diff --git a/armsrc/Standalone/hf_young.c b/armsrc/Standalone/hf_young.c
index 3ef9e37cf..906d0b36c 100644
--- a/armsrc/Standalone/hf_young.c
+++ b/armsrc/Standalone/hf_young.c
@@ -8,14 +8,16 @@
 //-----------------------------------------------------------------------------
 // main code for HF standalone mode Mifare /sniff/emulation by Craig Young
 //-----------------------------------------------------------------------------
+
 #include "hf_young.h"
+#include "common.h"
 
 typedef struct {
     uint8_t uid[10];
     uint8_t uidlen;
     uint8_t atqa[2];
     uint8_t sak;
-} __attribute__((__packed__)) card_clone_t;
+} PACKED card_clone_t;
 
 
 void ModInfo(void) {
diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index 8895fd327..d9c17e3b3 100644
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -13,6 +13,7 @@
 #include <inttypes.h>
 #include "usb_cdc.h"
 #include "proxmark3.h"
+#include "pmflash.h"
 #include "apps.h"
 #include "fpga.h"
 #include "util.h"
diff --git a/armsrc/flashmem.c b/armsrc/flashmem.c
index 4584d41b2..ad4861ce3 100644
--- a/armsrc/flashmem.c
+++ b/armsrc/flashmem.c
@@ -1,4 +1,5 @@
 #include "flashmem.h"
+#include "pmflash.h"
 
 /* here: use NCPS2 @ PA10: */
 #define SPI_CSR_NUM      2
diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 09a1632cb..96fd3ae37 100644
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -19,6 +19,7 @@
 #include "protocols.h"
 #include "usb_cdc.h" // for usb_poll_validate_length
 #include "common.h"
+#include "pmflash.h"
 #include "flashmem.h" // persistence on mem
 
 //#define START_GAP 31*8 // was 250 // SPEC:  1*8 to 50*8 - typ 15*8 (15fc)
diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index 26b6583fc..2d56a8a37 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -14,8 +14,11 @@
 //-----------------------------------------------------------------------------
 
 #include "mifarecmd.h"
+
 #include <inttypes.h>
 
+#include "pmflash.h"
+
 #ifndef HARDNESTED_AUTHENTICATION_TIMEOUT
 # define HARDNESTED_AUTHENTICATION_TIMEOUT  848     // card times out 1ms after wrong authentication (according to NXP documentation)
 #endif
diff --git a/client/cmdflashmem.h b/client/cmdflashmem.h
index 3c37239b7..790d42a5d 100644
--- a/client/cmdflashmem.h
+++ b/client/cmdflashmem.h
@@ -15,10 +15,11 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
+#include "pmflash.h"
+#include "common.h"
 #include "proxmark3.h"
 #include "ui.h"
 #include "cmdparser.h"
-#include "common.h"
 #include "util.h"
 #include "util_posix.h"         // msclock
 #include "loclass/fileutils.h"  //saveFile
diff --git a/client/deprecated-hid-flasher/flasher/elf.h b/client/deprecated-hid-flasher/flasher/elf.h
index 0551cbd76..eef2863d8 100644
--- a/client/deprecated-hid-flasher/flasher/elf.h
+++ b/client/deprecated-hid-flasher/flasher/elf.h
@@ -9,6 +9,8 @@
 #ifndef __ELF_H__
 #define __ELF_H__
 
+#include "proxmark3.h"
+
 typedef struct {
     uint32_t p_type;
     uint32_t p_offset;
@@ -18,7 +20,7 @@ typedef struct {
     uint32_t p_memsz;
     uint32_t p_flags;
     uint32_t p_align;
-} __attribute__((__packed__)) Elf32_Phdr;
+} PACKED Elf32_Phdr;
 
 #define EI_NIDENT 16
 
@@ -37,7 +39,7 @@ typedef struct {
     uint16_t e_shentsize;
     uint16_t e_shnum;
     uint16_t e_shtrndx;
-} __attribute__((__packed__)) Elf32_Ehdr;
+} PACKED Elf32_Ehdr;
 
 #define PT_NULL      0
 #define PT_LOAD      1
diff --git a/client/deprecated-hid-flasher/flasher/proxmark3.h b/client/deprecated-hid-flasher/flasher/proxmark3.h
index f5dd2b7fa..c9e42efd8 100644
--- a/client/deprecated-hid-flasher/flasher/proxmark3.h
+++ b/client/deprecated-hid-flasher/flasher/proxmark3.h
@@ -14,4 +14,16 @@
 
 #define PROXPROMPT "proxmark3> "
 
+#ifdef _MSC_VER
+typedef DWORD uint32_t;
+typedef BYTE uint8_t;
+#define PACKED
+// stuff
+#else
+#include <stdint.h>
+#include <stdbool.h>
+#define PACKED __attribute__((packed))
+#endif
+
+
 #endif
diff --git a/client/deprecated-hid-flasher/flasher/usb_cmd.h b/client/deprecated-hid-flasher/flasher/usb_cmd.h
index 2b383faf8..60c359e5a 100644
--- a/client/deprecated-hid-flasher/flasher/usb_cmd.h
+++ b/client/deprecated-hid-flasher/flasher/usb_cmd.h
@@ -12,16 +12,8 @@
 
 #ifndef __USB_CMD_H
 #define __USB_CMD_H
-#ifdef _MSC_VER
-typedef DWORD uint32_t;
-typedef BYTE uint8_t;
-#define PACKED
-// stuff
-#else
-#include <stdint.h>
-#include <stdbool.h>
-#define PACKED __attribute__((packed))
-#endif
+
+#include "proxmark3.h"
 
 typedef struct {
     uint32_t    cmd;
diff --git a/client/elf.h b/client/elf.h
index 0551cbd76..50533224f 100644
--- a/client/elf.h
+++ b/client/elf.h
@@ -9,6 +9,8 @@
 #ifndef __ELF_H__
 #define __ELF_H__
 
+#include "common.h"
+
 typedef struct {
     uint32_t p_type;
     uint32_t p_offset;
@@ -18,7 +20,7 @@ typedef struct {
     uint32_t p_memsz;
     uint32_t p_flags;
     uint32_t p_align;
-} __attribute__((__packed__)) Elf32_Phdr;
+} PACKED Elf32_Phdr;
 
 #define EI_NIDENT 16
 
@@ -37,7 +39,7 @@ typedef struct {
     uint16_t e_shentsize;
     uint16_t e_shnum;
     uint16_t e_shtrndx;
-} __attribute__((__packed__)) Elf32_Ehdr;
+} PACKED Elf32_Ehdr;
 
 #define PT_NULL      0
 #define PT_LOAD      1
diff --git a/client/lualibs/read14a.lua b/client/lualibs/read14a.lua
index f68dfff81..3bf243235 100644
--- a/client/lualibs/read14a.lua
+++ b/client/lualibs/read14a.lua
@@ -60,7 +60,7 @@ local function parse14443a(data)
         uint8_t sak;
         uint8_t ats_len;
         uint8_t ats[256];
-    } __attribute__((__packed__)) iso14a_card_select_t;
+    } PACKED iso14a_card_select_t;
     --]]
 
     local count, uid, uidlen, atqa, sak, ats_len, ats = bin.unpack('H10CH2CCH', data)
diff --git a/client/lualibs/read14b.lua b/client/lualibs/read14b.lua
index 0be958e25..67d2bd469 100644
--- a/client/lualibs/read14b.lua
+++ b/client/lualibs/read14b.lua
@@ -39,7 +39,7 @@ local function parse1443b(data)
         uint8_t atqb[7];
         uint8_t chipid;
         uint8_t cid;
-    } __attribute__((__packed__)) iso14b_card_select_t;
+    } PACKED iso14b_card_select_t;
 
     --]]
 
diff --git a/client/util.h b/client/util.h
index 3d2de1dc7..3f677df7a 100644
--- a/client/util.h
+++ b/client/util.h
@@ -20,100 +20,12 @@
 #include <time.h>
 #include "ui.h"     // PrintAndLog
 #include "commonutil.h"
-
-#ifdef _MSC_VER
-#define PACKED
-#else
-#define PACKED __attribute__((packed))
-#endif
+#include "common.h"
 
 #ifdef ANDROID
 #include <endian.h>
 #endif
 
-#ifndef ROTR
-# define ROTR(x,n) (((uintmax_t)(x) >> (n)) | ((uintmax_t)(x) << ((sizeof(x) * 8) - (n))))
-#endif
-#ifndef ROTL
-# define ROTL(x,n) (((uintmax_t)(x) << (n)) | ((uintmax_t)(x) >> ((sizeof(x) * 8) - (n))))
-#endif
-
-#ifndef MIN
-# define MIN(a, b) (((a) < (b)) ? (a) : (b))
-#endif
-#ifndef MAX
-# define MAX(a, b) (((a) > (b)) ? (a) : (b))
-#endif
-
-// endian change for 64bit
-#ifdef __GNUC__
-#ifndef BSWAP_64
-#define BSWAP_64(x) __builtin_bswap64(x)
-#endif
-#else
-#ifdef _MSC_VER
-#ifndef BSWAP_64
-#define BSWAP_64(x) _byteswap_uint64(x)
-#endif
-#else
-#ifndef BSWAP_64
-#define BSWAP_64(x) \
-    (((uint64_t)(x) << 56) | \
-     (((uint64_t)(x) << 40) & 0xff000000000000ULL) | \
-     (((uint64_t)(x) << 24) & 0xff0000000000ULL) | \
-     (((uint64_t)(x) << 8)  & 0xff00000000ULL) | \
-     (((uint64_t)(x) >> 8)  & 0xff000000ULL) | \
-     (((uint64_t)(x) >> 24) & 0xff0000ULL) | \
-     (((uint64_t)(x) >> 40) & 0xff00ULL) | \
-     ((uint64_t)(x)  >> 56))
-#endif
-#endif
-#endif
-
-// endian change for 32bit
-#ifdef __GNUC__
-#ifndef BSWAP_32
-#define BSWAP_32(x) __builtin_bswap32(x)
-#endif
-#else
-#ifdef _MSC_VER
-#ifndef BSWAP_32
-#define BSWAP_32(x) _byteswap_ulong(x)
-#endif
-#else
-#ifndef BSWAP_32
-# define BSWAP_32(x) \
-    ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) | \
-     (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
-#endif
-#endif
-#endif
-
-#define EVEN                        0
-#define ODD                         1
-
-// Nibble logic
-#ifndef NIBBLE_HIGH
-# define NIBBLE_HIGH(b) ( (b & 0xF0) >> 4 )
-#endif
-#ifndef NIBBLE_LOW
-# define NIBBLE_LOW(b)  ( b & 0x0F )
-#endif
-#ifndef CRUMB
-# define CRUMB(b,p)    (((b & (0x3 << p) ) >> p ) & 0xF)
-#endif
-#ifndef SWAP_NIBBLE
-# define SWAP_NIBBLE(b)  ( (NIBBLE_LOW(b)<< 4) | NIBBLE_HIGH(b))
-#endif
-
-// Binary Encoded Digit
-#ifndef BCD2DEC
-# define BCD2DEC(bcd) HornerScheme(bcd, 0x10, 10)
-#endif
-#ifndef DEC2BCD
-# define DEC2BCD(dec) HornerScheme(dec, 10, 0x10)
-#endif
-
 // used for save/load files
 #ifndef FILE_PATH_SIZE
 # define FILE_PATH_SIZE 1000
diff --git a/include/common.h b/include/common.h
index 3dbf77622..dec2261ec 100644
--- a/include/common.h
+++ b/include/common.h
@@ -19,9 +19,20 @@ extern "C" {
 #include <stddef.h>
 #include <stdint.h>
 #include <stdbool.h>
-#include <at91sam7s512.h>
+
 typedef unsigned char byte_t;
 
+#ifdef _MSC_VER
+typedef DWORD uint32_t;
+typedef BYTE uint8_t;
+#define PACKED
+// stuff
+#else
+#include <stdint.h>
+#include <stdbool.h>
+#define PACKED __attribute__((packed))
+#endif
+
 // debug
 #define DBG_NONE          0 // no messages
 #define DBG_ERROR         1 // errors only
@@ -30,9 +41,6 @@ typedef unsigned char byte_t;
 #define DBG_EXTENDED      4 // errors + info + debug + breaking debug messages
 extern int DBGLEVEL;
 
-// Flashmem spi baudrate
-extern uint32_t FLASHMEM_SPIBAUDRATE;
-
 // reader voltage field detector
 #define MF_MINFIELDV      4000
 
@@ -49,74 +57,87 @@ extern uint32_t FLASHMEM_SPIBAUDRATE;
 #endif
 #define RAMFUNC __attribute((long_call, section(".ramfunc")))
 
-// RDV40 Section
-// 256kb divided into 4k sectors.
-//
-// 0x3F000 - 1 4kb sector = signature
-// 0x3E000 - 1 4kb sector = settings
-// 0x3D000 - 1 4kb sector = default T55XX keys dictionary
-// 0x3B000 - 1 4kb sector = default ICLASS keys dictionary
-// 0x39000 - 2 4kb sectors = default MFC keys dictionary
-//
-#ifndef FLASH_MEM_BLOCK_SIZE
-# define FLASH_MEM_BLOCK_SIZE   256
+#ifndef ROTR
+# define ROTR(x,n) (((uintmax_t)(x) >> (n)) | ((uintmax_t)(x) << ((sizeof(x) * 8) - (n))))
 #endif
 
-#ifndef FLASH_MEM_MAX_SIZE
-# define FLASH_MEM_MAX_SIZE     0x40000  // (262144)
+#ifndef ROTL
+# define ROTL(x,n) (((uintmax_t)(x) << (n)) | ((uintmax_t)(x) >> ((sizeof(x) * 8) - (n))))
 #endif
 
-#ifndef FLASH_MEM_MAX_4K_SECTOR
-# define FLASH_MEM_MAX_4K_SECTOR   0x3F000
+// endian change for 64bit
+#ifdef __GNUC__
+#ifndef BSWAP_64
+#define BSWAP_64(x) __builtin_bswap64(x)
+#endif
+#else
+#ifdef _MSC_VER
+#ifndef BSWAP_64
+#define BSWAP_64(x) _byteswap_uint64(x)
+#endif
+#else
+#ifndef BSWAP_64
+#define BSWAP_64(x) \
+    (((uint64_t)(x) << 56) | \
+     (((uint64_t)(x) << 40) & 0xff000000000000ULL) | \
+     (((uint64_t)(x) << 24) & 0xff0000000000ULL) | \
+     (((uint64_t)(x) << 8)  & 0xff00000000ULL) | \
+     (((uint64_t)(x) >> 8)  & 0xff000000ULL) | \
+     (((uint64_t)(x) >> 24) & 0xff0000ULL) | \
+     (((uint64_t)(x) >> 40) & 0xff00ULL) | \
+     ((uint64_t)(x)  >> 56))
+#endif
+#endif
 #endif
 
-
-#ifndef FLASH_MEM_ID_LEN
-# define FLASH_MEM_ID_LEN 8
+// endian change for 32bit
+#ifdef __GNUC__
+#ifndef BSWAP_32
+#define BSWAP_32(x) __builtin_bswap32(x)
+#endif
+#else
+#ifdef _MSC_VER
+#ifndef BSWAP_32
+#define BSWAP_32(x) _byteswap_ulong(x)
+#endif
+#else
+#ifndef BSWAP_32
+# define BSWAP_32(x) \
+    ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) | \
+     (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
+#endif
+#endif
 #endif
 
-#ifndef FLASH_MEM_SIGNATURE_LEN
-# define FLASH_MEM_SIGNATURE_LEN 128
+#define EVEN                        0
+#define ODD                         1
+
+// Nibble logic
+#ifndef NIBBLE_HIGH
+# define NIBBLE_HIGH(b) ( (b & 0xF0) >> 4 )
 #endif
 
-#ifndef FLASH_MEM_SIGNATURE_OFFSET
-// -1 for historical compatibility with already released Proxmark3 RDV4.0 devices
-# define FLASH_MEM_SIGNATURE_OFFSET (FLASH_MEM_MAX_SIZE - FLASH_MEM_SIGNATURE_LEN - 1)
+#ifndef NIBBLE_LOW
+# define NIBBLE_LOW(b)  ( b & 0x0F )
 #endif
 
-#ifndef T55XX_CONFIG_LEN
-# define T55XX_CONFIG_LEN sizeof( t55xx_config )
+#ifndef CRUMB
+# define CRUMB(b,p)    (((b & (0x3 << p) ) >> p ) & 0xF)
 #endif
 
-#ifndef T55XX_CONFIG_OFFSET
-# define T55XX_CONFIG_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x2000)
+#ifndef SWAP_NIBBLE
+# define SWAP_NIBBLE(b)  ( (NIBBLE_LOW(b)<< 4) | NIBBLE_HIGH(b))
 #endif
 
-// Reserved space for T55XX PWD = 4 kb
-#ifndef DEFAULT_T55XX_KEYS_OFFSET
-# define DEFAULT_T55XX_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x3000)
+// Binary Encoded Digit
+#ifndef BCD2DEC
+# define BCD2DEC(bcd) HornerScheme(bcd, 0x10, 10)
 #endif
 
-// Reserved space for iClass keys = 4 kb
-#ifndef DEFAULT_ICLASS_KEYS_OFFSET
-# define DEFAULT_ICLASS_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x4000)
+#ifndef DEC2BCD
+# define DEC2BCD(dec) HornerScheme(dec, 10, 0x10)
 #endif
 
-// Reserved space for MIFARE Keys = 8 kb
-#ifndef DEFAULT_MF_KEYS_OFFSET
-# define DEFAULT_MF_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x6000)
-#endif
-
-
-
-// RDV40,  validation structure to help identifying that client/firmware is talking with RDV40
-typedef struct {
-    uint8_t magic[4];
-    uint8_t flashid[FLASH_MEM_ID_LEN];
-    uint8_t signature[FLASH_MEM_SIGNATURE_LEN];
-} __attribute__((__packed__)) rdv40_validation_t;
-
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/hitag.h b/include/hitag.h
index f57f1180a..9df93fcf7 100644
--- a/include/hitag.h
+++ b/include/hitag.h
@@ -14,11 +14,7 @@
 #ifndef HITAG_H__
 #define HITAG_H__
 
-#ifdef _MSC_VER
-#define PACKED
-#else
-#define PACKED __attribute__((packed))
-#endif
+#include "common.h"
 
 typedef enum {
     RHTSF_CHALLENGE           = 01,
diff --git a/include/mifare.h b/include/mifare.h
index 87ba3a74e..9d444e833 100644
--- a/include/mifare.h
+++ b/include/mifare.h
@@ -46,7 +46,7 @@ typedef struct {
     uint8_t sak;
     uint8_t ats_len;
     uint8_t ats[256];
-} __attribute__((__packed__)) iso14a_card_select_t;
+} PACKED iso14a_card_select_t;
 
 typedef enum ISO14A_COMMAND {
     ISO14A_CONNECT = (1 << 0),
@@ -129,7 +129,7 @@ typedef struct {
 typedef struct {
     uint8_t atr_len;
     uint8_t atr[30];
-} __attribute__((__packed__)) smart_card_atr_t;
+} PACKED smart_card_atr_t;
 
 typedef enum SMARTCARD_COMMAND {
     SC_CONNECT = (1 << 0),
@@ -167,7 +167,7 @@ typedef struct {
     uint8_t iccode[2];
     uint8_t mrt[6];
     uint8_t servicecode[2];
-} __attribute__((__packed__)) felica_card_select_t;
+} PACKED felica_card_select_t;
 
 typedef enum FELICA_COMMAND {
     FELICA_CONNECT = (1 << 0),
diff --git a/include/pm3_cmd.h b/include/pm3_cmd.h
index 284b072eb..d271d3099 100644
--- a/include/pm3_cmd.h
+++ b/include/pm3_cmd.h
@@ -13,20 +13,11 @@
 #ifndef __PM3_CMD_H
 #define __PM3_CMD_H
 
+#include "common.h"
+
 // Use it e.g. when using slow links such as BT
 #define USART_SLOW_LINK
 
-#ifdef _MSC_VER
-typedef DWORD uint32_t;
-typedef BYTE uint8_t;
-#define PACKED
-// stuff
-#else
-#include <stdint.h>
-#include <stdbool.h>
-#define PACKED __attribute__((packed))
-#endif
-
 #define PM3_CMD_DATA_SIZE 512
 #define PM3_CMD_DATA_SIZE_MIX ( PM3_CMD_DATA_SIZE - 3 * sizeof(uint64_t) )
 
diff --git a/include/pmflash.h b/include/pmflash.h
new file mode 100644
index 000000000..a76b90dae
--- /dev/null
+++ b/include/pmflash.h
@@ -0,0 +1,97 @@
+//-----------------------------------------------------------------------------
+// (c) RFID Research Group - 2019
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//
+//-----------------------------------------------------------------------------
+// RDV4 flash constants
+//-----------------------------------------------------------------------------
+
+#ifndef __PMFLASH_H
+#define __PMFLASH_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "common.h"
+
+// Flashmem spi baudrate
+extern uint32_t FLASHMEM_SPIBAUDRATE;
+
+// RDV40 Section
+// 256kb divided into 4k sectors.
+//
+// 0x3F000 - 1 4kb sector = signature
+// 0x3E000 - 1 4kb sector = settings
+// 0x3D000 - 1 4kb sector = default T55XX keys dictionary
+// 0x3B000 - 1 4kb sector = default ICLASS keys dictionary
+// 0x39000 - 2 4kb sectors = default MFC keys dictionary
+//
+#ifndef FLASH_MEM_BLOCK_SIZE
+# define FLASH_MEM_BLOCK_SIZE   256
+#endif
+
+#ifndef FLASH_MEM_MAX_SIZE
+# define FLASH_MEM_MAX_SIZE     0x40000  // (262144)
+#endif
+
+#ifndef FLASH_MEM_MAX_4K_SECTOR
+# define FLASH_MEM_MAX_4K_SECTOR   0x3F000
+#endif
+
+
+#ifndef FLASH_MEM_ID_LEN
+# define FLASH_MEM_ID_LEN 8
+#endif
+
+#ifndef FLASH_MEM_SIGNATURE_LEN
+# define FLASH_MEM_SIGNATURE_LEN 128
+#endif
+
+#ifndef FLASH_MEM_SIGNATURE_OFFSET
+// -1 for historical compatibility with already released Proxmark3 RDV4.0 devices
+# define FLASH_MEM_SIGNATURE_OFFSET (FLASH_MEM_MAX_SIZE - FLASH_MEM_SIGNATURE_LEN - 1)
+#endif
+
+#ifndef T55XX_CONFIG_LEN
+# define T55XX_CONFIG_LEN sizeof( t55xx_config )
+#endif
+
+#ifndef T55XX_CONFIG_OFFSET
+# define T55XX_CONFIG_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x2000)
+#endif
+
+// Reserved space for T55XX PWD = 4 kb
+#ifndef DEFAULT_T55XX_KEYS_OFFSET
+# define DEFAULT_T55XX_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x3000)
+#endif
+
+// Reserved space for iClass keys = 4 kb
+#ifndef DEFAULT_ICLASS_KEYS_OFFSET
+# define DEFAULT_ICLASS_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x4000)
+#endif
+
+// Reserved space for MIFARE Keys = 8 kb
+#ifndef DEFAULT_MF_KEYS_OFFSET
+# define DEFAULT_MF_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x6000)
+#endif
+
+// RDV40,  validation structure to help identifying that client/firmware is talking with RDV40
+typedef struct {
+    uint8_t magic[4];
+    uint8_t flashid[FLASH_MEM_ID_LEN];
+    uint8_t signature[FLASH_MEM_SIGNATURE_LEN];
+} PACKED rdv40_validation_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __PMFLASH_H
\ No newline at end of file
diff --git a/include/proxmark3.h b/include/proxmark3.h
index 8748e82d8..469713b5b 100644
--- a/include/proxmark3.h
+++ b/include/proxmark3.h
@@ -15,6 +15,7 @@
 #include "at91sam7s512.h"
 #include "config_gpio.h"
 #include "pm3_cmd.h"
+#include "common.h"
 
 #define WDT_HIT()                               AT91C_BASE_WDTC->WDTC_WDCR = 0xa5000001
 
@@ -71,8 +72,6 @@
 #define COTAG_BITS 264
 #endif
 
-//#define PACKED __attribute__((__packed__))
-
 #define LED_A_ON()        HIGH(GPIO_LED_A)
 #define LED_A_OFF()       LOW(GPIO_LED_A)
 #define LED_A_INV()       INVBIT(GPIO_LED_A)
@@ -116,7 +115,7 @@ struct version_information {
     char clean; /* 1: Tree was clean, no local changes. 0: Tree was unclean. 2: Couldn't be determined */
     char gitversion[50]; /* String with the git revision */
     char buildtime[30]; /* string with the build time */
-} __attribute__((packed));
+} PACKED;
 
 #define COMMON_AREA_MAGIC 0x43334d50 // "PM3C"
 #define COMMON_AREA_COMMAND_NONE 0
@@ -129,8 +128,8 @@ struct common_area {
         unsigned int bootrom_present: 1; /* Set when a bootrom that is capable of parsing the common area is present */
         unsigned int osimage_present: 1; /* Set when a osimage that is capable of parsing the common area is present */
         unsigned int button_pressed: 1;
-    } __attribute__((packed)) flags;
+    } PACKED flags;
     int arg1, arg2;
-} __attribute__((packed));
+} PACKED;
 
 #endif