| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #ifndef __DEVICE_OPROM_REALMODE_X86_H__ |
| #define __DEVICE_OPROM_REALMODE_X86_H__ |
| |
| #include <arch/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__ */ |