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how to  reduce uboot time

Question asked by 魏伟 魏 on Jul 8, 2019
Latest reply on Jul 16, 2019 by Rita Wang

hi:

  I want to reduce boot time in i.mx8M mini, I fund the spl consume 0.8s,and the uboot consume 1s. so from power up to start kernel, consume about 1.8s. I have remove some boot_cmd that we do not  need in the config files,but it hasn't improved much.now my uboot.bin still have 400K.so wo want to how to  reduce uboot time?

   1 how to enable cache and mmu?

 2  how to set cpu freq is 1.8GHz?

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