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    Platform hardening for bootloaders via reference firmware
    1.
    发明授权
    Platform hardening for bootloaders via reference firmware 有权

    公开(公告)号：US12124856B2

    公开(公告)日：2024-10-22

    申请号：US17211549

    申请日：2021-03-24

    Applicant: Intel Corporation

    Inventor： Subrata Banik ,  Aamir Bohra ,  Vincent Zimmer ,  Robert E. Gough ,  Xiang Ma ,  Jabeena Begum Gaibusab

    IPC: G06F9/4401 ,  G06F8/65 ,  G06F15/78 ,  G06F21/57

    CPC classification number: G06F9/4411 ,  G06F15/7807 ,  G06F8/65 ,  G06F9/4401 ,  G06F21/572

    Abstract: During a computing system boot sequence, reference firmware provided by a computing system component supplies Advanced Configuration and Power Interface (ACPI) code that generates ACPI tables and definition blocks to a bootloader. During a boot sequence, the reference firmware receives an indication from the bootloader which components the reference firmware is to initialize. As part of component initialization performed by the reference firmware, the reference firmware populates hand-off data structures (e.g., hand-off blocks (HOBs)) with ACPI code (AML code) that, when executed by the bootloader, generates and populates ACPI tables (e.g., DSDT and SSDT tables) and definition blocks with information pertinent to the initialization and runtime management of computing system components. Component initialization and runtime configuration workarounds can be implemented in the bootloader incorporating reference firmware updates provided by the component vendor.

    PRE-OPERATING SYSTEM DISPLAY MANAGEMENT
    6.
    发明申请
    PRE-OPERATING SYSTEM DISPLAY MANAGEMENT 有权

    公开(公告)号：US20210357234A1

    公开(公告)日：2021-11-18

    申请号：US17390268

    申请日：2021-07-30

    Applicant: Intel Corporation

    Inventor： Subrata Banik ,  Kunjal Parikh ,  Rajaram Regupathy ,  Barnali Sarkar

    IPC: G06F9/4401 ,  G06F1/3234

    Abstract: Particular embodiments described herein provide for an electronic device that includes a battery, a display, an embedded controller to determine a battery condition and set an indicator when then battery condition is at a low power state, and a basic input/output system (BIOS), where, before an operating system stage of a boot process, the BIOS sets a brightness of the display at a native brightness if the indicator is not set and sets the brightness of the display at a low power brightness to reduce the brightness of the display if the indicator is set. In an example, the embedded controller sets the indicator before the central processing unit is reset during the boot process.

    BOOT PROCESS FOR EARLY DISPLAY INITIALIZATION AND VISUALIZATION
    7.
    发明申请
    BOOT PROCESS FOR EARLY DISPLAY INITIALIZATION AND VISUALIZATION 有权

    公开(公告)号：US20210004241A1

    公开(公告)日：2021-01-07

    申请号：US17025350

    申请日：2020-09-18

    Applicant: Intel Corporation

    Inventor： Subrata Banik ,  Maulik V. Vaghela ,  Rajaram Regupathy ,  Vincent Zimmer ,  Asad Azam

    IPC: G06F9/4401 ,  G06F9/30 ,  G06F12/0811

    Abstract: Embodiments are directed to improving boot process for early display initialization and visualization. An embodiment of a system includes a plurality of processor cores; a cache coupled to the plurality of processor cores; and a controller circuit to: initialize a portion of the cache as static memory for hardware initialization code usage before beginning execution of the hardware initialization code after a power on of the hardware processor; and cause initialization of a display device to be performed using the portion of the cache, the initialization of the display device performed independently of initialization of dynamic memory of the hardware processor.

    Phased boot process to dynamically initialize devices in a verified environment
    9.
    发明授权
    Phased boot process to dynamically initialize devices in a verified environment 有权

    公开(公告)号：US11816220B2

    公开(公告)日：2023-11-14

    申请号：US17032369

    申请日：2020-09-25

    Applicant: Intel Corporation

    Inventor： Rajaram Regupathy ,  Subrata Banik ,  Vincent Zimmer ,  Saranya Gopal

    IPC: G06F21/57 ,  G06F21/79

    CPC classification number: G06F21/575 ,  G06F21/572 ,  G06F21/79

    Abstract: Embodiments are directed to a phased boot process to dynamically initialize devices in a verified environment. An embodiment of a system includes a memory device to store platform initialization firmware to cause the processing system to: initialize, during a boot process, a portion of the one or more memory modules as system management random access memory (SMRAM) for system management mode (SMM) usage; generate an SMM component in the SMRAM, the SMM component comprising an SMM handler routine to handle dynamic intellectual property (IP) management operations corresponding to the plurality of hardware components; register the SMM handler routine with an SMM interrupt (SMI) for identification of SMM events from an operating system (OS); and generate an SMM dispatcher in the SMRAM, the SMM dispatcher to create an instance of the SMM handler routine in the SMRAM in response to receiving an SMI from the OS during runtime of the processing system.

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