| #!/bin/bash |
| |
| # Copyright 2019 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # All kernel command line changes must update the security base lines in |
| # the signer. It rejects any settings it does not recognize and breaks the |
| # build. So any modify_kernel_command_line() function change here needs to be |
| # reflected in ensure_secure_kernelparams.config. |
| |
| # See crrev.com/i/216896 as an example. |
| |
| modify_kernel_command_line() { |
| # Might be helpful to preserve ramoops in extreme circumstances |
| echo "ramoops.ecc=1" >> "$1" |
| |
| # Avoid a cosmetic TPM error (Work around for b/113527055) |
| sed -i -e '/tpm_tis.force/d' "$1" |
| echo "tpm_tis.force=0" >> "$1" |
| |
| # Enable S0ix logging using GSMI |
| echo "gsmi.s0ix_logging_enable=1" >> "$1" |
| |
| # Check for S0ix failures and show warnings on failures |
| echo "intel_pmc_core.warn_on_s0ix_failures=1" >> "$1" |
| |
| # Load GuC and HuC firmware |
| echo "i915.enable_guc=2" >> "$1" |
| |
| # Force DRM to use PCI device ID 9a49 |
| echo "i915.force_probe=9a49" >> "$1" |
| } |
