Initial checkin for supermicro p4dc6

This also includes a bunch of my pending work including
- Updated serial code so we can compile in different serial port speeds
- Updates to the build system so that:
  - Makefile.settings holds all of the settings of the config variables
  - ldoptions and cpuflags are generated automatically with perl scripts
  - src/config/Config holds all of the architecture neutral make file settings
- Initial work on the P4 including how to use cache as ram
- Update to the ioapic code for the P4 because it delivers irqs on the system
  bus instead of an out of band bus
- Updated version of printf that doesn't need an intermediate buffer
  - logbuf_subr now handles the case when we want to use a log buffer
- video_subr handles the preliminary code for writing to a video device.
- Pending changes for the L440GX are merged in as well (hopefully I haven't
  messed then up since they were written).

src/include/logbuf_subr.h

@@ -0,0 +1,4 @@
+#ifndef LOGBUF_SUBR_H
+#define LOGBUF_SUBR_H
+
+#endif /* LOGBUF_SUBR_H */

src/include/pci_ids.h

@@ -1205,6 +1205,15 @@
 #define PCI_DEVICE_ID_INTEL_82801AB_5	0x2425
 #define PCI_DEVICE_ID_INTEL_82801AB_6	0x2426
 #define PCI_DEVICE_ID_INTEL_82801AB_8	0x2428
+
+#define PCI_DEVICE_ID_INTEL_82801BA_1E0	0x244e
+#define PCI_DEVICE_ID_INTEL_82801BA_1F0	0x2440
+#define PCI_DEVICE_ID_INTEL_82801BA_1F1	0x244b
+#define PCI_DEVICE_ID_INTEL_82801BA_1F2	0x2442
+#define PCI_DEVICE_ID_INTEL_82801BA_1F3	0x2443
+#define PCI_DEVICE_ID_INTEL_82801BA_1F4	0x2444
+#define PCI_DEVICE_ID_INTEL_82801BA_1F5	0x2445
+
 #define PCI_DEVICE_ID_INTEL_82820FW_0	0x2440
 #define PCI_DEVICE_ID_INTEL_82820FW_1	0x2442
 #define PCI_DEVICE_ID_INTEL_82820FW_2	0x2443

src/include/subr.h

@@ -5,6 +5,9 @@
 
 void displayinit(void);
 void display(char msg[]);
+void display_tx_byte(unsigned char byte);
+void display_tx_break(void);
+
 void error(char errmsg[]);
 void post_code(uint8_t value);
 

src/include/video_subr.h

@@ -0,0 +1,7 @@
+#ifndef VIDEO_SUBR_H
+#define VIDEO_SUBR_H
+
+void video_init(void);
+void video_tx_byte(unsigned char byte);
+
+#endif /* VIDEO_SUBR_H */