IAP.h

00001 /**    IAP : internal Flash memory access library
00002  *
00003  *        The internal Flash memory access is described in the LPC1768 usermanual. 
00004  *            http://www.nxp.com/documents/user_manual/UM10360.pdf
00005  *
00006  *            Chapter  2: "LPC17xx Memory map"
00007  *            Chapter 32: "LPC17xx Flash memory interface and programming"
00008  *                refering Rev. 01 - 4 January 2010
00009  *
00010  *        Released under the MIT License: http://mbed.org/license/mit
00011  *
00012  *        revision 1.0  09-Mar-2010   1st release
00013  *        revision 1.1  12-Mar-2010   chaged: to make possible to reserve flash area for user
00014  *                                            it can be set by USER_FLASH_AREA_START and USER_FLASH_AREA_SIZE in IAP.h
00015  */
00016 
00017 #ifndef        MBED_IAP
00018 #define        MBED_IAP
00019 
00020 #include    "mbed.h"
00021 
00022 #define     USER_FLASH_AREA_START   FLASH_SECTOR_29
00023 #define     USER_FLASH_AREA_SIZE    (FLASH_SECTOR_SIZE_16_TO_29 * 1)
00024 
00025 /*
00026  *  memory map information is available in next URL also.
00027  *    http://mbed.org/projects/libraries/svn/mbed/trunk/LPC1768/LPC17xx.h
00028  */
00029  
00030 /**    Table for start adress of sectors
00031  *    
00032  *        LPC1768 internal flash memory sector numbers and addresses
00033  *
00034  *        LPC1768 flash memory are and sector number/size
00035  *        Table 568 "Sectors in a LPC17xx device", Section 5. "Sector numbers", usermanual
00036  *
00037  *        0x00000000 - 0x0007FFFF        flash (29 sectors)
00038  *
00039  *      Sector0:     0x00000000 - 0x00000FFF        4K
00040  *      Sector1:     0x00001000 - 0x00001FFF        4K
00041  *      Sector2:     0x00002000 - 0x00002FFF        4K
00042  *      Sector3:     0x00003000 - 0x00003FFF        4K
00043  *      Sector4:     0x00004000 - 0x00004FFF        4K
00044  *      Sector5:     0x00005000 - 0x00005FFF        4K
00045  *      Sector6:     0x00006000 - 0x00006FFF        4K
00046  *      Sector7:     0x00007000 - 0x00007FFF        4K
00047  *      Sector8:     0x00008000 - 0x00008FFF        4K
00048  *      Sector9:     0x00009000 - 0x00009FFF        4K
00049  *      Sector10:    0x0000A000 - 0x0000AFFF        4K
00050  *      Sector11:    0x0000B000 - 0x0000BFFF        4K
00051  *      Sector12:    0x0000C000 - 0x0000CFFF        4K
00052  *      Sector13:    0x0000D000 - 0x0000DFFF        4K
00053  *      Sector14:    0x0000E000 - 0x0000EFFF        4K
00054  *      Sector15:    0x0000F000 - 0x0000FFFF        4K
00055  *
00056  *      Sector16:    0x00010000 - 0x00017FFF        32K
00057  *      Sector17:    0x00018000 - 0x0001FFFF        32K
00058  *      Sector18:    0x00020000 - 0x00027FFF        32K
00059  *      Sector19:    0x00028000 - 0x0002FFFF        32K
00060  *      Sector20:    0x00030000 - 0x00037FFF        32K
00061  *      Sector21:    0x00038000 - 0x0003FFFF        32K
00062  *      Sector22:    0x00040000 - 0x00047FFF        32K
00063  *      Sector23:    0x00048000 - 0x0004FFFF        32K
00064  *      Sector24:    0x00050000 - 0x00057FFF        32K
00065  *      Sector25:    0x00058000 - 0x0005FFFF        32K
00066  *      Sector26:    0x00060000 - 0x00067FFF        32K
00067  *      Sector27:    0x00068000 - 0x0006FFFF        32K
00068  *      Sector28:    0x00070000 - 0x00077FFF        32K
00069  *      Sector29:    0x00078000 - 0x0007FFFF        32K
00070  */
00071  
00072 #define     FLASH_SECTOR_0       0x00000000
00073 #define     FLASH_SECTOR_1       0x00001000
00074 #define     FLASH_SECTOR_2       0x00002000
00075 #define     FLASH_SECTOR_3       0x00003000
00076 #define     FLASH_SECTOR_4       0x00004000
00077 #define     FLASH_SECTOR_5       0x00005000
00078 #define     FLASH_SECTOR_6       0x00006000
00079 #define     FLASH_SECTOR_7       0x00007000
00080 #define     FLASH_SECTOR_8       0x00008000
00081 #define     FLASH_SECTOR_9       0x00009000
00082 #define     FLASH_SECTOR_10      0x0000A000
00083 #define     FLASH_SECTOR_11      0x0000B000
00084 #define     FLASH_SECTOR_12      0x0000C000
00085 #define     FLASH_SECTOR_13      0x0000D000
00086 #define     FLASH_SECTOR_14      0x0000E000
00087 #define     FLASH_SECTOR_15      0x0000F000
00088 #define     FLASH_SECTOR_16      0x00010000
00089 #define     FLASH_SECTOR_17      0x00018000
00090 #define     FLASH_SECTOR_18      0x00020000
00091 #define     FLASH_SECTOR_19      0x00028000
00092 #define     FLASH_SECTOR_20      0x00030000
00093 #define     FLASH_SECTOR_21      0x00038000
00094 #define     FLASH_SECTOR_22      0x00040000
00095 #define     FLASH_SECTOR_23      0x00048000
00096 #define     FLASH_SECTOR_24      0x00050000
00097 #define     FLASH_SECTOR_25      0x00058000
00098 #define     FLASH_SECTOR_26      0x00060000
00099 #define     FLASH_SECTOR_27      0x00068000
00100 #define     FLASH_SECTOR_28      0x00070000
00101 #define     FLASH_SECTOR_29      0x00078000
00102 
00103 #define     FLASH_SECTOR_SIZE_0_TO_15    ( 4 * 1024)
00104 #define     FLASH_SECTOR_SIZE_16_TO_29   (32 * 1024)
00105 
00106 static char * sector_start_adress[]    = {
00107     (char *)FLASH_SECTOR_0,
00108     (char *)FLASH_SECTOR_1,
00109     (char *)FLASH_SECTOR_2,
00110     (char *)FLASH_SECTOR_3,
00111     (char *)FLASH_SECTOR_4,
00112     (char *)FLASH_SECTOR_5,
00113     (char *)FLASH_SECTOR_6,
00114     (char *)FLASH_SECTOR_7,
00115     (char *)FLASH_SECTOR_8,
00116     (char *)FLASH_SECTOR_9,
00117     (char *)FLASH_SECTOR_10,
00118     (char *)FLASH_SECTOR_11,
00119     (char *)FLASH_SECTOR_12,
00120     (char *)FLASH_SECTOR_13,
00121     (char *)FLASH_SECTOR_14,
00122     (char *)FLASH_SECTOR_15,
00123     (char *)FLASH_SECTOR_16,
00124     (char *)FLASH_SECTOR_17,
00125     (char *)FLASH_SECTOR_18,
00126     (char *)FLASH_SECTOR_19,
00127     (char *)FLASH_SECTOR_20,
00128     (char *)FLASH_SECTOR_21,
00129     (char *)FLASH_SECTOR_22,
00130     (char *)FLASH_SECTOR_23,
00131     (char *)FLASH_SECTOR_24,
00132     (char *)FLASH_SECTOR_25,
00133     (char *)FLASH_SECTOR_26,
00134     (char *)FLASH_SECTOR_27,
00135     (char *)FLASH_SECTOR_28,
00136     (char *)FLASH_SECTOR_29    
00137 };
00138 
00139 
00140 /**    Error code by IAP routine
00141  *  
00142  *        Table 588 "ISP Return Codes Summary", Section 7.15 "ISP Return Codes", usermanual
00143  */
00144 
00145 enum error_code
00146     {
00147             CMD_SUCCESS,
00148             INVALID_COMMAND,
00149             SRC_ADDR_ERROR,
00150             DST_ADDR_ERROR,
00151             SRC_ADDR_NOT_MAPPED,
00152             DST_ADDR_NOT_MAPPED,
00153             COUNT_ERROR,
00154             INVALID_SECTOR,
00155             SECTOR_NOT_BLANK,
00156             SECTOR_NOT_PREPARED_FOR_WRITE_OPERATION,
00157             COMPARE_ERROR,
00158             BUSY,
00159             PARAM_ERROR,
00160             ADDR_ERROR,
00161             ADDR_NOT_MAPPED,
00162             CMD_LOCKED,
00163             INVALID_CODE,
00164             INVALID_BAUD_RATE,
00165             INVALID_STOP_BIT,
00166             CODE_READ_PROTECTION_ENABLED
00167     };
00168 
00169 
00170 
00171 /*
00172  *  IAP routine entry
00173  *
00174  *        Chapter 8. "IAP commands", usermanual
00175  */
00176 
00177 #define     IAP_LOCATION    0x1fff1ff1
00178 typedef     void (*IAP_call)(unsigned int [], unsigned int []);
00179 
00180 /**    IAP class
00181  *  
00182  *        Interface for internal flash memory access
00183  */
00184 
00185 
00186 class IAP {
00187 public:
00188 
00189     /*
00190      *  SystemCoreClock ??? :  
00191      *    http://mbed.org/forum/mbed/topic/229/
00192      *    http://mbed.org/users/simon/programs/SystemCoreClock/16mhsh/
00193      */
00194 
00195     
00196     /**    Constructor for IAP
00197      *
00198      */
00199 
00200     IAP() : iap_entry( reinterpret_cast<IAP_call>(IAP_LOCATION) ), cclk_kHz( SystemCoreClock / 1000 ) {}
00201     int read_ID( void );
00202     int read_serial( void );
00203     int blank_check( int start, int end );
00204     int erase( int start, int end );
00205     int prepare( int start, int end );
00206     int write( char *source_addr, char *target_addr, int size );
00207     int compare( char *source_addr, char *target_addr, int size );
00208     
00209     char *reserved_flash_area_start( void );
00210     int   reserved_flash_area_size( void );
00211 
00212 private:
00213     IAP_call        iap_entry;
00214     unsigned int    IAP_command[ 5 ];
00215     unsigned int    IAP_result[ 5 ];
00216     int             cclk_kHz;
00217     
00218     //int cpu_clock( void );
00219 }
00220 ;
00221 
00222 #endif    //  #ifndef  MBED_IAP