METHOD FOR ACCESSING MEMORY DEVICES PRIOR TO BUS TRAINING
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United States of America Patent
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Mar 27, 2014
app pub date -
Sep 24, 2012
filing date -
Sep 24, 2012
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Abstract
Embodiments of the invention describe apparatuses, systems and methods for enabling memory device access prior to bus training, thereby enabling firmware image storage in non-flash nonvolatile memory, such as DDR DRAM. The increasing size of firmware images, such as BIOS, MRC, and ME firmware, makes current non-volatile storage solutions, such as SPI flash memory, impractical; executing BIOS code in flash is slow, and having a separate non-volatile memory device increases device costs. Furthermore, solutions such as Cache-as-RAM, which are utilized for running the pre-memory BIOS code, are limited by the cache size that is not scalable to the increasing complexity of BIOS code.
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