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Diffstat (limited to 'src/device/oprom/realmode/x86.h')
-rw-r--r-- | src/device/oprom/realmode/x86.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/device/oprom/realmode/x86.h b/src/device/oprom/realmode/x86.h new file mode 100644 index 0000000000..7dfa60f996 --- /dev/null +++ b/src/device/oprom/realmode/x86.h @@ -0,0 +1,49 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Advanced Micro Devices, Inc. + * Copyright (C) 2009-2010 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#define REALMODE_BASE ((void *)0x600) + +struct realmode_idt { + u16 offset, cs; +}; + +void x86_exception(struct eregs *info); + +/* From x86_asm.S */ +extern unsigned char __idt_handler, __idt_handler_size; +extern unsigned char __realmode_code, __realmode_code_size; +extern unsigned char __realmode_call, __realmode_interrupt; +extern unsigned char __buffer; + +extern void (*realmode_call)(u32 addr, u32 eax, u32 ebx, u32 ecx, u32 edx, + u32 esi, u32 edi) __attribute__((regparm(0))); + +extern void (*realmode_interrupt)(u32 intno, u32 eax, u32 ebx, u32 ecx, u32 edx, + u32 esi, u32 edi) __attribute__((regparm(0))); + +#define FAKE_MEMORY_SIZE (1024*1024) // only 1MB +#define INITIAL_EBDA_SEGMENT 0xF600 +#define INITIAL_EBDA_SIZE 0x400 + +int int10_handler(void); +int int12_handler(void); +int int16_handler(void); +int int1a_handler(void); + |