-----Original Message----- From: EXT Wolfgang Denk [mailto:wd@denx.de] Sent: Thursday, October 22, 2015 7:16 PM To: Krzeminski, Marcin (Nokia - PL/Wroclaw) marcin.krzeminski@nokia.com Cc: u-boot@lists.denx.de Subject: Re: [U-Boot] Reading data from SPI flash before relocation - what is the best way to do this?
Dear Marcin,
In message <CA0E6F9BA6AED7458C23277BD87075E50F731841@DEMUMBX014.nsn- intra.net> you wrote:
I want to chose the best aproach to achive something like this: There is a u-boot without SPL and it is copied by bootrom to SDRAM.
OK, the question why you don't use SPL has already been asked.
In first phase (while running *_f functions) I need to read some
configuration data from SPI NOR, and it must be done before DDR config.
Why do you need to read it separately? Can you not "attach" it to the U-Boot image, so the boot ROM will read that combined image (U-Boot plus your config data) ?
Because many configuration are expected, so avoiding many u-boot binaries is the target.
Generally it seems that I want to do something that is against u-boot design, so my question should be, how to do it harmless?
I changed linker script, cleared bss and it seem that this is working fine, so probably I'll try this way.
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de Until you walk a mile in another man's moccasins, you can't imagine the smell.
Best regards, Marcin Krzemiński