mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 15:26:03 +09:00
b3521f2e49
At present there are DEBUG options spread around the place. If you enable one and not another you can end up with an emulator that does not work, since each file can have a different view of what the registers look like. To fix this, create a global CONFIG_X86EMU_DEBUG option that keeps everything consistent. Signed-off-by: Simon Glass <sjg@chromium.org>
170 lines
5.8 KiB
C
170 lines
5.8 KiB
C
/****************************************************************************
|
|
*
|
|
* BIOS emulator and interface
|
|
* to Realmode X86 Emulator Library
|
|
*
|
|
* Copyright (C) 2007 Freescale Semiconductor, Inc.
|
|
* Jason Jin <Jason.jin@freescale.com>
|
|
*
|
|
* Copyright (C) 1996-1999 SciTech Software, Inc.
|
|
*
|
|
* ========================================================================
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and
|
|
* its documentation for any purpose is hereby granted without fee,
|
|
* provided that the above copyright notice appear in all copies and that
|
|
* both that copyright notice and this permission notice appear in
|
|
* supporting documentation, and that the name of the authors not be used
|
|
* in advertising or publicity pertaining to distribution of the software
|
|
* without specific, written prior permission. The authors makes no
|
|
* representations about the suitability of this software for any purpose.
|
|
* It is provided "as is" without express or implied warranty.
|
|
*
|
|
* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
|
|
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
|
|
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
* PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* ========================================================================
|
|
*
|
|
* Language: ANSI C
|
|
* Environment: Any
|
|
* Developer: Kendall Bennett
|
|
*
|
|
* Description: Internal header file for the BIOS emulator library.
|
|
*
|
|
* Jason ported this file to u-boot, Added some architecture
|
|
* related Macro.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __BIOSEMUI_H
|
|
#define __BIOSEMUI_H
|
|
|
|
#include "biosemu.h"
|
|
#include <asm/io.h>
|
|
/*---------------------- Macros and type definitions ----------------------*/
|
|
|
|
#ifdef CONFIG_X86EMU_DEBUG
|
|
#define DB(x) x
|
|
#else
|
|
#define DB(x) do{}while(0);
|
|
#endif
|
|
|
|
#define BIOS_SEG 0xfff0
|
|
extern X86EMU_sysEnv _X86EMU_env;
|
|
#define M _X86EMU_env
|
|
|
|
/* Macros to read and write values to x86 emulator memory. Memory is always
|
|
* considered to be little endian, so we use macros to do endian swapping
|
|
* where necessary.
|
|
*/
|
|
|
|
#ifdef __BIG_ENDIAN__
|
|
#define readb_le(base) *((u8*)(base))
|
|
#define readw_le(base) ((u16)readb_le(base) | ((u16)readb_le((base) + 1) << 8))
|
|
#define readl_le(base) ((u32)readb_le((base) + 0) | ((u32)readb_le((base) + 1) << 8) | \
|
|
((u32)readb_le((base) + 2) << 16) | ((u32)readb_le((base) + 3) << 24))
|
|
#define writeb_le(base, v) *((u8*)(base)) = (v)
|
|
#define writew_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \
|
|
writeb_le(base + 1, (v >> 8) & 0xff)
|
|
#define writel_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \
|
|
writeb_le(base + 1, (v >> 8) & 0xff), \
|
|
writeb_le(base + 2, (v >> 16) & 0xff), \
|
|
writeb_le(base + 3, (v >> 24) & 0xff)
|
|
#else
|
|
#define readb_le(base) *((u8*)(base))
|
|
#define readw_le(base) *((u16*)(base))
|
|
#define readl_le(base) *((u32*)(base))
|
|
#define writeb_le(base, v) *((u8*)(base)) = (v)
|
|
#define writew_le(base, v) *((u16*)(base)) = (v)
|
|
#define writel_le(base, v) *((u32*)(base)) = (v)
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function codes passed to the emulated I/O port functions to determine the
|
|
type of operation to perform.
|
|
****************************************************************************/
|
|
typedef enum {
|
|
REG_READ_BYTE = 0,
|
|
REG_READ_WORD = 1,
|
|
REG_READ_DWORD = 2,
|
|
REG_WRITE_BYTE = 3,
|
|
REG_WRITE_WORD = 4,
|
|
REG_WRITE_DWORD = 5
|
|
} RegisterFlags;
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function codes passed to the emulated I/O port functions to determine the
|
|
type of operation to perform.
|
|
****************************************************************************/
|
|
typedef enum {
|
|
PORT_BYTE = 1,
|
|
PORT_WORD = 2,
|
|
PORT_DWORD = 3,
|
|
} PortInfoFlags;
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Data structure used to describe the details for the BIOS emulator system
|
|
environment as used by the X86 emulator library.
|
|
|
|
HEADER:
|
|
biosemu.h
|
|
|
|
MEMBERS:
|
|
type - Type of port access (1 = byte, 2 = word, 3 = dword)
|
|
defVal - Default power on value
|
|
finalVal - Final value
|
|
****************************************************************************/
|
|
typedef struct {
|
|
u8 type;
|
|
u32 defVal;
|
|
u32 finalVal;
|
|
} BE_portInfo;
|
|
|
|
#define PM_inpb(port) inb(port+VIDEO_IO_OFFSET)
|
|
#define PM_inpw(port) inw(port+VIDEO_IO_OFFSET)
|
|
#define PM_inpd(port) inl(port+VIDEO_IO_OFFSET)
|
|
#define PM_outpb(port,val) outb(val,port+VIDEO_IO_OFFSET)
|
|
#define PM_outpw(port,val) outw(val,port+VIDEO_IO_OFFSET)
|
|
#define PM_outpd(port,val) outl(val,port+VIDEO_IO_OFFSET)
|
|
|
|
#define LOG_inpb(port) PM_inpb(port)
|
|
#define LOG_inpw(port) PM_inpw(port)
|
|
#define LOG_inpd(port) PM_inpd(port)
|
|
#define LOG_outpb(port,val) PM_outpb(port,val)
|
|
#define LOG_outpw(port,val) PM_outpw(port,val)
|
|
#define LOG_outpd(port,val) PM_outpd(port,val)
|
|
|
|
/*-------------------------- Function Prototypes --------------------------*/
|
|
|
|
/* bios.c */
|
|
|
|
void _BE_bios_init(u32 * intrTab);
|
|
void _BE_setup_funcs(void);
|
|
|
|
/* besys.c */
|
|
#define DEBUG_IO() (M.x86.debug & DEBUG_IO_TRACE_F)
|
|
|
|
u8 X86API BE_rdb(u32 addr);
|
|
u16 X86API BE_rdw(u32 addr);
|
|
u32 X86API BE_rdl(u32 addr);
|
|
void X86API BE_wrb(u32 addr, u8 val);
|
|
void X86API BE_wrw(u32 addr, u16 val);
|
|
void X86API BE_wrl(u32 addr, u32 val);
|
|
|
|
u8 X86API BE_inb(X86EMU_pioAddr port);
|
|
u16 X86API BE_inw(X86EMU_pioAddr port);
|
|
u32 X86API BE_inl(X86EMU_pioAddr port);
|
|
void X86API BE_outb(X86EMU_pioAddr port, u8 val);
|
|
void X86API BE_outw(X86EMU_pioAddr port, u16 val);
|
|
void X86API BE_outl(X86EMU_pioAddr port, u32 val);
|
|
#endif
|
|
/* __BIOSEMUI_H */
|