I confirm shamrockman's RS232 serial port break'in.
My PMP was not good working (HDD spin up pb and PMP overheat) so I diseassembled it and bagan to try to repair it.
The serial port gave me some characters when booting. I put a ST232CN (MAX232 like chip for converting serial RS232 voltages between logic levels - ttl 5v - to RS232 levels - -12/+12) between my PMP and my computer. The RS232 is not stable (sometimes getting bad character) on my PMP but my PMP is bad working, I repeat. I user hyperterminal with these options :
PORT PARAMETERS :
================
speed : 115200 bauds
bits : 8
parity : none
stop bits : 1
flow control : none
TERMINAL EMULATION PARAMETERS :
==================== ========
terminal keys
backdel = Ctrl+H
terminal emulation type : VT100
input traduction : JIS decay
ASCII conf : box checked :
- force ASCII input in 7 bits
- automatic carriage return
PROOF OF CONCEPT :
=================
FIRMWARE BOOTLOADER :
-------------------------
+-------------------------------------+
| Welcome to the |
| rrload bootloader |
| |
| Version: v5.36-9-pmu-MP |
| PMP Version: 0005 |
| Datecode: 0400831d |
| Platform: DM270 |
| ARM clock: 94500 kHz |
| SDRAM clock: 108000 kHz |
| 64Mbyte sdram |
+-------------------------------------+
MAIN MENU
---------
1. Load [comp] from I/O port...
2. Store RAM [comp] to Flash...
3. View/Edit Params...
4. Boot Kernel/filesystem (boot_auto)
5. CmdLine Mode
6. Print memory map
f. Print flash chip information
r. Run Default Boot Cmd
E. Erase [comp] from Flash...
Which?
KERNEL BOOT OK :
------------------
----------------------------------------------------
Manufacturer's ID = 0x00BF [SST]
Device ID = 0x235B [SST39VF3201]
----------------------------------------------------
Default Cmd: boot_auto
Press <Enter> before countdown expires to intercept.
3
2
1
executing
boot_auto
Command line overrides =
Jumping to 0x0424A000
Linux version 2.4.19-uc1 (root@lyoung) (gcc version 2.96 20000110 (experimental)) #4 2004. 11. 05. (1]) 17:21:30 KST
pmp version 0xa
Processor: ARM/VLSI ARM 7 TDMI revision 0
Architecture: TMS320DM270 Development Module
PP 0 set gio dir
reserve_bootmem_core : address 04240000 below node_boot_start
Unused memory region: 04402000 - 045FFFFF (2040 Kbytes)
On node 0 totalpages: 4096
zone(0): 0 pages.
zone(1): 4096 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/rom0
Console: colour dummy device 80x30
Calibrating delay loop... 23.39 BogoMIPS
Memory: 16MB = 16MB total
Memory: 16192KB available (1088K code, 669K data, 40K init)
Dentry cache hash table entries: 2048 (order: 2, 16384 bytes)
Inode cache hash table entries: 1024 (order: 1, 8192 bytes)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 4096 (order: 2, 16384 bytes)
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Starting kswapd
powerkery ret => 0, majornum = 201
DM270 Frame Buffer Driver
Cadenux, LLC Copyright (C) 2002
/dev/fb0: SDRAM 0x02baa000-0x02c567ff
and 0x02c56800-0x02d02fff
/dev/fb1: SDRAM 0x02d03000-0x02daf7ff
/dev/fb2: SDRAM 0x026a6060-0x026fc45f
/dev/fb3: SDRAM 0x026fc460-0x0275285f
EEPROM value : 1
draw splash
width : 0x140, height 0xf0 , ptr 0x26a6060
pmp_initial_draw
value : 3 , i2cData.value : 4
REGION CODE : 2
ret => 0, majornum = 199
dm270pmp matrixkey init
ret => 0, majornum = 195
ttyS00 at 0x00030300 (irq = 12)
ttyS01 at 0x00030380 (irq = 13)
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
ES0,ES1,ES2 ide irq set
ES0,ES1,ES2 IDE GIO SET
start powerkey timer
DM270 IDE configured as device 0
dm270pmp_hddoff_time r init
IDE: waiting for drives to settle...
hda: TOSHIBA MK4004GAH, ATA DISK drive
ide0 at 0x6a00020-0x6a00027,0x6a0001c on irq 29
hda: 78126048 sectors (40001 MB), CHS=77506/16/63
Partition check:
hda: [PTBL] [4863/255/63] hda1
Blkmem copyright 1998,1999 D. Jeff Dionne
Blkmem copyright 1998 Kenneth Albanowski
Blkmem 1 disk images:
0: 4000020-423E01F [VIRTUAL 4000020-423E01F] (RO)
RAMDISK driver initialized: 16 RAM disks of 1024K size 1024 blocksize
loop: loaded (max 8 devices)
SCSI subsystem driver Revision: 1.00
ES0,ES1,ES2, PP0 USB IRQ GIO SET
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
[Gagamel] enable GIO 7 => enable EINT7
[Gagamel] start hcd_1161_init ........
Chip_id = 6123
1161-HC Detected
hc_alloc_1161 : init
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 1 port detected
==> 1161-HC Entered Suspend
1161-HC Initialization Successful
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
USB Mass Storage support registered.
FAT: bogus logical sector size 35184
FAT: bogus logical sector size 35184
VFS: Mounted root (romfs filesystem) readonly.
/bin/mount -t proc proc /proc
afraxus: flggs: 0xc0ed0000, string_flags
make ramdisk 1024
352 inodes
1024 blocks
Firstdatazone=15 (15)
Zonesize=1024
Maxsize=268966912
afraxus: flggs: 0xc0ed0000, string_flags
afraxus: flggs: 0xc0ed0000, string_flags
insmod binfmt_xflat & dspvif
Using /lib/modules/2.4.19-uc1/binfmt_xflat.o
BINFMT_XFLAT: Extended flat loader
Using /lib/modules/2.4.19-uc1/dispbuf.o
Display Driver v1.2.10, Copyright (C) 2003 Ingenient Technologies, Inc.
Using /lib/modules/2.4.19-uc1/dspvif.o
DSP/VIF Interrupt Driver v4.0.7, Copyright (C) 2003 Ingenient Technologies, Inc.
queue_reset: resetting queue...
hddfreespace check
boot2nd
unzip bmp object
Free Size : 22480
run inputserv &
SIGHDD :shared memory attached at 4669360
+++[41]+++++++ 9 ++++++++
************** 41 ********
Old SIGUSR1 sighandler at (nil)
New SIGUSR1 sighandler at 0x42254a0
Old SIGUSR2 sighandler at (nil)
New SIGUSR2 sighandler at 0x422552c
Old SIGALRM sighandler at (nil)
New SIGALRM sighandler at 0x42255bc
init: rc status 0
pmu_detect open
msgq_id = 0
err = 0
dsp_intr_open: DSP_INTR opened
queue_reset: resetting queue...
dsp_intr_ioctl: DSP_INTR Attached
err = 0
fileInfo : 4669360};
sCODE.ucLang : 2
bright level : 60
========
========
eqMode : 0
========
========
MSDOS FS: IO charset iso8859-15
0[0] 1[0] 2[0] 3[0] 4[0] 0[0] 1[0] 2[0] 3[0] 4[0] 0[0] 1[0] 2[0] 3[0] 4[0] 0[0] 1[0] 2[0] 3[0] 4[0] 0[0] 1[0] 2[0] 3[0] 4[0] Serial # = 44T32643T
=========> [020444T32643T]
set_voleme
load setup tuner info 1st is 84
load setup tuner Band is 2
Tuner Mode : 1
Tuner Band : 2
Tuner is_stereo : 0
Tuner wantFreq : 9310
Tuner chPos : 4
Tuner number of memory : 20
Tuner saved channel : 0 (9040)
Tuner saved channel : 1 (9090)
Tuner saved channel : 2 (9130)
Tuner saved channel : 3 (9260)
Tuner saved channel : 4 (9310)
Tuner saved channel : 5 (9350)
Tuner saved channel : 6 (9390)
Tuner saved channel : 7 (9410)
Tuner saved channel : 8 (9520)
Tuner saved channel : 9 (9540)
Tuner saved channel : 10 (9760)
Tuner saved channel : 11 (9780)
Tuner saved channel : 12 (9820)
Tuner saved channel : 13 (9860)
Tuner saved channel : 14 (9930)
Tuner saved channel : 15 (9950)
Tuner saved channel : 16 (10030)
Tuner saved channel : 17 (10070)
Tuner saved channel : 18 (10110)
Tuner saved channel : 19 (10230)
/mnt/Root/iRiverSys/etc/tmpAudioNaviResume.i rv error : No such file or directory
Invalid Value
Menu_PLAY_process
Menu_Mch_video_proce ss
curPos=>0
read playlistname fail
strListName=>Jan0106 3227.m3u
listNum=>0
MarkMode=>FALSE
curPath=>/mnt/Root/files/
WSZ:0, WSP:0, WEP:-1, WCP:-1, CP:-1
Menu_Mch_navi_proces s
Sincerely,
pmp.breker,
pmp.breaker AT gmail.com