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-rw-r--r--drivers/firmware/pcdp.c24
-rw-r--r--drivers/firmware/pcdp.h33
2 files changed, 50 insertions, 7 deletions
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 839b44a7e08b..53c95c0bbf46 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -16,6 +16,7 @@
#include <linux/console.h>
#include <linux/efi.h>
#include <linux/serial.h>
+#include <asm/vga.h>
#include "pcdp.h"
static int __init
@@ -40,10 +41,27 @@ setup_serial_console(struct pcdp_uart *uart)
}
static int __init
-setup_vga_console(struct pcdp_vga *vga)
+setup_vga_console(struct pcdp_device *dev)
{
#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
- if (efi_mem_type(0xA0000) == EFI_CONVENTIONAL_MEMORY) {
+ u8 *if_ptr;
+
+ if_ptr = ((u8 *)dev + sizeof(struct pcdp_device));
+ if (if_ptr[0] == PCDP_IF_PCI) {
+ struct pcdp_if_pci if_pci;
+
+ /* struct copy since ifptr might not be correctly aligned */
+
+ memcpy(&if_pci, if_ptr, sizeof(if_pci));
+
+ if (if_pci.trans & PCDP_PCI_TRANS_IOPORT)
+ vga_console_iobase = if_pci.ioport_tra;
+
+ if (if_pci.trans & PCDP_PCI_TRANS_MMIO)
+ vga_console_membase = if_pci.mmio_tra;
+ }
+
+ if (efi_mem_type(vga_console_membase + 0xA0000) == EFI_CONVENTIONAL_MEMORY) {
printk(KERN_ERR "PCDP: VGA selected, but frame buffer is not MMIO!\n");
return -ENODEV;
}
@@ -95,7 +113,7 @@ efi_setup_pcdp_console(char *cmdline)
dev = (struct pcdp_device *) ((u8 *) dev + dev->length)) {
if (dev->flags & PCDP_PRIMARY_CONSOLE) {
if (dev->type == PCDP_CONSOLE_VGA) {
- return setup_vga_console((struct pcdp_vga *) dev);
+ return setup_vga_console(dev);
}
}
}
diff --git a/drivers/firmware/pcdp.h b/drivers/firmware/pcdp.h
index 1dc7c88b7b4d..e72cc47de33b 100644
--- a/drivers/firmware/pcdp.h
+++ b/drivers/firmware/pcdp.h
@@ -52,11 +52,34 @@ struct pcdp_uart {
u32 clock_rate;
u8 pci_prog_intfc;
u8 flags;
-};
+} __attribute__((packed));
+
+#define PCDP_IF_PCI 1
+
+/* pcdp_if_pci.trans */
+#define PCDP_PCI_TRANS_IOPORT 0x02
+#define PCDP_PCI_TRANS_MMIO 0x01
+
+struct pcdp_if_pci {
+ u8 interconnect;
+ u8 reserved;
+ u16 length;
+ u8 segment;
+ u8 bus;
+ u8 dev;
+ u8 fun;
+ u16 dev_id;
+ u16 vendor_id;
+ u32 acpi_interrupt;
+ u64 mmio_tra;
+ u64 ioport_tra;
+ u8 flags;
+ u8 trans;
+} __attribute__((packed));
struct pcdp_vga {
u8 count; /* address space descriptors */
-};
+} __attribute__((packed));
/* pcdp_device.flags */
#define PCDP_PRIMARY_CONSOLE 1
@@ -66,7 +89,9 @@ struct pcdp_device {
u8 flags;
u16 length;
u16 efi_index;
-};
+ /* next data is pcdp_if_pci or pcdp_if_acpi (not yet supported) */
+ /* next data is device specific type (currently only pcdp_vga) */
+} __attribute__((packed));
struct pcdp {
u8 signature[4];
@@ -81,4 +106,4 @@ struct pcdp {
u32 num_uarts;
struct pcdp_uart uart[0]; /* actual size is num_uarts */
/* remainder of table is pcdp_device structures */
-};
+} __attribute__((packed));