1297436 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種電腦資訊技術，特別是有關於一 種電腦平台主機控制單元資料燒錄控制方法及系統，其可 應用於搭載至一電腦平台，例如為一網路伺服器，且該伺 服器配置有一特定型式的主機管控單元，例如為BMC (Baseboard Management Controller)之主機管控單元，用以 ’ 對該BMC主機管控器提供一資料燒錄控制功能，以藉此 參而將BMC程式資料碼燒錄至該BMC主機管控單元。 【先前技術】 BMC (Baseboard Management Controller)為網路伺服 器中所常採用的一種主機管控單元，其可獨立運作而不必 受控於作業系統來監視及管控網路伺服器中的各項設備 (例如包括中央處理器、硬碟裝置、風扇式散熱裝置、電源 供應器、網路連結設備、等等）的操作狀況。日立公司 φ (Hitachi Corporation)所提供之H2168型晶片模組即為網路 - 伺服器所常採用的一種BMC主機管控單元。 於具體實施上，BMC主機管控單元係受控於電腦軔體 程式來執行其伺服器主機管控功能；因此每當伺服器製造 廠商新發展出新版的BMC程式資料碼時，使用者便有需 要對其網路伺服器中的BMC主機管控單元進行一更新程 序，藉此而將新版的BMC程式資料碼燒錄至BMC主機管 控單元。 目前習用之一種BMC主機控制單元資料燒錄方法為 5 18879 1297436 透過BMC主機控制單元之晶片模組上的Gpi〇 Purpose Input/Output)輪出入介面來將BMC主機控制單 元從正常模式（normal mode)切換至燒錄模式（flash mode)。然而此種作法於具體實施上的一項缺點在於不同 硬體規格或作業系統的伺服器主機板上通常設定有不同的 GPIO組態，因此於程式的開發上，便有需要針對各式不 同的伺服器平台上的GPIO組態來設計多個不同版本的 BMC資料燒錄控制程式_cutmty)，使得其應用上 極為不便且不符合開發上的成本經濟效益。〜 【發明内容】 #於以上所述習知技術之缺點，本發明之主要目的便 是在於提供-種電腦平台主機控制單元⑽燒錄控制方法 及系統，討義於各式之具有不同硬體規格和 的饲服器平台來對其中之繼主機控制單元 通用 之資料燒錄控制功能。 通用 本發明之電腦平台主機控制單元資料燒錄控制方法 設計來應用於搭載至—電腦平台，例如為網路飼 或桌上型個人電腦’用以對該電腦平台上的BMC主 制功能’以藉此而將_程 式貝枓碼燒錄至該BMC主機管控單元。 本發明之電腦平台主機控制單元資料燒錄控 至少包含:⑴回應—使用者操控的燒錄件出 燒錄要求^⑺㈣賴料求 中_號至該開機主控單元，令該開機主控單元回 6 18879 1297436 應地執行一系統管理t斷之燒錄模 該主機管控單元切換至燒錄模式· 、釦序，藉此而將 切換至燒錄模式之後，對該主機管),該主機管控單元被 程序，藉此而將—组程式資料碼=執仃一資料燒錄 以及⑷於該資料燒錄程序完成之後主機管控單元； 理中斷信號至該開機主控單元，對應之系統管 執:卜系統管理中斷之正常模式：換二序、主:空單元回應地 機管控單元切換至正常模式。 、 猎此而將該主 於實體架構上，本發明之電 ，控制系統至少包含^制單^資料 應一使用者操控的燒錄要求事件而發出一；錄^可回 (Β)—燒錄模式切換模組，其可回應凡、要求讯息， =燒錄要求訊息而發出一對; 該開機主控單元，令該開機主 g里__尨谠至 理中斷之燒錄模式切換程序，；此行-系統管 換至燒錄模式;⑹一燒錄控制 元被切換至焯轷槿及主機管控單 =刀換至线核式之後’對該主機管控單元執行 程序，藉此而將—組程式資料碼燒錄至該主機管押單 ，:且其可於該資料燒錄程序完成之後’發出上 讯息；以及⑼-正常模式切換模組，其可 模組所發出的摔钸& 錄控制 Μ 錄'a息而發出-對應之系統管理中斷 該開機主控單元，令該開機主控單元回應地執 士統官理中斷之正常模式切換程序，藉此而將該‘ 早兀切換至正常模式。 5 ^ 18879 7 1297436 -/本么明之電腦平台主機控制單元資料燒錄控制方法 及系統的特點在於透過BI0S的SMI系統管理中斷信號來 將fMC主機管控單元切換至燒錄模式；並進而於燒錄程 序完成之後，亦同樣地透過SMI系統管理中斷信號來將 BMC主機管控單元切換回正常模式。此特點可\本發^之 “电月®平口主機控制單元資料燒錄控制方法及系統適用於各 式之具有不同硬體規格和作業系統的祠服器平台來對其中 之BMC主機控制單元提供一通用之資料燒錄控制功能， 亦即用以實現本發明的軟體程式只要撰寫出一個版本， 可適用於各式之伺服器平台，因此應用上更為便利且符合 開發上的成本經濟效益。 【實施方式】 以下即配合所附之圖式 …一 ^ A 砰細揭鉻本發明之電腦平 主餘制單元資料燒錄控制方法及系統之實施例。 第1圖即顯示本發明之電腦平台主機控制單元 錄控制系統（如標號⑽所指之方塊）的應用方式。如圖戶 不’本，明之電腦平台主機控制單元資料燒錄控制系統 _於實際應用上係搭载至—電腦平台1G，例如為網路々 服窃或桌上型個人電腦’且該電腦平台10須至少配置 中央處理單元20、一開機主控單元3〇、和一主機管控 4〇;其中該開機主控單元例如為一 BI〇s(Basic工^ I:pnt/〇utPut System)晶片模組，而該主機管控單元則女 4 BMC (Baseboard Management Controller)^ ^ # ^ 〇 於具體實紅，該電財台料壯另㈣有—北ς紐 18879 8 1297436 (Northbridge) 50、一南橋模組（Southbridge) 60、和一超級 輸出入介面模組（Super Input/Output，SI0) 70 ;其中該 BIOS開機主控單元30和該BMC主機管控單元40均係透 過南橋模組60和北橋模組50來與中央處理單元20進行資 料交流。由於北橋模組50、南橋模組60、和SI0超級輸 出入介面模組70均為電腦資訊業界所習用及熟知之電腦 元件，因此以下將不對其功能作進一步詳細之說明。 ‘ 於實際應用上，本發明之電腦平台主機控制單元資料 ®燒錄控制系統100即可讓使用者用來對上述之BMC主機 管控單元40提供一資料燒錄控制功能，藉此而將一組BMC 程式資料碼202燒錄至該BMC主機管控單元40。 如第2圖所示，本發明之電腦平台主機控制單元資料 燒錄控制糸統100的物件導向元件模型（object-oriented component model)的基本架構至少包含：(a)—燒錄要求回 應模組110 ; (B)—燒錄模式切換模組120 ; (C)—燒錄控制 ❿模組130 ;以及（D)—正常模式切換模組14〇。於具體實施 .上’本發明之電腦平台主機控制單元資料燒錄控制系統 100可完全以電腦程式來實現，並將此電腦程式例如以一 軔體之附加楱組（add-on module)方式整合至該電腦平Λ 中的BIOS (Basic Input/Output System)基本輸出入系統或 作業系統，並藉由該中央處理單元20來執行而對BMC主 機管控單元40提供一資料燒錄控制功能。 以下即首先分別說明本發明之電腦平台主機控制單 元資料燒錄控制系統100中的各個構成模組丨1()、12〇、 18879 9 1297436 130、140的個別屬性及功能。 :=求回應模組n。可回應一使用者操控的燒錄要 求事件加而發出一燒錄要求訊息至燒錄模式切換模电 m。此使用者操控的燒錄要求事件加例如為使用者透過 該電腦平台1G上的-圖形化的使用者介面（未顯示於圖式) 來點選-圖形化的燒錄啟動按鍵、或使用者直接鍵入一声 錄要求指令至該電腦平台10。 701297436 IX. Description of the Invention: [Technical Field] The present invention relates to a computer information technology, and more particularly to a computer platform host control unit data burning control method and system, which can be applied to a computer platform For example, a network server, and the server is configured with a specific type of host management unit, such as a host management unit of a BMC (Baseboard Management Controller), for providing a data burning control for the BMC host controller. Function, in order to burn the BMC program data code to the BMC host control unit. [Prior Art] BMC (Baseboard Management Controller) is a kind of host management unit commonly used in network servers, which can operate independently without being controlled by the operating system to monitor and control various devices in the network server ( For example, operating conditions including a central processing unit, a hard disk device, a fan type heat sink, a power supply, a network connection device, and the like. The H2168 chip module provided by Hitachi Corporation φ (Hitachi Corporation) is a BMC host control unit commonly used in network-servers. In the specific implementation, the BMC host control unit is controlled by the computer program to perform its server host control function; therefore, whenever the server manufacturer newly develops a new version of the BMC program data code, the user needs to The BMC host management unit in the network server performs an update procedure, thereby burning the new version of the BMC program data code to the BMC host management unit. At present, a BMC host control unit data burning method is 5 18879 1297436. The BMC host control unit is switched from the normal mode through the Gpi〇Purpose Input/Output wheel interface on the chip module of the BMC host control unit. Switch to flash mode. However, a disadvantage of this implementation is that different hardware specifications or operating system server boards are usually set with different GPIO configurations, so in the development of the program, there is a need for different types of The GPIO configuration on the server platform to design multiple different versions of the BMC data burning control program _cutmty) makes it extremely inconvenient to apply and does not meet the cost-effectiveness of development. ~ [Summary of the Invention] # In the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a computer platform host control unit (10) programming control method and system, and to understand various hardware specifications And the feeding machine platform to the data burning control function common to the following host control unit. The computer platform host control unit data burning control method of the present invention is designed to be applied to a computer platform, such as a network feeding or desktop personal computer 'for the BMC master function on the computer platform' Thereby, the _ program shell code is burned to the BMC host management unit. The computer platform host control unit data burning control of the present invention at least includes: (1) response - user-controlled burning parts out of the burning request ^ (7) (four) to find the _ number to the booting main control unit, so that the booting main control unit Back to 6 18879 1297436 to perform a system management t-burning mode, the host control unit switches to the burning mode, and the button sequence, thereby switching to the programming mode, the host tube), the host control The unit is programmed to, by means of, the program code of the group = the data to be burned and (4) the host control unit after the completion of the data burning program; the interrupt signal is sent to the booting control unit, and the corresponding system is managed: The normal mode of system management interruption: change the second order, the main: empty unit responds to the ground control unit to switch to the normal mode. The hunting and the main body structure, the electric control system of the present invention at least includes a single device data to be issued by a user-controlled burning request event; recording ^ can be returned (Β) - burning The mode switching module can respond to the request message, the message request message, and the pair of programming messages to be sent; the power-on main control unit causes the power-on master g to __尨谠 to interrupt the programming mode switching procedure; This line - the system tube is switched to the programming mode; (6) the programming unit is switched to the 焯轷槿 and the host management unit = the knife is changed to the line nucleus after the program is executed on the host management unit, thereby The program data code is burned to the host management order, and it can 'send the message after the data burning program is completed; and (9) - the normal mode switching module, which can be wrestled & recorded by the module The control system records the 'a message' and the corresponding system management interrupts the power-on master unit, so that the power-on master unit responds to the normal mode switching procedure of the ground-breaking official system interrupt, thereby switching the 'early switch to Normal mode. 5 ^ 18879 7 1297436 - / This is the computer platform host control unit data burning control method and system is characterized by the BIMI SMI system management interrupt signal to switch the fMC host control unit to the burning mode; and then burn After the program is completed, the BMC host management unit is also switched back to the normal mode by the SMI system management interrupt signal. This feature can be used in the BMC host control unit of the "Power Month" flat-mouth host control unit data burning control method and system for various types of server platforms with different hardware specifications and operating systems. A general data burning control function, that is, a software program for implementing the present invention, can be applied to various server platforms as long as a version is written, so that the application is more convenient and conforms to the cost-effectiveness of development. [Embodiment] The following is an embodiment of a computer flat main residual unit data burning control method and system according to the accompanying drawings. The first embodiment shows the computer platform of the present invention. The host control unit records the control system (such as the block indicated by the label (10)). As shown in the figure, the computer platform host control unit data burning control system _ is applied to the computer platform 1G in practical applications. For example, a network hacking or desktop personal computer' and the computer platform 10 must be configured with at least a central processing unit 20, a booting main control unit 3, and a main The machine control unit is 4〇; wherein the boot main control unit is, for example, a BI〇s (Basic worker: I: pnt/〇utPut System) chip module, and the host control unit is a female 4 BMC (Baseboard Management Controller) ^ ^ # ^ 具体 具体 具体 具体 具体 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , SI0) 70; wherein the BIOS boot control unit 30 and the BMC host control unit 40 communicate with the central processing unit 20 through the south bridge module 60 and the north bridge module 50. Since the north bridge module 50 and the south bridge module The group 60 and the SI0 super input interface module 70 are computer components that are familiar and well-known in the computer information industry, so the following will not further explain the functions thereof. 'In practical applications, the computer platform host control of the present invention The unit data® programming control system 100 allows the user to provide a data burning control function to the BMC host management unit 40, thereby burning a set of BMC program data codes 202 to the BMC host control. As shown in FIG. 2, the basic architecture of the object-oriented component model of the computer platform host control unit data control system 100 of the present invention includes at least: (a) - programming requirements Response module 110; (B) - programming mode switching module 120; (C) - programming control module 130; and (D) - normal mode switching module 14". The computer platform host control unit data burning control system 100 can be completely implemented by a computer program, and the computer program is integrated into the BIOS of the computer platform, for example, by means of an add-on module. (Basic Input/Output System) The basic input/output system or the operating system is provided by the central processing unit 20 to provide a data burning control function to the BMC host management unit 40. The individual attributes and functions of the respective constituent modules 丨1(), 12〇, 18879 9 1297436 130, 140 in the computer platform host control unit data burning control system 100 of the present invention are first described below. := Seek response module n. In response to a user-controlled burn request event, a burn request message is sent to the burn mode switching mode m. The user-controlled burn request event is added, for example, to the user through the graphical user interface (not shown in the figure) on the computer platform 1G - the graphical burn start button, or the user Directly type a request command to the computer platform 10. 70
燒錄模式切換模組12G可回應上述之燒錄要求回應模 組110所發出的燒錄要求訊息而發出一對應之SMI (System Management Interrupt)系統管理中斷信號至則 開機主控單元30’令刪開機主控單元3〇回應:地執行— 系統管理中斷之燒錄模式切換程序，藉此而將—燒錄模式 致能信號透過該南橋模組60來傳送至BMC主機管控單元 40，令該BMC主機管控單元4G的操作模式從正^式几 (normal mode)被切換至燒錄模式（flash m〇de)。 燒錄控制模組130可於該BMC主機管控單元4〇的操 作模式被切換成燒錄模式之後，對該BMC主機管控單元$ 40執行-資料燒錄程序，藉此而將一組bmc程式資料石馬 2〇2燒錄至該BMC主機管控單元4〇 ;且其可於該資料燒 錄程序完成之後，發出一燒錄完成訊息。於具體實施上二 BMC程式貧料碼202例如係來自一光碟片或從一網站透過 網際網路（均未顯示於圖式）下載至該電腦平台1〇。 正常模式切換模組14 0可回應上述之燒錄控制模組 130所發出的燒錄完成訊息而發出一對應之讀系統管理 18879 10 1297436 ::=8開機主控單元3。，令—雛控單 此而將致 1 統管理中斷之正常模式切換程序，藉 BMC主機管广二4: Γ㈣橋—送至 作掇★ Λ 令該BMC主機管控單元40的操 、式攸k錄模式被切換回原先之正常模式。The programming mode switching module 12G can issue a corresponding SMI (System Management Interrupt) system management interrupt signal in response to the programming request message sent by the programming request response module 110 to the booting control unit 30' The power-on main control unit 3 responds to: the local execution-system management interrupt programming mode switching program, whereby the programming mode enable signal is transmitted to the BMC host management unit 40 through the south bridge module 60, and the BMC is enabled. The operation mode of the host management unit 4G is switched from the normal mode to the burn mode (flash m〇de). The programming control module 130 can perform a data burning process on the BMC host management unit $40 after the operation mode of the BMC host management unit 4 is switched to the programming mode, thereby using a set of bmc program data. The stone horse 2〇2 is burned to the BMC host control unit 4; and it can issue a burn completion message after the data burning program is completed. In the second embodiment, the BMC program code 202 is downloaded from a CD or downloaded from a website through the Internet (none of which is shown in the figure) to the computer platform. The normal mode switching module 140 can issue a corresponding read system management 18879 10 1297436 ::=8 boot master unit 3 in response to the burn completion message sent by the burn control module 130. The order of the BMC host management unit 40 is transferred to the normal mode switching procedure of the system management interrupt, by the BMC host tube 2: Γ (four) bridge - sent to the work 掇 ★ 令 Let the BMC host control unit 40 operation, 攸 k The recording mode is switched back to the original normal mode.
X下即利用—應用實例來說明本發明之電腦平A I控輸㈣j系統100於實際應用時犧方 U式資2 例中，假設使用者欲將—組新版之職 :新該_主機管控單元-中的舊版之-心 用者::時Γ:第1圖和第2圖’於實際應科，每當使 5 t Γ組新版之職程式資料碼加燒錄至BMC主 歲吕桉早几40,其即可於電腦平台1〇上發出一使用 =燒錄要求事件2(n，例如為透過一圖形化的使^ 的燒錄啟動按鍵、或直接鍵入一燒錄要 γ 4电腦平台10。此使用者操控的燒錄要求事件 Ρ可令燒錄要求回應模組11〇回應地發出一燒錄 ，息至燒錄模式切換模組12G，令燒錄模式切換模組⑽ :二二發：一對應之S M1系統管理中斷信號至則S開機 工早兀30,令則S開機主控單元3〇回應地一 ㈣中斷之燒錄模式切換程序’藉此而將—燒錄模式致能 W透過該南橋模組6〇來傳送至BMC主機管控單元扣， 令該BMC主機管控單元4G的操作模式從正常料被切換 ，18879 11 1297436 之ί彔。虽BMC主機管控單元40被切換至燒錄模式 ’①錄控制模組13〇即接著被啟動行 二!㈣該組康程式資料物燒二 -：二:ΓΓ;並進而於完成資料燒錄程序之後，發出 換:组換模組:4。，令增 ::控，元，，，機主控單= 常Γ’ g里中斷之正书拉式切換程序，藉此而將-正 批Γ能信號透過該南橋模組60來傳送至職主機管 模式被切換㈣先之正^ :1〇的#作模式從燒錄 管"元4二 常模式下，BMC主機 k早疋40即可執行新燒錄進來的bmc程式資料 以對^腦:台1()提供功能更為強大的主機管控功能。曰 制單I:: Si本發明提供了 一種新穎之電腦平台主機控 =早兀貝抖燒錄控财法及线，討搭鼓一電腦平 二=該電腦平台提供一主機管控單元資料軸 來二c、二透過 枝&拴早兀切換至燒錄模式；並進而於燒錄 之後’亦福地透過SMI系統f理巾斷信號來將 管控單元切換回正常模式。此特點可讓本發明之 -千口主機控制單元資料燒錄控制方法及系統適用於各 工之具有不同硬體規格和作㈣統的伺服器平台來對盆中 主機控制單元提供一通用之資料燒錄控制功能， 、P用以貫現本發明的軟體程式只要撰寫出一個版本，即 18879 12 I297436 可適用於各式之伺服器平台，因此應用上更為便利且符合 開务上的成本經濟效益。本發明因此較先前技術具有更佳 之進步性及實用性。 ^以上所述僅為本發明之較佳實施例而已，並非用以限 定本發明之實質技術内容的範圍。本發明之實質技術内容 *係廣義地定義於下述之申請專利範圍中。若任何他人所完 1 ‘成之技術實體或方法與下述之申請專利範圍所定義者為完 王相同、以為-種等效之變更，均將被視為涵蓋於本 明之申請專利範圍之中。 x 【圖 主機 方式 式簡單說明】 第1圖為一應用示意圖，用以顯示本發明之電腦平么 控制單元資料燒錄控制系統搭載至―電腦平台的應用口 、，弟2圖為一系統架構示意圖，用以顯示本發明之電月奴 平台主機控制單元資料燒錄控制系統的物件導向元件y 的基本架構。 果t 【主要元件符號說明】 10 20 30 40 50 電腦平台（網路伺服器） 中央處理單元（CPU) 開機主控單元（BIOS) 主機管控單元（BMC) 北橋模組（Northbridge) 南橋模組（Southbridge) 超級輸出入介面模組（SI0) 18879 13 70 1297436 、100 本發明之電腦平台主機控制單元資料燒錄控制系統 110 燒錄要求回應模組 120 燒錄模式切換模組 130 燒錄控制模組 140 正常模式切換模組 201 使用者操控的燒錄要求事件 % 4 202 BMC程式資料碼 14 18879Under the X-utilization-application example to illustrate the computer flat AI control transmission (four) j system 100 of the present invention in the actual application of the sacrificial U-type capital in 2 cases, assuming that the user wants to - the new version of the position: the new _ host management unit - The old version of the - heart users:: Γ Γ: Figure 1 and Figure 2 'in the actual application section, whenever the 5 t Γ group new version of the program information code burned to BMC main year Lu Wei As early as 40, it can send a use on the computer platform 1 = burn request event 2 (n, for example, through a graphical start button to burn the ^, or directly type a burn to γ 4 computer Platform 10. The user-controlled burn-in request event can cause the burn-in request response module 11 to respond to the issue of a burn-in to the programming mode switching module 12G to enable the programming mode switching module (10): Second round: a corresponding S M1 system management interrupt signal to the S start-up work as early as 30, so that the S boot control unit 3 〇 responds to a (four) interrupted burn mode switching program 'by this will be - burn mode The enablement is transmitted to the BMC host control unit button through the south bridge module 6〇, and the operation mode of the BMC host control unit 4G is enabled. Switched from the normal material, 18879 11 1297436. Although the BMC host control unit 40 is switched to the burning mode '1 recording control module 13 〇 then the line 2 is activated! (4) The group of program data burning two - : 二:ΓΓ; and after completing the data burning process, issue the change: group change module: 4., increase:: control, yuan,,, machine master control list = Chang Hao 'g interrupted the book Pull-type switching procedure, whereby the - positive batch signal can be transmitted through the south bridge module 60 to transfer to the host tube mode is switched (four) first positive ^ : 1 〇 #作 mode from the burning tube " yuan 4 In the second mode, the BMC host k can execute the new bmc program data to provide more powerful host control functions for the brain: 1 (1): Provided a novel computer platform host control = early 兀 抖 抖 录 录 录 录 电脑 , , = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Switch to the burn mode as early as possible; and then after the burn, 'Yi Fu's through the SMI system The element switches back to the normal mode. This feature allows the -1000 host control unit data burning control method and system of the present invention to be applied to various server hardware platforms having different hardware specifications and (four) systems to control the host in the basin. The unit provides a general data burning control function, and the software program used to implement the present invention is only required to write a version, that is, 18879 12 I297436 can be applied to various server platforms, so the application is more convenient and conforms. The present invention is therefore more advantageous and practical than the prior art. The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the technical contents of the present invention. . The technical contents of the present invention are broadly defined in the following patent claims. If any other person's technical entity or method is the same as the one defined in the patent application scope below, the equivalent of the change is considered to be covered by the scope of the patent application. . x [Simplified description of the host mode] FIG. 1 is a schematic diagram of an application for displaying the data control system of the computer control unit of the present invention is applied to the application port of the computer platform, and the figure 2 is a system architecture. The schematic diagram shows the basic structure of the object guiding component y of the data control system of the host control unit of the present invention. Fruit t [Main component symbol description] 10 20 30 40 50 Computer platform (network server) Central processing unit (CPU) Power-on master unit (BIOS) Host control unit (BMC) Northbridge module (Northbridge) South bridge module ( Southbridge) Super Input Interface Module (SI0) 18879 13 70 1297436 , 100 Computer Platform Host Control Unit Data Burning Control System 110 Burning Request Response Module 120 Burning Mode Switching Module 130 Burning Control Module 140 Normal mode switching module 201 User-controlled burning request event % 4 202 BMC program data code 14 18879