Keith Hui wrote:
At this point I'm mostly interested in just identifying the flash chip without disassembling the laptop, although I'm ready for that if necessary.
Try: flashrom -p internal:force=laptop_I_want_a_brick
flashrom is overly defensive on Thinkpads, where the Renesas EC always has it's own flash.
However, I do need to find a USB-based chip programmer that can do parallel, FWH and SPI.
No such thing in cheap. You can get a GALEP-5, which supports an incredible range of devices, but which also costs >= 600 USD.
I want to make an open hardware+firmware design, but so far I haven't made it beyond the USB protocol. http://git.stuge.se/?p=qiprog.git
//Peter
Am 16.09.2012 05:00 schrieb Peter Stuge:
Keith Hui wrote:
However, I do need to find a USB-based chip programmer that can do parallel, FWH and SPI.
No such thing in cheap. You can get a GALEP-5, which supports an incredible range of devices, but which also costs >= 600 USD.
I want to make an open hardware+firmware design, but so far I haven't made it beyond the USB protocol. http://git.stuge.se/?p=qiprog.git
As a cheap starting point you could wire up a DIP8 socket and a PLCC32 socket to a Minimus USB (Atmega32U2) device. Those things are available for ~12 USD, and they have enough GPIOs to drive LPC/FWH/SPI with ease, and they speak native USB instead of USB-serial emulation. There's even some code available for LPC/SPI on Atmega processors (originally written for serprog usage) and you could reuse that easily.
IMHO that would qualify as cheap and readily available. You have to solder the sockets and write the code yourself, though.
Regards, Carl-Daniel
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Carl-Daniel Hailfinger -
Peter Stuge