clocks after IORDY going high cs2post gt t9 To meet this timing typical 5 19 cs post value for cs2post is 10 nS 3 4 IDE Related Files in uClinux As shown below the CS2 which acts as the IDE chip select is initially set up at uClinux dist linux 2 4 x arch m68knommu platform 5249 FREESCALE crtO ram S file as shown below Setup CS2 for IDE interface ay move l 00000 move l move l 0x50000000 d0 CS2 mapped d0 0x98 a0 0x001f0001 d0 a0 0x0080 d0 Oxa2 CS2 16bit TA 0x00107020 d0 LF d0 Oxl8c al 0x000c0400 d0 dO 0x190 al IDEconfigl IDEconfig2 Find the IDE driver at uClinux dist linux 2 4 x drivers ide 3 5 Mount Process at CS2 size of 1MB 4 5 By Before the M5249C3 board can access the hard disk file system send the following command in uClinux gt mount t vfat dev hdal mnt Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor Conclusion After this command HDD content is mounted at the mnt folder cd mnt If you want the IDE mount process to be executed auto
18. le system NFS and trivial file transfer protocol TFTP services This varies among distributions but is beyond the scope of this document to teach A terminal emulator such as minicon is necessary for communicating with the M5249C3 board Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor 3 eee Building the Application 2 2 uClinux Installation Process Installing uClinux on the host machine Download the latest uClinux distribution http www uclinux org pub uClinux dist This document was written when the latest version was uClinux dist 20051110 The current version is uClinux dist 20060803 The former is a full source package containing kernel 2 0 2 4 and 2 6 libraries and application code 1 Download the toolchain for ColdFire products http www uclinux org pub uClinux m68k elf tools m68k elf tools 20030314 is used in this application note It contains the cross compiler and assembler for ColdFire targets 2 Asroot install the toolchain in the Linux Host sh m68k elf tools 20030314 Log in as a standard user RO Copy the uClinux source package file uClinux dist 200511110 tar gz into home user in my case my name follows home fabio 5 Go to home user directory and extract tar xzvf uClinux dist 200511110 tar gz 2 2 1 Generating an uClinux Image and Downloading It to the Target After the toolchain and uClinux distribution are installed in the host computer build an ima
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20. matically at startup append the following line mount t vfat dev hdal mnt to the end of this file uClinux dist vendors Generic big rc 4 Conclusion This application note showed how to interface an HDD with an M5249C3 evaluation board running uClinux The hardware interface is straightforward due to a built in MCF5249 IDE controller the IDE driver and file system support The file system support is available in uClinux for the M5249C3 board therefore you can add your own application that needs an HDD interface 5 References 1 MCF5249 ColdFire Integrated Microprocessor User Manual 2 M5249C3 Reference Board User Manual 3 MP3 Decoder on uClinux Demo User Manual Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor 17 THIS PAGE IS INTENTIONALLY BLANK Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor 19 How to Reach Us Home Page www freescale com E mail support freescale com USA Europe or Locations Not Listed Freescale Semiconductor Technical Information Center CH370 1300 N Alma School Road Chandler Arizona 85224 1 800 521 6274 or 1 480 768 2130 support freescale com Europe Middle East and Africa Freescale Halbleiter Deutschland GmbH Technical Information Center Schatzbogen 7 81829 Muenchen Germany 44 1296 380 456 English 46 8 52200080
21. not relevant Interfacing a Hard Drive to an M5249C3 Board Rev 0 Freescale Semiconductor IDE Interface 2 Program the IDE configl register Relevant fields are cs2pre cs2post bufenlcs2en bufen2cs2en The values required for the buffer enable signals bufenlcs2en and bufen2cs2en depend on the hardware configuration If two buffers are used in cascade both bits must be 1 Fields cs2pre and cs2post are relevant and explained in Table 1 BCLK Address tuf t1 t2 bufenb1 bufenb2 DIOR DIOW cs2pre E IORDY TA IR t5a Read data X waitCount2 3 5 T data in tima Figure 5 IDE Timing Diagram Table 1 IDE Related Timing Signals ATA Timing Symbol ATA4 Value Controlled by Setting Equation Approximately Comments cs2pre gt t1 tbuf tbus is external buffer enable time cs2pre must be set high enough to provide t 25 cs2pre sufficient address to DIOR DIOW setup time Typical cs2pre values range from 3 to 5 SCLK clocks waitCount2 4 T gt t2 t2 is the DIOR DIOW low 2 70 waitCount2 period To meet 70 ns t2 Interfacing a Hard Drive to an M5249C3 Board Rev 0 period waitCcount2 must be set to 3 Freescale Semiconductor 15 IDE Interface Table 1 IDE Related Timing Signals continued ATA Timing Symbol ATAA Value Controlled by Setting Equation Approximately Comments waitCount2 1 5 T tA tio To meet this tim
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