ChibiOS 2.6.8, until I can figure out where to get it from git.

firmware/chibios/os/hal/platforms/LPC13xx/system_LPC13xx.h

@@ -0,0 +1,64 @@
+/**************************************************************************//**
+ * @file     system_LPC13xx.h
+ * @brief    CMSIS Cortex-M3 Device Peripheral Access Layer Header File
+ *           for the NXP LPC13xx Device Series
+ * @version  V1.10
+ * @date     24. November 2010
+ *
+ * @note
+ * Copyright (C) 2009-2010 ARM Limited. All rights reserved.
+ *
+ * @par
+ * ARM Limited (ARM) is supplying this software for use with Cortex-M 
+ * processor based microcontrollers.  This file can be freely distributed 
+ * within development tools that are supporting such ARM based processors. 
+ *
+ * @par
+ * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
+ * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
+ * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
+ * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
+ *
+ ******************************************************************************/
+
+
+#ifndef __SYSTEM_LPC13xx_H
+#define __SYSTEM_LPC13xx_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+extern uint32_t SystemCoreClock;     /*!< System Clock Frequency (Core Clock)  */
+
+
+/**
+ * Initialize the system
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Setup the microcontroller system.
+ *         Initialize the System and update the SystemCoreClock variable.
+ */
+extern void SystemInit (void);
+
+/**
+ * Update SystemCoreClock variable
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Updates the SystemCoreClock with current core Clock 
+ *         retrieved from cpu registers.
+ */
+extern void SystemCoreClockUpdate (void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __SYSTEM_LPC13xx_H */