diff --git a/01_wait_forever/src/_arch/aarch64/cpu.rs b/01_wait_forever/src/_arch/aarch64/cpu.rs
index a444de6d..1d3e871a 100644
--- a/01_wait_forever/src/_arch/aarch64/cpu.rs
+++ b/01_wait_forever/src/_arch/aarch64/cpu.rs
@@ -16,11 +16,11 @@ global_asm!(include_str!("cpu.S"));
 pub fn wait_forever() -> ! {
     unsafe {
         loop {
-            llvm_asm!("wfe"
-                    :             // outputs
-                    :             // inputs
-                    :             // clobbers
-                    : "volatile") // options
+            #[rustfmt::skip]
+            asm!(
+                "wfe",
+                options(nomem, nostack, preserves_flags)
+            );
         }
     }
 }
diff --git a/01_wait_forever/src/main.rs b/01_wait_forever/src/main.rs
index e642e31f..28b68b59 100644
--- a/01_wait_forever/src/main.rs
+++ b/01_wait_forever/src/main.rs
@@ -92,8 +92,8 @@
 //! - `crate::memory::*`
 //! - `crate::bsp::memory::*`
 
+#![feature(asm)]
 #![feature(global_asm)]
-#![feature(llvm_asm)]
 #![no_main]
 #![no_std]
 
diff --git a/02_runtime_init/src/_arch/aarch64/cpu.rs b/02_runtime_init/src/_arch/aarch64/cpu.rs
index a444de6d..1d3e871a 100644
--- a/02_runtime_init/src/_arch/aarch64/cpu.rs
+++ b/02_runtime_init/src/_arch/aarch64/cpu.rs
@@ -16,11 +16,11 @@ global_asm!(include_str!("cpu.S"));
 pub fn wait_forever() -> ! {
     unsafe {
         loop {
-            llvm_asm!("wfe"
-                    :             // outputs
-                    :             // inputs
-                    :             // clobbers
-                    : "volatile") // options
+            #[rustfmt::skip]
+            asm!(
+                "wfe",
+                options(nomem, nostack, preserves_flags)
+            );
         }
     }
 }
diff --git a/02_runtime_init/src/main.rs b/02_runtime_init/src/main.rs
index dc9d7b24..336824a1 100644
--- a/02_runtime_init/src/main.rs
+++ b/02_runtime_init/src/main.rs
@@ -92,8 +92,8 @@
 //! - `crate::memory::*`
 //! - `crate::bsp::memory::*`
 
+#![feature(asm)]
 #![feature(global_asm)]
-#![feature(llvm_asm)]
 #![no_main]
 #![no_std]
 
diff --git a/03_hacky_hello_world/README.md b/03_hacky_hello_world/README.md
index 86d69c59..bd08943e 100644
--- a/03_hacky_hello_world/README.md
+++ b/03_hacky_hello_world/README.md
@@ -139,13 +139,12 @@ diff -uNr 02_runtime_init/src/console.rs 03_hacky_hello_world/src/console.rs
 diff -uNr 02_runtime_init/src/main.rs 03_hacky_hello_world/src/main.rs
 --- 02_runtime_init/src/main.rs
 +++ 03_hacky_hello_world/src/main.rs
-@@ -92,8 +92,10 @@
- //! - `crate::memory::*`
+@@ -93,7 +93,9 @@
  //! - `crate::bsp::memory::*`
 
+ #![feature(asm)]
 +#![feature(format_args_nl)]
  #![feature(global_asm)]
- #![feature(llvm_asm)]
 +#![feature(panic_info_message)]
  #![no_main]
  #![no_std]
diff --git a/03_hacky_hello_world/src/_arch/aarch64/cpu.rs b/03_hacky_hello_world/src/_arch/aarch64/cpu.rs
index a444de6d..1d3e871a 100644
--- a/03_hacky_hello_world/src/_arch/aarch64/cpu.rs
+++ b/03_hacky_hello_world/src/_arch/aarch64/cpu.rs
@@ -16,11 +16,11 @@ global_asm!(include_str!("cpu.S"));
 pub fn wait_forever() -> ! {
     unsafe {
         loop {
-            llvm_asm!("wfe"
-                    :             // outputs
-                    :             // inputs
-                    :             // clobbers
-                    : "volatile") // options
+            #[rustfmt::skip]
+            asm!(
+                "wfe",
+                options(nomem, nostack, preserves_flags)
+            );
         }
     }
 }
diff --git a/03_hacky_hello_world/src/main.rs b/03_hacky_hello_world/src/main.rs
index 945e3604..8b6f4b25 100644
--- a/03_hacky_hello_world/src/main.rs
+++ b/03_hacky_hello_world/src/main.rs
@@ -92,9 +92,9 @@
 //! - `crate::memory::*`
 //! - `crate::bsp::memory::*`
 
+#![feature(asm)]
 #![feature(format_args_nl)]
 #![feature(global_asm)]
-#![feature(llvm_asm)]
 #![feature(panic_info_message)]
 #![no_main]
 #![no_std]
diff --git a/04_zero_overhead_abstraction/README.md b/04_zero_overhead_abstraction/README.md
index d912bc8b..781f0a2f 100644
--- a/04_zero_overhead_abstraction/README.md
+++ b/04_zero_overhead_abstraction/README.md
@@ -100,11 +100,11 @@ diff -uNr 03_hacky_hello_world/src/_arch/aarch64/cpu.rs 04_zero_overhead_abstrac
  pub fn wait_forever() -> ! {
 -    unsafe {
 -        loop {
--            llvm_asm!("wfe"
--                    :             // outputs
--                    :             // inputs
--                    :             // clobbers
--                    : "volatile") // options
+-            #[rustfmt::skip]
+-            asm!(
+-                "wfe",
+-                options(nomem, nostack, preserves_flags)
+-            );
 -        }
 +    loop {
 +        asm::wfe()
@@ -194,12 +194,13 @@ diff -uNr 03_hacky_hello_world/src/cpu.rs 04_zero_overhead_abstraction/src/cpu.r
 diff -uNr 03_hacky_hello_world/src/main.rs 04_zero_overhead_abstraction/src/main.rs
 --- 03_hacky_hello_world/src/main.rs
 +++ 04_zero_overhead_abstraction/src/main.rs
-@@ -93,8 +93,7 @@
+@@ -92,9 +92,8 @@
+ //! - `crate::memory::*`
  //! - `crate::bsp::memory::*`
 
+-#![feature(asm)]
  #![feature(format_args_nl)]
 -#![feature(global_asm)]
--#![feature(llvm_asm)]
 +#![feature(naked_functions)]
  #![feature(panic_info_message)]
  #![no_main]
diff --git a/14_exceptions_part2_peripheral_IRQs/README.md b/14_exceptions_part2_peripheral_IRQs/README.md
index 37bffaf3..82c6ad43 100644
--- a/14_exceptions_part2_peripheral_IRQs/README.md
+++ b/14_exceptions_part2_peripheral_IRQs/README.md
@@ -826,11 +826,11 @@ diff -uNr 13_integrated_testing/src/_arch/aarch64/exception/asynchronous.rs 14_e
 +/// - Changes the HW state of the executing core.
 +#[inline(always)]
 +pub unsafe fn local_irq_unmask() {
-+    llvm_asm!("msr DAIFClr, $0"
-+            :                     // outputs
-+            : "i"(daif_bits::IRQ) // inputs
-+            :                     // clobbers
-+            : "volatile"          // options
++    #[rustfmt::skip]
++    asm!(
++        "msr DAIFClr, {arg}",
++        arg = const daif_bits::IRQ,
++        options(nomem, nostack, preserves_flags)
 +    );
 +}
 +
@@ -841,11 +841,11 @@ diff -uNr 13_integrated_testing/src/_arch/aarch64/exception/asynchronous.rs 14_e
 +/// - Changes the HW state of the executing core.
 +#[inline(always)]
 +pub unsafe fn local_irq_mask() {
-+    llvm_asm!("msr DAIFSet, $0"
-+            :                     // outputs
-+            : "i"(daif_bits::IRQ) // inputs
-+            :                     // clobbers
-+            : "volatile"          // options
++    #[rustfmt::skip]
++    asm!(
++        "msr DAIFSet, {arg}",
++        arg = const daif_bits::IRQ,
++        options(nomem, nostack, preserves_flags)
 +    );
 +}
 +
@@ -2568,10 +2568,11 @@ diff -uNr 13_integrated_testing/src/lib.rs 14_exceptions_part2_peripheral_IRQs/s
  //! [timer interface]: ../libkernel/time/interface/trait.TimeManager.html
  //!
  //! # Code organization and architecture
-@@ -107,11 +112,15 @@
+@@ -107,8 +112,12 @@
  //! - `crate::bsp::memory::*`
 
  #![allow(incomplete_features)]
++#![feature(asm)]
 +#![feature(const_fn)]
  #![feature(const_generics)]
 -#![feature(custom_inner_attributes)]
@@ -2581,10 +2582,6 @@ diff -uNr 13_integrated_testing/src/lib.rs 14_exceptions_part2_peripheral_IRQs/s
  #![feature(format_args_nl)]
  #![feature(global_asm)]
  #![feature(linkage)]
-+#![feature(llvm_asm)]
- #![feature(naked_functions)]
- #![feature(panic_info_message)]
- #![feature(slice_ptr_range)]
 @@ -137,6 +146,7 @@
  pub mod exception;
  pub mod memory;
diff --git a/14_exceptions_part2_peripheral_IRQs/src/_arch/aarch64/exception/asynchronous.rs b/14_exceptions_part2_peripheral_IRQs/src/_arch/aarch64/exception/asynchronous.rs
index b5b307af..f09a92e6 100644
--- a/14_exceptions_part2_peripheral_IRQs/src/_arch/aarch64/exception/asynchronous.rs
+++ b/14_exceptions_part2_peripheral_IRQs/src/_arch/aarch64/exception/asynchronous.rs
@@ -77,11 +77,11 @@ pub fn is_local_irq_masked() -> bool {
 /// - Changes the HW state of the executing core.
 #[inline(always)]
 pub unsafe fn local_irq_unmask() {
-    llvm_asm!("msr DAIFClr, $0"
-            :                     // outputs
-            : "i"(daif_bits::IRQ) // inputs
-            :                     // clobbers
-            : "volatile"          // options
+    #[rustfmt::skip]
+    asm!(
+        "msr DAIFClr, {arg}",
+        arg = const daif_bits::IRQ,
+        options(nomem, nostack, preserves_flags)
     );
 }
 
@@ -92,11 +92,11 @@ pub unsafe fn local_irq_unmask() {
 /// - Changes the HW state of the executing core.
 #[inline(always)]
 pub unsafe fn local_irq_mask() {
-    llvm_asm!("msr DAIFSet, $0"
-            :                     // outputs
-            : "i"(daif_bits::IRQ) // inputs
-            :                     // clobbers
-            : "volatile"          // options
+    #[rustfmt::skip]
+    asm!(
+        "msr DAIFSet, {arg}",
+        arg = const daif_bits::IRQ,
+        options(nomem, nostack, preserves_flags)
     );
 }
 
diff --git a/14_exceptions_part2_peripheral_IRQs/src/lib.rs b/14_exceptions_part2_peripheral_IRQs/src/lib.rs
index 5a2785f6..c6a431c3 100644
--- a/14_exceptions_part2_peripheral_IRQs/src/lib.rs
+++ b/14_exceptions_part2_peripheral_IRQs/src/lib.rs
@@ -112,6 +112,7 @@
 //! - `crate::bsp::memory::*`
 
 #![allow(incomplete_features)]
+#![feature(asm)]
 #![feature(const_fn)]
 #![feature(const_generics)]
 #![feature(const_if_match)]
@@ -120,7 +121,6 @@
 #![feature(format_args_nl)]
 #![feature(global_asm)]
 #![feature(linkage)]
-#![feature(llvm_asm)]
 #![feature(naked_functions)]
 #![feature(panic_info_message)]
 #![feature(slice_ptr_range)]
diff --git a/X1_JTAG_boot/jtag_boot_rpi3.img b/X1_JTAG_boot/jtag_boot_rpi3.img
index f39f1e48..dc756ac7 100755
Binary files a/X1_JTAG_boot/jtag_boot_rpi3.img and b/X1_JTAG_boot/jtag_boot_rpi3.img differ
diff --git a/X1_JTAG_boot/jtag_boot_rpi4.img b/X1_JTAG_boot/jtag_boot_rpi4.img
index d5e8d1a7..4388f0d2 100755
Binary files a/X1_JTAG_boot/jtag_boot_rpi4.img and b/X1_JTAG_boot/jtag_boot_rpi4.img differ