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    • 3. 发明专利
    • Method for updating system firmware and computer
    • 更新系统固件和计算机的方法
    • JP2013156799A
    • 2013-08-15
    • JP2012016237
    • 2012-01-30
    • Lenovo Singapore Pte Ltdレノボ・シンガポール・プライベート・リミテッド
    • MORISHIGE YUSAKUHAGIWARA MIKIO
    • G06F11/00G06F21/57
    • PROBLEM TO BE SOLVED: To provide a method for surely updating system firmware.SOLUTION: An old CRTM (Core Root of Trust for Measurement) 100a is stored in a boot block 101 of a BIOS_ROM, and an old BIOS 117a, an old flash driver 119a and an old encrypted digest 121a are stored in a system block 103, and an old CRTM100a-1 is stored in a staging block 105. First, a new BIOS117b, a new flash driver 119b and a new encrypted digest 121b are written in the system block, and a new CRTM100b-1 is written in the staging block. After reset, a part of the old CRTM is executed, and the new CRTM is executed, and then the new flash driver is executed. The new CRTM of the staging block is written in the boot block by the new flash driver.
    • 要解决的问题:提供一种可靠地更新系统固件的方法。解决方案:将旧的CRTM(用于测量的信任的核心根)100a存储在BIOS_ROM的引导块101中,旧的BIOS 117a,旧的闪存驱动器 119a和旧的加密摘要121a存储在系统块103中,并且旧的CRTM100a-1存储在分段块105中。首先,将新的BIOS117b,新的闪存驱动器119b和新的加密摘要121b写入 系统块,并在分段块中写入一个新的CRTM100b-1。 复位后,执行旧CRTM的一部分,并执行新的CRTM,然后执行新的闪存驱动器。 新的闪存驱动程序在引导块中写入了分段模块的新CRTM。