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PPC: mac99: Move NVRAM to page boundary when necessary

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When running KVM we have to adhere to host page boundaries for memory slots.
Unfortunately the NVRAM on mac99 is a 4k RAM hole inside of an MMIO flash
area.

So if our host is configured with 64k page size, we can't use the mac99 target
with KVM. This is a real shame, as this limitation is not really an issue - we
can easily map NVRAM somewhere else and at least Linux and Mac OS X use it
at their new location.

So in that emergency case when it's about failing to run at all and moving NVRAM
to a place it shouldn't be at, choose the latter.

This patch enables -M mac99 with KVM on 64k page size hosts.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2014-07-11 03:24:39 +02:00
parent ef9514431d
commit 261265cc91
2 changed files with 11 additions and 2 deletions
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2
include/hw/ppc/ppc.h
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@ -92,7 +92,7 @@ enum {
#define FW_CFG_PPC_IS_KVM (FW_CFG_ARCH_LOCAL + 0x05)
#define FW_CFG_PPC_KVM_HC (FW_CFG_ARCH_LOCAL + 0x06)
#define FW_CFG_PPC_KVM_PID (FW_CFG_ARCH_LOCAL + 0x07)
/* OpenBIOS has FW_CFG_PPC_NVRAM_ADDR as +0x08 */
#define FW_CFG_PPC_NVRAM_ADDR (FW_CFG_ARCH_LOCAL + 0x08)
#define FW_CFG_PPC_BUSFREQ (FW_CFG_ARCH_LOCAL + 0x09)
#define PPC_SERIAL_MM_BAUDBASE 399193