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Option ROM init x86/x86emu update

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- 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
This commit is contained in:
Stefan Reinauer
2009-10-25 19:50:47 +00:00
committed by Stefan Reinauer
parent 46a895e633
commit 074356ec81
5 changed files with 17 additions and 10 deletions
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3
util/x86emu/x86_interrupts.c
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@ -206,6 +206,7 @@ int int15_handler(struct eregs *regs)
regs->eax = 0x860f;
break;
/* And now Intel IGD code */
#define BOOT_DISPLAY_DEFAULT 0
#define BOOT_DISPLAY_CRT (1 << 0)
#define BOOT_DISPLAY_TV (1 << 1)
#define BOOT_DISPLAY_EFP (1 << 2)
@ -217,7 +218,7 @@ int int15_handler(struct eregs *regs)
case 0x5f35:
regs->eax = 0x5f;
regs->ecx = BOOT_DISPLAY_LCD|BOOT_DISPLAY_CRT;
regs->ecx = BOOT_DISPLAY_DEFAULT;
res = 0;
break;
case 0x5f40: