Extend storage allocated for Mifare keys to 4095 keys. Update documentation on the feature and memory map

CHANGELOG.md

@@ -3,6 +3,7 @@ All notable changes to this project will be documented in this file.
 This project uses the changelog in accordance with [keepchangelog](http://keepachangelog.com/). Please use this to write notable changes, which is not the same as git commit log...
 
 ## [unreleased][unreleased]
+- Extended area for Mifare keys in SPI flash to hold 4095 keys (@piotrva)
 - Fixed DESFire D40 secure channel crypto (@nvx)
 - Fixed `hf mfp info` fix signature check on 4b UID cards (@doegox)
 - Automatically set maximum read/write block when using predefined types in `hf_mf_ultimatecard` script (@piotrva)

doc/ext_flash_notes.md

@@ -63,8 +63,8 @@ Page 3:
 Page3 is used as follows by the Proxmark3 RDV4 firmware:
 
 * **MF_KEYS**
-  * offset: page 3 sector  9 (0x9) @ 3*0x10000+9*0x1000=0x39000
-  * length: 2 sectors
+  * offset: page 3 sector  5 (0x5) @ 3*0x10000+5*0x1000=0x35000
+  * length: 6 sectors
 
 * **ICLASS_KEYS**
   * offset: page 3 sector 11 (0xB) @ 3*0x10000+11*0x1000=0x3B000

include/pmflash.h

@@ -28,7 +28,7 @@
 // 0x3E000 - 1 4kb sector = settings
 // 0x3D000 - 1 4kb sector = default T55XX keys dictionary
 // 0x3B000 - 1 4kb sector = default ICLASS keys dictionary
-// 0x38000 - 3 4kb sectors = default MFC keys dictionary
+// 0x35000 - 6 4kb sectors = default MFC keys dictionary
 //
 #ifndef FLASH_MEM_BLOCK_SIZE
 # define FLASH_MEM_BLOCK_SIZE   256
@@ -95,9 +95,9 @@
 # define DEFAULT_ICLASS_KEYS_OFFSET_P(p64k) (DEFAULT_T55XX_KEYS_OFFSET_P(p64k) - DEFAULT_ICLASS_KEYS_LEN)
 #endif
 
-// Reserved space for MIFARE Keys = 12 kb
+// Reserved space for MIFARE Keys = 24 kb
 #ifndef DEFAULT_MF_KEYS_OFFSET
-# define DEFAULT_MF_KEYS_LEN (0x3000)
+# define DEFAULT_MF_KEYS_LEN (0x6000)
 # define DEFAULT_MF_KEYS_OFFSET (DEFAULT_ICLASS_KEYS_OFFSET - DEFAULT_MF_KEYS_LEN)
 # define DEFAULT_MF_KEYS_MAX ((DEFAULT_MF_KEYS_LEN - 2) / 6)
 #endif