Thanks Marc,
Can I use libpayload to make a payload for a 64 bit ROM? I'm following the coreboot minnowboard max 64bit instructions below and substituting the default payload for the payloadlib sample hello world payload.
http://elinux.org/Minnowboard:MinnowMaxCoreboot
Also, is there a lower level method than using payloadlib to make a simple coreboot payload elf that just initializes rs232 and prints a string over rs232?
Any good low level documentation you would recommend for understanding how a payload needs to initialize rs232 and prints a string?
Thanks again! Adam Hi Adam
On Sat, Mar 7, 2015 at 5:46 AM Adam Duncan adam.duncan@gmail.com wrote:
Hi all. I am new to coreboot and just built a default coreboot+seabios ROM and ran it on a 64bit minnowboard max. Now I'd like to build a simple hello world payload elf that would simply print a string on rs232.
Can you recommend the best approach to do this? I was looking at using libpayload but read in the README that it creates 32 bit elfs.
Libpayload is exactly what you want to use to make a simple hello world. The processor is in 32bit mode and can run 32bit code, if that is your concern.
Regards, Marc
Thanks! Adam -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot