[U-Boot] [PATCH 1/1] arm: mmc: omap: spl size reduction by removing write/erase ops

[Aneesh V]

Tom,

On Thursday 02 February 2012 10:02 PM, Tom Rini wrote:
> On Thu, Feb 2, 2012 at 6:04 AM, Balaji T K<balajitk at ti.com>  wrote:
>> spl for OMAP4 does not use mmc read/write.
>> Add CONFIG_MMC_NO_ERASE, CONFIG_MMC_NO_WRITE to platforms where mmc
>> write/erase operation is not needed in spl.
>> Use these CONFIGS to remove write/erase code in mmc.c and omap_hsmmc.c
>> This reduces the spl size by ~1128 Bytes
>
> Are you running into a size limitation again?  If not, I think we want

We are always on the border. Minor fluctuations are affecting us. And
our EMU boards(secure devices) are permanently broken due to this. I am
not sure if this one helps EMU devices though.

> to wait until we sort out how SPL includes/excludes stuff moving
> forward as this shows there's probably a lot of other unused code
> being pulled in.
>

We use -ffunction-sections -fdata-sections and --gc-sections while
building SPL. So, un-necessary stuff will not be included unless the
function pointers are set in some structures and not used. I think that
is what is happening in this case. Other than that I am not expecting
much scope for improvement.

One key experiment I want to do is Thumb mode build. I have some old
patches that I may cleanup and post sometime soon. But Thumb mode had
some tool-chain related issues last time I tried.

br,
Aneesh