forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
2.1 KiB
99 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* From Coreboot file device/oprom/realmode/x86.h |
|
* |
|
* Copyright (C) 2007 Advanced Micro Devices, Inc. |
|
* Copyright (C) 2009-2010 coresystems GmbH |
|
*/ |
|
|
|
#ifndef _X86_LIB_BIOS_H |
|
#define _X86_LIB_BIOS_H |
|
|
|
#include <linux/linkage.h> |
|
|
|
#define REALMODE_BASE 0x600 |
|
|
|
#ifdef __ASSEMBLY__ |
|
|
|
#define PTR_TO_REAL_MODE(x) (x - asm_realmode_code + REALMODE_BASE) |
|
|
|
#else |
|
|
|
/* Convert a symbol address to our real mode area */ |
|
#define PTR_TO_REAL_MODE(sym)\ |
|
(void *)(REALMODE_BASE + ((char *)&(sym) - (char *)&asm_realmode_code)) |
|
|
|
/* |
|
* The following symbols cannot be used directly. They need to be fixed up |
|
* to point to the correct address location after the code has been copied |
|
* to REALMODE_BASE. Absolute symbols are not used because those symbols are |
|
* relocated by U-Boot. |
|
*/ |
|
extern unsigned char asm_realmode_call, __realmode_interrupt; |
|
extern unsigned char asm_realmode_buffer; |
|
|
|
#define DOWNTO8(A) \ |
|
union { \ |
|
struct { \ |
|
union { \ |
|
struct { \ |
|
uint8_t A##l; \ |
|
uint8_t A##h; \ |
|
} __packed; \ |
|
uint16_t A##x; \ |
|
} __packed; \ |
|
uint16_t h##A##x; \ |
|
} __packed; \ |
|
uint32_t e##A##x; \ |
|
} __packed; |
|
|
|
#define DOWNTO16(A) \ |
|
union { \ |
|
struct { \ |
|
uint16_t A; \ |
|
uint16_t h##A; \ |
|
} __packed; \ |
|
uint32_t e##A; \ |
|
} __packed; |
|
|
|
struct eregs { |
|
DOWNTO8(a); |
|
DOWNTO8(c); |
|
DOWNTO8(d); |
|
DOWNTO8(b); |
|
DOWNTO16(sp); |
|
DOWNTO16(bp); |
|
DOWNTO16(si); |
|
DOWNTO16(di); |
|
uint32_t vector; |
|
uint32_t error_code; |
|
uint32_t eip; |
|
uint32_t cs; |
|
uint32_t eflags; |
|
}; |
|
|
|
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 asm_realmode_code; |
|
extern unsigned int asm_realmode_code_size; |
|
|
|
asmlinkage void (*realmode_call)(u32 addr, u32 eax, u32 ebx, u32 ecx, u32 edx, |
|
u32 esi, u32 edi); |
|
|
|
asmlinkage void (*realmode_interrupt)(u32 intno, u32 eax, u32 ebx, u32 ecx, |
|
u32 edx, u32 esi, u32 edi); |
|
|
|
int int10_handler(void); |
|
int int12_handler(void); |
|
int int16_handler(void); |
|
int int1a_handler(void); |
|
#endif /*__ASSEMBLY__ */ |
|
|
|
#endif
|
|
|