diff --git a/src/mainboard/hp/pavilion_m6_1035dx/agesawrapper.c b/src/mainboard/hp/pavilion_m6_1035dx/agesawrapper.c
index a89ddbe5c2..2720f16743 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/agesawrapper.c
+++ b/src/mainboard/hp/pavilion_m6_1035dx/agesawrapper.c
@@ -26,9 +26,12 @@
 #include "BiosCallOuts.h"
 #include "PlatformGnbPcieComplex.h"
 
+#define __SIMPLE_DEVICE__
+
 #include <arch/acpi.h>
 #include <arch/io.h>
 #include <cbmem.h>
+#include <cpu/x86/msr.h>
 #include <cpu/x86/mtrr.h>
 #include <device/device.h>
 #include <string.h>
@@ -79,53 +82,40 @@ VOID *AcpiIvrs    = NULL;
  *                          L O C A L    F U N C T I O N S
  *---------------------------------------------------------------------------------------
  */
-UINT32
-agesawrapper_amdinitcpuio (
-	VOID
-	)
+uint32_t agesawrapper_amdinitcpuio(void)
 {
-	AGESA_STATUS                  Status;
-	UINT64                        MsrReg;
-	UINT32                        PciData;
-	PCI_ADDR                      PciAddress;
-	AMD_CONFIG_PARAMS             StdHeader;
+	pci_devfn_t dev;
+	msr_t msr;
+	uint32_t reg32;
+
+	dev = PCI_DEV(0, 0x18, 1);
 
 	/* Enable legacy video routing: D18F1xF4 VGA Enable */
-	PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xF4);
-	PciData = 1;
-	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
+	pci_io_write_config32(dev, 0xf4, 1);
 
 	/* The platform BIOS needs to ensure the memory ranges of Hudson legacy
 	 * devices (TPM, HPET, BIOS RAM, Watchdog Timer, I/O APIC and ACPI) are
 	 * set to non-posted regions.
+	 * Last address before processor local APIC at FEE00000
 	 */
-	PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x84);
-	PciData = 0x00FEDF00; /* last address before processor local APIC at FEE00000 */
-	PciData |= 1 << 7;    /* set NP (non-posted) bit */
-	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
-	PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x80);
-	PciData = (0xFED00000 >> 8) | 3; /* lowest NP address is HPET at FED00000 */
-	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
+	pci_io_write_config32(dev, 0x84, 0x00fedf00 | (1 << 7));
+
+
+	/* Lowest NP address is HPET at FED00000 */
+	pci_io_write_config32(dev, 0x80, (0xfed00000 >> 8) | 3);
 
 	/* Map the remaining PCI hole as posted MMIO */
-	PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x8C);
-	PciData = 0x00FECF00; /* last address before non-posted range */
-	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
-	LibAmdMsrRead (0xC001001A, &MsrReg, &StdHeader);
-	MsrReg = (MsrReg >> 8) | 3;
-	PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x88);
-	PciData = (UINT32)MsrReg;
-	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
+	pci_io_write_config32(dev, 0x8C, 0x00fecf00);
+
+	msr = rdmsr(0xc001001a);
+	reg32 = (msr.hi << 24) | (msr.lo >> 8) | 3; /* Equivalent to msr >> 8 */
+	pci_io_write_config32(dev, 0x88, reg32);
 
 	/* Send all IO (0000-FFFF) to southbridge. */
-	PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xC4);
-	PciData = 0x0000F000;
-	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
-	PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xC0);
-	PciData = 0x00000003;
-	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
-	Status = AGESA_SUCCESS;
-	return (UINT32)Status;
+	pci_io_write_config32(dev, 0xc4, 0x0000f000);
+	pci_io_write_config32(dev, 0xc0, 0x00000003);
+
+	return AGESA_SUCCESS;
 }
 
 UINT32
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/agesawrapper.h b/src/mainboard/hp/pavilion_m6_1035dx/agesawrapper.h
index 29eedaf707..aa3cc2edcb 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/agesawrapper.h
+++ b/src/mainboard/hp/pavilion_m6_1035dx/agesawrapper.h
@@ -81,7 +81,7 @@ UINT32 agesawrapper_amdinitpost (void);
 UINT32 agesawrapper_amdinitmid (void);
 UINT32 agesawrapper_amdreadeventlog (UINT8 HeapStatus);
 UINT32 agesawrapper_amdinitmmio (void);
-UINT32 agesawrapper_amdinitcpuio (void);
+uint32_t agesawrapper_amdinitcpuio (void);
 void *agesawrapper_getlateinitptr (int pick);
 UINT32 agesawrapper_amdlaterunaptask (UINT32 Func, UINT32 Data, void *ConfigPtr);
 UINT32 agesawrapper_amdS3Save(VOID);