Rk3288 boot time - kernel start

Chip Platform Rockchip
1

Hello! I need to boot rk3288 fast as possible, and I have a question about begining of kernel load process. First of all I enabled falcon mode in u-boot to jump into kernel image directly from SPL (raw sector mode). Everything is ok, kernel starts normally, but delay about 2 seconds is present between messages about kernel uncomressed and first printk from kernel (earlyprintk and LL debug is enabled).

Anybody knows what does it do at all that time and how I can reduce this delay? I tried build image by official guide, and this delay also presented.

Thanks!

2

Thank You for reply! After some changes in kernel config, I came to the conclusion that this time is spent on serial output initialization and if I simple pass quiet parameter to kernel it boots very more faster.