[PATCH 2/2] env: add CONFIG_ENV_SECT_SIZE_AUTO

[Joakim Tjernlund]

On Wed, 2020-05-06 at 11:37 +0200, Rasmus Villemoes wrote:
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> On 06/05/2020 11.21, Joakim Tjernlund wrote:
> 
> > I can test NOR Flash ,I am on an older u-boot ATM but fw_setenv stuff should be simple to backport
> > How would fw_env.config be dealt with? Just ignored when auto size?
> 
> AFAIK, the U-Boot configuration doesn't affect the userspace fw_env
> tools, so auto size has to be opt-in separately in fw_env.config, which
> is where I did use 0 to mean auto (see the referenced commit
> e282c422e0). You should be able to test that part already with just
> fw_setenv built from master and an appropriate fw_env.config [or perhaps
> you need to add another "mtdinfo.type == ..." condition first].

Oh, I misunderstood then. I was mostly interested in fw_setenv ATM
Looking at your fw_setenv commit I have one question:
Will this auto mode also work when erase size < env size ?
We have the case:

# MTD device name	Device offset	Env. size	Flash sector size
 /dev/mtd1		0x0000		0x2000		0x00001000

Above does not work because EB < Env. size, one have to set the sector size
to >= Env. size(0x2000)

 Jocke