diff options
| author | Stefan Reinauer <stepan@coresystems.de> | 2009-10-25 19:50:47 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2009-10-25 19:50:47 +0000 |
| commit | 074356ec819be284fb1e8d18a68678b72c5282da (patch) | |
| tree | 9f92a9da412d3cb8be7958390164fe44d4b7ec16 /util/x86emu/x86.c | |
| parent | 46a895e633a6b4bd3f4a8391529cc069a8a8d04b (diff) | |
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
Diffstat (limited to 'util/x86emu/x86.c')
| -rw-r--r-- | util/x86emu/x86.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/util/x86emu/x86.c b/util/x86emu/x86.c index 5c0422e826..af8bb1c8b2 100644 --- a/util/x86emu/x86.c +++ b/util/x86emu/x86.c @@ -29,7 +29,7 @@ #include <console.h> #endif -#define REALMODE_BASE ((void *)0x500) +#define REALMODE_BASE ((void *)0x600) struct realmode_idt { u16 offset, cs; @@ -41,8 +41,8 @@ extern unsigned char __idt_handler, __idt_handler_size; extern unsigned char __realmode_code, __realmode_code_size; extern unsigned char __run_optionrom, __run_interrupt; -void (*run_optionrom)(u32 devfn) = (void *)&__run_optionrom; -void (*vga_enable_console)(void) = (void *)&__run_interrupt; +void (*run_optionrom)(u32 devfn) __attribute__((regparm(0))) = (void *)&__run_optionrom; +void (*vga_enable_console)(void) __attribute__((regparm(0))) = (void *)&__run_interrupt; int (*intXX_handler[256])(struct eregs *regs) = { NULL }; @@ -127,9 +127,7 @@ void run_bios(struct device *dev, unsigned long addr) int i; /* clear vga bios data area */ - for (i = 0x400; i < 0x500; i++) { - *(unsigned char *) i = 0; - } + memset(0x400, 0, 0x200); /* Set up C interrupt handlers */ setup_interrupt_handlers(); |