Using MMC 2Gb - it won't work!

Hi!
Today I tried to burn the latest Raspbian Wheezy on a different support rather than SD, like I used to.

It won't boot: the green led blink three times, pause, blink three times, pause ecc... I tried to flash it again, but nothing change. Is the MMC type?

I flashed on a Kingston MMC Mobile "Dual-Voltage support", that I used in a nokia 6680 years ago. The memory is working perfectly and it's even faster than SD used before.
I didn't read warnings about using mmc, and there's people that are using mmcs.

thanks to all!

PS: I know about issue related to start.elf, but it's present on MMC.

I used to use some small (32 and 128MB) MMC cards for some bare metal testing, but they don't seem to work with the more recent firmware. I suspect that support for MMC has been dropped in favour of better SD support as almost all users will have SD cards.

And there's nothing official about that?

MMCs became usupported since the firmware do not require the loader.bin and started to use *.elf files? (http://elinux.org/R-Pi_Troubleshooting#Green_LED_blinks_in_a_specific_pattern)

There's a trick to use recent firmwares on this memory? Why these file changes? I didn't found something useful with my friend google

thexeno: "And there's nothing official about that?"

The requirements clearly state that you need a SD card.

Technical information is hard to find, but I did find (http://wiki.seabright.co.nz/wiki/SdCardProtocol.html) a statement that the initialisation sequences are different. The initialisation is done by the firmware of the GPU, so I guess they have only used the sequence for the SD card. A brief look at Linux information suggests that both MMC and SD cards can be read by Linux, so I guess that you could use your cards in an adapter on a USB port (as storage, not boot). It does seem that the MMC card is physically thicker than the SD card and may not fit in a SD adaptor

Cool, thanks a lot. So, itcan works if we change the initialisation part of the firmware. It's possible? Of course XD
But someone know how to do this? To be honest, i don't know even where to start for searching infos about that

Even some rough indications from where to start doing this. Of course I'm not expecting a full ready prepared answer. No lunch is free

@Simon: when you say " The initialisation is done by the firmware of the GPU, so I guess they have only used the sequence for the SD card." is it possible that the sequence of initialization of MMC is still available somewhere? I hope so, it's open source, btw
Because in early versions MMC has been supported.

Nothing what runs on the GPU is open-source.
And as the GPU boots the Pi (bit unusual , true) that includes
the bootloader.


ghans

that's too bad

Open a issue on github ... perhaps dom has some spare time ...


ghans