On Fri, May 8, 2015 at 4:14 PM, Tom Rini trini@konsulko.com wrote:
On Sat, May 09, 2015 at 12:15:37AM +0200, Marek Vasut wrote:
On Friday, May 08, 2015 at 11:51:36 PM, Tim Harvey wrote:
Allocating space for temporary env on the stack makes env_relocate_spec() unsuitable for SPL environments which have very little stack.
Well yeah, but what if you don't have malloc area ? I'd expect that the be the case in SPL quite often.
OK, hold up. We went through this a while back which is why things are how they are today. First, we have things setup today such that you can throw stack (at the point we do env in SPL) into DDR. This means we can keep doing things the way they are. You can take a look at include/configs/am335x_evm.h and where CONFIG_EMMC_BOOT is set, that's how we do what it looks like you're trying to do on imx6 but on TI am335x.
-- Tom
Tom,
Yes, I'm doing this on Gateworks Ventana (board/gateworks/gw_ventana) based on IMX6 which has a limmited stack size during SPL. I don't see anything magic in include/configs/am335x_evm.h that catches my attention. Do you know where the code is that lets you point the stack to DDR? It sounds like that's what I need.
This sounds like there could be some boards using nand that rely on malloc (that's where I got the inspiration from for this) and others using mmc that rely on a decent size stack. I wonder if there is a #define that we can base off of to provide the best of both? Its not that great having two env drivers that have opposite requirements but I certainly don't want to change one to make them consistent it it will break boards.
Tim