1/**************************************************************************** 2* 3* BIOS emulator and interface 4* to Realmode X86 Emulator Library 5* 6* Copyright (C) 2007 Freescale Semiconductor, Inc. 7* Jason Jin <Jason.jin@freescale.com> 8* 9* Copyright (C) 1996-1999 SciTech Software, Inc. 10* 11* ======================================================================== 12* 13* Permission to use, copy, modify, distribute, and sell this software and 14* its documentation for any purpose is hereby granted without fee, 15* provided that the above copyright notice appear in all copies and that 16* both that copyright notice and this permission notice appear in 17* supporting documentation, and that the name of the authors not be used 18* in advertising or publicity pertaining to distribution of the software 19* without specific, written prior permission. The authors makes no 20* representations about the suitability of this software for any purpose. 21* It is provided "as is" without express or implied warranty. 22* 23* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 24* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 25* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 26* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF 27* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR 28* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 29* PERFORMANCE OF THIS SOFTWARE. 30* 31* ======================================================================== 32* 33* Language: ANSI C 34* Environment: Any 35* Developer: Kendall Bennett 36* 37* Description: Internal header file for the BIOS emulator library. 38* 39* Jason ported this file to u-boot, Added some architecture 40* related Macro. 41* 42****************************************************************************/ 43 44#ifndef __BIOSEMUI_H 45#define __BIOSEMUI_H 46 47#include "biosemu.h" 48#include <asm/io.h> 49/*---------------------- Macros and type definitions ----------------------*/ 50 51#ifdef CONFIG_X86EMU_DEBUG 52#define DB(x) x 53#else 54#define DB(x) do{}while(0); 55#endif 56 57#define BIOS_SEG 0xfff0 58extern X86EMU_sysEnv _X86EMU_env; 59#define M _X86EMU_env 60 61/* Macros to read and write values to x86 emulator memory. Memory is always 62 * considered to be little endian, so we use macros to do endian swapping 63 * where necessary. 64 */ 65 66#ifdef __BIG_ENDIAN__ 67#define readb_le(base) *((u8*)(base)) 68#define readw_le(base) ((u16)readb_le(base) | ((u16)readb_le((base) + 1) << 8)) 69#define readl_le(base) ((u32)readb_le((base) + 0) | ((u32)readb_le((base) + 1) << 8) | \ 70 ((u32)readb_le((base) + 2) << 16) | ((u32)readb_le((base) + 3) << 24)) 71#define writeb_le(base, v) *((u8*)(base)) = (v) 72#define writew_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \ 73 writeb_le(base + 1, (v >> 8) & 0xff) 74#define writel_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \ 75 writeb_le(base + 1, (v >> 8) & 0xff), \ 76 writeb_le(base + 2, (v >> 16) & 0xff), \ 77 writeb_le(base + 3, (v >> 24) & 0xff) 78#else 79#define readb_le(base) *((u8*)(base)) 80#define readw_le(base) *((u16*)(base)) 81#define readl_le(base) *((u32*)(base)) 82#define writeb_le(base, v) *((u8*)(base)) = (v) 83#define writew_le(base, v) *((u16*)(base)) = (v) 84#define writel_le(base, v) *((u32*)(base)) = (v) 85#endif 86 87/**************************************************************************** 88REMARKS: 89Function codes passed to the emulated I/O port functions to determine the 90type of operation to perform. 91****************************************************************************/ 92typedef enum { 93 REG_READ_BYTE = 0, 94 REG_READ_WORD = 1, 95 REG_READ_DWORD = 2, 96 REG_WRITE_BYTE = 3, 97 REG_WRITE_WORD = 4, 98 REG_WRITE_DWORD = 5 99} RegisterFlags; 100 101/**************************************************************************** 102REMARKS: 103Function codes passed to the emulated I/O port functions to determine the 104type of operation to perform. 105****************************************************************************/ 106typedef enum { 107 PORT_BYTE = 1, 108 PORT_WORD = 2, 109 PORT_DWORD = 3, 110} PortInfoFlags; 111 112/**************************************************************************** 113REMARKS: 114Data structure used to describe the details for the BIOS emulator system 115environment as used by the X86 emulator library. 116 117HEADER: 118biosemu.h 119 120MEMBERS: 121type - Type of port access (1 = byte, 2 = word, 3 = dword) 122defVal - Default power on value 123finalVal - Final value 124****************************************************************************/ 125typedef struct { 126 u8 type; 127 u32 defVal; 128 u32 finalVal; 129} BE_portInfo; 130 131#define PM_inpb(port) inb(port) 132#define PM_inpw(port) inw(port) 133#define PM_inpd(port) inl(port) 134#define PM_outpb(port, val) outb(val, port) 135#define PM_outpw(port, val) outw(val, port) 136#define PM_outpd(port, val) outl(val, port) 137 138#define LOG_inpb(port) PM_inpb(port) 139#define LOG_inpw(port) PM_inpw(port) 140#define LOG_inpd(port) PM_inpd(port) 141#define LOG_outpb(port, val) PM_outpb(port, val) 142#define LOG_outpw(port, val) PM_outpw(port, val) 143#define LOG_outpd(port, val) PM_outpd(port, val) 144 145/*-------------------------- Function Prototypes --------------------------*/ 146 147/* bios.c */ 148 149void _BE_bios_init(u32 * intrTab); 150void _BE_setup_funcs(void); 151 152/* besys.c */ 153#define DEBUG_IO() (M.x86.debug & DEBUG_IO_TRACE_F) 154 155u8 X86API BE_rdb(u32 addr); 156u16 X86API BE_rdw(u32 addr); 157u32 X86API BE_rdl(u32 addr); 158void X86API BE_wrb(u32 addr, u8 val); 159void X86API BE_wrw(u32 addr, u16 val); 160void X86API BE_wrl(u32 addr, u32 val); 161 162u8 X86API BE_inb(X86EMU_pioAddr port); 163u16 X86API BE_inw(X86EMU_pioAddr port); 164u32 X86API BE_inl(X86EMU_pioAddr port); 165void X86API BE_outb(X86EMU_pioAddr port, u8 val); 166void X86API BE_outw(X86EMU_pioAddr port, u16 val); 167void X86API BE_outl(X86EMU_pioAddr port, u32 val); 168#endif 169/* __BIOSEMUI_H */ 170