The attached patch changes the qemu northbridge.c to read the RAM size from the i440 PCI bridge configuration registers. This is mostly a copy-and-paste from the i440bx northbridge.c.
Unfortunately the current version of qemu does not set these registers, but I have patched qemu so that it emulates the i440 more faithfully in this regard. The LinuxBIOS patch preserves the existing behavior--hardcoding the RAM size to 64 MB--when running on an unpatched qemu.
I have submitted the qemu patch to the qemu-devel list, and will also include it in my HOWTO.
--Ed
nice work! let me know when this is committed to qemu.
I am not on that list, think you could ask them for a little favor? I'd like a switch whereby I could say --memory-error x, such that one in every x memory references gave bad data. This would help with linuxbios testing on OLPC.
Thanks
ron
Ronald G Minnich rminnich@lanl.gov writes:
I am not on that list, think you could ask them for a little favor? I'd like a switch whereby I could say --memory-error x, such that one in every x memory references gave bad data. This would help with linuxbios testing on OLPC.
That would kill performance. I suggest you add it yourself into Bochs instead.
~j
oh yeah, commited as rev 2405, builds, not tested.
ron
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Ed Swierk -
Johan Rydberg -
Ronald G Minnich