公开(公告)号：US20180349608A1

公开(公告)日：2018-12-06

申请号：US15721365

申请日：2017-09-29

Applicant: Apple Inc.

Inventor： Joshua P. de Cesare ,  Timothy R. Paaske ,  Xeno S. Kovah ,  Nikolaj Schlej ,  Jeffrey R. Wilcox ,  Ezekiel T. Runyon ,  Hardik K. Doshi ,  Kevin H. Alderfer ,  Corey T. Kallenberg

IPC: G06F21/57 ,  G06F9/44 ,  G06F21/44

CPC classification number: G06F21/575

Abstract: A method and apparatus for performing a secure boot of a computer system is disclosed. A computer system according to the disclosure includes an auxiliary processor and a main processor. The boot process includes initially booting the auxiliary processor. The auxiliary processor includes a non-volatile memory storing boot code for the main processor. The auxiliary processor may perform a verification of the boot code. Subsequent to verifying the boot code, the main processor may be released from a reset state. Once the main processor is no longer in the reset state, the boot code may be provided thereto. Thereafter, the boot procedure may continue with the main processor executing the boot code.

公开(公告)号：US20190102558A1

公开(公告)日：2019-04-04

申请号：US16205838

申请日：2018-11-30

Applicant: Apple Inc.

Inventor： Joshua P. de Cesare ,  Timothy R. Paaske ,  Xeno S. Kovah ,  Nikolaj Schlej ,  Jeffrey R. Wilcox ,  Ezekiel T. Runyon ,  Hardik K. Doshi ,  Kevin H. Alderfer ,  Corey T. Kallenberg

IPC: G06F21/57 ,  G06F9/4401

Abstract: A method and apparatus for performing a secure boot of a computer system is disclosed. A computer system according to the disclosure includes an auxiliary processor and a main processor. The boot process includes initially booting the auxiliary processor. The auxiliary processor is associated with a non-volatile memory storing boot code for the main processor. The auxiliary processor may perform a verification of the boot code. Subsequent to verifying the boot code, the main processor may be released from a reset state. Once the main processor is no longer in the reset state, the boot code may be provided thereto. Thereafter, the boot procedure may continue with the main processor executing the boot code.

公开(公告)号：US12164901B2

公开(公告)日：2024-12-10

申请号：US17952159

申请日：2022-09-23

Applicant: Apple Inc.

Inventor： Damien P. Sorresso ,  Eric B. Tamura ,  Ezekiel T. Runyon

IPC: G06F9/48 ,  G06F8/65 ,  G06F8/71 ,  G06F21/57 ,  G06F8/41 ,  G06F8/61 ,  G06F9/4401 ,  G06F21/12 ,  G06F21/72

Abstract: Aspects and features include maintaining at least one auxiliary disk image on a computing device. Certain code that is aligned with the base operating system of the computing device resides in and is executed from the auxiliary disk image. In one example, a computing device receives an update asset and uses it to patch the auxiliary disk image. The computing device executes the updated code from the patched disk image without rebooting or otherwise restarting the base operating system. The existing auxiliary disk image may be replaced with the patched disk image in response to a reboot or some other event, or while executing the code in the patched disk image from memory.

公开(公告)号：US20230393835A1

公开(公告)日：2023-12-07

申请号：US17952159

申请日：2022-09-23

Applicant: Apple Inc.

Inventor： Damien P. Sorresso ,  Eric B. Tamura ,  Ezekiel T. Runyon

IPC: G06F8/65 ,  G06F21/57

CPC classification number: G06F8/65 ,  G06F2221/033 ,  G06F21/572

Abstract: Aspects and features include maintaining at least one auxiliary disk image on a computing device. Certain code that is aligned with the base operating system of the computing device resides in and is executed from the auxiliary disk image. In one example, a computing device receives an update asset and uses it to patch the auxiliary disk image. The computing device executes the updated code from the patched disk image without rebooting or otherwise restarting the base operating system. The existing auxiliary disk image may be replaced with the patched disk image in response to a reboot or some other event, or while executing the code in the patched disk image from memory.

公开(公告)号：US11263326B2

公开(公告)日：2022-03-01

申请号：US15721365

申请日：2017-09-29

Applicant: Apple Inc.

Inventor： Joshua P. de Cesare ,  Timothy R. Paaske ,  Xeno S. Kovah ,  Nikolaj Schlej ,  Jeffrey R. Wilcox ,  Ezekiel T. Runyon ,  Hardik K. Doshi ,  Kevin H. Alderfer ,  Corey T. Kallenberg

IPC: G06F9/4401 ,  G06F21/57 ,  G06F21/44

Abstract: A method and apparatus for performing a secure boot of a computer system is disclosed. A computer system according to the disclosure includes an auxiliary processor and a main processor. The boot process includes initially booting the auxiliary processor. The auxiliary processor includes a non-volatile memory storing boot code for the main processor. The auxiliary processor may perform a verification of the boot code. Subsequent to verifying the boot code, the main processor may be released from a reset state. Once the main processor is no longer in the reset state, the boot code may be provided thereto. Thereafter, the boot procedure may continue with the main processor executing the boot code.