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nrf: add support for nrf9120, nrf9151, nrf9161 approtect.

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This commit is contained in:
Dario Nieuwenhuis 2025-07-15 16:47:01 +02:00
parent adbe5859c0
commit 27f7cb6236
1 changed files with 31 additions and 0 deletions
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31
embassy-nrf/src/lib.rs
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@ -586,6 +586,8 @@ mod consts {
pub const UICR_APPROTECT: *mut u32 = 0x00FF8000 as *mut u32;
pub const UICR_SECUREAPPROTECT: *mut u32 = 0x00FF802C as *mut u32;
pub const APPROTECT_ENABLED: u32 = 0x0000_0000;
#[cfg(feature = "_nrf9120")]
pub const APPROTECT_DISABLED: u32 = 0x50FA50FA;
}
#[cfg(feature = "_nrf5340-app")]
@ -768,6 +770,28 @@ pub fn init(config: config::Config) -> Peripherals {
}
// nothing to do on the nrf9160, debug is allowed by default.
// nrf9151, nrf9161 use the new-style approtect that requires writing a register.
#[cfg(feature = "nrf9120-s")]
unsafe {
let p = pac::APPROTECT_S;
let res = uicr_write(consts::UICR_APPROTECT, consts::APPROTECT_DISABLED);
needs_reset |= res == WriteResult::Written;
p.approtect()
.disable()
.write(|w| w.set_disable(pac::approtect::vals::ApprotectDisableDisable::SW_UNPROTECTED));
let res = uicr_write(consts::UICR_SECUREAPPROTECT, consts::APPROTECT_DISABLED);
needs_reset |= res == WriteResult::Written;
p.secureapprotect()
.disable()
.write(|w| w.set_disable(pac::approtect::vals::SecureapprotectDisableDisable::SW_UNPROTECTED));
// TODO: maybe add workaround for this errata
// It uses extra power, not sure how to let the user choose.
// https://docs.nordicsemi.com/bundle/errata_nRF9151_Rev1/page/ERR/nRF9151/Rev1/latest/anomaly_151_36.html#anomaly_151_36
}
}
config::Debug::Disallowed => {
// TODO: Handle nRF54L
@ -783,6 +807,13 @@ pub fn init(config: config::Config) -> Peripherals {
let res = uicr_write(consts::UICR_SECUREAPPROTECT, consts::APPROTECT_ENABLED);
needs_reset |= res == WriteResult::Written;
}
#[cfg(feature = "nrf9120-s")]
{
let p = pac::APPROTECT_S;
p.approtect().forceprotect().write(|w| w.set_forceprotect(true));
p.secureapprotect().forceprotect().write(|w| w.set_forceprotect(true));
}
}
}
config::Debug::NotConfigured => {}