k7sem support

src/mainboard/elitegroup/k7sem/Config

@@ -15,7 +15,10 @@ mainboardinit cpu/p6/earlymtrr.inc
 option ENABLE_FIXED_AND_VARIABLE_MTRRS=1
 option FINAL_MAINBOARD_FIXUP=1
 option HAVE_PIRQ_TABLE=1
-option CONFIG_SIS_DISABLE_ETHERNET
+option DISABLE_INTERNAL_DEVICES
+
+# this makes ipl.S too big
+#option CONFIG_SIS_DISABLE_ETHERNET
 object mainboard.o
 object irq_tables.o
 keyboard pc80

src/mainboard/elitegroup/k7sem/irq_tables.c

@@ -1,27 +1,30 @@
+/* This file was generated by getpir.c, do not modify! 
+   (but if you do, please run checkpir on it to verify)
+   Contains the IRQ Routing Table dumped directly from your memory , wich BIOS sets up
+
+   Documentation at : http://www.microsoft.com/hwdev/busbios/PCIIRQ.HTM
+*/
+
 #include <arch/pirq_routing.h>
 
-#define CHECKSUM 0x14
 const struct irq_routing_table intel_irq_routing_table = {
-	PIRQ_SIGNATURE,	/* u32 signature */
-	PIRQ_VERSION,	/* u16 version   */
-	32+16*4,	/* there can be total 5 devices on the bus */
-	0x00,		/* Bus 0 */
-	0x08,		/* Device 1, Function 0 */
-	0x0000,		/* reserve IRQ 11, 9, 5, for PCI */
-	0x1039,		/* Silicon Integrated System */
-	0x0008,		/* SiS 85C503/5513 ISA Bridge */
-	0x00,		/*  u8 miniport_data  - "crap" */
+	PIRQ_SIGNATURE, /* u32 signature */
+	PIRQ_VERSION,   /* u16 version   */
+	32+16*6,        /* there can be total 6 devices on the bus */
+	0,           /* Where the interrupt router lies (bus) */
+	0x8,           /* Where the interrupt router lies (dev) */
+	0x828,         /* IRQs devoted exclusively to PCI usage */
+	0x1039,         /* Vendor */
+	0x8,         /* Device */
+	0,         /* Crap (miniport) */
 	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */
-	CHECKSUM,	/*  u8 checksum       - mod 256 checksum must give zero */
+	0x1b,         /*  u8 checksum , this hase to set to some value that would give 0 after the sum of all bytes for this structure (including checksum) */
 	{
-		/* bus, devfn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu  */
-		{0x00, 0x08, {{0x41, 0xdcb8}, {0x42, 0xdcb8}, {0x43, 0xdcb8}, {0x44, 0xdcb8}},
-		 0x00, 0x00},
-		{0x00, 0x10, {{0x41, 0xdcb8}, {0x42, 0xdcb8}, {0x43, 0xdcb8}, {0x44, 0xdcb8}},
-		 0x00, 0x00},
-		{0x00, 0x48, {{0x41, 0xdcb8}, {0x42, 0xdcb8}, {0x43, 0xdcb8}, {0x44, 0xdcb8}},
-		 0x01, 0x00},
-		{0x00, 0x58, {{0x43, 0xdcb8}, {0x44, 0xdcb8}, {0x41, 0xdcb8}, {0x42, 0xdcb8}},
-		 0x02, 0x00},
+		{0,0x48, {{0x42, 0xdef8}, {0x43, 0xdef8}, {0x44, 0xdef8}, {0x41, 0xdef8}}, 0x1, 0},
+		{0,0x58, {{0x43, 0xdef8}, {0x44, 0xdef8}, {0x41, 0xdef8}, {0x42, 0xdef8}}, 0x2, 0},
+		{0,0x68, {{0x44, 0xdef8}, {0x41, 0xdef8}, {0x42, 0xdef8}, {0x43, 0xdef8}}, 0x3, 0},
+		{0,0x1, {{0x61, 0xdef8}, {0, 0xdef8}, {0, 0xdef8}, {0, 0xdef8}}, 0, 0},
+		{0,0x10, {{0x41, 0xdef8}, {0x42, 0xdef8}, {0x43, 0xdef8}, {0x44, 0xdef8}}, 0, 0},
+		{0,0xa, {{0x41, 0xdef8}, {0x42, 0xdef8}, {0x43, 0xdef8}, {0x44, 0xdef8}}, 0, 0},
 	}
 };

src/mainboard/elitegroup/k7sem/mainboard.c

@@ -13,8 +13,21 @@ final_mainboard_fixup(void)
 	void final_southbridge_fixup(void);
 	void final_superio_fixup(void);
 	extern unsigned long slotsizeM[];
+
 	printk_info("elitegroup k7sem (and similar)...");
 
+#if 0
+	// THIS WORKS in the sense of turning it off. 
+	// but it happens too late in the game.
+	printk_info("disabling sis 900 ethernet, old val 0x%x\n", 
+		    pcibios_read_config_byte(0, 0x8, 0x7c));
+
+        pcibios_write_config_byte(0, 0x8, 0x7c, 0x0f);
+
+	printk_info("disabling sis 900 ethernet, new val 0x%x\n", 
+		    pcibios_read_config_byte(0, 0x8, 0x7c));
+#endif
+
 	// we need to fix up the K7 MSRs. 
 	// to do this, we get the DIMM sizes in slot1 and 2, and 
 	// call fixk7msr_2dimms

src/northsouthbridge/sis/730/ipl.S

@@ -55,10 +55,6 @@ sis730spd_start:
 
 	movw	$0x5501, %ax			# Mode# enable, this bit
 	CALL_SP(write_pci_register)		# should be set before sizing.
-#ifdef CONFIG_SIS_DISABLE_ETHERNET
-	mowv $0x7c0f, %ax
-	CALL_SP(write_lpc_register)
-#endif
 
 #ifdef SIZE_ALL
 	xorw	%bx, %bx			# clear %fs, %fs is used as "bitmap" of