/* SPDX-License-Identifier: GPL-2.0-only */ #ifndef __DEVICE_OPROM_REALMODE_X86_H__ #define __DEVICE_OPROM_REALMODE_X86_H__ #include <cpu/cpu.h> #include <stdint.h> #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; extern unsigned int __idt_handler_size; extern unsigned char __realmode_code; extern unsigned int __realmode_code_size; extern unsigned int (*realmode_call)(u32 addr, u32 eax, u32 ebx, u32 ecx, u32 edx, u32 esi, u32 edi) asmlinkage; extern unsigned int (*realmode_interrupt)(u32 intno, u32 eax, u32 ebx, u32 ecx, u32 edx, u32 esi, u32 edi) asmlinkage; #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); #endif /* __DEVICE_OPROM_REALMODE_X86_H__ */