Option ROM init x86/x86emu update

- use default display in int 15 5f35
- move REALMODE_BASE to 0x600, 0x500 can be BDA
- add regparm for assembler functions
- use memset instead of own implementation
- YABEL: copy back the IVT, BDA and VBIOS. Some Xorg drivers require this.
- YABEL: use hardware timer instead of emulated timer, because the emulated
  timer's base is never initialized (leading to division by zero if the 
  timer is really used)

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4852 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

util/x86emu/yabel/compat/functions.c

@@ -17,6 +17,7 @@
 #ifndef CONFIG_COREBOOT_V2
 #include <config.h>
 #endif
+#include <string.h>
 #include <device/device.h>
 
 #define VMEM_SIZE 1024 *1024 /* 1 MB */
@@ -33,6 +34,9 @@ u32 biosemu(u8 *biosmem, u32 biosmem_size, struct device *dev,
 void run_bios(struct device * dev, unsigned long addr)
 {
 	biosemu(vmem, VMEM_SIZE, dev, addr);
+	memcpy(0x0, vmem + 0x0, 0x400);
+	memcpy(0x400, vmem + 0x400, 0x100);
+	memcpy(0xc0000, vmem + 0xc0000, 0x10000);
 }
 
 u64 get_time(void)

util/x86emu/yabel/io.c

@@ -36,6 +36,9 @@ extern int write_io(void *, unsigned int, size_t);
 //defined in net-snk/kernel/timer.c
 extern u64 get_time(void);
 
+#ifdef COREBOOT_V2
+#include <arch/io.h>
+#else
 // these are not used, only needed for linking,  must be overridden using X86emu_setupPioFuncs
 // with the functions and struct below
 void
@@ -82,7 +85,7 @@ inl(u16 port)
 	HALT_SYS();
 	return 0;
 }
-
+#endif
 u32 pci_cfg_read(X86EMU_pioAddr addr, u8 size);
 void pci_cfg_write(X86EMU_pioAddr addr, u32 val, u8 size);
 u8 handle_port_61h(void);
@@ -106,7 +109,8 @@ my_inb(X86EMU_pioAddr addr)
 		switch (addr) {
 		case 0x61:
 			//8254 KB Controller / Timer Port
-			rval = handle_port_61h();
+			// rval = handle_port_61h();
+			rval = inb(0x61);
 			//DEBUG_PRINTF_IO("%s(%04x) KB / Timer Port B --> %02x\n", __func__, addr, rval);
 			return rval;
 			break;