diff --git a/cpu/x86/Makefile.x86 b/cpu/x86/Makefile.x86
index af69e98f5..68e7410d5 100644
--- a/cpu/x86/Makefile.x86
+++ b/cpu/x86/Makefile.x86
@@ -1,6 +1,6 @@
 CONTIKI_CPU_DIRS = . drivers
 
-CONTIKI_SOURCEFILES += mtarch.c gdt.c helpers.S idt.c cpu.c
+CONTIKI_SOURCEFILES += mtarch.c gdt.c helpers.S idt.c cpu.c rtc.c
 
 ### Compiler definitions
 CC       = gcc
diff --git a/cpu/x86/drivers/rtc.c b/cpu/x86/drivers/rtc.c
new file mode 100644
index 000000000..84d534003
--- /dev/null
+++ b/cpu/x86/drivers/rtc.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2015, Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "drivers/rtc.h"
+#include "helpers.h"
+#include "interrupt.h"
+
+#define RTC_INDEX_REGISTER   0x70
+#define RTC_TARGET_REGISTER  0x71
+
+static void (*user_callback)(void);
+
+static void
+rtc_handler()
+{
+  user_callback();
+
+  /* Clear Register C otherwise interrupts will not happen again.
+   * Register C is automatically cleared when it is read so we do
+   * a dummy read to clear it.
+   */
+  outb(RTC_INDEX_REGISTER, 0x0C);
+  inb(RTC_TARGET_REGISTER);
+
+  /* Issue the End of Interrupt to PIC */
+  outb(0xA0, 0x20);
+  outb(0x20, 0x20);
+}
+/*---------------------------------------------------------------------------*/
+/* Initialize the Real Time Clock.
+ * @frequency: RTC has very specific values for frequency. They are: 2, 4, 8,
+ *             16, 32, 64, 128, 256, 512, 1024, 2048, 4096, and 8192 Hz.
+ *             value otherwise it will not work properly.
+ * @callback:  This callback is called every time the RTC IRQ is raised.
+ *             It is executed in interrupt context.
+ */
+void
+rtc_init(rtc_frequency_t frequency, void (*callback)(void))
+{
+  uint8_t reg_a, reg_b;
+
+  user_callback = callback;
+
+  /* FIXME: Once we have a proper API to ask PIC what is the IRQ offset, we
+   * should consider using it here.
+   */
+  SET_INTERRUPT_HANDLER(40, 0, rtc_handler);
+
+  /* Select interrupt period to 7.8125 ms */
+  outb(RTC_INDEX_REGISTER, 0x0A);
+  reg_a = inb(RTC_TARGET_REGISTER);
+  reg_a &= 0xF0;
+  reg_a |= frequency;
+  outb(RTC_INDEX_REGISTER, 0x0A);
+  outb(RTC_TARGET_REGISTER, reg_a);
+
+  /* Enable periodic interrupt */
+  outb(RTC_INDEX_REGISTER, 0x0B);
+  reg_b = inb(RTC_TARGET_REGISTER);
+  outb(RTC_INDEX_REGISTER, 0x0B);
+  outb(RTC_TARGET_REGISTER, reg_b | BIT(6));
+
+  /* Unmask IRQ8 */
+  outb(0xA1, 0xFE);
+}
diff --git a/cpu/x86/drivers/rtc.h b/cpu/x86/drivers/rtc.h
new file mode 100644
index 000000000..257accb43
--- /dev/null
+++ b/cpu/x86/drivers/rtc.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2015, Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef RTC_H
+#define RTC_H
+
+typedef enum {
+  RTC_8192_HZ = 2,
+  RTC_4096_HZ = 3,
+  RTC_2048_HZ = 4,
+  RTC_1024_HZ = 5,
+  RTC_512_HZ = 6,
+  RTC_256_HZ = 7,
+  RTC_128_HZ = 8,
+  RTC_64_HZ = 9,
+  RTC_32_HZ = 10,
+  RTC_16_HZ = 11,
+  RTC_8_HZ = 12,
+  RTC_4_HZ = 13,
+  RTC_2_HZ = 14,
+} rtc_frequency_t;
+
+void rtc_init(rtc_frequency_t frequency, void (*callback)(void));
+
+#endif /* RTC_H */
diff --git a/cpu/x86/helpers.S b/cpu/x86/helpers.S
index 694f4ef21..0f9f517b8 100644
--- a/cpu/x86/helpers.S
+++ b/cpu/x86/helpers.S
@@ -42,3 +42,9 @@ outb:
         mov 8(%esp), %al
         out %al, %dx
         ret
+
+.global inb
+inb:
+        mov 4(%esp), %dx
+        in %dx, %al
+        ret
diff --git a/cpu/x86/helpers.h b/cpu/x86/helpers.h
index 4b76bae98..705f37d45 100644
--- a/cpu/x86/helpers.h
+++ b/cpu/x86/helpers.h
@@ -43,4 +43,7 @@ void halt(void) __attribute__((__noreturn__));
  */
 void outb(uint16_t port, uint8_t byte);
 
+/* Wrapper for the assembly 'in' instruction */
+uint8_t inb(uint16_t port);
+
 #endif /* HELPERS_H */