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Methods and apparatus to protect memory regions during low-power states
Methods and apparatus to protect memory regions during low-power states
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机译:在低功率状态下保护存储器区域的方法和装置
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摘要
A disclosed example involves managing power states, signing a suspend-to-RAM (STR) data structure by: generating a header key, a scatter/gather table key and a dynamic random access memory (DRAM) key using a root key generated by the secure processor. Generating a header signature using the header key, the header signature based on a table header and a random or pseudo-random value. Generating a scatter/gather table signature using the scatter/gather table key, the scatter/gather table signature based on a scatter/gather table header and a random or pseudo-random value. Generating a DRAM signature using the DRAM key and a value from a region of DRAM. Storing the header signature, the scatter/gather table signature and the DRAM signature in the STR data structure. Resume the processor system from the low-power mode when the data structure is valid based on a comparison of a first signature and a second signature.
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