I am new to the list, I recently bought a set-top-box (Netbox 8160)
which uses a SMP8635 MIPS processor.
The original fimware is a disaster and for fun I want to try to build my
own linux based firmware for this set-to-box.
I am absolutely not afraid, because I do a lot of embedded linux at
office (on ARM9 arch and Blackfin arch).
The board of this set-top-box is pretty simple, there is the SMP8635
processor, 256MB of DDRAM, 16 MB of NOR flash, mini pci with atheros
wifi card, ethernet MII phy, and 2 DVB-T tuners (maybe USB2 or PCI, for
now I don't now).
The SMP8635 processor comes from Sigma Design and I found on its FTP
site a 2.6.15 kernel with associated patches for the SMP863x processors
My problem is that they doesn't provide the datasheet alone, visibly
they provide it with the SMP8634 developement board
And to begin to developp on this board, I need at least to know where is
located the JTAG. It will be the starting point to try to access the NOR
flash to backup the original firmware, and play with the board.
I don't see any SPI eeprom/flash thus I think even the boot loader is
located the 16MB nor flash, so I thing at startup the processor directly
try to execute code from the NOR, maybe at adress 0x0.
Is someone has some information on this processor ? Or maybe the
datasheet ? With the datasheet I will be have to locate the JTAG pin :)
Thank you for reading my message, and sorry because my english is not
I wish you a good day
Registered Linux User #332632