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