Dear apple pie, > Hi Wolfgang, > > I have a number of u-boot development questions that I would like to raise > to you for answers: > > (1) Is it possible to install u-boot in a Windows XP environment? If it is, > please tell me the steps to follow. Are they the same as those cut out for > Linux?
Well, it's probably possible, but honestly, why? > (2) Is it possible to use 'cgywin' to build u-boot, since 'cgywin' > mimicks Linux's environment? Again, probably -- you can invest some time and try yourself. > (3) Is it possible to directly download an > u-boot image onto the RAM space of a customerized development board to > debug u-boot? If it is, please list out the steps to follow. It is possible, but not always and it can have side effects. It is not supported. > (4) What type > of u-boot image should be used, if downloading of the u-boot image to the > RAM space of the board is via a Lauterbach ICE (a debugger with a JTAG > interface)? Normally, a Lauterbach ICE expects a .axf file to be > downloaded (axf = archived, executable file), but in the u-boot case, > should it be the ELF image u-boot build generates? No idea, really ... probably u-boot.bin > (5) The intention of > the endeavor is to develope some "standalone applications" that allow > frequencies/operating-voltages of the CPU & peripherals to be changed, > during the time when u-boot is run, such as to measure the performances of > the CPU & other peripherals. The existing development board has an ARM > Cortex-A9 and a Cortex-R4 running on it. Why don't you patch uboot itself and submit patches mainline? > (6) Is it possible to make "minor > changes" to the u-boot codes, such that controls could be passed back to > u-boot at will from an application, which gets executed using the u-boot > command: go <address> ? > Please elaborate in as much details as possible, if it can. The motivation > is that after a change of operating frequencies & voltages of the CPU & > peripherals, u-boot command: go <address> would be called to measure > performances of the board. Thereafter, control would be returned to u-boot > again, such that another set of operating frequencies & voltages could be > selected. Add a standard uboot command, use a standard uboot commands to measure this stuff, why make standalone app, it's nonsense and affects the results too. > (7) Is it possible for a file to be read in, say, from a SD card > via u-boot command, since u-boot comes with a SD driver? > Yes > > Also, is there any write-up that describes how to search past questions > raised by u-boot users? As it stand, I google search seems to be the only > way that I could be used to come up with relevant questions associated > with a keyword. How did you register to this mailing list anyway? There are archives at the same place. > > Thank you in advance for your help, and looking forward to your reply. > > > Thanks, > > > Ivan Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
