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Enable fw_cfg DMA interface for x86 

Enable the fw_cfg DMA interface for all the x86 platforms.

Based on Gerd Hoffman's initial implementation.

Signed-off-by: Marc Marí <markmb@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc Marí 2015-10-08 17:02:57 +02:00 committed by Gerd Hoffmann
parent 0b341a85ca
commit c886fc4c20
1 changed files with 5 additions and 3 deletions
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8
hw/i386/pc.c
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@ -752,14 +752,15 @@ static void pc_build_smbios(FWCfgState *fw_cfg)
}
}
static FWCfgState *bochs_bios_init(void)
static FWCfgState *bochs_bios_init(AddressSpace *as)
{
FWCfgState *fw_cfg;
uint64_t *numa_fw_cfg;
int i, j;
unsigned int apic_id_limit = pc_apic_id_limit(max_cpus);
fw_cfg = fw_cfg_init_io(BIOS_CFG_IOPORT);
fw_cfg = fw_cfg_init_io_dma(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 4, as);
/* FW_CFG_MAX_CPUS is a bit confusing/problematic on x86:
*
* SeaBIOS needs FW_CFG_MAX_CPUS for CPU hotplug, but the CPU hotplug
@ -1393,7 +1394,8 @@ FWCfgState *pc_memory_init(PCMachineState *pcms,
option_rom_mr,
1);
fw_cfg = bochs_bios_init();
fw_cfg = bochs_bios_init(&address_space_memory);
rom_set_fw(fw_cfg);
if (guest_info->has_reserved_memory && pcms->hotplug_memory.base) {