diff --git a/do_all.sh b/do_all.sh
index 6eeee2d..e3c7cac 100755
--- a/do_all.sh
+++ b/do_all.sh
@@ -16,7 +16,8 @@ cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/i686-elf.cmake .. &&
 make -j$(nproc) &&
 popd &&
 buildtools/grub-iso.sh &&
-mv bootable.iso out/x86-pc.iso
+mv bootable.iso out/x86-pc.iso &&
+cp build/kernel/kernel out/x86-pc.elf
 
 #x86-PC config
 {
@@ -29,7 +30,8 @@ cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/x86_64-elf.cmake .. &&
 make -j$(nproc) &&
 popd &&
 buildtools/grub-iso.sh &&
-mv bootable.iso out/x86_64-pc.iso
+mv bootable.iso out/x86_64-pc.iso &&
+cp build/kernel/kernel out/x86_64-pc.elf
 
 #arm-3ds9 config
 {
diff --git a/kernel/arch/arm/3ds11/start.cpp b/kernel/arch/arm/3ds11/start.cpp
index fb40966..d425139 100644
--- a/kernel/arch/arm/3ds11/start.cpp
+++ b/kernel/arch/arm/3ds11/start.cpp
@@ -3,11 +3,14 @@
 #include <base.hpp>
 #include <config.h>
 #include "../../../mmaps/3ds11.mh"
+#include "../../../hw/pmm/pmm.hpp"
 
 PICAfb term;
+PMM_MMAP lpmm;
 void main();
 extern "C" void start() { main(); }
 void drivers_init() {
+    pmm=(PMM*)(&lpmm);
     setMainTTY(&term);
     --term;
     initVectors();
diff --git a/kernel/arch/arm/3ds9/start.cpp b/kernel/arch/arm/3ds9/start.cpp
index b7fbe53..ed32066 100644
--- a/kernel/arch/arm/3ds9/start.cpp
+++ b/kernel/arch/arm/3ds9/start.cpp
@@ -3,13 +3,16 @@
 #include <base.hpp>
 #include <config.h>
 #include "../../../mmaps/3ds9.mh"
+#include "../../../hw/pmm/pmm.hpp"
 
 PICAfb term;
+PMM_MMAP lpmm;
 void main();
 extern "C" void start() { main();
     for(;;);
 }
 void drivers_init() {
+    pmm=(PMM*)(&lpmm);
     setMainTTY(&term);
     --term;
     initVectors();
diff --git a/kernel/arch/arm/raspi2/flags.cmake b/kernel/arch/arm/raspi2/flags.cmake
index 4652989..5043c1b 100644
--- a/kernel/arch/arm/raspi2/flags.cmake
+++ b/kernel/arch/arm/raspi2/flags.cmake
@@ -1,3 +1,3 @@
-SET(PLATFORM_C_FLAGS "-I../../kernel/arch/arm/3ds11/include -mcpu=cortex-a7 -mlittle-endian -mtune=cortex-a7 -mfloat-abi=hard -mtp=soft -O2")
+SET(PLATFORM_C_FLAGS "-I../../kernel/arch/arm/3ds11/include -mcpu=cortex-a7 -mlittle-endian -mtune=cortex-a7 -mfloat-abi=hard -mtp=soft -O0")
 SET(PLATFORM_CXX_FLAGS "${PLATFORM_C_FLAGS}")
 SET(PLATFORM_ASM_FLAGS "${PLATFORM_C_FLAGS}")
diff --git a/kernel/arch/arm/raspi2/start.cpp b/kernel/arch/arm/raspi2/start.cpp
index 2c28464..63de620 100644
--- a/kernel/arch/arm/raspi2/start.cpp
+++ b/kernel/arch/arm/raspi2/start.cpp
@@ -3,11 +3,14 @@
 #include <base.hpp>
 #include <config.h>
 #include "../../../mmaps/raspi2.mh"
+#include "../../../hw/pmm/pmm.hpp"
 
 Serial term;
+PMM_MMAP lpmm;
 void main();
 extern "C" void start() { main(); }
 void drivers_init() {
+    pmm=(PMM*)(&lpmm);
     setMainTTY(&term);
     --term;
     initVectors();
diff --git a/kernel/arch/x86/pc/flags.cmake b/kernel/arch/x86/pc/flags.cmake
index 06b3777..1ef2bef 100644
--- a/kernel/arch/x86/pc/flags.cmake
+++ b/kernel/arch/x86/pc/flags.cmake
@@ -1,3 +1,3 @@
-SET(PLATFORM_C_FLAGS "-I../../kernel/arch/x86/pc/include")
+SET(PLATFORM_C_FLAGS "-I../../kernel/arch/x86/pc/include -O2")
 SET(PLATFORM_CXX_FLAGS "${PLATFORM_C_FLAGS}")
 SET(PLATFORM_ASM_FLAGS "${PLATFORM_C_FLAGS}")
diff --git a/kernel/arch/x86/pc/start.cpp b/kernel/arch/x86/pc/start.cpp
index d9d2c8c..b1bfe74 100644
--- a/kernel/arch/x86/pc/start.cpp
+++ b/kernel/arch/x86/pc/start.cpp
@@ -7,6 +7,7 @@
 #endif
 #include "../../../hw/pc/8259/pic.hpp"
 #include "../../../hw/pc/idt/idt.hpp"
+#include "../../../hw/pc/pmm/pmm.hpp"
 #include <base.hpp>
 static multiboot_info_t *mb_info;
 #ifndef ENABLE_FRAMEBUFFER
@@ -14,12 +15,14 @@ CGATerm term;
 #else
 VESAfb term(mb_info);
 #endif
+PMM_MB lpmm(mb_info);
 void main();
 extern "C" void start(int eax, multiboot_info_t *ebx) {
     mb_info = ebx;
     main();
 }
 void drivers_init() {
+    pmm=(PMM*)(&lpmm);
     setMainTTY(&term);
     --term;
     initIDT();
diff --git a/kernel/arch/x86_64/pc/flags.cmake b/kernel/arch/x86_64/pc/flags.cmake
index f6c0ea1..ef08166 100644
--- a/kernel/arch/x86_64/pc/flags.cmake
+++ b/kernel/arch/x86_64/pc/flags.cmake
@@ -1,3 +1,3 @@
-SET(PLATFORM_C_FLAGS "-I../../kernel/arch/x86_64/pc/include")
+SET(PLATFORM_C_FLAGS "-I../../kernel/arch/x86_64/pc/include -O2")
 SET(PLATFORM_CXX_FLAGS "${PLATFORM_C_FLAGS}")
 SET(PLATFORM_ASM_FLAGS "${PLATFORM_C_FLAGS}")
diff --git a/kernel/arch/x86_64/pc/start.cpp b/kernel/arch/x86_64/pc/start.cpp
index 40571f4..3ebfcd2 100644
--- a/kernel/arch/x86_64/pc/start.cpp
+++ b/kernel/arch/x86_64/pc/start.cpp
@@ -7,6 +7,7 @@
 #endif
 #include "../../../hw/pc/8259/pic.hpp"
 #include "../../../hw/pc/idt/idt.hpp"
+#include "../../../hw/pc/pmm/pmm.hpp"
 
 #include <base.hpp>
 static multiboot_info_t *mb_info;
@@ -15,12 +16,14 @@ CGATerm term;
 #else
 VESAfb term(mb_info);
 #endif
+PMM_MB lpmm(mb_info);
 void main();
 extern "C" void start(int eax, multiboot_info_t *ebx) {
     mb_info = ebx;
     main();
 }
 void drivers_init() {
+    pmm=(PMM*)(&lpmm);
     setMainTTY(&term);
     --term;
     initIDT();
diff --git a/kernel/hw/pc/pmm/pmm.cpp b/kernel/hw/pc/pmm/pmm.cpp
new file mode 100644
index 0000000..b5e31d9
--- /dev/null
+++ b/kernel/hw/pc/pmm/pmm.cpp
@@ -0,0 +1,21 @@
+#include "pmm.hpp"
+PMM_MB::PMM_MB(multiboot_info_t *mb_info): PMM(0x1000), mb_info(mb_info) {}
+
+PMM_MB::~PMM_MB() {}
+
+auto PMM_MB::isFree(phys_t addr) -> bool {
+    auto mmap = (multiboot_memory_map_t*)((uintptr_t)(mb_info->mmap_addr));
+    bool free=false;
+    for(uint32_t i=0;i<mb_info->mmap_length;i++) {
+        if((mmap[i].addr > addr) || (mmap[i].addr + mmap[i].len < addr))
+            continue;
+        if(mmap[i].type != MULTIBOOT_MEMORY_AVAILABLE)
+            return false;
+        free=true;
+    }
+    if(!free)
+        return false;
+    if(addr == (phys_t)((uintptr_t)mb_info))
+        return false;
+    return PMM::isFree(addr);
+}
diff --git a/kernel/hw/pc/pmm/pmm.hpp b/kernel/hw/pc/pmm/pmm.hpp
new file mode 100644
index 0000000..6fa8a67
--- /dev/null
+++ b/kernel/hw/pc/pmm/pmm.hpp
@@ -0,0 +1,12 @@
+#pragma once
+#include <pmm.hpp>
+#include <multiboot.h>
+class PMM_MB: public PMM {
+    protected:
+        multiboot_info_t *mb_info;
+        virtual auto isFree(phys_t addr) -> bool;
+    public:
+        PMM_MB()=delete;
+        PMM_MB(multiboot_info_t *mb_info);
+        virtual ~PMM_MB();
+};
diff --git a/kernel/hw/pmm/pmm.cpp b/kernel/hw/pmm/pmm.cpp
index a7662cd..f479fd7 100644
--- a/kernel/hw/pmm/pmm.cpp
+++ b/kernel/hw/pmm/pmm.cpp
@@ -79,7 +79,7 @@ PMM_MMAP::PMM_MMAP(): PMM(0x1000) {
     uint8_t *off=(uint8_t*)(&header+1);
     for(uint32_t i=0;i<header.length;i++) {
         MMAPTag &tag = *((MMAPTag*)off);
-        off+=tag.size;
+        off+=tag.size+2;
         switch(tag.id) {
             case 0:
             case 1:
@@ -122,7 +122,7 @@ auto PMM_MMAP::isFree(phys_t addr) -> bool {
     uint8_t *off=(uint8_t*)(&header+1);
     for(uint32_t i=0;i<header.length;i++) {
         MMAPTag &tag = *((MMAPTag*)off);
-        off+=tag.size;
+        off+=tag.size+2;
         if(tag.id != 5)
             continue;
         if((tag.REGION.start > addr) || (tag.REGION.end < addr))
diff --git a/kernel/mmaps/raspi2.mc b/kernel/mmaps/raspi2.mc
index 9070b65..10f7f44 100644
--- a/kernel/mmaps/raspi2.mc
+++ b/kernel/mmaps/raspi2.mc
@@ -1,4 +1,4 @@
-DEVICETYPE CONSOLE
+DEVICETYPE EMBEDDED
 DEVICENAME RASPI2
 CPUARCH ARM
 ENDIAN LITTLE
diff --git a/kernel/src/include/base.hpp b/kernel/src/include/base.hpp
index 6946216..f6862c6 100644
--- a/kernel/src/include/base.hpp
+++ b/kernel/src/include/base.hpp
@@ -1,7 +1,9 @@
 #pragma once
 #include <kobject.hpp>
 #include <tty.hpp>
+#include <pmm.hpp>
 extern TTY *out; ///< main TTY for output
+extern PMM *pmm;
 /***
  * Sets the main TTY to some other TTY object.
  */
diff --git a/kernel/src/object_init.cpp b/kernel/src/object_init.cpp
index 77b2475..4b4c763 100644
--- a/kernel/src/object_init.cpp
+++ b/kernel/src/object_init.cpp
@@ -1,5 +1,6 @@
 #include <base.hpp>
 TTY *out;
+PMM *pmm;
 bool tty_set = false;
 void setMainTTY(TTY *obj) {
     ++*obj;
diff --git a/kernel/src/pmm.cpp b/kernel/src/pmm.cpp
index 976d48a..7cac7d2 100644
--- a/kernel/src/pmm.cpp
+++ b/kernel/src/pmm.cpp
@@ -12,6 +12,23 @@ auto PMM::isFree(phys_t addr) -> bool {
     return true;
 }
 PMM::PMM(phys_t page_size): page_size(page_size), head(nullptr) {
+#ifndef __x86_64__
+    for(phys_t i=page_size; i; i+=page_size) {
+        if(isFree(i))
+            *this << i;
+    }
+#else
+    //Find out highest GB
+    phys_t top=0;
+    for(phys_t i=page_size; i<1024*1024*1024*1024; i+=1024*1024*1024) {
+        if(isFree(i))
+            top=i;
+    }
+    for(phys_t i=page_size; i < top; i+=page_size) {
+        if(isFree(i))
+            *this << i;
+    }
+#endif
 }
 PMM::~PMM() {}