From: Marek Vasut Date: Wed, 6 Apr 2022 00:21:32 +0000 (+0200) Subject: env: Implement lower priority arch_env_get_location() X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=de70e8879bb253f4d2a9ba9149cd41cb38b94ed8;p=u-boot.git env: Implement lower priority arch_env_get_location() Currently there is only one way to override desired environment location, by implementing env_get_location(). This is increasingly being conflated both on board level and architecture level, which leads to a problem on boards where this function is already implemented on architecture level, since those boards have no way to override this environment location on board level anymore. Implement arch_env_get_location() function which is architecture specific and should only ever be implemented in architecture code. This function has lower priority than env_get_location(), which should only ever be implemented in board code, and which overrides the arch_env_get_location() architecture environment selection. This way, architecture can define its default environment chooser, while board can now override it as needed at all times. There is no functional change, since env_get_location() simply returns arch_env_get_location(), and arch_env_get_location() implements the current env_get_location() default content. Signed-off-by: Marek Vasut Cc: Adam Ford Cc: Fabio Estevam Cc: Marek Behún Cc: Peng Fan Cc: Simon Glass Cc: Stefano Babic Cc: Tim Harvey Cc: Tom Rini Cc: Tommaso Merciai Cc: Vladimir Oltean --- diff --git a/env/env.c b/env/env.c index e4dfb92e15..69848fb060 100644 --- a/env/env.c +++ b/env/env.c @@ -110,13 +110,14 @@ static void env_set_inited(enum env_location location) } /** - * env_get_location() - Returns the best env location for a board + * arch_env_get_location() - Returns the best env location for an arch * @op: operations performed on the environment * @prio: priority between the multiple environments, 0 being the * highest priority * * This will return the preferred environment for the given priority. - * This is overridable by boards if they need to. + * This is overridable by architectures if they need to and has lower + * priority than board side env_get_location() override. * * All implementations are free to use the operation, the priority and * any other data relevant to their choice, but must take into account @@ -127,7 +128,7 @@ static void env_set_inited(enum env_location location) * Returns: * an enum env_location value on success, a negative error code otherwise */ -__weak enum env_location env_get_location(enum env_operation op, int prio) +__weak enum env_location arch_env_get_location(enum env_operation op, int prio) { if (prio >= ARRAY_SIZE(env_locations)) return ENVL_UNKNOWN; @@ -135,6 +136,28 @@ __weak enum env_location env_get_location(enum env_operation op, int prio) return env_locations[prio]; } +/** + * env_get_location() - Returns the best env location for a board + * @op: operations performed on the environment + * @prio: priority between the multiple environments, 0 being the + * highest priority + * + * This will return the preferred environment for the given priority. + * This is overridable by boards if they need to. + * + * All implementations are free to use the operation, the priority and + * any other data relevant to their choice, but must take into account + * the fact that the lowest prority (0) is the most important location + * in the system. The following locations should be returned by order + * of descending priorities, from the highest to the lowest priority. + * + * Returns: + * an enum env_location value on success, a negative error code otherwise + */ +__weak enum env_location env_get_location(enum env_operation op, int prio) +{ + return arch_env_get_location(op, prio); +} /** * env_driver_lookup() - Finds the most suited environment location diff --git a/include/env_internal.h b/include/env_internal.h index b704c03363..f30fd6159d 100644 --- a/include/env_internal.h +++ b/include/env_internal.h @@ -234,10 +234,26 @@ const char *env_ext4_get_intf(void); */ const char *env_ext4_get_dev_part(void); +/** + * arch_env_get_location()- Provide the best location for the U-Boot environment + * + * It is a weak function allowing board to overidde the environment location + * on architecture level. This has lower priority than env_get_location(), + * which can be defined on board level. + * + * @op: operations performed on the environment + * @prio: priority between the multiple environments, 0 being the + * highest priority + * Return: an enum env_location value on success, or -ve error code. + */ +enum env_location arch_env_get_location(enum env_operation op, int prio); + /** * env_get_location()- Provide the best location for the U-Boot environment * * It is a weak function allowing board to overidde the environment location + * on board level. This has higher priority than arch_env_get_location(), + * which can be defined on architecture level. * * @op: operations performed on the environment * @prio: priority between the multiple environments, 0 being the