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Used #define CONFIG_FLASH_NVMEM to have functions in /board/tpm2/NVMem.c utlitize on chip Nvmem functions. On chip NV Memory availability is tied to an internal nvmem error state which itself only depends on finding at least one valid partition. Added nvmem_is_different and nvmem_move functions which were needed to complete the tpm2 platform interface. In addition, added unit tests to support these two new functions. BUG=chrome-os-partner:44745 BRANCH=none TEST=manual make runtests TEST_LIST_HOST=nvmem and verify that all tests pass. Tested with tcg_test utility to test reads/writes using the command "build/test-tpm2/install/bin/compliance --ntpm localhost:9883 --select CPCTPM_TC2_3_33_07_01". Change-Id: I475fdd1331e28ede00f9b674c7bee1536fa9ea48 Signed-off-by: Scott <scollyer@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/346236 Commit-Ready: Scott Collyer <scollyer@chromium.org> Tested-by: Scott Collyer <scollyer@chromium.org> Reviewed-by: Bill Richardson <wfrichar@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly