Skip to content

disable TZ for SBL on boot since no config. included #57

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
JamesHuard merged 3 commits into from
Oct 23, 2026
Merged

disable TZ for SBL on boot since no config. included #57

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
d43f0e0
disable TZ for SBL on boot since no config. included
alamfarjadf Oct 22, 2026
f71c4bb
do not allow silent override of TZM settings
alamfarjadf Oct 22, 2026
afb6814
cargo fmt
alamfarjadf Oct 22, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 14 additions & 4 deletions libs/mcxa-security-provisioning/src/lib.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -361,14 +361,23 @@ impl Provisioner {
}
}

/// Enables secure boot policies in CMPA
pub fn with_secure_boot_policies(&mut self) -> &mut Self {
/// Enables secure boot policies in CMPA.
/// Note that this function is a specific policy setup for production and is not intended for DEV or factory use.
/// Use [Self::with_default_secure_cmpa_config] for standard use.
///
/// Errors with [ProvisionError::TzmPresetEnforced] if TZM preset enforcement is already enabled,
/// rather than silently disabling it. Sets strict security policies (apart from TZM enforcement)
pub fn with_secure_boot_policies(&mut self) -> Result<&mut Self, ProvisionError> {
if !matches!(self.ifr.cmpa.secure_boot_cfg.enf_tzm_preset(), mcxa_ifr::BigBool::False) {
return Err(ProvisionError::TzmPresetEnforced);
}

self.ifr.cmpa.secure_boot_cfg = SecureBootCfg::builder()
.with_sec_boot_en(mcxa_ifr::SecBootEn::OnlyPki)
.with_lp_sec_boot(mcxa_ifr::LpSecBoot::Cold)
.with_dice_csr_key_type(DiceCsrKeyType::Sha384AndMLDSA)
.with_enf_cnsa(mcxa_ifr::EnfCnsa::CNSA2)
.with_enf_tzm_preset(true.into())
.with_enf_tzm_preset(false.into())
Comment thread
alamfarjadf marked this conversation as resolved.
Resolved
.with_fast_boot_en(mcxa_ifr::InverseBigBool::False)
.with_active_img_prot(mcxa_ifr::ActiveImgProt::GLBAC4)
.with_fips_sha_sten(mcxa_ifr::SelfTestEnable::NotIncluded)
Expand All @@ -382,7 +391,7 @@ impl Provisioner {

self.cmpa_updated = true;

self
Ok(self)
}

pub fn ifr(&self) -> &IFR {
Expand All @@ -399,6 +408,7 @@ pub enum ProvisionError {
RotkhDeriveError(DeriveError),
RotkhMismatch,
NoImages,
TzmPresetEnforced,
}

impl From<DeriveError> for ProvisionError {
Expand Down
Loading