hello, i have a device Zyxel p2812hnu-f3, bassed on cpu Lantiq vr208, who seems to be mips bassed.
it have 2 flashes :
one MX29LV640DB NOR-flash
one SAMSUNG 128MB NAND-flash
tp4-TRST
tp6-TDI
tp7-TDO
tp10-TMS
tp11-TCK
tp12-SRST
CPU-TYPE
system type : VR9
processor : 0
cpu model : MIPS 34K V5.5
BogoMIPS : 332.59
wait instruction : yes
microsecond timers : yes
tlb_entries : 16
extra interrupt vector : yes
hardware watchpoint : yes
ASEs implemented : mips16 dsp mt
VCED exceptions : not available
VCEI exceptions : not available
ZJTAG
root@HOME-PC:~/Downloads/zjtag.source_1.7/src# ./zjtag -probeonly /cable:1 /skipdetect
==============================================
zJTAG EJTAG Debrick Utility v1.7 R4
==============================================
cableid=1, cabletype=1
Detected IR chain length = 5
Probing bus ... Done
Detected IR chain Length is 5 bits
CPU assumed running under LITTLE endian
CPU Chip ID: 00000000000000000001000110000011 (00001183)
CPU Manufacturer :Unknown(ID=0X182)
CPU Device ID :0001
CPU Revision :1
*** CHIP DETECTION OVERRIDDEN ***
- EJTAG IMPCODE ....... : 00000000000000000001000110000011 (00001183)
- EJTAG Version ....... : 1 or 2.0
- EJTAG DMA Support ... : Yes
- EJTAG Implementation flags: R4k MIPS64
Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Done
Halting Processor ... <Processor did NOT enter Debug Mode!> ... Done
Clearing Watchdog ... Done
Loading CPU Configuration Code ... Skipped
Probing Flash at Address: 0x1FC00000 ...
Detected Chip ID (VenID:DevID = 0083 : 0000)
*** Unknown or NO Flash Chip Detected ***
*** REQUESTED OPERATION IS COMPLETE ***
TJTAG
root@HOME-PC:~/Downloads/linux32# ./tjtag3 -probeonly /cable:dlc5 /skipdetect
================================================
EJTAG Debrick Utility v3.0.2.1 Tornado-MOD
================================================
Detected IR chain length = 10
Number of device(s) = 2
IDCODE for device 1 is 0x00001183
IDCODE for device 2 is 0x00001183
Probing bus ... instruction_length 0
Done
Instruction Length set to 0
CPU Chip ID: 00000000000000000000000000001000 (00000008)
*** CHIP DETECTION OVERRIDDEN ***
- EJTAG IMPCODE ....... : 00000000000000000000000000001000 (00000008)
- EJTAG Version ....... : 1 or 2.0
- EJTAG DMA Support ... : Yes
- EJTAG Implementation flags: R4k MIPS32
Intial value of Control register is 0000000C
Intial value of status register is 0000006F
01101111 (0000006F)
Status bit 7 Busy Inverted pin 11 = 1
Status bit 6 *Ack pin 10 = 1
Status bit 5 Paper-out pin 12 = 1
Status bit 4 Select pin 13 = 0
Status bit 3 *Error pin 15 = 1
* means low = true, e.g., *Error
VCC connected
values of Control register after init 0x0000000C
value of status register after init 0x0000006F
system reset complete
Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Done
Halting Processor ... <Processor did NOT enter Debug Mode!> ... Done
Init PrAcc ... Skipped
Clearing Watchdog ... Done
Enter Flash Probe
Probing Flash at (Flash Window: 0x1fc00000) ...
Enter SPI Flash Probe
Enter SPI Flash Probe
Enter SPI Flash Probe
Enter SPI Flash Probe
Done
*** Unknown or NO Flash Chip Detected ***
*** REQUESTED OPERATION IS COMPLETE ***
THanks k