On Mon, Jan 19, 2015 at 10:59 PM, Hervé Poussineau <hpous...@reactos.org> wrote: > Le 19/01/2015 12:35, Mark Cave-Ayland a écrit : >> >> This patch lays the groundwork for switching sun4u over from ioport NVRAM >> access to MMIO NVRAM access. >> >> Patch 1 introduces a new year_offset property which is the offset between >> the >> year value stored in hardware and the actual year. In particular, Sun >> hardware >> has a 68 year offset used to extend the date range of the IC. While the >> kernel sources I have viewed contain this offset within a #ifdef >> CONFIG_SPARC >> block, I've updated all the callers so that no change in behaviour will be >> seen across all platforms. PPC users may wish to alter the callers to >> change >> this behaviour as required. >> >> Patch 2 mimics the mem_base parameter from m48t59_init() to >> m48t59_init_isa() >> so that MMIO can be used for sun4u where the NVRAM is attached to the ebus >> which is essentially the same as an ISA bus. > > > I've a patch which QOM'ifies m48t59, that I'll send to the list. > If you apply it, you'll be then able to create a sysbus-m48t02 device, and > then to add it to ebus memory region.
Why m48t02? As discussed before, it shall be a m48t59 device: http://lists.gnu.org/archive/html/qemu-devel/2013-04/msg05559.html Artyom -- Regards, Artyom Tarasenko SPARC and PPC PReP under qemu blog: http://tyom.blogspot.com/search/label/qemu