📄 53c700.scr

📁 linux和2410结合开发用他可以生成2410所需的zImage文件
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; Script for the NCR (or symbios) 53c700 and 53c700-66 chip;; Copyright (C) 2001 James.Bottomley@HansenPartnership.com;;-----------------------------------------------------------------------------;;  ;;  This program is free software; you can redistribute it and/or modify;;  it under the terms of the GNU General Public License as published by;;  the Free Software Foundation; either version 2 of the License, or;;  (at your option) any later version.;;;;  This program is distributed in the hope that it will be useful,;;  but WITHOUT ANY WARRANTY; without even the implied warranty of;;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the;;  GNU General Public License for more details.;;;;  You should have received a copy of the GNU General Public License;;  along with this program; if not, write to the Free Software;;  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.;;;;-----------------------------------------------------------------------------;; This script is designed to be modified for the particular command in; operation.  The particular variables pertaining to the commands are:;ABSOLUTE	Device_ID = 0		; ID of target for commandABSOLUTE	MessageCount = 0	; Number of bytes in messageABSOLUTE	MessageLocation = 0	; Addr of messageABSOLUTE	CommandCount = 0	; Number of bytes in commandABSOLUTE	CommandAddress = 0	; Addr of CommandABSOLUTE	StatusAddress = 0	; Addr to receive status returnABSOLUTE	ReceiveMsgAddress = 0	; Addr to receive msg;; This is the magic component for handling scatter-gather.  Each of the; SG components is preceeded by a script fragment which moves the; necessary amount of data and jumps to the next SG segment.  The final; SG segment jumps back to .  However, this address is the first SG script; segment.;ABSOLUTE	SGScriptStartAddress = 0; The following represent status interrupts we use 3 hex digits for; this: 0xPRS where ; P:ABSOLUTE	AFTER_SELECTION 	= 0x100ABSOLUTE	BEFORE_CMD 		= 0x200ABSOLUTE	AFTER_CMD 		= 0x300ABSOLUTE	AFTER_STATUS 		= 0x400ABSOLUTE	AFTER_DATA_IN		= 0x500ABSOLUTE	AFTER_DATA_OUT		= 0x600ABSOLUTE	DURING_DATA_IN		= 0x700; R:ABSOLUTE	NOT_MSG_OUT 		= 0x10ABSOLUTE	UNEXPECTED_PHASE 	= 0x20ABSOLUTE	NOT_MSG_IN 		= 0x30ABSOLUTE	UNEXPECTED_MSG		= 0x40ABSOLUTE	MSG_IN			= 0x50ABSOLUTE	SDTR_MSG_R		= 0x60ABSOLUTE	REJECT_MSG_R		= 0x70ABSOLUTE	DISCONNECT		= 0x80ABSOLUTE	MSG_OUT			= 0x90ABSOLUTE	WDTR_MSG_R		= 0xA0; S:ABSOLUTE	GOOD_STATUS 		= 0x1; Combinations, since the script assembler can't process |ABSOLUTE	NOT_MSG_OUT_AFTER_SELECTION = 0x110ABSOLUTE	UNEXPECTED_PHASE_BEFORE_CMD = 0x220ABSOLUTE	UNEXPECTED_PHASE_AFTER_CMD = 0x320ABSOLUTE	NOT_MSG_IN_AFTER_STATUS = 0x430ABSOLUTE	GOOD_STATUS_AFTER_STATUS = 0x401ABSOLUTE	UNEXPECTED_PHASE_AFTER_DATA_IN = 0x520ABSOLUTE	UNEXPECTED_PHASE_AFTER_DATA_OUT = 0x620ABSOLUTE	UNEXPECTED_MSG_BEFORE_CMD = 0x240ABSOLUTE	MSG_IN_BEFORE_CMD = 0x250ABSOLUTE	MSG_IN_AFTER_CMD = 0x350ABSOLUTE	SDTR_MSG_BEFORE_CMD = 0x260ABSOLUTE	REJECT_MSG_BEFORE_CMD = 0x270ABSOLUTE	DISCONNECT_AFTER_CMD = 0x380ABSOLUTE	SDTR_MSG_AFTER_CMD = 0x360ABSOLUTE	WDTR_MSG_AFTER_CMD = 0x3A0ABSOLUTE	MSG_IN_AFTER_STATUS = 0x440ABSOLUTE	DISCONNECT_AFTER_DATA = 0x580ABSOLUTE	MSG_IN_AFTER_DATA_IN = 0x550ABSOLUTE	MSG_IN_AFTER_DATA_OUT = 0x650ABSOLUTE	MSG_OUT_AFTER_DATA_IN = 0x590ABSOLUTE	DATA_IN_AFTER_DATA_IN = 0x5a0ABSOLUTE	MSG_IN_DURING_DATA_IN = 0x750ABSOLUTE	DISCONNECT_DURING_DATA = 0x780;; Other interrupt conditions; ABSOLUTE	RESELECTED_DURING_SELECTION = 0x1000ABSOLUTE	COMPLETED_SELECTION_AS_TARGET = 0x1001ABSOLUTE	RESELECTION_IDENTIFIED = 0x1003;; Fatal interrupt conditions.  If you add to this, also add to the; array of corresponding messages;ABSOLUTE	FATAL = 0x2000ABSOLUTE	FATAL_UNEXPECTED_RESELECTION_MSG = 0x2000ABSOLUTE	FATAL_SEND_MSG = 0x2001ABSOLUTE	FATAL_NOT_MSG_IN_AFTER_SELECTION = 0x2002ABSOLUTE	FATAL_ILLEGAL_MSG_LENGTH = 0x2003ABSOLUTE	DEBUG_INTERRUPT	= 0x3000ABSOLUTE	DEBUG_INTERRUPT1 = 0x3001ABSOLUTE	DEBUG_INTERRUPT2 = 0x3002ABSOLUTE	DEBUG_INTERRUPT3 = 0x3003ABSOLUTE	DEBUG_INTERRUPT4 = 0x3004ABSOLUTE	DEBUG_INTERRUPT5 = 0x3005ABSOLUTE	DEBUG_INTERRUPT6 = 0x3006;; SCSI Messages we interpret in the script;ABSOLUTE	COMMAND_COMPLETE_MSG	= 0x00ABSOLUTE	EXTENDED_MSG		= 0x01ABSOLUTE	SDTR_MSG		= 0x01ABSOLUTE	SAVE_DATA_PTRS_MSG	= 0x02ABSOLUTE	RESTORE_DATA_PTRS_MSG	= 0x03ABSOLUTE	WDTR_MSG		= 0x03ABSOLUTE	DISCONNECT_MSG		= 0x04ABSOLUTE	REJECT_MSG		= 0x07ABSOLUTE	PARITY_ERROR_MSG	= 0x09ABSOLUTE	SIMPLE_TAG_MSG		= 0x20ABSOLUTE	IDENTIFY_MSG		= 0x80ABSOLUTE	IDENTIFY_MSG_MASK	= 0x7FABSOLUTE	TWO_BYTE_MSG		= 0x20ABSOLUTE	TWO_BYTE_MSG_MASK	= 0x0F; This is where the script beginsENTRY	StartUpStartUp:	SELECT	ATN Device_ID, Reselect	JUMP	Finish, WHEN STATUS	JUMP	SendIdentifyMsg, IF MSG_OUT	INT	NOT_MSG_OUT_AFTER_SELECTIONReselect:	WAIT	RESELECT SelectedAsTarget	INT	RESELECTED_DURING_SELECTION, WHEN MSG_IN	INT	FATAL_NOT_MSG_IN_AFTER_SELECTION	ENTRY	GetReselectionDataGetReselectionData:	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN	INT	RESELECTION_IDENTIFIED	ENTRY	GetReselectionWithTagGetReselectionWithTag:	MOVE	3, ReceiveMsgAddress, WHEN MSG_IN	INT	RESELECTION_IDENTIFIED		ENTRY	SelectedAsTargetSelectedAsTarget:; Basically tell the selecting device that there's nothing here	SET	TARGET	DISCONNECT	CLEAR	TARGET	INT	COMPLETED_SELECTION_AS_TARGET;; These are the messaging entries;; Send a message.  Message count should be correctly patched	ENTRY	SendMessageSendMessage:	MOVE	MessageCount, MessageLocation, WHEN MSG_OUTResumeSendMessage:	RETURN,	WHEN NOT MSG_OUT	INT	FATAL_SEND_MSG	ENTRY	SendMessagePhaseMismatchSendMessagePhaseMismatch:	CLEAR	ACK	JUMP	ResumeSendMessage;; Receive a message.  Need to identify the message to; receive it correctly	ENTRY	ReceiveMessageReceiveMessage:	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN;; Use this entry if we've just tried to look at the first byte; of the message and want to process it furtherProcessReceiveMessage:	JUMP	ReceiveExtendedMessage, IF EXTENDED_MSG	RETURN,	IF NOT TWO_BYTE_MSG, AND MASK TWO_BYTE_MSG_MASK	CLEAR	ACK	MOVE	1, ReceiveMsgAddress + 1, WHEN MSG_IN	RETURNReceiveExtendedMessage:	CLEAR	ACK	MOVE	1, ReceiveMsgAddress + 1, WHEN MSG_IN	JUMP	Receive1Byte, IF 0x01	JUMP	Receive2Byte, IF 0x02	JUMP	Receive3Byte, IF 0x03	JUMP	Receive4Byte, IF 0x04	JUMP	Receive5Byte, IF 0x05	INT	FATAL_ILLEGAL_MSG_LENGTHReceive1Byte:	CLEAR	ACK	MOVE	1, ReceiveMsgAddress + 2, WHEN MSG_IN	RETURNReceive2Byte:	CLEAR	ACK	MOVE	2, ReceiveMsgAddress + 2, WHEN MSG_IN	RETURNReceive3Byte:	CLEAR	ACK	MOVE	3, ReceiveMsgAddress + 2, WHEN MSG_IN	RETURNReceive4Byte:	CLEAR	ACK	MOVE	4, ReceiveMsgAddress + 2, WHEN MSG_IN	RETURNReceive5Byte:	CLEAR	ACK	MOVE	5, ReceiveMsgAddress + 2, WHEN MSG_IN	RETURN;; Come here from the message processor to ignore the message;	ENTRY	IgnoreMessageIgnoreMessage:	CLEAR	ACK	RETURN;; Come here to send a reply to a message;	ENTRY	SendMessageWithATNSendMessageWithATN:	SET	ATN	CLEAR	ACK	JUMP	SendMessageSendIdentifyMsg:	CALL	SendMessage	CLEAR	ATNIgnoreMsgBeforeCommand:	CLEAR	ACK	ENTRY	SendCommandSendCommand:	JUMP	Finish, WHEN STATUS	JUMP	MsgInBeforeCommand, IF MSG_IN	INT	UNEXPECTED_PHASE_BEFORE_CMD, IF NOT CMD	MOVE	CommandCount, CommandAddress, WHEN CMDResumeSendCommand:	JUMP	Finish, WHEN STATUS	JUMP	MsgInAfterCmd, IF MSG_IN	JUMP	DataIn, IF DATA_IN	JUMP	DataOut, IF DATA_OUT	INT	UNEXPECTED_PHASE_AFTER_CMDIgnoreMsgDuringData:	CLEAR	ACK	; fall through to MsgInDuringDataEntry MsgInDuringDataMsgInDuringData:;; Could be we have nothing more to transfer;	JUMP	Finish, WHEN STATUS	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN	JUMP	DisconnectDuringDataIn, IF DISCONNECT_MSG	JUMP	IgnoreMsgDuringData, IF SAVE_DATA_PTRS_MSG	JUMP	IgnoreMsgDuringData, IF RESTORE_DATA_PTRS_MSG	INT	MSG_IN_DURING_DATA_INMsgInAfterCmd:	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN	JUMP	DisconnectAfterCmd, IF DISCONNECT_MSG	JUMP	IgnoreMsgInAfterCmd, IF SAVE_DATA_PTRS_MSG	JUMP	IgnoreMsgInAfterCmd, IF RESTORE_DATA_PTRS_MSG	CALL	ProcessReceiveMessage	INT	MSG_IN_AFTER_CMD	CLEAR	ACK	JUMP	ResumeSendCommandIgnoreMsgInAfterCmd:	CLEAR	ACK	JUMP	ResumeSendCommandDisconnectAfterCmd:	CLEAR	ACK	WAIT	DISCONNECT	ENTRY	Disconnect1Disconnect1:	INT	DISCONNECT_AFTER_CMD	ENTRY	Disconnect2Disconnect2:; We return here after a reselection	CLEAR	ACK	JUMP	ResumeSendCommandMsgInBeforeCommand:	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN	JUMP	IgnoreMsgBeforeCommand, IF SAVE_DATA_PTRS_MSG	JUMP	IgnoreMsgBeforeCommand, IF RESTORE_DATA_PTRS_MSG	CALL	ProcessReceiveMessage	INT	MSG_IN_BEFORE_CMD	CLEAR	ACK	JUMP	SendCommandDataIn:	CALL	SGScriptStartAddressResumeDataIn:	JUMP	Finish, WHEN STATUS	JUMP	MsgInAfterDataIn, IF MSG_IN	JUMP	DataInAfterDataIn, if DATA_IN	INT	MSG_OUT_AFTER_DATA_IN, if MSG_OUT	INT	UNEXPECTED_PHASE_AFTER_DATA_INDataInAfterDataIn:	INT	DATA_IN_AFTER_DATA_IN	JUMP	ResumeDataInDataOut:	CALL	SGScriptStartAddressResumeDataOut:	JUMP	Finish, WHEN STATUS	JUMP	MsgInAfterDataOut, IF MSG_IN	INT	UNEXPECTED_PHASE_AFTER_DATA_OUTMsgInAfterDataIn:	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN	JUMP	DisconnectAfterDataIn, IF DISCONNECT_MSG	JUMP	IgnoreMsgAfterData, IF SAVE_DATA_PTRS_MSG	JUMP	IgnoreMsgAfterData, IF RESTORE_DATA_PTRS_MSG	CALL	ProcessReceiveMessage	INT	MSG_IN_AFTER_DATA_IN	CLEAR	ACK	JUMP	ResumeDataInDisconnectDuringDataIn:	CLEAR	ACK	WAIT	DISCONNECT	ENTRY	Disconnect3Disconnect3:	INT	DISCONNECT_DURING_DATA	ENTRY	Disconnect4Disconnect4:; we return here after a reselection	CLEAR	ACK	JUMP	ResumeSendCommandDisconnectAfterDataIn:	CLEAR	ACK	WAIT	DISCONNECT	ENTRY	Disconnect5Disconnect5:	INT	DISCONNECT_AFTER_DATA	ENTRY	Disconnect6Disconnect6:; we return here after a reselection	CLEAR	ACK	JUMP	ResumeDataInMsgInAfterDataOut:	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN	JUMP	DisconnectAfterDataOut, if DISCONNECT_MSG	JUMP	IgnoreMsgAfterData, IF SAVE_DATA_PTRS_MSG	JUMP	IgnoreMsgAfterData, IF RESTORE_DATA_PTRS_MSG	CALL	ProcessReceiveMessage	INT	MSG_IN_AFTER_DATA_OUT	CLEAR	ACK	JUMP	ResumeDataOutIgnoreMsgAfterData:	CLEAR	ACK; Data in and out do the same thing on resume, so pick one	JUMP	ResumeDataInDisconnectAfterDataOut:	CLEAR	ACK	WAIT	DISCONNECT	ENTRY	Disconnect7Disconnect7:	INT	DISCONNECT_AFTER_DATA	ENTRY	Disconnect8Disconnect8:; we return here after a reselection	CLEAR	ACK	JUMP	ResumeDataOutFinish:	MOVE	1, StatusAddress, WHEN STATUS	INT	NOT_MSG_IN_AFTER_STATUS, WHEN NOT MSG_IN	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN	JUMP	FinishCommandComplete, IF COMMAND_COMPLETE_MSG	CALL	ProcessReceiveMessage	INT	MSG_IN_AFTER_STATUS	ENTRY	FinishCommandCompleteFinishCommandComplete:	CLEAR	ACK	WAIT	DISCONNECT	ENTRY	Finish1Finish1:	INT	GOOD_STATUS_AFTER_STATUS	ENTRY	Finish2Finish2:
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