added PCI expansion ROM support,
works for some ATI and Nvidia AGP cards now.
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1851 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/include/device/pci_rom.h b/src/include/device/pci_rom.h
new file mode 100644
index 0000000..68c8e71
--- /dev/null
+++ b/src/include/device/pci_rom.h
@@ -0,0 +1,32 @@
+#include <arch/byteorder.h>
+#include <stddef.h>
+
+#define PCI_ROM_HDR 0xAA55
+#define PCI_DATA_HDR (uint32_t) ( ('R' << 24) | ('I' << 16) | ('C' << 8) | 'P' )
+
+#define PCI_RAM_IMAGE_START 0xD0000
+#define PCI_VGA_RAM_IMAGE_START 0xC0000
+
+struct rom_header {
+ uint16_t signature;
+ uint8_t size;
+ uint8_t init[3];
+ uint8_t reserved[0x12];
+ uint16_t data;
+};
+
+struct pci_data {
+ uint32_t signature;
+ uint16_t vendor;
+ uint16_t device;
+ uint16_t reserved_1;
+ uint16_t dlen;
+ uint8_t drevision;
+ uint8_t class_hi;
+ uint16_t class_lo;
+ uint16_t ilen;
+ uint16_t irevision;
+ uint8_t type;
+ uint8_t indicator;
+ uint16_t reserved_2;
+};