On Fri Feb 28, 2025 at 2:39 AM AEST, BALATON Zoltan wrote: > Hello, > > v2: > - change unused read function to g_assert_not_reached() > - new patch to add defines to constants > - added R-b tags > > This series adds NVRAM and support for -kernel, -initrd and -append > options to the amigaone machine. This makes it easier to boot AmigaOS > and avoids a crash in the guest when it tries to access NVRAM. > > While the -kernel option emulates what U-Boot passes to the kernel, > old Linux kernels for amigaone may not work with it because of two > reasons: these come in legacy U-Boot Multi-File image format that QEMU > cannot read and even after unpacking that and creating a kernel uimage > it won't find PCI devices because it does not initialise them > correctly. This works when booted from U-Boot because U-Boot inits PCI > devices. So does my BBoot loader which can be used to load AmigaOS so > I don't intend to emulate that part of U-Boot. > > I'd like this to be merged for the next release please. When merging > please update https://wiki.qemu.org/ChangeLog/10.0 with the following: > > amigaone > > Added support for NVRAM and -kernel, -initrd, -append command line > options. By default the NVRAM contents are not preserved between > sessions. To make it persistent create a backing file with 'qemu-image > create -f raw nvram.bin 4k' and add -drive > if=mtd,format=raw,file=nvram.bin to keep NVRAM contents in the backing > file so settings stored in it will be preserved between sessions. > > To run AmigaOS with BBoot using the -kernel option at least BBoot > version 0.8 is needed. Older BBoot versions only work with -device > loader and cannot be used with -kernel on amigaone.
Reviewed-by: Nicholas Piggin <npig...@gmail.com> > > Regards, > > BALATON Zoltan (5): > ppc/amigaone: Simplify replacement dummy_fw > ppc/amigaone: Implement NVRAM emulation > ppc/amigaone: Add default environment > ppc/amigaone: Add kernel and initrd support > ppc/amigaone: Add #defines for memory map constants > > hw/ppc/amigaone.c | 284 +++++++++++++++++++++++++++++++++++++++++++--- > 1 file changed, 271 insertions(+), 13 deletions(-)
