-- Cumprimentos, JPCasainho - http://www.Casainho.net On Monday 14 April 2008 10:26:54 Leon.Z wrote: > HI:) > > You can use the go CMD to test your app. > Here post my used step. > > Write a simple code.It's just include a function definition > void _start() > { > } > Then compile it.After do that use following step: > ppc_82xx-ld -Bstatic -Ttext 0x00001000 board/bname/ttt.o -o ttt.elf > > -bash-2.05b$ ppc_82xx-objdump -d ttt.elf > > ttt.elf: file format elf32-powerpc > > Disassembly of section .text: > > 00001000 <_start>: > 1000: 94 21 ff e8 stwu r1,-24(r1) > 1004: 38 21 00 18 addi r1,r1,24 > 1008: 4e 80 00 20 blr > -bash-2.05b$ > > you can see the function just call the stack operation. > then you can put your test code to the _start function's body, > and run the step above again. > > finally to get a pure bin file: > ppc_82xx-objcopy --gap-fill=0xff -O binary ttt.elf ttt.bin > > and then test the code in the u-boot prompt: > u-boot> tftp 0x1000 ttt.bin > u-boot> go 0x1000 > > > ======= 2008-04-14 16:33:55 您在来信中写道：======= > > >Hello :-) > > > >I am looking for an example code for a Flash LED, for a stand alone > >application. I did read the examples like "hello world" and the > >/doc/standalone. > > > >I would like to know If I can build a stand alone application without > >build the u-boot -- I would appreciate if someone point me to a > >tutorial, I just find examples for load Linux... > > > >I am a newbie in 32 bits world. I am trying to port Rockbox*, the Free > >Software firmware for audio DAPs like IPods, Sansas, etc., for a > >Free/Open hardware, the Rockbox Player**. > > > >I need to use u-boot to launch that firmware, first I would like to > >start doing a flash led application. I did build u-boot, using the > >sources that came with the dev. board I am using, with success however > >the firmware I want to build don't build with arm-linux-gcc, just with > >arm-elf-gcc. > > > >I appreciate any suggestions, any guidance. Thank you. > > > >Jorge Pinto, > > > >http://www.casainho.net > > > >* http://www.rockbox.org/ > >** http://www.rockbox.org/twiki/bin/view/Main/RockboxPlayer > > > >------------------------------------------------------------------------- > >This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > >Don't miss this year's exciting event. There's still time to save $100. > >Use priority code J8TL2D2. > >http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/jav > >aone _______________________________________________ > >U-Boot-Users mailing list > >U-Boot-Users@lists.sourceforge.net > >https://lists.sourceforge.net/lists/listinfo/u-boot-users > > = = = = = = = = = = = = = = = = = = = = > > > 　　　　　　　　致 > 礼！ > > > 　　　　　　　　Leon.Z > 　　　　　　　　leon.kernel@gmail.com > 　　　　　　　　　　2008-04-14