tree 9e0763e65079bd9c24f6847b5f954f2f5a88625d
parent 488bbe2c880b883461cc551d45de4d6541b28400
author Karthikeyan Ramasubramanian <kramasub@google.com> 1603166905 -0600
committer Karthik Ramasubramanian <kramasub@google.com> 1603468034 +0000

mb/google/dedede: Update the flash ROM layout for RW regions

RW_LEGACY region needs to be 1 MiB to accommodate any alternate
firmware. Hence update the flash ROM layout as below:
* Grab ~512 KiB from each FW_MAIN_A/B regions and allocate them to
  RW_LEGACY region so that it grows to 1 MiB.
* Remove VBLOCK_DEV region which is not used.
* Re-size the ELOG region to 4 KiB since that is the maximum size of the
  ELOG mirror buffer.
* Resize RW_NVRAM, VBLOCK_A/B regions to 8 KiB since no more than that
  size is used in those regions.
* Resize SHARED_DATA region to 4 KiB since no more than that size is
  used in that region.
* Based on the resizing, allocate each FW_MAIN_A/B regions with 72 KiB.

BUG=b:167943992, b:167498108
TEST=Build and boot to OS in Drawlat. Ensure that the firmware test
setup and flash map test are successful. Ensure that the event logs are
synced properly between reboots. Ensure that the suspend/resume sequence
is working fine. Ensure that the ChromeOS firmware update completes
successfully for the boot image with updated flash map and the system
boots fine after the update.

Change-Id: I53ada5ac3bd73bea50f4dd4dd352556f1eda7838
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46569
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>