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bfd1aba3cb
Modified the SPI NOR flash driver to implement and expose a read JEDEC ID command as well as support block (64KiB) erase operations. BUG=None BRANCH=None TEST=Built all targets. Tested on two different EEPROMs. Before: ------------------------------------------- $ ~/haven_updater$ ./read_jedec_ftdi [+] JEDEC_ID=0x1940ef $ ~/haven_updater$ time ./chip_erase_ftdi [+] Success! real 4m0.440s user 0m6.674s sys 0m11.998s ------------------------------------------- $ ~/haven_updater$ ./read_jedec_ftdi [+] JEDEC_ID=0xc21a20c2 $ ~/haven_updater$ time ./chip_erase_ftdi [+] Success! real 5m57.291s user 0m9.964s sys 0m18.363s ------------------------------------------- After: ------------------------------------------- $ ~/haven_updater$ ./read_jedec_ftdi [+] JEDEC_ID=0x1940ef $ ~/haven_updater$ time ./chip_erase_ftdi [+] Success! real 1m33.176s user 0m2.327s sys 0m5.050s ------------------------------------------- $ ~/haven_updater$ ./read_jedec_ftdi [+] JEDEC_ID=0xc21a20c2 $ ~/haven_updater$ time ./chip_erase_ftdi [+] Success! real 2m41.923s user 0m4.191s sys 0m8.576s ------------------------------------------- Change-Id: Ic20372ca9966499977a52a700d6492d3f648d7b2 Signed-off-by: Nadim Taha <ntaha@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/416903 Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-by: Shawn N <shawnn@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