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System-Level Dual-Boot Capability in Systems Having One or More Devices Without Native Dual-Boot Capability
System-Level Dual-Boot Capability in Systems Having One or More Devices Without Native Dual-Boot Capability
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机译:具有一个或多个设备而没有本机双启动功能的系统中的系统级双启动功能
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摘要
In one embodiment, a system has a master programmable device (PD) with native dual-boot capability and one or more slave PDs with no native dual-boot capability. A master golden image includes an embedded dual-boot function. During power-up, each PD copies its primary image into its volatile configuration memory and determines whether the primary image is valid. When the master's configuration engine detects an invalid master primary image, then the master's native dual-boot capability enables the master to implement a system-reboot procedure, which includes copying the master golden image from an external memory device into the master's volatile configuration memory and launching the embedded dual-boot function, which in turn copies the slave golden images from the external memory device into the slaves' volatile configuration memories before enabling other master-golden-image functions. Significant system reliability and robustness are achieved without provisioning every PD with native dual-boot capability.
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