[U-Boot] [PATCH v5 2/2] env: mmc: add erase-function
Frank Wunderlich
frank-w at public-files.de
Thu Jun 27 09:56:45 UTC 2019
Hi,
> Gesendet: Donnerstag, 27. Juni 2019 um 11:32 Uhr
> Von: "Simon Goldschmidt" <simon.k.r.goldschmidt at gmail.com>
> > diff --git a/env/mmc.c b/env/mmc.c
> > index c3cf35d01b..da5cf21637 100644
> > --- a/env/mmc.c
> > +++ b/env/mmc.c
> > @@ -242,6 +242,55 @@ fini:
> > fini_mmc_for_env(mmc);
> > return ret;
> > }
> > +
> > +#if defined(CONFIG_CMD_ERASEENV)
>
> Seems you missed the CONFIG_SPL_BUILD guard here?
my block is inside of this (eraseenv only selectable if saveenv is selected)
#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_SPL_BUILD)
> > +static inline int erase_env(struct mmc *mmc, unsigned long size,
> > + unsigned long offset)
> > +{
> > + uint blk_start, blk_cnt, n;
> > + struct blk_desc *desc = mmc_get_blk_desc(mmc);
> > +
> > + blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len;
> > + blk_cnt = ALIGN(size, mmc->write_bl_len) / mmc->write_bl_len;
> > +
> > + n = blk_derase(desc, blk_start, blk_cnt);
> > + printf("%d blocks erased: %s\n", n, (n == blk_cnt) ? "OK" : "ERROR");
> > +
> > + return (n == blk_cnt) ? CMD_RET_SUCCESS : CMD_RET_FAILURE;
>
> This is no command, don't use the CMD_RET_ macros.
ok, i will return 0/1 similar to write_env (not -1 because of return-value in env_mmc_erase)
> > +}
> > +
> > +static int env_mmc_erase(void)
> > +{
> > + int dev = mmc_get_env_dev();
> > + struct mmc *mmc = find_mmc_device(dev);
> > + int ret, copy = 0;
> > + u32 offset;
> > +
> > + if (!mmc)
> > + return CMD_RET_FAILURE;
> > +
> > + if (mmc_getwp(mmc) == 1) {
>
> Why is this needed when save doesn't use it?
thats a point...i'll remove it. added it from do_mmc_write in first version and had not removed it.
> > + printf("Error: card is write protected!\n");
> > + return CMD_RET_FAILURE;
> > + }
>
> Is 'init_mmc_for_env' not needed here?
should be initialized too
> Regards,
> Simon
thanks for review
regards Frank
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