[PATCH 4/4] S5PV210 iROM magic boot code

Alexey Galakhov agalakhov at gmail.com
Fri May 4 05:47:59 EDT 2012

On 03.05.2012 23:59, Juergen Beisert wrote:
> It seems to be a low hanging fruit to use the iROM to access some of the
> peripherals. But there is no way to tell the compiler the calling convention
> to the ROM functions. And the entry points seems guessed only. This results
> into "it works for me with this compiler and these compiler flags and that
> CPU's silicon revision"...
> The S3C6410 CPU comes also with such an iROM. But calling it is only useful in
> the first stage loader (and the S3C6410 iROM has a defined jump table to
> call specific functions, there is no need to guess the real entry points).
> Writing a Barebox driver for this MMC/SD unit instead should be the correct
> way.
> Juergen


This function is for 1st stage only. I plan to remove it as soon as MMC
driver will be complete. Right now it is needed, however, to boot 2nd stage.

Right not I have working NAND, DRAM and UART. I plan to get working USB
soon. MMC seems to be (almost) generic SDHCI (very similar to existing
imx driver).


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