16 files changed, 108 insertions, 28 deletions

diff --git a/embassy-stm32/build.rs b/embassy-stm32/build.rs
index d8a7ea0e6..1984a1420 100644
--- a/embassy-stm32/build.rs
+++ b/embassy-stm32/build.rs
@@ -1494,6 +1494,36 @@ fn main() {
         .flat_map(|p| &p.registers)
         .any(|p| p.kind == "dmamux");
 
+    let mut dma_irqs: BTreeMap<&str, Vec<String>> = BTreeMap::new();
+
+    for p in METADATA.peripherals {
+        if let Some(r) = &p.registers {
+            if r.kind == "dma" || r.kind == "bdma" || r.kind == "gpdma" || r.kind == "lpdma" {
+                for irq in p.interrupts {
+                    let ch_name = format!("{}_{}", p.name, irq.signal);
+                    let ch = METADATA.dma_channels.iter().find(|c| c.name == ch_name).unwrap();
+
+                    // Some H7 chips have BDMA1 hardcoded for DFSDM, ie no DMAMUX. It's unsupported, skip it.
+                    if has_dmamux && ch.dmamux.is_none() {
+                        continue;
+                    }
+
+                    dma_irqs.entry(irq.interrupt).or_default().push(ch_name);
+                }
+            }
+        }
+    }
+
+    #[cfg(feature = "_dual-core")]
+    let mut dma_ch_to_irq: BTreeMap<&str, Vec<String>> = BTreeMap::new();
+
+    #[cfg(feature = "_dual-core")]
+    for (irq, channels) in &dma_irqs {
+        for channel in channels {
+            dma_ch_to_irq.entry(channel).or_default().push(irq.to_string());
+        }
+    }
+
     for (ch_idx, ch) in METADATA.dma_channels.iter().enumerate() {
         // Some H7 chips have BDMA1 hardcoded for DFSDM, ie no DMAMUX. It's unsupported, skip it.
         if has_dmamux && ch.dmamux.is_none() {
@@ -1502,6 +1532,16 @@ fn main() {
 
         let name = format_ident!("{}", ch.name);
         let idx = ch_idx as u8;
+        #[cfg(feature = "_dual-core")]
+        let irq = {
+            let irq_name = if let Some(x) = &dma_ch_to_irq.get(ch.name) {
+                format_ident!("{}", x.get(0).unwrap())
+            } else {
+                panic!("failed to find dma interrupt")
+            };
+            quote!(crate::pac::Interrupt::#irq_name)
+        };
+
         g.extend(quote!(dma_channel_impl!(#name, #idx);));
 
         let dma = format_ident!("{}", ch.dma);
@@ -1532,6 +1572,7 @@ fn main() {
             None => quote!(),
         };
 
+        #[cfg(not(feature = "_dual-core"))]
         dmas.extend(quote! {
             crate::dma::ChannelInfo {
                 dma: #dma_info,
@@ -1539,31 +1580,20 @@ fn main() {
                 #dmamux
             },
         });
+        #[cfg(feature = "_dual-core")]
+        dmas.extend(quote! {
+            crate::dma::ChannelInfo {
+                dma: #dma_info,
+                num: #ch_num,
+                irq: #irq,
+                #dmamux
+            },
+        });
     }
 
     // ========
     // Generate DMA IRQs.
 
-    let mut dma_irqs: BTreeMap<&str, Vec<String>> = BTreeMap::new();
-
-    for p in METADATA.peripherals {
-        if let Some(r) = &p.registers {
-            if r.kind == "dma" || r.kind == "bdma" || r.kind == "gpdma" {
-                for irq in p.interrupts {
-                    let ch_name = format!("{}_{}", p.name, irq.signal);
-                    let ch = METADATA.dma_channels.iter().find(|c| c.name == ch_name).unwrap();
-
-                    // Some H7 chips have BDMA1 hardcoded for DFSDM, ie no DMAMUX. It's unsupported, skip it.
-                    if has_dmamux && ch.dmamux.is_none() {
-                        continue;
-                    }
-
-                    dma_irqs.entry(irq.interrupt).or_default().push(ch_name);
-                }
-            }
-        }
-    }
-
     let dma_irqs: TokenStream = dma_irqs
         .iter()
         .map(|(irq, channels)| {
diff --git a/embassy-stm32/src/dma/dma_bdma.rs b/embassy-stm32/src/dma/dma_bdma.rs
index 8a6aa53a0..8e2964f94 100644
--- a/embassy-stm32/src/dma/dma_bdma.rs
+++ b/embassy-stm32/src/dma/dma_bdma.rs
@@ -15,6 +15,8 @@ use crate::{interrupt, pac};
 pub(crate) struct ChannelInfo {
     pub(crate) dma: DmaInfo,
     pub(crate) num: usize,
+    #[cfg(feature = "_dual-core")]
+    pub(crate) irq: pac::Interrupt,
     #[cfg(dmamux)]
     pub(crate) dmamux: super::DmamuxInfo,
 }
@@ -259,10 +261,12 @@ pub(crate) unsafe fn init(
     foreach_interrupt! {
         ($peri:ident, dma, $block:ident, $signal_name:ident, $irq:ident) => {
             crate::interrupt::typelevel::$irq::set_priority_with_cs(cs, dma_priority);
+            #[cfg(not(feature = "_dual-core"))]
             crate::interrupt::typelevel::$irq::enable();
         };
         ($peri:ident, bdma, $block:ident, $signal_name:ident, $irq:ident) => {
             crate::interrupt::typelevel::$irq::set_priority_with_cs(cs, bdma_priority);
+            #[cfg(not(feature = "_dual-core"))]
             crate::interrupt::typelevel::$irq::enable();
         };
     }
@@ -341,6 +345,11 @@ impl AnyChannel {
         options: TransferOptions,
     ) {
         let info = self.info();
+        #[cfg(feature = "_dual-core")]
+        {
+            use embassy_hal_internal::interrupt::InterruptExt as _;
+            info.irq.enable();
+        }
 
         #[cfg(dmamux)]
         super::dmamux::configure_dmamux(&info.dmamux, _request);
diff --git a/embassy-stm32/src/dma/gpdma.rs b/embassy-stm32/src/dma/gpdma.rs
index 13d5d15be..f9d66ca86 100644
--- a/embassy-stm32/src/dma/gpdma.rs
+++ b/embassy-stm32/src/dma/gpdma.rs
@@ -18,6 +18,8 @@ use crate::pac::gpdma::vals;
 pub(crate) struct ChannelInfo {
     pub(crate) dma: pac::gpdma::Gpdma,
     pub(crate) num: usize,
+    #[cfg(feature = "_dual-core")]
+    pub(crate) irq: pac::Interrupt,
 }
 
 /// GPDMA transfer options.
@@ -57,6 +59,7 @@ pub(crate) unsafe fn init(cs: critical_section::CriticalSection, irq_priority: P
     foreach_interrupt! {
         ($peri:ident, gpdma, $block:ident, $signal_name:ident, $irq:ident) => {
             crate::interrupt::typelevel::$irq::set_priority_with_cs(cs, irq_priority);
+            #[cfg(not(feature = "_dual-core"))]
             crate::interrupt::typelevel::$irq::enable();
         };
     }
@@ -67,6 +70,12 @@ impl AnyChannel {
     /// Safety: Must be called with a matching set of parameters for a valid dma channel
     pub(crate) unsafe fn on_irq(&self) {
         let info = self.info();
+        #[cfg(feature = "_dual-core")]
+        {
+            use embassy_hal_internal::interrupt::InterruptExt as _;
+            info.irq.enable();
+        }
+
         let state = &STATE[self.id as usize];
 
         let ch = info.dma.ch(info.num);
diff --git a/embassy-stm32/src/lib.rs b/embassy-stm32/src/lib.rs
index 12ebbae2d..98695e738 100644
--- a/embassy-stm32/src/lib.rs
+++ b/embassy-stm32/src/lib.rs
@@ -197,6 +197,7 @@ pub use crate::pac::NVIC_PRIO_BITS;
 
 /// `embassy-stm32` global configuration.
 #[non_exhaustive]
+#[derive(Clone, Copy)]
 pub struct Config {
     /// RCC config.
     pub rcc: rcc::Config,
@@ -303,6 +304,7 @@ mod dual_core {
     pub struct SharedData {
         init_flag: AtomicUsize,
         clocks: UnsafeCell<MaybeUninit<Clocks>>,
+        config: UnsafeCell<MaybeUninit<Config>>,
     }
 
     unsafe impl Sync for SharedData {}
@@ -325,6 +327,8 @@ mod dual_core {
         rcc::set_freqs_ptr(shared_data.clocks.get());
         let p = init_hw(config);
 
+        unsafe { *shared_data.config.get() }.write(config);
+
         shared_data.init_flag.store(INIT_DONE_FLAG, Ordering::SeqCst);
 
         p
@@ -372,9 +376,23 @@ mod dual_core {
     fn init_secondary_hw(shared_data: &'static SharedData) -> Peripherals {
         rcc::set_freqs_ptr(shared_data.clocks.get());
 
+        let config = unsafe { (*shared_data.config.get()).assume_init() };
+
         // We use different timers on the different cores, so we have to still initialize one here
-        #[cfg(feature = "_time-driver")]
         critical_section::with(|cs| {
+            unsafe {
+                dma::init(
+                    cs,
+                    #[cfg(bdma)]
+                    config.bdma_interrupt_priority,
+                    #[cfg(dma)]
+                    config.dma_interrupt_priority,
+                    #[cfg(gpdma)]
+                    config.gpdma_interrupt_priority,
+                )
+            }
+
+            #[cfg(feature = "_time-driver")]
             // must be after rcc init
             time_driver::init(cs);
         });
diff --git a/embassy-stm32/src/rcc/bd.rs b/embassy-stm32/src/rcc/bd.rs
index 4e9c18594..9ccca8a2a 100644
--- a/embassy-stm32/src/rcc/bd.rs
+++ b/embassy-stm32/src/rcc/bd.rs
@@ -16,6 +16,7 @@ pub enum LseMode {
     Bypass,
 }
 
+#[derive(Clone, Copy)]
 pub struct LseConfig {
     pub frequency: Hertz,
     pub mode: LseMode,
@@ -80,6 +81,7 @@ fn bdcr() -> Reg<Bdcr, RW> {
     return crate::pac::RCC.csr1();
 }
 
+#[derive(Clone, Copy)]
 pub struct LsConfig {
     pub rtc: RtcClockSource,
     pub lsi: bool,
diff --git a/embassy-stm32/src/rcc/c0.rs b/embassy-stm32/src/rcc/c0.rs
index 5adf37941..6712aedc4 100644
--- a/embassy-stm32/src/rcc/c0.rs
+++ b/embassy-stm32/src/rcc/c0.rs
@@ -37,6 +37,7 @@ pub struct Hsi {
 
 /// Clocks configutation
 #[non_exhaustive]
+#[derive(Clone, Copy)]
 pub struct Config {
     /// HSI Configuration
     pub hsi: Option<Hsi>,
diff --git a/embassy-stm32/src/rcc/f013.rs b/embassy-stm32/src/rcc/f013.rs
index 63dc27bdd..60577b213 100644
--- a/embassy-stm32/src/rcc/f013.rs
+++ b/embassy-stm32/src/rcc/f013.rs
@@ -76,6 +76,7 @@ pub enum HrtimClockSource {
 
 /// Clocks configutation
 #[non_exhaustive]
+#[derive(Clone, Copy)]
 pub struct Config {
     pub hsi: bool,
     pub hse: Option<Hse>,
diff --git a/embassy-stm32/src/rcc/f247.rs b/embassy-stm32/src/rcc/f247.rs
index 61f687d30..58056301a 100644
--- a/embassy-stm32/src/rcc/f247.rs
+++ b/embassy-stm32/src/rcc/f247.rs
@@ -63,6 +63,7 @@ pub struct Pll {
 /// Used to calculate flash waitstates. See
 /// RM0033 - Table 3. Number of wait states according to Cortex®-M3 clock frequency
 #[cfg(stm32f2)]
+#[derive(Clone, Copy)]
 pub enum VoltageScale {
     /// 2.7 to 3.6 V
     Range0,
@@ -76,6 +77,7 @@ pub enum VoltageScale {
 
 /// Configuration of the core clocks
 #[non_exhaustive]
+#[derive(Clone, Copy)]
 pub struct Config {
     pub hsi: bool,
     pub hse: Option<Hse>,
diff --git a/embassy-stm32/src/rcc/g0.rs b/embassy-stm32/src/rcc/g0.rs
index c2fa0ca39..c53c83b0e 100644
--- a/embassy-stm32/src/rcc/g0.rs
+++ b/embassy-stm32/src/rcc/g0.rs
@@ -33,6 +33,7 @@ pub struct Hse {
 /// Use this struct to configure the PLL source, input frequency, multiplication factor, and output
 /// dividers. Be sure to keep check the datasheet for your specific part for the appropriate
 /// frequency ranges for each of these settings.
+#[derive(Clone, Copy)]
 pub struct Pll {
     /// PLL Source clock selection.
     pub source: PllSource,
@@ -55,6 +56,7 @@ pub struct Pll {
 
 /// Clocks configutation
 #[non_exhaustive]
+#[derive(Clone, Copy)]
 pub struct Config {
     /// HSI Enable
     pub hsi: bool,
diff --git a/embassy-stm32/src/rcc/g4.rs b/embassy-stm32/src/rcc/g4.rs
index c261c0fed..16561f908 100644
--- a/embassy-stm32/src/rcc/g4.rs
+++ b/embassy-stm32/src/rcc/g4.rs
@@ -32,6 +32,7 @@ pub struct Hse {
 /// Use this struct to configure the PLL source, input frequency, multiplication factor, and output
 /// dividers. Be sure to keep check the datasheet for your specific part for the appropriate
 /// frequency ranges for each of these settings.
+#[derive(Clone, Copy)]
 pub struct Pll {
     /// PLL Source clock selection.
     pub source: PllSource,
@@ -54,6 +55,7 @@ pub struct Pll {
 
 /// Clocks configutation
 #[non_exhaustive]
+#[derive(Clone, Copy)]
 pub struct Config {
     /// HSI Enable
     pub hsi: bool,
diff --git a/embassy-stm32/src/rcc/h.rs b/embassy-stm32/src/rcc/h.rs
index e3c7dd158..376a0b454 100644
--- a/embassy-stm32/src/rcc/h.rs
+++ b/embassy-stm32/src/rcc/h.rs
@@ -120,7 +120,7 @@ impl From<TimerPrescaler> for Timpre {
 /// Power supply configuration
 /// See RM0433 Rev 4 7.4
 #[cfg(any(pwr_h7rm0399, pwr_h7rm0455, pwr_h7rm0468, pwr_h7rs))]
-#[derive(PartialEq)]
+#[derive(Clone, Copy, PartialEq)]
 pub enum SupplyConfig {
     /// Default power supply configuration.
     /// V CORE Power Domains are supplied from the LDO according to VOS.
@@ -180,6 +180,7 @@ pub enum SMPSSupplyVoltage {
 
 /// Configuration of the core clocks
 #[non_exhaustive]
+#[derive(Clone, Copy)]
 pub struct Config {
     pub hsi: Option<HSIPrescaler>,
     pub hse: Option<Hse>,
diff --git a/embassy-stm32/src/rcc/l.rs b/embassy-stm32/src/rcc/l.rs
index e9266c65b..6120d33be 100644
--- a/embassy-stm32/src/rcc/l.rs
+++ b/embassy-stm32/src/rcc/l.rs
@@ -30,6 +30,7 @@ pub struct Hse {
 }
 
 /// Clocks configuration
+#[derive(Clone, Copy)]
 pub struct Config {
     // base clock sources
     pub msi: Option<MSIRange>,
diff --git a/embassy-stm32/src/rcc/u5.rs b/embassy-stm32/src/rcc/u5.rs
index d6331f512..28545ca51 100644
--- a/embassy-stm32/src/rcc/u5.rs
+++ b/embassy-stm32/src/rcc/u5.rs
@@ -59,6 +59,7 @@ pub struct Pll {
     pub divr: Option<PllDiv>,
 }
 
+#[derive(Clone, Copy)]
 pub struct Config {
     // base clock sources
     pub msi: Option<MSIRange>,
diff --git a/embassy-stm32/src/rcc/wba.rs b/embassy-stm32/src/rcc/wba.rs
index 8e1779d7c..1fee648d4 100644
--- a/embassy-stm32/src/rcc/wba.rs
+++ b/embassy-stm32/src/rcc/wba.rs
@@ -15,6 +15,7 @@ pub struct Hse {
 }
 
 /// Clocks configuration
+#[derive(Clone, Copy)]
 pub struct Config {
     // base clock sources
     pub hsi: bool,
diff --git a/examples/boot/application/stm32wl/memory.x b/examples/boot/application/stm32wl/memory.x
index 5af1723f5..20109e37e 100644
--- a/examples/boot/application/stm32wl/memory.x
+++ b/examples/boot/application/stm32wl/memory.x
@@ -5,8 +5,8 @@ MEMORY
   BOOTLOADER_STATE                  : ORIGIN = 0x08006000, LENGTH = 4K
   FLASH                             : ORIGIN = 0x08008000, LENGTH = 64K
   DFU                               : ORIGIN = 0x08018000, LENGTH = 68K
-  SHARED_RAM                  (rwx) : ORIGIN = 0x20000000, LENGTH = 64
-  RAM                         (rwx) : ORIGIN = 0x20000040, LENGTH = 32K - 64
+  SHARED_RAM                  (rwx) : ORIGIN = 0x20000000, LENGTH = 128
+  RAM                         (rwx) : ORIGIN = 0x20000080, LENGTH = 32K - 128
 }
 
 __bootloader_state_start = ORIGIN(BOOTLOADER_STATE) - ORIGIN(BOOTLOADER);
@@ -21,4 +21,4 @@ SECTIONS
     {
         *(.shared_data)
     } > SHARED_RAM
-}
\ No newline at end of file
+}
diff --git a/examples/stm32wl/memory.x b/examples/stm32wl/memory.x
index 0298caa4b..4590867a8 100644
--- a/examples/stm32wl/memory.x
+++ b/examples/stm32wl/memory.x
@@ -2,8 +2,8 @@ MEMORY
 {
   /* NOTE 1 K = 1 KiBi = 1024 bytes */
   FLASH                             : ORIGIN = 0x08000000, LENGTH = 256K
-  SHARED_RAM                  (rwx) : ORIGIN = 0x20000000, LENGTH = 64
-  RAM                         (rwx) : ORIGIN = 0x20000040, LENGTH = 64K - 64
+  SHARED_RAM                  (rwx) : ORIGIN = 0x20000000, LENGTH = 128
+  RAM                         (rwx) : ORIGIN = 0x20000080, LENGTH = 64K - 128
 }
 
 SECTIONS
@@ -12,4 +12,4 @@ SECTIONS
     {
         *(.shared_data)
     } > SHARED_RAM
-}
\ No newline at end of file
+}