hw: better i440 emulation

updated version of an old patch
http://xenon.stanford.edu/~eswierk/misc/qemu-linuxbios/qemu-piix-ram-size.patch
that together with
http://www.mail-archive.com/linuxbios@linuxbios.org/msg02390.html
(which is already in coreboot trunk) allows coreboot to autodetect the amount of RAM within qemu/kvm from a register in i440 northbridge.

The message on the old patch states:
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.

Signed-off-by: Bernhard M. Wiedemann <qemudevbmw@lsmod.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/hw/pc.h b/hw/pc.h
index 5f86b37fb2..d11a576be0 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -107,7 +107,7 @@ int pcspk_audio_init(qemu_irq *pic);
 struct PCII440FXState;
 typedef struct PCII440FXState PCII440FXState;
 
-PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int *piix_devfn, qemu_irq *pic);
+PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int *piix_devfn, qemu_irq *pic, int ram_size);
 void i440fx_set_smm(PCII440FXState *d, int val);
 void i440fx_init_memory_mappings(PCII440FXState *d);