On Mon, Dec 10, 2018 at 05:29:39PM +0100, Claudio Jeker wrote:
> qemu has the fw_cfg mechanism to pass data from the emulator to the bios.
> SeaBIOS also includes fw_cfg support and so it makes sense to add this to
> vmd(4) as well. To make this happen the following IO ports need to be
> forwarded by vmm(4) to vmd(8).
> FW_CFG_IO_SELECT0x510
> FW_CFG_IO_DATA 0x511
> FW_CFG_IO_DMA_ADDR_HIGH 0x514
> FW_CFG_IO_DMA_ADDR_LOW 0x518
>
> It is possible to not use the DMA interface but I think it may be better
> to have it.
> --
> :wq Claudio
>
> Index: arch/amd64/amd64//vmm.c
> ===
> RCS file: /cvs/src/sys/arch/amd64/amd64/vmm.c,v
> retrieving revision 1.221
> diff -u -p -r1.221 vmm.c
> --- arch/amd64/amd64//vmm.c 7 Oct 2018 22:43:06 - 1.221
> +++ arch/amd64/amd64//vmm.c 10 Dec 2018 14:46:52 -
> @@ -5128,7 +5128,9 @@ svm_handle_inout(struct vcpu *vcpu)
> case IO_ICU2 ... IO_ICU2 + 1:
> case 0x3f8 ... 0x3ff:
> case ELCR0 ... ELCR1:
> - case 0x500 ... 0x50f:
> + case 0x500 ... 0x511:
> + case 0x514:
> + case 0x518:
> case 0xcf8:
> case 0xcfc ... 0xcff:
> case VMM_PCI_IO_BAR_BASE ... VMM_PCI_IO_BAR_END:
> @@ -5221,9 +5223,11 @@ vmx_handle_inout(struct vcpu *vcpu)
> case IO_ICU2 ... IO_ICU2 + 1:
> case 0x3f8 ... 0x3ff:
> case ELCR0 ... ELCR1:
> + case 0x500 ... 0x511:
> + case 0x514:
> + case 0x518:
> case 0xcf8:
> case 0xcfc ... 0xcff:
> - case 0x500 ... 0x50f:
> case VMM_PCI_IO_BAR_BASE ... VMM_PCI_IO_BAR_END:
> ret = EAGAIN;
> break;
>
ok mlarkin
