env.h says this about about callback declarations (U_BOOT_ENV_CALLBACK):
* For SPL these are silently dropped to reduce code size, since environment * callbacks are not supported with SPL.
So env_callback_init() does a lot of work to not find anything in the guaranteed empty env_clbk list. Drop callback.o entirely from the link and stub out the only public function defined in callback.o. This cuts about 600 bytes from the SPL on my ppc build.
Signed-off-by: Rasmus Villemoes rasmus.villemoes@prevas.dk --- env/Makefile | 2 +- include/env_callback.h | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/env/Makefile b/env/Makefile index e2a165b8f1..c4ad654328 100644 --- a/env/Makefile +++ b/env/Makefile @@ -7,9 +7,9 @@ obj-$(CONFIG_$(SPL_TPL_)ENV_SUPPORT) += common.o obj-$(CONFIG_$(SPL_TPL_)ENV_SUPPORT) += env.o obj-$(CONFIG_$(SPL_TPL_)ENV_SUPPORT) += attr.o obj-$(CONFIG_$(SPL_TPL_)ENV_SUPPORT) += flags.o -obj-$(CONFIG_$(SPL_TPL_)ENV_SUPPORT) += callback.o
ifndef CONFIG_SPL_BUILD +obj-y += callback.o obj-$(CONFIG_ENV_IS_IN_EEPROM) += eeprom.o extra-$(CONFIG_ENV_IS_EMBEDDED) += embedded.o obj-$(CONFIG_ENV_IS_IN_EEPROM) += embedded.o diff --git a/include/env_callback.h b/include/env_callback.h index 74da20eec3..05e9516a0f 100644 --- a/include/env_callback.h +++ b/include/env_callback.h @@ -72,6 +72,12 @@ "serial#:serialno," \ CONFIG_ENV_CALLBACK_LIST_STATIC
+#ifndef CONFIG_SPL_BUILD void env_callback_init(struct env_entry *var_entry); +#else +static inline void env_callback_init(struct env_entry *var_entry) +{ +} +#endif
#endif /* __ENV_CALLBACK_H__ */