diff --git a/left/src/main.c b/left/src/main.c
index 3558079..f4a339d 100644
--- a/left/src/main.c
+++ b/left/src/main.c
@@ -42,6 +42,33 @@ key_matrix_t keyMatrix = {
 #endif
 };
 
+typedef struct BootloaderConfiguration
+{
+    uint32_t tag;                          // Magic number to verify bootloader configuration is valid. Must be set to 'kcfg'.
+    uint32_t reserved[3];
+    uint8_t enabledPeripherals;            // Bitfield of peripherals to enable.
+                                           // bit 0 - LPUART, bit 1 - I2C, bit 2 - SPI, bit 3 - CAN, bit 4 - USB
+    uint8_t i2cSlaveAddress;               // If not 0xFF, used as the 7-bit I2C slave address.
+                                           // If 0xFF, defaults to 0x10 for I2C slave address.
+    uint16_t peripheralDetectionTimeoutMs; // Timeout in milliseconds for active peripheral detection.
+                                           // If 0xFFFF, defaults to 5 seconds.
+    uint16_t reserved2[2];
+    uint32_t reserved3;
+    uint8_t clockFlags;   // The flags in the clockFlags configuration field are enabled if the corresponding bit is cleared (0).
+                          // bit 0 - HighSpeed Enable high speed mode (i.e., 48 MHz).
+    uint8_t clockDivider; // Inverted value of the divider to use for core and bus clocks when in high speed mode.
+} bootloader_config_t;
+
+__attribute__((section(".BootloaderConfig"))) const bootloader_config_t BootloaderConfig =
+{
+    .tag = 0x6766636B,                    // Magic Number
+    .enabledPeripherals = 0xE2,           // Enabled Peripheral: I2C
+    .i2cSlaveAddress = 0x10,              // Use user-defined I2C address
+    .peripheralDetectionTimeoutMs = 1000, // Use user-defined timeout (ms)
+    .clockFlags = 0xFF,                   // Disable High speed mode
+    .clockDivider = 0xFF,                 // Use clock divider (0)
+};
+
 void JumpToBootloader() {
     uint32_t runBootloaderAddress;
     void (*runBootloader)(void * arg);