Booting on xo-1.75 - load and go?
We currently boot on the 1.75 boards with an olpc.fth that dixit load last:\vmlinuz go Attempting boot int:\linuz does not work -- and from http://wiki.laptop.org/go/Forth_Lesson_12#Manual_Booting I gather that something in the decompression or preparing for execution stages something goes amiss. Have we got any notes on what's broken here? Finally, what are the semantics of 'last'? I'm not familiar with it, and google ain't help. m -- martin.langh...@gmail.com mar...@laptop.org -- Software Architect - OLPC - ask interesting questions - don't get distracted with shiny stuff - working code first - http://wiki.laptop.org/go/User:Martinlanghoff ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Booting on xo-1.75 - load and go?
Hi, On Wed, Jun 15 2011, Martin Langhoff wrote: We currently boot on the 1.75 boards with an olpc.fth that dixit load last:\vmlinuz go Attempting boot int:\linuz does not work -- and from http://wiki.laptop.org/go/Forth_Lesson_12#Manual_Booting I gather that something in the decompression or preparing for execution stages something goes amiss. Have we got any notes on what's broken here? Finally, what are the semantics of 'last'? I'm not familiar with it, and google ain't help. I've been using boot int:\vmlinuz for all of my 1.75 kernel work, and it's been working fine. What do you see on serial? last:\ maps to whichever device the olpc.fth was loaded from, so that you can write an olpc.fth that doesn't need to know ahead of time whether it's going to be put on an SD card or a USB stick or whatever. - Chris. -- Chris Ball c...@laptop.org http://printf.net/ One Laptop Per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Booting on xo-1.75 - load and go?
On Wed, Jun 15, 2011 at 2:24 PM, Chris Ball c...@laptop.org wrote: I've been using boot int:\vmlinuz for all of my 1.75 kernel work, and it's been working fine. What do you see on serial? Hm, you're right... then it's PEBKAC when I am fiddling with olpc.fth and trying to fiddle with ramdisks and boot-file. last:\ maps to whichever device the olpc.fth was loaded from that's handy! m -- martin.langh...@gmail.com mar...@laptop.org -- Software Architect - OLPC - ask interesting questions - don't get distracted with shiny stuff - working code first - http://wiki.laptop.org/go/User:Martinlanghoff ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Booting on xo-1.75 - load and go?
On Wed, Jun 15, 2011 at 5:09 PM, Martin Langhoff martin.langh...@gmail.com wrote: On Wed, Jun 15, 2011 at 2:24 PM, Chris Ball c...@laptop.org wrote: I've been using boot int:\vmlinuz for all of my 1.75 kernel work, and it's been working fine. What do you see on serial? Hm, you're right... then it's PEBKAC when I am fiddling with olpc.fth and trying to fiddle with ramdisks and boot-file. I was doing console=ttyS0,115200 console=tty0 fbcon=font:SUN12x22 expand$ to boot-file boot int:\vmlinuz and I should have been saying root=/dev/mmcblk0p2 console=ttyS2,115200 console=tty0 loglevel=9 rootwait expand$ to boot-file BTW, what's behind the line below? d4282c08 l@ 80. invert and d4282c08 l! m -- martin.langh...@gmail.com mar...@laptop.org -- Software Architect - OLPC - ask interesting questions - don't get distracted with shiny stuff - working code first - http://wiki.laptop.org/go/User:Martinlanghoff ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Booting on xo-1.75 - load and go?
Hi, On Wed, Jun 15 2011, Martin Langhoff wrote: d4282c08 l@ 80. invert and d4282c08 l! It was necessary to avoid framebuffer tearing on A1, but I expect Mitch now does that by default. I had it in olpc.fth for machines that hadn't got an OFW upgrade yet, is likely safe to remove. - Chris. -- Chris Ball c...@laptop.org http://printf.net/ One Laptop Per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
