+
+struct hcdp_uart_desc {
+ u8 pad[45];
+};
+
+struct pcdp {
+ u8 signature[4]; /* should be 'HCDP' */
+ u32 length;
+ u8 rev; /* should be >=3 for pcdp, <3 for hcdp */
+ u8 sum;
+ u8 oem_id[6];
+ u64 oem_tableid;
+ u32 oem_rev;
+ u32 creator_id;
+ u32 creator_rev;
+ u32 num_type0;
+ struct hcdp_uart_desc uart[0]; /* num_type0 of these */
+ /* pcdp descriptors follow */
+} __attribute__((packed));
+
+struct pcdp_device_desc {
+ u8 type;
+ u8 primary;
+ u16 length;
+ u16 index;
+ /* interconnect specific structure follows */
+ /* device specific structure follows that */
+} __attribute__((packed));
+
+struct pcdp_interface_pci {
+ u8 type; /* 1 == pci */
+ u8 reserved;
+ u16 length;
+ u8 segment;
+ u8 bus;
+ u8 dev;
+ u8 fun;
+ u16 devid;
+ u16 vendid;
+ u32 acpi_interrupt;
+ u64 mmio_tra;
+ u64 ioport_tra;
+ u8 flags;
+ u8 translation;
+} __attribute__((packed));
+
+struct pcdp_vga_device {
+ u8 num_eas_desc;
+ /* ACPI Extended Address Space Desc follows */
+} __attribute__((packed));
+
+/* from pcdp_device_desc.primary */
+#define PCDP_PRIMARY_CONSOLE 0x01
+
+/* from pcdp_device_desc.type */
+#define PCDP_CONSOLE_INOUT 0x0
+#define PCDP_CONSOLE_DEBUG 0x1
+#define PCDP_CONSOLE_OUT 0x2
+#define PCDP_CONSOLE_IN 0x3
+#define PCDP_CONSOLE_TYPE_VGA 0x8
+
+#define PCDP_CONSOLE_VGA (PCDP_CONSOLE_TYPE_VGA | PCDP_CONSOLE_OUT)
+
+/* from pcdp_interface_pci.type */
+#define PCDP_IF_PCI 1
+
+/* from pcdp_interface_pci.translation */
+#define PCDP_PCI_TRANS_IOPORT 0x02
+#define PCDP_PCI_TRANS_MMIO 0x01
+
+#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
+static void
+sn_scan_pcdp(void)