On Sep 11, 2015, at 4:09 PM, Laurent Vivier wrote: > > > Le 11/09/2015 20:01, Programmingkid a écrit : >> >> On Sep 11, 2015, at 12:00 PM, qemu-discuss-requ...@nongnu.org >> <mailto:qemu-discuss-requ...@nongnu.org> wrote: >> >>> On 10/09/2015 8:58 AM, Maximilian H. wrote: >>>> Hello, >>>> >>>> I was looking into what parts would need change to save and restore the >>>> nvram content for the qemu-system-sparc vm between boots. >>>> >>>> I see the code in hw/timer/m48t59.c that implements the nvram. >>>> >>>> So some questions arise, and before I spend too much time poking around >>>> the still unknown code, I'd thought I ask first. >>>> >>>> 1. Command line processing starts in vl.c in the main fct there ? Can I >>>> add a command line argument there, say "-sparcnvram" ? >>>> >>>> 2. In hw/timer/m48t59.c has no functionality that I see from having a >>>> look at it (not in depth) to save or restore the nvram's contents for >>>> sparc. Is there a general facility that qemu has that provides such a >>>> functionality - i.e. is there a general qemu save and restore framework ? >>>> >>>> 3. Is there an example somebody could point me to that implements >>>> something similar ? Imitation is the sincerest of flattery .... >>>> >>>> 4. All the alarm and watchdog functionality that the m48t08 provides, is >>>> that used on sparc too ? >>>> >>>> 5. Besides what is in >>>> http://wiki.qemu.org/Documentation/GettingStartedDevelopers, is there >>>> some qemu coding documentation to make it faster for somebody unfamilar >>>> with qemu's code like me to be able to implement something ? I'd like to >>>> spend a few evenings on this, produce a patch and move on. >>>> >>>> Thanks >>>> BR >>>> Max. >>> >> >> This sounds like a good idea. Having OpenBIOS settings actually be saved >> between boots >> would make things more real. >> >> Mark, do you think it is possible for a QEMU command line option to >> actually load the >> saved OpenBIOS settings from a file and restore them into memory? I'm >> thinking something >> along the lines of -prom-memory <file name>. > > Nostalgia: a seven years old thread, out of date now: > > https://lists.gnu.org/archive/html/qemu-devel/2008-05/msg00002.html > >> >> Max, there is a project that you should probably look at called >> OpenBIOS. It implements >> an implementation of Open Firmware. Here is where more info can be >> found: http://www.openfirmware.info/Welcome_to_OpenBIOS. If you do want >> to implement this feature, >> it would help to know how the BIOS is implemented. > > Laurent
Could you send the patch please?