Re: [flashrom] flashrom on PowerPC

[Peter Lemenkov]

2011/7/27 Mattias Mattsson :
> Hi all,
>
> I was able to run flashrom under Linux on PPC (big endian) hardware
> with two small modifications in internal.c and processor_enable.c (see
> attached patch). Not sure if this is the right way to do it but it
> seems to work for me.
>
> Note that for Apple hardware you have to use a special power on method
> to make the flash chip accessible (hold power button until beep). On
> some models you have to press and hold an additional button on the
> machine ("programmer's button") or keyboard ("Command").
> http://support.apple.com/kb/HT2322
> http://support.apple.com/kb/DL1284
> http://support.apple.com/kb/DL1126
>
> I have tested this on two pieces of Apple hardware: "Mac Mini" (model
> ID: PowerMac10,1) and "Mac mini (Late 2005)" (model ID: PowerMac10,2):
> http://support.apple.com/kb/ht3476
>
> By taking the hardware apart I can confirm they have the following flash chips:
>
> PowerMac10,1: AMD Am29LV008BB-90EC
> PowerMac10,2: SHARP LH28F008BJT-BTLZ1
>
> Flash chips seem to be mapped top-aligned in the 4GB address space.
> Looking at the Open Firmware forth code inside Apple's own firmware
> updates also suggests this is the case.
>
> I was able to probe, read, write and erase on both machines. Read
> files seem to contain valid data.
>
> Added support for LH28F008BJT-BTLZ1 and marked Am29LV008B as fully tested.

What's the status of these patches? Could anyone ACK them?