cargo: bump arm-gic from 0.6.1 to 0.7.1 in /src/exercises/bare-metal/rtc in the minor group (#2933)

Bumps the minor group in /src/exercises/bare-metal/rtc with 1 update:
arm-gic.

Updates `arm-gic` from 0.6.1 to 0.7.1

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Andrew Walbran <qwandor@google.com>

src/exercises/bare-metal/rtc/Cargo.lock

@@ -23,9 +23,9 @@ dependencies = [
 
 [[package]]
 name = "arm-gic"
-version = "0.6.1"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6bfdb03424c95b58315a4cb0ff4ca919568a5a28ae5ba960a1ad92c9ccaf49b9"
+checksum = "fc8a5b06c02f993e98b0b3eb95c3acefb6889cc33a630621fb3e6c564502c2b0"
 dependencies = [
  "bitflags",
  "safe-mmio",

src/exercises/bare-metal/rtc/Cargo.toml

@@ -9,7 +9,7 @@ publish = false
 [dependencies]
 aarch64-paging = { version = "0.10.0", default-features = false }
 aarch64-rt = "0.2.2"
-arm-gic = "0.6.1"
+arm-gic = "0.7.1"
 arm-pl011-uart = "0.3.2"
 bitflags = "2.9.3"
 chrono = { version = "0.4.41", default-features = false }

src/exercises/bare-metal/rtc/src/exceptions.rs

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use arm_gic::gicv3::{GicV3, InterruptGroup};
+use arm_gic::gicv3::{GicCpuInterface, InterruptGroup};
 use log::{error, info, trace};
 use smccc::Hvc;
 use smccc::psci::system_off;
@@ -28,8 +28,9 @@ extern "C" fn sync_exception_current(_elr: u64, _spsr: u64) {
 #[unsafe(no_mangle)]
 extern "C" fn irq_current(_elr: u64, _spsr: u64) {
     trace!("irq_current");
-    let intid = GicV3::get_and_acknowledge_interrupt(InterruptGroup::Group1)
-        .expect("No pending interrupt");
+    let intid =
+        GicCpuInterface::get_and_acknowledge_interrupt(InterruptGroup::Group1)
+            .expect("No pending interrupt");
     info!("IRQ {intid:?}");
 }
 

src/exercises/bare-metal/rtc/src/main.rs

@@ -29,8 +29,8 @@ use core::hint::spin_loop;
 // ANCHOR: imports
 use aarch64_paging::paging::Attributes;
 use aarch64_rt::{InitialPagetable, entry, initial_pagetable};
-use arm_gic::gicv3::GicV3;
 use arm_gic::gicv3::registers::{Gicd, GicrSgi};
+use arm_gic::gicv3::{GicCpuInterface, GicV3};
 use arm_pl011_uart::{PL011Registers, Uart, UniqueMmioPointer};
 use core::panic::PanicInfo;
 use core::ptr::NonNull;
@@ -39,8 +39,8 @@ use smccc::Hvc;
 use smccc::psci::system_off;
 
 /// Base addresses of the GICv3.
-const GICD_BASE_ADDRESS: *mut Gicd = 0x800_0000 as _;
-const GICR_BASE_ADDRESS: *mut GicrSgi = 0x80A_0000 as _;
+const GICD_BASE_ADDRESS: NonNull<Gicd> = NonNull::new(0x800_0000 as _).unwrap();
+const GICR_BASE_ADDRESS: NonNull<GicrSgi> = NonNull::new(0x80A_0000 as _).unwrap();
 
 /// Base address of the primary PL011 UART.
 const PL011_BASE_ADDRESS: NonNull<PL011Registers> =
@@ -90,8 +90,14 @@ fn main(x0: u64, x1: u64, x2: u64, x3: u64) -> ! {
     // SAFETY: `GICD_BASE_ADDRESS` and `GICR_BASE_ADDRESS` are the base
     // addresses of a GICv3 distributor and redistributor respectively, and
     // nothing else accesses those address ranges.
-    let mut gic =
-        unsafe { GicV3::new(GICD_BASE_ADDRESS, GICR_BASE_ADDRESS, 1, false) };
+    let mut gic = unsafe {
+        GicV3::new(
+            UniqueMmioPointer::new(GICD_BASE_ADDRESS),
+            GICR_BASE_ADDRESS,
+            1,
+            false,
+        )
+    };
     gic.setup(0);
     // ANCHOR_END: main
 
@@ -102,11 +108,11 @@ fn main(x0: u64, x1: u64, x2: u64, x3: u64) -> ! {
     let time = Utc.timestamp_opt(timestamp.into(), 0).unwrap();
     info!("RTC: {time}");
 
-    GicV3::set_priority_mask(0xff);
-    gic.set_interrupt_priority(PL031_IRQ, None, 0x80);
-    gic.set_trigger(PL031_IRQ, None, Trigger::Level);
+    GicCpuInterface::set_priority_mask(0xff);
+    gic.set_interrupt_priority(PL031_IRQ, None, 0x80).unwrap();
+    gic.set_trigger(PL031_IRQ, None, Trigger::Level).unwrap();
     irq_enable();
-    gic.enable_interrupt(PL031_IRQ, None, true);
+    gic.enable_interrupt(PL031_IRQ, None, true).unwrap();
 
     // Wait for 3 seconds, without interrupts.
     let target = timestamp + 3;