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qemu: reserve ports 

QEMU has a bunch of non-standard virtual devices on various I/O ports.
Allocate resources for them so the coreboot resource management knows
those ports are used.

Change-Id: I51a85967cf2dcd634b0c883210bb52c0c34c8283
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-on: http://review.coreboot.org/3851
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Gerd Hoffmann 2013-08-06 10:48:41 +02:00 committed by Patrick Georgi
parent 42e11f5a03
commit 05d3f49fc6
1 changed files with 30 additions and 0 deletions
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30
src/mainboard/emulation/qemu-i440fx/northbridge.c
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@ -28,6 +28,23 @@ static unsigned long qemu_get_high_memory_size(void)
return high;
}
static void qemu_reserve_ports(struct device *dev, unsigned int idx,
unsigned int base, unsigned int size,
const char *name)
{
unsigned int end = base + size -1;
struct resource *res;
printk(BIOS_DEBUG, "QEMU: reserve ioports 0x%04x-0x%04x [%s]\n",
base, end, name);
res = new_resource(dev, idx);
res->base = base;
res->size = size;
res->limit = 0xffff;
res->flags = IORESOURCE_IO | IORESOURCE_FIXED | IORESOURCE_STORED |
IORESOURCE_ASSIGNED;
}
static void cpu_pci_domain_set_resources(device_t dev)
{
assign_resources(dev->link_list);
@ -53,6 +70,19 @@ static void cpu_pci_domain_read_resources(struct device *dev)
if (high)
ram_resource(dev, idx++, 4 * 1024 * 1024, high);
/* Reserve I/O ports used by QEMU */
qemu_reserve_ports(dev, idx++, 0x0510, 0x02, "firmware-config");
qemu_reserve_ports(dev, idx++, 0x5658, 0x01, "vmware-port");
if (i440fx) {
qemu_reserve_ports(dev, idx++, 0xae00, 0x10, "pci-hotplug");
qemu_reserve_ports(dev, idx++, 0xaf00, 0x20, "cpu-hotplug");
qemu_reserve_ports(dev, idx++, 0xafe0, 0x04, "piix4-gpe0");
}
if (inb(CONFIG_CONSOLE_QEMU_DEBUGCON_PORT) == 0xe9) {
qemu_reserve_ports(dev, idx++, CONFIG_CONSOLE_QEMU_DEBUGCON_PORT, 1,
"debugcon");
}
#if !CONFIG_DYNAMIC_CBMEM
/* Leave some space for ACPI, PIRQ and MP tables */
high_tables_base = (tomk * 1024) - HIGH_MEMORY_SIZE;