On Fri, Nov 17, 2017 at 10:24:37AM +0100, Lukasz Majewski wrote: > Hi Maxime, > > > Now that we have everything in place to support multiple environment, > > let's make sure the current code can use it. > > > > The priority used between the various environment is the same one > > that was used in the code previously. > > > > At read / init times, the highest priority environment is going to be > > detected, and we'll use the same one without lookup during writes. > > This should implement the same behaviour than we currently have. > > > > Signed-off-by: Maxime Ripard <maxime.rip...@free-electrons.com> > > --- > > env/env.c | 75 > > ++++++++++++++++++++++++++++++++++++++++++--------------------- 1 > > file changed, 50 insertions(+), 25 deletions(-) > > > > diff --git a/env/env.c b/env/env.c > > index 1d13220aa79b..6af9f897b0ae 100644 > > --- a/env/env.c > > +++ b/env/env.c > > @@ -26,33 +26,58 @@ static struct env_driver *_env_driver_lookup(enum > > env_location loc) return NULL; > > } > > > > +static enum env_location env_locations[] = { > > +#ifdef CONFIG_ENV_IS_IN_EEPROM > > + ENVL_EEPROM, > > +#endif > > +#ifdef CONFIG_ENV_IS_IN_FAT > > + ENVL_FAT, > > +#endif > > +#ifdef CONFIG_ENV_IS_IN_FLASH > > + ENVL_FLASH, > > +#endif > > +#ifdef CONFIG_ENV_IS_IN_MMC > > + ENVL_MMC, > > +#endif > > +#ifdef CONFIG_ENV_IS_IN_NAND > > + ENVL_NAND, > > +#endif > > +#ifdef CONFIG_ENV_IS_IN_NVRAM > > + ENVL_NVRAM, > > +#endif > > +#ifdef CONFIG_ENV_IS_IN_REMOTE > > + ENVL_REMOTE, > > +#endif > > +#ifdef CONFIG_ENV_IS_IN_SPI_FLASH > > + ENVL_SPI_FLASH, > > +#endif > > +#ifdef CONFIG_ENV_IS_IN_UBI > > + ENVL_UBI, > > +#endif > > +#ifdef CONFIG_ENV_IS_NOWHERE > > + ENVL_NOWHERE, > > +#endif > > + ENVL_UNKNOWN, > > +}; > > + > > +static enum env_location env_load_location; > > + > > static enum env_location env_get_location(enum env_operation op, int > > prio) { > > - if (prio >= 1) > > - return ENVL_UNKNOWN; > > - > > - if IS_ENABLED(CONFIG_ENV_IS_IN_EEPROM) > > - return ENVL_EEPROM; > > - else if IS_ENABLED(CONFIG_ENV_IS_IN_FAT) > > - return ENVL_FAT; > > - else if IS_ENABLED(CONFIG_ENV_IS_IN_FLASH) > > - return ENVL_FLASH; > > - else if IS_ENABLED(CONFIG_ENV_IS_IN_MMC) > > - return ENVL_MMC; > > - else if IS_ENABLED(CONFIG_ENV_IS_IN_NAND) > > - return ENVL_NAND; > > - else if IS_ENABLED(CONFIG_ENV_IS_IN_NVRAM) > > - return ENVL_NVRAM; > > - else if IS_ENABLED(CONFIG_ENV_IS_IN_REMOTE) > > - return ENVL_REMOTE; > > - else if IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH) > > - return ENVL_SPI_FLASH; > > - else if IS_ENABLED(CONFIG_ENV_IS_IN_UBI) > > - return ENVL_UBI; > > - else if IS_ENABLED(CONFIG_ENV_IS_NOWHERE) > > - return ENVL_NOWHERE; > > - else > > - return ENVL_UNKNOWN; > > + switch (op) { > > + case ENVO_GET_CHAR: > > + case ENVO_INIT: > > + case ENVO_LOAD: > > + if (prio >= ARRAY_SIZE(env_locations)) > > + return -ENODEV; > > + > > + return env_load_location = env_locations[prio]; > > + > > + case ENVO_SAVE: > > + return env_load_location; > > + } > > + > > + return ENVL_UNKNOWN; > > } > > > > static struct env_driver *env_driver_lookup(enum env_operation op, > > int prio) > > I'm just wondering... > > Do you think that it may be helpful to have a way to force particular > environment to be used (despite of the priority)?
That's one of the hard parts of this, yes. I think I had suggested before that we handle that in a follow up series? -- Tom
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