On 11/07/13 22:24, Marcel Apfelbaum wrote:
> On Thu, 2013-11-07 at 22:12 +0100, Laszlo Ersek wrote:
>> adding subregion 'pci-hole' to region 'system' at offset 60000000
>> warning: subregion collision 60000000/a0000000 (pci-hole) vs
>> ffe00000/200000 (system.flash)
> Thank you Laszlo for the detailed info!
> I think the problem is right above. Why pci-hole and system.flash collide?
> IMHO we should not play with priorities here, better solve the collision.
pc_init1()
pc_memory_init()
pc_system_firmware_init()
pc_system_flash_init() <---- sets base address to
0x100000000ULL - flash_size
pflash_cfi01_register()
sysbus_mmio_map()
sysbus_mmio_map_common()
memory_region_add_subregion()
i440fx_init()
memory_region_init_alias("pci-hole")
pc_init1() passes
0x100000000ULL - below_4g_mem_size
to i440fx_init() as "pci_hole_size", which is then used as the size of
the "pci-hole" alias.
We should probably subtract the size of the flash from this, but I don't
know how to do that "elegantly". Yet another (output) parameter for
pc_memory_init()? Blech.
Or look up the end address of "system.flash" by name?
Thanks
Laszlo
