Le 11/09/2015 23:07, Programmingkid a écrit : > > 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 Nostalgia: a seven years old thread, out of date now: 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? >
The patch is attached to the mail in the thread. Anyway, I don't think it applies now. Laurent