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746debdf20
Previously we defined separate functions to map registers to protect ranges for each supported SPI ROM. This change instead adds a protect range table + flags for each supported SPI ROM and adds common functions for translation between ranges + registers. This makes supporting new parts easier. Since we will never use most supported protection ranges, we can even simplfy the tables. The implementation is now similar to flashrom. BUG=chrome-os-partner:37688 TEST=Manual on Glower. flashwp disable + spi_flash_rsr --> 0 flashinfo --> shows no protection spi_flash_prot 0 0x10000 + spi_flash_rsr --> 0x24 flashinfo --> shows 64KB protected spi_flash_prot 0 0x20000 + spi_flash_rsr --> 0x28 flashinfo --> shows all 96KB protected spi_flash_prot 0 0x40000 + spi_flash_rsr --> 0x2c spi_flash_prot 0 0x80000 + spi_flash_rsr --> 0x10 spi_flash_prot 0 0 + spi_flash_rsr --> 0x00 spi_flash_prot 0 0x1000 --> error spi_flash_prot 0x10000 0x10000 --> error BRANCH=None Change-Id: Ie5908ce687b7ff207b09794c7b001a4fbd9e0f5a Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/259310 Reviewed-by: Randall Spangler <rspangler@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit