diff --git a/ion/src/device/regs/quadspi.h b/ion/src/device/regs/quadspi.h
new file mode 100644
index 000000000..ed46c3b6b
--- /dev/null
+++ b/ion/src/device/regs/quadspi.h
@@ -0,0 +1,126 @@
+#ifndef REGS_QUADSPI_H
+#define REGS_QUADSPI_H
+
+#include "register.h"
+
+// Quad-SPI register map on STM32 microcontroller
+// See section 12 of the STM32F412 reference manual
+
+class QUADSPI {
+public:
+  class CR : public Register32 { // Control register
+  public:
+    using Register32::Register32;
+    REGS_BOOL_FIELD(EN, 0);
+    REGS_BOOL_FIELD(TCEN, 3); // Lower-power timeout counter enable in memory-mapped mode
+    REGS_BOOL_FIELD(SSHIFT, 4);
+    REGS_FIELD(PRESCALER, uint8_t, 31, 24);
+  };
+
+  class DCR : public Register32 { // Device configuration register
+  public:
+    using Register32::Register32;
+    REGS_BOOL_FIELD(CKMODE, 0); // MODE 0 or 3
+    REGS_FIELD(CSHT, uint8_t, 10, 8); // Chip select minimum high time
+    REGS_FIELD(FSIZE, uint8_t, 20, 16);
+  };
+
+  class SR : Register32 { // Status register
+  public:
+    REGS_BOOL_FIELD(TEF, 0); // Transfer error flag
+    REGS_BOOL_FIELD(TCF, 1); // Transfer complete flag
+    REGS_BOOL_FIELD(BUSY, 5);
+  };
+
+  class FCR : Register32 { // Flag clear register
+  };
+
+  class DLR : public Register32 { // Data length register
+    // In indirect and status-polling modes
+    // Number of bytes to be transferred = DLR + 1
+  };
+
+  class CCR : public Register32 { // Communication configuration register
+  public:
+    using Register32::Register32;
+    enum class Size : uint8_t {
+      OneByte = 0,
+      TwoBytes = 1,
+      ThreeBytes = 2,
+      FourBytes = 3
+    };
+    enum class OperatingMode : uint8_t {
+      NoData = 0,
+      Single = 1,
+      Dual = 2,
+      Quad = 3
+    };
+    enum class FunctionalMode : uint8_t {
+      IndirectWrite = 0,
+      IndirectRead = 1,
+      StatusPolling = 2,
+      MemoryMapped = 3
+    };
+    REGS_FIELD(INSTRUCTION, uint8_t, 7, 0);
+    REGS_FIELD(IMODE, OperatingMode, 9, 8);
+    REGS_FIELD(ADMODE, OperatingMode, 11, 10);
+    REGS_FIELD(ADSIZE, Size, 13, 12);
+    REGS_FIELD(ABMODE, OperatingMode, 15, 14);
+    REGS_FIELD(ABSIZE, Size, 17, 16);
+    REGS_FIELD(DCYC, uint8_t, 22, 18);
+    REGS_FIELD(DMODE, OperatingMode, 25, 24);
+    REGS_FIELD(FMODE, FunctionalMode, 27, 26);
+    REGS_BOOL_FIELD(SIOO, 28);
+  };
+
+  class AR : public Register32 { // Address register
+  };
+
+  class ABR : Register32 { // Alternate bytes register
+  };
+
+  class DR : public Register8 { // Data register
+    /* In indirect (read or write) mode, any data must be written to or read from
+     * the data register, which supports byte, halfword and word access
+     * (aligned to the bottom of the register).
+     * N bytes read/written remove/add N bytes from/to the FIFO.
+     */
+  };
+
+  class PSMKR : Register32 { // Polling status mask register
+  };
+
+  class PSMAR : Register32 { // Polling status match register
+  };
+
+  class PIR : Register32 { // Polling interval register
+  };
+
+  class LPTR : public Register16 { // Low-power timeout register
+    // Period before putting the Flash memory in lower-power state (in memory-mapped mode)
+  };
+
+  constexpr QUADSPI() {};
+
+  REGS_REGISTER_AT(CR, 0x00);
+  REGS_REGISTER_AT(DCR, 0x04);
+  REGS_REGISTER_AT(SR, 0x08);
+  REGS_REGISTER_AT(FCR, 0x0C);
+  REGS_REGISTER_AT(DLR, 0x10);
+  REGS_REGISTER_AT(CCR, 0x14);
+  REGS_REGISTER_AT(AR, 0x18);
+  REGS_REGISTER_AT(ABR, 0x1C);
+  REGS_REGISTER_AT(DR, 0x20);
+  REGS_REGISTER_AT(PSMKR, 0x24);
+  REGS_REGISTER_AT(PSMAR, 0x28);
+  REGS_REGISTER_AT(PIR, 0x2C);
+  REGS_REGISTER_AT(LPTR, 0x30);
+private:
+  constexpr uint32_t Base() const {
+    return 0xA0001000;
+  }
+};
+
+constexpr QUADSPI QUADSPI;
+
+#endif
diff --git a/ion/src/device/regs/regs.h b/ion/src/device/regs/regs.h
index b5fad9e8a..c77040ee7 100644
--- a/ion/src/device/regs/regs.h
+++ b/ion/src/device/regs/regs.h
@@ -16,6 +16,7 @@
 #include "rcc.h"
 #include "rng.h"
 #include "otg.h"
+#include "quadspi.h"
 #include "sdio.h"
 #include "spi.h"
 #include "syscfg.h"