diff --git a/cpu/x86/Makefile.x86_quarkX1000 b/cpu/x86/Makefile.x86_quarkX1000
index d6a258453..76665fd86 100644
--- a/cpu/x86/Makefile.x86_quarkX1000
+++ b/cpu/x86/Makefile.x86_quarkX1000
@@ -2,7 +2,7 @@ include $(CONTIKI)/cpu/x86/Makefile.x86_common
 
 CONTIKI_CPU_DIRS += drivers/legacy_pc init/legacy_pc
 
-CONTIKI_SOURCEFILES += bootstrap_quarkX1000.S rtc.c pit.c pic.c irq.c nmi.c
+CONTIKI_SOURCEFILES += bootstrap_quarkX1000.S rtc.c pit.c pic.c irq.c nmi.c pci.c
 
 CFLAGS += -m32 -march=i586 -mtune=i586
 LDFLAGS += -m32 -T $(CONTIKI)/cpu/x86/quarkX1000.ld
diff --git a/cpu/x86/drivers/legacy_pc/pci.c b/cpu/x86/drivers/legacy_pc/pci.c
new file mode 100644
index 000000000..6ce60f102
--- /dev/null
+++ b/cpu/x86/drivers/legacy_pc/pci.c
@@ -0,0 +1,63 @@
+/*
+ * 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 "pci.h"
+#include "helpers.h"
+
+/* I/O port for PCI configuration address */
+#define PCI_CONFIG_ADDR_PORT 0xCF8
+/* I/O port for PCI configuration data */
+#define PCI_CONFIG_DATA_PORT 0xCFC
+
+/*---------------------------------------------------------------------------*/
+/* Initialize PCI configuration register address in preparation for accessing
+ * the specified register.
+ */
+static void
+set_addr(pci_config_addr_t addr)
+{
+  addr.en_mapping = 1;
+
+  outl(PCI_CONFIG_ADDR_PORT, addr.raw);
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * \brief      Read from the specified PCI configuration register.
+ * \param addr Address of PCI configuration register.
+ * \return     Value read from PCI configuration register.
+ */
+uint32_t
+pci_config_read(pci_config_addr_t addr)
+{
+  set_addr(addr);
+
+  return inl(PCI_CONFIG_DATA_PORT);
+}
+/*---------------------------------------------------------------------------*/
diff --git a/cpu/x86/drivers/legacy_pc/pci.h b/cpu/x86/drivers/legacy_pc/pci.h
new file mode 100644
index 000000000..439cd3fc3
--- /dev/null
+++ b/cpu/x86/drivers/legacy_pc/pci.h
@@ -0,0 +1,61 @@
+/*
+ * 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 CPU_X86_DRIVERS_LEGACY_PC_PCI_H_
+#define CPU_X86_DRIVERS_LEGACY_PC_PCI_H_
+
+#include <stdint.h>
+
+/** PCI configuration register identifier for Base Address Register 0 (BAR0) */
+#define PCI_CONFIG_REG_BAR0 0x10
+
+/**
+ * PCI configuration address
+ *
+ * Refer to Intel Quark SoC X1000 Datasheet, Section 5.5 for more details on
+ * PCI configuration register access.
+ */
+typedef union pci_config_addr {
+  struct {
+    /** Register/offset number.  Least-significant two bits should be zero. */
+    uint32_t reg_off     : 8;
+    uint32_t func        : 3; /**< Function number */
+    uint32_t dev         : 5; /**< Device number */
+    uint32_t bus         : 8; /**< Bus number */
+    uint32_t             : 7;
+    /** Must be set to perform PCI configuration access. */
+    uint32_t en_mapping  : 1;
+  };
+  uint32_t raw;
+} pci_config_addr_t;
+
+uint32_t pci_config_read(pci_config_addr_t addr);
+
+#endif /* CPU_X86_DRIVERS_LEGACY_PC_PCI_H_ */
diff --git a/cpu/x86/helpers.S b/cpu/x86/helpers.S
index 0f9f517b8..c1c73130f 100644
--- a/cpu/x86/helpers.S
+++ b/cpu/x86/helpers.S
@@ -43,8 +43,21 @@ outb:
         out %al, %dx
         ret
 
+.global outl
+outl:
+        mov 4(%esp), %dx
+        mov 8(%esp), %eax
+        out %eax, %dx
+        ret
+
 .global inb
 inb:
         mov 4(%esp), %dx
         in %dx, %al
         ret
+
+.global inl
+inl:
+        mov 4(%esp), %dx
+        in %dx, %eax
+        ret
diff --git a/cpu/x86/helpers.h b/cpu/x86/helpers.h
index 705f37d45..91b120a9e 100644
--- a/cpu/x86/helpers.h
+++ b/cpu/x86/helpers.h
@@ -37,13 +37,12 @@
 
 void halt(void) __attribute__((__noreturn__));
 
-/**
- * Wrapper for the assembly 'out' instruction.
- *
- */
-void outb(uint16_t port, uint8_t byte);
+/** Wrappers for the assembly 'out' instruction. */
+void outb(uint16_t port, uint8_t val);
+void outl(uint16_t port, uint32_t val);
 
-/* Wrapper for the assembly 'in' instruction */
+/** Wrappers for the assembly 'in' instruction */
 uint8_t inb(uint16_t port);
+uint32_t inl(uint16_t port);
 
 #endif /* HELPERS_H */