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_SELECT 0x510 > 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 -0000 1.221 > +++ arch/amd64/amd64//vmm.c 10 Dec 2018 14:46:52 -0000 > @@ -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
