diff --git a/config/src/lib.rs b/config/src/lib.rs
index 08f6eaf..155222f 100644
--- a/config/src/lib.rs
+++ b/config/src/lib.rs
@@ -16,5 +16,7 @@
 pub const CAPSULE_MAILBOX: usize = 0x50005;
 
 pub const CMD_ELFLOADER_BOOT_SEL4: usize = 10;
-
 pub const CMD_DPRINTF_PRINT: usize = 0;
+
+pub const IRQ_UART0_TX_WATERMARK: u32 = 1;   // kTopMatchaPlicIrqIdUart0TxWatermark @ top_matcha.h
+pub const IRQ_UART0_RX_PARITY_ERR: u32 = 8;  // kTopMatchaPlicIrqIdUart0RxParityErr @ top_matcha.h
diff --git a/platform/src/chip.rs b/platform/src/chip.rs
index dd37838..f339bbf 100644
--- a/platform/src/chip.rs
+++ b/platform/src/chip.rs
@@ -12,6 +12,7 @@
 use crate::timer;
 use crate::uart;
 use matcha_hal::plic_hal;
+use matcha_config::*;
 
 PMPConfigMacro!(4);
 
@@ -20,9 +21,6 @@
 pub const CHIP_PERIPH_FREQ: u32 = 125_000;
 pub const CHIP_UART_BPS: u32 = 9600;
 
-pub const UART0_TX_WATERMARK: u32 = 1;
-pub const UART0_RX_PARITY_ERR: u32 = 8;
-
 pub struct Matcha<A: 'static + Alarm<'static>> {
     userspace_kernel_boundary: SysCall,
     pmp: PMP,
@@ -47,7 +45,7 @@
     unsafe fn handle_plic_interrupts(&self) {
         while let Some(interrupt) = plic_hal::next_pending() {
             match interrupt {
-                UART0_TX_WATERMARK..=UART0_RX_PARITY_ERR => uart::UART0.handle_interrupt(),
+                IRQ_UART0_TX_WATERMARK..=IRQ_UART0_RX_PARITY_ERR => uart::UART0.handle_interrupt(),
                 _ => debug!("Pidx {}", interrupt),
             }
             plic_hal::complete(interrupt);