2008-07-19 08:32:04 Booting in uClinux

Appalayagari Sreedhar (INDIA)

Message: 59129

Hi,

In my custom board, Blackfin is connected in the BMODE : 00

I am doing booting from flash like this,

in u-boot cmd_bootm.c file , I am reading the entire binary file into the CFG_LOAD_ADDR and doing the crc checking and as follows similar like "tftp 0x1000000 uImage;bootm" its working for me.

Is this correct or is there any way to do it. I have gone through the blackfin booting process documents EE-240 EE-239 I am bit confused with the BMode 00 booting in uClinux.

Can anyone correct me/suggest me the method in uClinux.

Thanks and Regards,Sreedhar

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2008-07-19 12:43:28 Re: Booting in uClinux

Mike Frysinger (UNITED STATES)

Message: 59133

EE app notes have no bearing on Linux at all. U-Boot handles the whole Linux loading/booting process.

there is no real "correct" way for loading/booting files. tftp;bootm is pretty common.

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2008-07-22 10:37:21 Re: Booting in uClinux

Appalayagari Sreedhar (INDIA)

Message: 59227

Hi Mike,

Thankyou very much. Can you clear me one point whether the idea of reading the entire binary from flash into the sdram location(CFG_LOAD_ADDR) and booting from that location is correct?.

Best Regards,Sreedhar.

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2008-07-22 22:00:27 Re: Booting in uClinux

Mike Frysinger (UNITED STATES)

Message: 59250

CFG_LOAD_ADDR is a default value. you should use getenv("loadaddr") and then fall back to CFG_LOAD_ADDR.