1 files changed, 38 insertions, 0 deletions
diff --git a/board/src/imxrt1170evk_cm7.rs b/board/src/imxrt1170evk_cm7.rs
new file mode 100644
index 0000000..7d966eb
--- /dev/null
+++ b/board/src/imxrt1170evk_cm7.rs
@@ -0,0 +1,38 @@
+//! Support for booting the Cortex M7 on the i.MX RT 1170 EVK.
+
+use crate::ral;
+
+#[cfg(target_arch = "arm")]
+use imxrt1170evk_fcb as _;
+#[cfg(target_arch = "arm")]
+use panic_rtt_target as _;
+
+const LED_OFFSET: u32 = 3;
+
+pub mod rtic_support {
+    pub use crate::ral::NVIC_PRIO_BITS;
+    #[allow(non_snake_case)] // For RTIC trickery...
+    pub mod Interrupt {
+        pub const PIT: crate::ral::Interrupt = crate::ral::Interrupt::PIT1;
+    }
+    pub use Interrupt as interrupt;
+}
+
+pub fn prepare(timer_delay_microseconds: u32) -> Option<crate::Resources> {
+    #[cfg(target_arch = "arm")]
+    rtt_target::rtt_init_print!();
+
+    let iomuxc = unsafe { ral::iomuxc::IOMUXC::instance() };
+    ral::modify_reg!(ral::iomuxc, iomuxc, SW_MUX_CTL_PAD_GPIO_AD_04, MUX_MODE: 5);
+
+    let ccm = unsafe { ral::ccm::CCM::instance() };
+    // Enable LPCG for GPIOs.
+    ral::write_reg!(ral::ccm, ccm, LPCG51_DIRECT, 1);
+
+    let gpio = unsafe { ral::gpio::GPIO3::instance() };
+    let pit = crate::prepare_pit(timer_delay_microseconds)?;
+    Some(crate::Resources {
+        pit,
+        led: crate::Led::new(LED_OFFSET, &gpio),
+    })
+}