Method and device for upgrading hardware domain of chip, chip and vehicle
By defining multiple hardware domains in the chip and setting up the upgrade mode using global registers, independent upgrade of the chip hardware domain is achieved, solving the problem of low upgrade efficiency in the existing technology and improving the upgrade efficiency.
CN119473357AActive Publication Date: 2025-02-18BEIJING SEMIDRIVE TECHNOLOGY LTD
Patent Information
- Application Number
- CN202411606332.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2044-11-11
AI Technical Summary
Technical Problem
The existing technology is difficult to achieve independent upgrade of the chip hardware domain, resulting in low upgrade efficiency.
Method used
By introducing multiple hardware domains into the chip, including the first security domain, the second security domain and the application domain, and setting the upgrade mode using global registers, releasing control of the storage area to the application domain, so that it can independently obtain and integrate the upgrade Resource upgrades.
Benefits of technology
It realizes efficient and independent upgrades of the chip hardware domain, improves the upgrade efficiency, and does not affect the normal operation of other hardware domains.
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Smart Images
Figure CN119473357A_ABST
Abstract
The invention discloses a hardware domain upgrading method and device of a chip, the chip and a vehicle, the method is applied to the chip, and the method comprises the steps that if a first security domain determines that the chip enters a first upgrading mode, the control right of a first storage area of the first security domain is released to a first application domain, and a first upgrading resource is stored in the first storage area; generating and storing first identification information used for representing that the first upgrading resource is released; in the first upgrading mode, the second security domain releases the control right of a second storage area of the second security domain to the first application domain, and a second upgrading resource is stored in the second storage area; and if the first application domain obtains the first upgrading resource and the second upgrading resource based on the inter-core communication, carrying out upgrading operation on the inactive partition of the first application domain based on the first upgrading resource, the second upgrading resource and a third upgrading resource stored in the first application domain. According to the method, upgrading of partial hardware domains is realized.
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Citation Information
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