RX64M, RX71M Group Using the Trusted Memory Function
Contents
1. Disable maskable interrupts flag lt 0 Stop peripheral functions still running after reset R_INIT_StopModule Initial settings of nonexistent ports R_INIT_NonExistentPort Initial clock settings R_INIT_Clock Enable maskable interrupts I flag lt lt 1 Initial port settings R_TM_Portinit LED control led_control Uses LED table in area protected by TM Less than 0x05 0x05 or more LED control led_control Uses LED table in area other than that protected by TM Less than 0x05 0x05 or more Turn off LED R_TM_LedOff Note The 2nd user uses function tables to call API functions in the area protected by TM Figure 6 7 Main Processing Routine RO1AN2618EJ0101 Rev 1 01 Page 30 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 2 LED Control Figure 6 8 is a flowchart of the LED control processing led trol Arguments const uint8_t table LED table const uint8_t pattern_num Number of LED patterns Display LED pattern R_TM_SetLedPattern Increment LED table address LED display wait time Number of LED patterns Less than pattern_num pattern_num or more return Note The 2nd user uses function tables to call API functions in the area protected by TM Figure 6 8 LED Control RO1AN2618EJ0101 Rev 1 01 Page 31 of 34 Jun 18 2015 RENESAS RX64M RX71M Group2. type filter text Settings X v7 Resource a Builders z F 4 C C Build Configuration HardwareDebug Active Manage Configurations Build Variables Change Toolchain Ver E Dependency Scan Tool Settings Build Steps D gt Build Artifact Binary Parsers Q Error Parsers DEE Compiler Debug information in output load module Environment Assembler Logging 4 amp Linker Data record header None Settings Input Output file path CONFIGDIR ProjName mot Tool Chain Editor List C C General gS Optimize Project References Section Type of output file Stype via absolute Run Debug Settings User El Output no data to unfilled area Subcommand file Output ROM to RAM mapped section A A S w Standard Library Converter gt RTOS Configurator D_TM_2 R_TM_2 For detailed information about ROM options see CC RX V2 03 00 RX Family C C Compiler User s Manual RO1AN2618EJ0101 Rev 1 01 Page 11 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 2 3 Section Initialization When the INITSCT function in reset_program c a file generated automatically by e studio is called uninitialized data sections are zero initialized and initialized data sections are copied from the ROM area to the RAM area The user must declare the sections to be initialized in section initialization tables DTBL and BTBL A
3. P_TM_FUNC_02 6 4 7 Function Specifications The following tables lists the sample code function specifications R_TM_Porttinit Outline Header Declaration Description Arguments Return Value R_TM_SetLedPattern Outline Header Declaration Description Arguments Return Value R_TM_LedOff Outline Header Declaration Description Arguments Return Value tm_led_off Outline Header Declaration Description Arguments Return Value Initial port settings API function in area protected by TM r_tm_api h void R_TM_Portlnit void Performs initial LED port settings None None Display LED pattern API function in area protected by TM r_tm_api h void R_TM_SetLedPattern uint8_t pattern Outputs an LED pattern All LEDs turn on when the LED pattern is 0x00 uint8_t pattern LED pattern None Turn off all LEDs API function in area protected by TM r_tm_api h void R_TM_LedOff void Turns off all LEDs None None Turn on all LEDs internal function in TM function area r_tm_api h void tm_led_on void Turns on all LEDs None None RO1AN2618EJ0101 Rev 1 01 Jun 18 2015 Page 23 of 34 RENESAS RX64M RX71M Group Using the Trusted Memory Function 6 4 8 Flowcharts 1 Initial Port Settings API Function in Area Protected by TM Figure 6 3 is a flowchart of the initial port settings R_TM_Portinit Set port output data PORTO PODR register B3 bit lt 1
4. ENESAS APPLICATION NOTE RX64M RX71M Group RO1AN2618EJ0101 Rev 1 01 Using the Trusted Memory Function Jun 18 2015 Introduction This application note explains how to use the trusted memory function of RX64M and RX71M Group microcontrollers The trusted memory TM function prevents unauthorized reading of programs stored in blocks 8 and 9 of the code flash memory or programming of additional data to those blocks Target Devices RX64M Group e RX64M Group 177 and 176 pin versions ROM capacity 2 MB to 4 MB e RX64M Group 145 and 144 pin versions ROM capacity 2 MB to 4 MB e RX64M Group 100 pin version ROM capacity 2 MB to 4 MB RX71M Group e RX71M Group 177 and 176 pin versions ROM capacity 2 MB to 4 MB e RX71M Group 145 and 144 pin versions ROM capacity 2 MB to 4 MB e RX71M Group 100 pin version ROM capacity 2 MB to 4 MB When using this application note with other Renesas MCUs careful evaluation is recommended after making modifications to comply with the alternate MCU Contents Ta Specifications scnis aE dias cue tabi EEE E EE AE aa ENEE A AANE EE 2 2 Operation Confirmation Conditions cccccccececcsececeeeeeeececcaeceeeeeeeeeneaeaeeeeeeesesecceaeeeeesesesecnieaeeeeeess 3 3 Reference Application Note c ccccceccceeeeseeeeceeeeeeeeeeeaeaeceeeeecaseaaeaeeeeeeesedeneaeeeeeeesueeeaaeeeeeneeseeee 3 4 TM Function Operation Example ccccccccccceceeeceneeceeeeeeeeeceeaeceeeeeees
5. R B_TM_1 R_TM_1 B_TM_2 R_TM_2 B_TM R_TM PResetPRG ea C2 Override Linker Script Brow se Import Export Re Apply RO1AN2618EJ0101 Rev 1 01 Page 9 of 34 Jun 18 2015 RENESAS RX64M RX71M Group The procedure for setting the code expansion format for switch statements is described below Pop NS Using the Trusted Memory Function In e studio right click the target project and select Properties Under C C Build select Settings Switch to the Tool Settings tab and select Advanced under Optimize In the Switch statement list box select if then Click the Apply button type filter text Resource Builders 4 C C Build Build Variables Change Toolchain Ver Dependency Scan Device Environment Logging Settings Tool Chain Editor gt C C General Project References Run Debug Settings Settings Configuration HardwareDebug Active Tool Settings Build Steps l T Build Artifact Binary Parsers Error Parsers 4 Compiler Object List Optimize Advanced Miscellaneous User gt 8 cpu PIC PID Assembler Linker Standard Library Converter RTOS Configurator Optimization for access to external variables Switch statement Division by constant Library function Schedule instructions Divide the optimization range Use floating po
6. LEDO Off B5 bit 1 LED1 Off PORT2 PODR register B6 bit lt 1 LED2 Off B7 bit 1 LED3 Off PORTO PDR register Set port direction B3 bit 1 LEDO Used as output port B5 bit 1 LED1 Used as output port PORT2 PDR register B6 bit lt 1 LED2 Used as output port B7 bit 1 LED3 Used as output port PORTO PMR register Set port mode B3 bit lt 0 LEDO Used as general purpose I O port B5 bit lt 0 LED1 Used as general purpose I O port PORT2 PMR register B6 bit 0 LED2 Used as general purpose I O port B7 bit 0 LED3 Used as general purpose I O port return Figure 6 3 Initial Port Settings RO1AN2618EJ0101 Rev 1 01 Page 24 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 2 Display LED Pattern API Function in Area Protected by TM Figure 6 4 is a flowchart of the processing to display LED patterns R_TM_SetLedPattern What is the LED pattern Other than 0x00 Is value of bit 0 N of LED pattern 1 LEDO on Is value of bit 1 N of LED pattern 1 LED1 on Is value of bit 2 N of LED pattern 1 LED2 on Is value of bit 3 N of LED pattern 1 LED3 on Argument uint8_t pattern LED pattern LEDO off Turn on all LEDs tm_led_on LED1 off LED2 off LEDS off return Figure 6 4 Display LED Pattern RO1AN2618EJ0101 Rev 1 01 Page 25 of 34 Jun 18 2015 RENESAS RX6
7. e studio Renesas Starter Kit for RX71M or Renesas Flash Programmer RX71M Group LEDO output LED1 output LED2 output LED3 output Figure 5 1 Connection Diagram RO1AN2618EJ0101 Rev 1 01 Page 17 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 6 Software 6 1 Operation Overview Operation when rx71m tm userl mot and rx71m_tm_user2 mot have been written to the target device is described below After initial settings are made by the main function the LEDs turn on in predetermined patterns The tables below show the LED patterns associated with the area protected by TM and with the areas not protected by TM Figure 6 1 shows the LED tables After the display of the patterns all the LEDs turn off Area Protected by TM LED Table Area Not Protected by TM LED Table Programmed Programmed Value Bit3 Bit2 Bit1 BitO Value Bit3 Bit2 Bit1 BitO Pattern 1 Pattern 2 l Pattern 3 Pattern 4 Figure 6 1 LED Table 6 1 1 Data Access The LED patterns in the table for the area protected by TM differ when the TM function is enabled and when it is disabled When the TM function is enabled performing data access to the area protected by TM results in all zeros being read rather than the programmed value The program associated with this application note turns all LEDs on when the pattern value 0x00 is read Figure 6 2 shows the different LED patterns when the TM fu
8. in accord with the directions given under Handling of Unused Pins in the manual The input pins of CMOS products are generally in the high impedance state In operation with an unused pin in the open circuit state extra electromagnetic noise is induced in the vicinity of LSI an associated shoot through current flows internally and malfunctions occur due to the false recognition of the pin state as an input signal become possible Unused pins should be handled as described under Handling of Unused Pins in the manual Processing at Power on The state of the product is undefined at the moment when power is supplied The states of internal circuits in the LSI are indeterminate and the states of register settings and pins are undefined at the moment when power is supplied In a finished product where the reset signal is applied to the external reset pin the states of pins are not guaranteed from the moment when power is supplied until the reset process is completed In a similar way the states of pins in a product that is reset by an on chip power on reset function are not guaranteed from the moment when power is supplied until the power reaches the level at which resetting has been specified Prohibition of Access to Reserved Addresses Access to reserved addresses is prohibited The reserved addresses are provided for the possible future expansion of functions Do not access these addresses the correct operation of LSI is not gua
9. 0101 Rev 1 01 Jun 18 2015 Initial settings of nonexistent ports r_init_non_existent_port h void R_INIT_NonExistentPort void Makes initial settings to port direction registers corresponding to pins of ports that do not exist None None The settings in the sample code are for 176 pin microcontrollers PIN_SIZE 176 After calling this function when writing in byte units to PDR or PODR registers containing nonexistent ports set the direction control bits and port output data storage bits corresponding to the nonexistent ports to 1 and 0 respectively For detailed information about this function see the application note RX71M Group Initial Settings Example Rev 1 00 Initial clock settings r_init_clock h void R_INIT_Clock void Makes initial clock settings None None In the sample code PLL is set as the system clock and no subclock is used For detailed information about this function see the application note RX71M Group Initial Settings Example Rev 1 00 LED control API function in area protected by TM None static void tm_control const uint8_t table const uint8_t pattern_num Outputs LED patterns from the LED table in sequence const uint8_t table LED table const uint8_t pattern_num Number of LED patterns None Page 29 of 34 RENESAS RX64M RX71M Group Using the Trusted Memory Function 6 5 6 Flowcharts 1 Main Processing Routine Figure 6 7 is a flowchart of the main processing routine
10. 1 Uninitialized data area R_1 Initialized data area RAM B 2 R2 B R B_TM_1 0007 F000 Addition Addition Used by area protected by TM R_TM_1 Addition Addition e Uninitialized data area B_TM_2 Addition Addition e initialized data area RAM R_TM_2 Addition Addition B_TM Addition Addition R_TM Addition Addition PResetPRG FFCO 0000 Power on reset PC C1 Constant area C_2 C ER C D_1 Addition Addition Initialized data area ROM D_2 Addition Addition Changed from default D gt D D Change Change w Switch statement branching table area L Literal area PIntPRG Interrupt vector table P Program area C_TM_1 FFFD F000 Addition Addition Used by area protected by TM C_TM 2 Addition Addition e Constant area C_TM Addition Addition D_TM_1 Addition Addition Used by area protected by TM D_TM_2 Addition Addition e initialized data area ROM D_TM Addition Addition P_TM_FUNC_01 FFFE 0000 Addition Addition API function 01 in area protected by TM P_TM_FUNC_02 FFFE 0100 Addition Addition API function 02 in area protected by TM P_TM_FUNC_03 FFFE 0200 Addition Addition API function 03 in area protected by TM P_TM FFFE 0300 Addition Not needed Internal function in area protected by TM C_TM_TEST Note 1 FFFE 0400 Addition Addition Area protected by TM constant area EXCEPTVECT FFFF FF80 Exception vect
11. 4M RX71M Group Using the Trusted Memory Function 3 Turn Off All LEDs API Function in Area Protected by TM Figure 6 5 is a flowchart of the processing to turn off all LEDs R_TM_LedOff Turn off all LEDs Figure 6 5 Turn Off All LEDs 4 Turn On All LEDs Internal Function in TM Function Area Figure 6 6 is a flowchart of the processing to turn on all LEDs tm_led_on Turn on all LEDs Figure 6 6 Turn On All LEDs RO1AN2618EJ0101 Rev 1 01 Page 26 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 6 5 2nd User 6 5 1 File Composition Tables 6 10 and 6 11 list the files used in the sample code Files generated by the integrated development environment are not included in this table Table 6 10 Files Used in the Sample Code c File and h File File Name Outline Remarks main c Main processing routine r_init_stop_module c Stop peripheral functions still running after reset r_init_stop_module h Header file of r_init_stop_module c r_init_non_existent_port c Initial settings of nonexistent ports r_init_non_existent_port h Header file of r_init_non_existent_port c r_init_clock c Initial clock settings r_init_clock h Header file of r_init_clock c Table 6 11 Files Used in the Sample Code use File File Name Outline Remarks rx71m_tm_user1_lib lib Library file provided by 1st user 6 5 2 Option Setting Memory Table 6 12 lists the option setting m
12. EJ0101 Rev 1 01 Page 4 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function Section SU PResetPRG C C_1 C_2 C D D_1 D_2 Ww P_TM_FUNC_01 P_TM_FUNC_02 P_TM_FUNC_03 P_TM EXCEPTVECT RESETVECT Note Address 1st user s address space 0000 0000h 2nd user s address space 0007 FOOOh Provision of lib file 0008 0000h FFCO 0000h ROM blocks 133 to 10 FFFD 8000h Provision of lib file FFFE 0000h Area protected by TM blocks 9 and 8 FFFE 0100h FFFE 0200h FFFE 0300h FFFF 0000h FFFF FF80h FFFF FFFCh FFFF FFFFh The code flash memory capacity of the device used in this application note is 4 MB Note that the actual code flash memory capacity differs depending on the product version Figure 4 2 Block Diagram RO1AN2618EJ0101 Rev 1 01 Jun 18 2015 Page 5 of 34 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 1 Creating a New Project in RFP Renesas Flash Programmer RFP is a software application for programming flash memory In this application note it is used to write a program to the area protected by TM and to enable and disable the TM function The procedure for creating a new project in RFP is as follows Launch RFP In the Welcome dialog box select Create new workspace and Basic mode In the Using Target Microcontroller list box select RX as the group Enter appropriate values for Workspace
13. Name Project Name and Folder then click the Next button Select E1 in the Tool list box then click the Next button Check the box next to Power target from the emulator select 3 3 V then click the Next button Next to Pin Outputs check the boxes for io3 and io2 to specify the mode pins at connection then click the OK button 8 Select the emulator then click the OK button 9 Select Little Endian as the endian mode 10 Enter settings in the Clock supply area then click the OK button 11 Select 2000000 bps in the Communication Speed Recommended list box 12 Click the Finish button Sa Soe eh eS RFP is available on the Renesas Electronics website For detailed information on RFP refer to Renesas Flash Programmer Flash memory programming software User s Manual Common and Renesas Flash Programmer Flash memory programming software User s Manual RH850 RX700 Include RX64x RO1AN2618EJ0101 Rev 1 01 Page 6 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 2 Creating a New Project in e studio Both the 1st user and the 2nd user use e studio to make section settings specify ROM options and initialize sections 4 2 1 Section Settings In order to clarify the areas of memory used for development by the 1st user and 2nd user separate sections should be specified for use by the 1st user s program in the area protected by TM and for application development by the 2nd user
14. Note that sections L and W are not used because they are pragma sections that cannot be renamed If switch statements are used it is necessary to not specify table format allocation to switch branching table area but rather if_then format allocation to program area This setting causes switch statements to be allocated to the program area and written to the device The switch statement code expansion setting is made by the Ist user only The 1st user should provide the 2nd user with information on the sections used The 2nd user should then make settings for the sections used by the 1st user based on the information provided It is important that the addresses be accurate when making section settings It is also important that the sections used by the 2nd user be specified such that they do not overlap the areas used by the Ist user For the section configuration used in this application note see 6 3 Section Configuration Figure 4 3 is a section diagram RO1AN2618EJ0101 Rev 1 01 Page 7 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function Area not usable for development 1st user s address space 2nd user s address space 2 Provision of lib file PResetPRG C C 1 C 2 ROM blocks 133 to 10 Provision of lib file P_TM_ a P_TM_FUNC_02 Area protected by TM P_TM_FUNC_03 blocks 9 and 8 P_TM Programmed by RFP ROM blocks 7 to 0 Exception vector table EXCEPTVECT BES T
15. REP is described below Launch RFP From the RFP Microcontroller menu select All Erase Click the Start button From the RFP Microcontroller menu select Program Click Browse next to User Data area and select the previously created mot files Click the Start button Or oe PN a For details on enabling the TM function see How to Enable the TM Function in the Flash Memory section in RX64M Group User s Manual Hardware or RX71M Group User s Manual Hardware For detailed information on RFP refer to Renesas Flash Programmer Flash memory programming software User s Manual Common and Renesas Flash Programmer Flash memory programming software User s Manual RH850 RX700 Include RX64x Notes 1 It is also possible to enable the TM function after writing a program to the area protected by TM To accomplish this create a mot file containing the TMEF register code only and proceed from step 4 to write it to the microcontroller 2 Itis also possible to enable the TM function internally by means of self programming 3 It is not possible to enable the TM function by using the e studio environment download RFP must be used to write to the microcontroller RO1AN2618EJ0101 Rev 1 01 Page 14 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 3 4 Disabling the TM Function The TM function can be disabled by first erasing the data flash memory user boot area and the areas other tha
16. Using the Trusted Memory Function 7 Cautions 7 1 Initial Settings Example The sample code referenced in this application note includes partial modifications to the sample code provided in the application note RX71M Group Initial Settings Example When upgrading to the latest version of the initial settings sample code make sure to make the modifications listed below Table 7 1 lists the modifications to the initial settings sample code Table 7 1 Initial Settings Constants r_init_clock h Modified in Sample Code Constant Name Value Before Change Value After Change Description REG_SCKCR 20C2 1222h 21C2 1222h Internal clock division ratio PLL selected PLL selected SCKCR register setting value Before change ICLK 240 MHz After change ICLK 120 MHz REG_MEMWAIT MEMWAIT_1WAIT MEMWAIT_OWAIT Memory wait cycles Before change 1 wait cycle After change 0 wait cycles 7 2 Other The 1st user can also provide the 2nd user with a section information file esi containing section information To do this the 1st user should export a section information file esi from e studio The procedure for creating a section information file esi is described below 1 In e studio right click the target project and select Properties 2 Under C C Build select Settings Switch to the Tool Settings tab and select Section under Linker 3 Click Export 4 Select a destination to save the file The 2nd user can then use e studio to i
17. VEC Reset vector Note Switch statements are expanded in if_then format so they are allocated to sections in the area protected by TM API function section P_TM_FUNC_ xx and internal function section P_TM Figure 4 3 Section Diagram RO1AN2618EJ0101 Rev 1 01 Page 8 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function The procedure for making section settings is described below 1 Ine studio right click the target project and select Properties 2 Under C C Build select Settings Switch to the Tool Settings tab and select Section under Linker 3 Enter settings for each section 4 Click the Apply button type filter text gt Resource Builders 4 C C Build Build Variables Change Toolchain Ver Dependency Scan Device Environment Logging Settings Tool Chain Editor gt C C General Project References Run Debug Settings Settings Configuration HardwareDebug Active Tool Settings Build Steps Build Artifact Binary Parsers Error Parsers gt Compiler gt amp Assembler 4 Linker gt Input List gt Optimize Section User Subcommand file gt Output gt amp Standard Library gt amp Converter gt amp RTOS Configurator Sections viewer Address 0x00000004 0x0007F000 OxFFCOO000 Section Name SU SI B_1 R1 B_2 R_2 B
18. application examples You are fully responsible for the incorporation of these circuits software and information in the design of your equipment Renesas Electronics assumes no responsibility for any losses incurred by you or third parties arising from the use of these circuits software or information 2 Renesas Electronics has used reasonable care in preparing the information included in this document but Renesas Electronics does not warrant that such information is error free Renesas Electronics assumes no liability whatsoever for any damages incurred by you resulting from errors in or omissions from the information included herein 3 Renesas Electronics does not assume any liability for infringement of patents copyrights or other intellectual property rights of third parties by or arising from the use of Renesas Electronics products or technical information described in this document No license express implied or otherwise is granted hereby under any patents copyrights or other intellectual property rights of Renesas Electronics or others 4 You should not alter modify copy or otherwise misappropriate any Renesas Electronics product whether in whole or in part Renesas Electronics assumes no responsibility for any losses incurred by you or third parties arising from such alteration modification copy or otherwise misappropriation of Renesas Electronics product 5 Renesas Electronics products are classified according to the following two
19. dd the lines indicated below to the section initialization tables in the file dbsct c which is generated automatically by e studio pragma section C C DSEC extern const struct _UBYTE rom_s Start address of the initialized data section in ROM _UBYTE rom_e End address of the initialized data section in ROM _UBYTE ram_s Start address of the initialized data section in RAM _DTBL __sectop D __secend D __sectop R __sectop D_2 __secend D_2 Sectop R_ 2 5 sectop D 1 secend D 1 sectop R 1 P __sectop D_TM t t __secend D_TM _ sectop R_TM __sectop D_TM_2 __secend D_TM_2 __sectop R_TM_2 __secend D_TM_1 __sectop R_TM_1 be N js _ sectop D_TM_ pragma section C C BSEC extern const struct _UBYTE b_s Start address of non initialized data section _UBYTE b_e End address of non initialized data section _BTBL _sectop B __secend B __sectop B_ 2 __secend B_2 sectop B 1 secend B 1 P __sectop B_TM __secend B_TM __sectop B_TM_ __sectop B_TM_ gt __secend B_TM_2 __secend B_TM_1 2 2 1 pragma section CTBL prevents excessive output of L11090 messages when linking Even if CTBL is deleted the operation of the program does not change _UBYTE const _CTBL __sectop C_1 __sectop C_2 _ s
20. eceaaeceeeeeeeseceeceeeeeeeeeseesnanees 4 De WHAROWANC E E da packs E E E E 17 O SOMWare eiciia irr EE EREE EOE EE a ee eee 18 e T E O A E E E E E E E E E E ee 32 8 Sample Code mererien aa a iaaa a i a e aaa 33 9 Rereronce Docume S sorrssoniriri s ninn AEREA AA AE EAA 33 R01AN2618EJ0101 Rev 1 01 Page 1 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 1 Specifications The description in this application note assumes a 1st user who enables the TM function and a 2nd user who uses the device with the TM function enabled The 1st user writes a program to the area protected by TM and then the 2nd user executes writes to areas other than the area protected by TM Renesas Flash Programmer RFP a tool for programming flash memory is used to write program data and to enable or disable the TM function Running the sample code executes processing that turns LEDs on and off Table 1 1 lists the peripheral functions used and their applications and figure 1 1 is an overview diagram Table 1 1 Peripheral Functions Used and Their Applications Peripheral Function Trusted memory function Application Prevents unauthorized reading of programs stored in blocks 8 and 9 of the code flash memory or programming of additional data to those blocks 1st user e Writes a program encryption algorithm processing software equipment control processing software processing software based on priv
21. ectop C __sectop W_1 _ sectop W_2 _ sectop W __sectop L _ sectop SU a aaa Mani Ji A a pen For detailed information about section initialization see CC RX V2 03 00 RX Family C C Compiler User s Manual RO1AN2618EJ0101 Rev 1 01 Page 12 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 3 Development Procedure for 1st User 4 3 1 Application Development Generally speaking symbols are used to call functions but the 2nd user cannot use this method to access functions in the area protected by TM because the 2nd user is not provided with symbol information for these functions In order to access functions in the area protected by TM the 2nd user requires address information for these functions The 1st user must therefore prepare function tables containing function address information for the area protected by TM The function tables are allocated to the constant area so they are provided to the 2nd user in the library file lib This enables the 2nd user to call functions located in the area protected by TM by utilizing the function tables API functions in the area protected by TM are assigned sections and addresses individually The first user should store the section start address of each API function in the function table Information other than variables and function tables is omitted when the library file is created so it is not possible to use function symbols in fu
22. emory configured in the sample code When necessary set a value suited to the user system Table 6 12 Option Setting Memory Configured in the Sample Code Symbol Address Setting Value Description OFS1 0012 006Fh to 0012 006Ch FFFF FFFFh Voltage monitor 0 reset disabled after a reset HOCO oscillation disabled after a reset OFSO 0012 OO6Bh to 0012 0068h FFFF FFFFh IWDT stopped after a reset WDT stopped after a reset MDE 0012 0067h to 0012 0064h FFFF FFFFh Little endian TMINF 1 2 0012 0063h to 0012 0060h FFFF FFFFh TM identification data TMEF 1 2 0012 004Bh to 0012 0048h FFFF FFFFh FFFF FFFFh TM function disabled F8FF FFFFh TM function enabled Notes 1 When the TM function is enabled values set by the 1st user are stored 2 See 4 3 3 Enabling the TM Function and 4 3 4 Disabling the TM Function for information on making settings to the TMEF and TMINF registers RO1AN2618EJ0101 Rev 1 01 Page 27 of 34 Jun 18 2015 RENESAS RX64M RX71M Group 6 5 3 Using the Trusted Memory Function Constants Table 6 13 lists the constants used in the sample code Table 6 13 Constants Used in the Sample Code Constant Name Setting Value Description R_TM_PORT_INIT 0 Function table 1 element R_TM_LED_ OFF 1 Function table 1 element R_TM_SET_LED_ PATTERN 0 Function table 2 element 6 5 4 Functions Table 6 14 lists the functions used in the sample code Table 6 14 Functions Used in the Sample Code Function main O
23. eset HOCO oscillation disabled after a reset OFSO 0012 O06Bh to 0012 0068h FFFF FFFFh IWDT stopped after a reset WDT stopped after a reset MDE 0012 0067h to 0012 0064h FFFF FFFFh Little endian TMINF 0012 0063h to 0012 0060h 544D 3031h ASCII code TM01 TMEF 1 2 0012 004Bh to 0012 0048h F8FF FFFFh FFFF FFFFh TM function disabled F8FF FFFFh TM function enabled Notes 1 See 4 3 3 Enabling the TM Function and 4 3 4 Disabling the TM Function for information on making settings to the TMEF and TMINF registers 2 It is not possible to make settings to the TMEF register by using the e studio environment download RFP must be used to make settings to the TMEF register RO1AN2618EJ0101 Rev 1 01 Page 21 of 34 Jun 18 2015 RENESAS RX64M RX71M Group 6 4 3 Constants Using the Trusted Memory Function Table 6 6 lists the constants used in the sample code Table 6 6 Constants Used in the Sample Code Constant Name Setting Value Description LED _ON 0 LED output data On LED_OFF 1 LED output data Off LEDO_REG_PODR PORTO PODR BIT B3 LEDO output data storage bit LED1_REG_PODR PORTO PODR BIT B5 LED1 output data storage bit LED2 REG_PODR PORT2 PODR BIT B6 LED2 output data storage bit LED3_REG_PODR PORT2 PODR BIT B7 LED3 output data storage bit LEDO REG_PDR PORTO PDR BIT B3 LEDO direction control bit LED1_REG_PDR PORTO PDR BIT B5 LED1 direction control bit LED2 REG_PDR PORT2 PDR BIT B6 LED2 direction contr
24. h respect to the maximum rating operating supply voltage range movement power voltage range heat radiation characteristics installation and other product characteristics Renesas Electronics shall have no liability for malfunctions or damages arising out of the use of Renesas Electronics products beyond such specified ranges 7 Although Renesas Electronics endeavors to improve the quality and reliability of its products semiconductor products have specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions Further Renesas Electronics products are not subject to radiation resistance design Please be sure to implement safety measures to guard them against the possibility of physical injury and injury or damage caused by fire in the event of the failure of a Renesas Electronics product such as safety design for hardware and software including but not limited to redundancy fire control and malfunction prevention appropriate treatment for aging degradation or any other appropriate measures Because the evaluation of microcomputer software alone is very difficult please evaluate the safety of the final products or systems manufactured by you 8 Please contact a Renesas Electronics sales office for details as to environmental matters such as the environmental compatibility of each Renesas Electronics product Please use Renesas Electronics products in compliance with all applicable laws and regu
25. ileged knowhow commercial middleware etc to the TM protected area e Enables the TM function TM function enabled e Reads disabled e Additional programming disabled 2nd user e Writes programs to areas other than the area protected by TM Provision of device e Embeds the device in a product RX64M 71M Areas other than that protected by TM not programmed protected by TM 2nd user programs areas other than that Release of product with embedded device RX64M 71M End user Figure 1 1 Overview Diagram RO1AN2618EJ0101 Rev 1 01 Jun 18 2015 RENESAS Page 2 of 34 RX64M RX71M Group Using the Trusted Memory Function 2 Operation Confirmation Conditions The sample code accompanying this application note has been run and confirmed under the conditions below Table 2 1 Operation Confirmation Conditions Item Contents MCU used R5F571MLCDFC RX71M Group RAM capacity 512 Kbytes Code flash memory capacity 4 MB Operating frequency Main clock 24 MHz PLL 240 MHz main clock divided by 1 and multiplied by 10 System clock ICLK 120 MHz PLL divided by 2 Peripheral module clock A PCLKA 120 MHz PLL divided by 2 Peripheral module clock B PCLKB 60 MHz PLL divided by 4 Flash interface clock FCLK 60 MHz PLL divided by 4 Operating voltage 3 3 V Integrated development Renesas Electronics environment e studio Version 4 0 0 26 C compile
26. int arithmetic instructions Loop expansion sion maximu r be Performs inline expansion automatically Maximum increasing rate of function size Performs the constant propagation of const qualified external variables Miscellaneous E Treat global variables as volatile qualified 100 Depends on the optimization level options Performs optimization considering the type of the data indicated by the pointer RO1AN2618EJ0101 Rev 1 01 Jun 18 2015 RENESAS Page 10 of 34 RX64M RX71M Group Using the Trusted Memory Function 4 2 2 ROM Option Settings ROM options are used to secure areas in ROM and RAM for the initialized data area and to relocate symbols defined in ROM sections to addresses in RAM sections ROM option settings are specified by default for sections D and R only When creating a new project it is necessary to enter ROM option settings for the initialized data areas D_TM and R_TM used by the Ist user The procedure for setting ROM options is described below 1 Ine studio right click the target project and select Properties 2 Under C C Build select Settings Switch to the Tool Settings tab and select Output under Linker 3 Add the sections to be mapped from ROM to RAM In this application note the additions are D TM R_TM D_ TM_1 R_TM _1 andD TM 2 R_TM 2 4 Click the Apply button
27. lations that regulate the inclusion or use of controlled substances including without limitation the EU RoHS Directive Renesas Electronics assumes no liability for damages or losses occurring as a result of your noncompliance with applicable laws and regulations 9 Renesas Electronics products and technology may not be used for or incorporated into any products or systems whose manufacture use or sale is prohibited under any applicable domestic or foreign laws or regulations You should not use Renesas Electronics products or technology described in this document for any purpose relating to military applications or use by the military including but not limited to the development of weapons of mass destruction When exporting the Renesas Electronics products or technology described in this document you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations 10 Itis the responsibility of the buyer or distributor of Renesas Electronics products who distributes disposes of or otherwise places the product with a third party to notify such third party in advance of the contents and conditions set forth in this document Renesas Electronics assumes no responsibility for any losses incurred by you or third parties as a result of unauthorized use of Renesas Electronics products 11 This document may not be reproduced or duplicated in any form in whole or in part without prior wri
28. les Change Toolchain Ver Saa Tool Settings Build Steps Build Artifact h Binary Parsers Error Parsers Device gt I Compiler Relocatable files object files and library files AA Environment Assembler i Logging 4 amp Linker Settings Input Tool Chain Editor List C C General Optimize Project References Section Run Debug Settings User l Subcommand file Output amp Standard Library Converter RTOS Configurator The 2nd user should use the function tables in the provided library file lib to call API functions in the area protected by TM An example of calling API functions using function tables is shown below Initialize LED ports tm_func_table1 R_TM_PORT_INIT LEDs ON tm_func_table2 R_TM_SET_LED table LEDs OFF tm_func_table1 R_TM_LED OFF Note The 2nd user must not allocate programs to the area protected by TM when developing applications This will result in errors during programming because the TM function is enabled RO1AN2618EJ0101 Rev 1 01 Page 16 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 4 2 Debugging an Application after Development The e studio integrated development environment can be used to download programs to areas other than that protected by TM for application debugging The e studio integrated develo
29. mport the section information file esi The procedure for importing a section information file esi is described below 1 Ine studio right click the target project and select Properties 2 Under C C Build select Settings Switch to the Tool Settings tab and select Section under Linker 3 Click Import 4 Open the provided section information file esi Note Care should be exercised because importing a section information file esi causes all existing section settings to be erased and overwritten with the new ones RO1AN2618EJ0101 Rev 1 01 Page 32 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 8 Sample Code Sample code can be downloaded from the Renesas Electronics website 9 Reference Documents User s Manual Hardware RX64M Group User s Manual Hardware RO1UH0377EJ RX71M Group User s Manual Hardware RO1UH0493EJ The latest version can be downloaded from the Renesas Electronics website User s Manual Flash Memory RX64M Group RX71M Group Flash Memory User s Manual Hardware Interface RO1UH0435EJ The latest version can be downloaded from the Renesas Electronics website User s Manual Renesas Flash Programmer Renesas Flash Programmer V2 05 Flash memory programming software User s Manual Common R20UT2906EJ Renesas Flash Programmer V2 05 Flash memory programming software User s Manual RH850 RX700 Include RX64M R20UT2909EJ The latest versio
30. n can be downloaded from the Renesas Electronics website Technical Update Technical News The latest information can be downloaded from the Renesas Electronics website User s Manual Development Tools CC RX V2 03 00 RX Family C C Compiler User s Manual R20UT3248EJ The latest version can be downloaded from the Renesas Electronics website RO1AN2618EJ0101 Rev 1 01 Page 33 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Website and Support Renesas Electronics Website http www renesas com Inquiries http www renesas com contact Using the Trusted Memory Function All trademarks and registered trademarks are the property of their respective owners RO1AN2618EJ0101 Rev 1 01 Jun 18 2015 RENESAS Page 34 of 34 Revision History Description Rev Date Page Summary 1 00 Apr 01 2015 First edition issued 1 01 Jun 18 2015 3 Integrated development environment changed in table 2 1 Operation Confirmation Conditions 17 4 4 2 Debugging an Application after Development changed Information on debugging removed from 7 2 General Precautions in the Handling of MPU MCU Products The following usage notes are applicable to all MPU MCU products from Renesas For detailed usage notes on the products covered by this document refer to the relevant sections of the document as well as any technical updates that have been issued for the products 1 Handling of Unused Pins Handle unused pins
31. n that protected by TM blocks 8 and 9 and then issuing the clear configuration command When the clear configuration command is issued the configuration settings area including the TMEF and TMINF registers and the code flash memory which is the area protected by TM are erased The procedure for disabling the TM function is described below Launch RFP From the RFP Microcontroller menu select Set Project Select the Other Settings tab Under Command Options set Clear Configuration After All Erase to True Click the OK button From the Microcontroller menu select All Erase Click the Start button RO1AN2618EJ0101 Rev 1 01 Page 15 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 4 Development Procedure for 2nd User 4 4 1 Application Development Using the provided library file lib containing variables and function tables the 2nd user can develop an application The procedure for linking the library file lib is described below In e studio right click the target project and select Properties Under C C Build select Settings Switch to the Tool Settings tab and select Input under Linker 1 2 3 Add the provided lib file 4 Click the Apply button e Properties for rx7i1m_tm_user2 type filter text Settings z Sga Resource a Builders i z 4 C C Build Configuration HardwareDebug Active Manage Configurations Build Variab
32. nction is enabled and when it is disabled Area Protected 1 TM LED Table TM Function Disabled TM Function Enabled Programmed Read Read Value Value Bit3 Bit2 Bit1 BitO Value Value Bit3 Bit2 Bit Bito O LED on LED off Figure 6 2 Difference in LED Patterns when TM Function Is Enabled and Disabled RO1AN2618EJ0101 Rev 1 01 Page 18 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 6 2 Sample Code Configuration Table 6 1 lists the sample code supplied with this application note Table 6 1 Sample Code Supplied with Application Note File Name Outline Remarks rx71m_tm_user1 Project developed by 1st user rx71m_tm_user1_lib lib file generation project provided to 2nd user rx71m_tm_user2 Project developed by 2nd user 6 3 Section Configuration Table 6 2 lists section information for the sample code For information on how to add modify or erase sections see the latest version of the RX Family C C Compiler User s Manual RO1AN2618EJ0101 Rev 1 01 Page 19 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Table 6 2 Sample Code Section Information Using the Trusted Memory Function Section Name Address 1st User 2nd User Description SU 0000 0004 User stack area SI Interrupt stack area B
33. nction tables An example of a function table is shown below void const tm_func_table1 void R_tm_func_ 1 void __sectop P_TM_FUNC_ 1 R_tm_func_ 2 void __sectop P_TM_FUNC_ 2 2 When the TM function is enabled performing data access to the area protected by TM causes zeros to be read so only section P should be allocated to the area protected by TM All areas to which data access will be performed section C etc should be assigned to areas other than the area protected by TM This application note includes confirmation of data access operation when accessing the area protected by TM while the TM function is enabled For information on data access operation when the TM function is enabled see 6 1 1 Data Access 4 3 2 Creating a Library File Containing Variables and Function Tables To access functions in the area protected by TM the 2nd user requires address information for these functions The 1st user must therefore prepare and supply to the 2nd user a library file lib containing variables and function tables for the area protected by TM The library file is created with the sample code rx71m_tm_user1_lib by building the file tm_api c with information other than global variables const variables and function tables for the area protected by TM removed The procedure for creating a new library file project is described below 1 From the e studio File menu select Ne
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35. ol bit LED3_REG_PDR PORT2 PDR BIT B7 LED3 direction control bit LEDO REG_PMR PORTO PMR BIT B3 LEDO pin mode control bit LED1_ REG_PMR PORTO PMR BIT B5 LED1 pin mode control bit LED2 REG_PMR PORT2 PMR BIT B6 LED2 pin mode control bit LED3_REG_PMR PORT2 PMR BIT B7 LED3 pin mode control bit 6 4 4 Variables Table 6 7 lists the const variables Table 6 7 const Variables Type Variable Name Description Function Used const uint8_t g_test_tm_led_table LED table of area protected by TM main const uint8_t g_tm_led_table LED table of area not protected by TM main const uint8_t g_led_pattern_num Number of LED patterns main 6 4 5 Functions Table 6 8 lists the functions used in the sample code Table 6 8 Functions Used in the Sample Code Function Outline R_TM_PortInit Initial port settings API function in area protected by TM R_TM_SetLedPattern Display LED pattern API function in area protected by TM R_TM_LedOff Turn off all LEDs API function in area protected by TM tm_led_on Turn on all LEDs internal function in TM function area RO1AN2618EJ0101 Rev 1 01 Page 22 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 6 4 6 Function Tables Table 6 9 lists the function tables Table 6 9 Function Tables Type Function Pointer Name Argument Storage Address void tm_func_table1 void __sectop P_TM_FUNC_01 __sectop P_TM_FUNC_03 void tm_func_table2 uint8_t argument __sectop
36. or table RESETVECT FFFF FFFC Reset vector Default Note 1 Section C_TM_TEST is provided with this application note to confirm the behavior of data access operations targeting the area protected by TM when the TM function is enabled When the TM function is enabled performing data access to the area protected by TM causes zeros to be read so only section P should be allocated to the area protected by TM RO1AN2618EJ0101 Rev 1 01 Jun 18 2015 RENESAS Page 20 of 34 RX64M RX71M Group Using the Trusted Memory Function 6 4 1st User 6 4 1 File Composition Tables 6 3 and 6 4 list the files used in the sample code Files generated by the integrated development environment are not included in this table Table 6 3 Files Used in the Sample Code rx71m_tm_user1 File Name Outline Remarks r_tm_api c Program in area protected by TM r_tm_api h Header file of r_tm_api c Table 6 4 Files Used in the Sample Code rx71m_tm_user1_lib File Name Outline Remarks r_tm_api c Program in area protected by TM All information other than variables and function tables deleted 6 4 2 Option Setting Memory Table 6 5 lists the option setting memory configured in the sample code When necessary set a value suited to the user system Table 6 5 Option Setting Memory Configured in the Sample Code Symbol Address Setting Value Contents OFS1 0012 O06Fh to 0012 006Ch FFFF FFFFh Voltage monitor 0 reset disabled after a r
37. pment environment offers the options when downloading programs to overwrite without erasing or to erase and then overwrite The default setting is erase and then overwrite but when the TM function is enabled it is not possible to erase programs in the area protected by TM To erase the area protected by TM issue the clear configuration command When the clear configuration command is issued the configuration settings area including the TMEF and TMINF registers and blocks 8 and 9 of the code flash memory which is the area protected by TM are erased 4 4 3 Writing the Program to the Flash Memory Area Other Than That Protected by TM Following application development RFP is used to write the mot files to the microcontroller The procedure for writing the file is described below Launch RFP From the RFP Microcontroller menu select Erase Click the Start button Check the boxes for the blocks in areas other than that protected by TM Click the Erase button From the RFP Microcontroller menu select Program Click Browse next to User Data area and select the previously created mot files Click the Start button CO Seek S 5 Hardware 5 1 Pin Used Table 5 1 lists the pins used and their functions and figure 5 1 is a connection diagram Table 5 1 Pins Used and Their Functions Pin Name 1 0 Function P03 Output LEDO output P05 Output LED1 output P26 Output LED2 output P27 Output LED3 output
38. quality grades Standard and High Quality The recommended applications for each Renesas Electronics product depends on the product s quality grade as indicated below Standard Computers office equipment communications equipment test and measurement equipment audio and visual equipment home electronic appliances machine tools personal electronic equipment and industrial robots etc High Quality Transportation equipment automobiles trains ships etc traffic control systems anti disaster systems anti crime systems and safety equipment etc Renesas Electronics products are neither intended nor authorized for use in products or systems that may pose a direct threat to human life or bodily injury artificial life support devices or systems surgical implantations etc or may cause serious property damages nuclear reactor control systems military equipment etc You must check the quality grade of each Renesas Electronics product before using it in a particular application You may not use any Renesas Electronics product for any application for which it is not intended Renesas Electronics shall not be in any way liable for any damages or losses incurred by you or third parties arising from the use of any Renesas Electronics product for which the product is not intended by Renesas Electronics 6 You should use the Renesas Electronics products described in this document within the range specified by Renesas Electronics especially wit
39. r Renesas Electronics C C Compiler Package for RX Family V 2 03 00 Compiler options The integrated development environment default settings are used iodefine h version V1 00 Endian Little endian Operating mode Single chip mode Processor mode Supervisor mode Sample code version Version 1 00 Board used Renesas Starter Kit for RX71M product type ROK50571MSxxxBE Tools used Renesas Flash Programmer V2 05 3 Reference Application Note For additional information associated with this document refer to the following application notes e RX71M Group Initial Settings Rev 1 00 ROIAN2459EJ The initial settings function of the above application note is used in the sample code of this application note The revision number is that which was current at the time of the preparation of this application note If a newer version is available replace the version included with this application note with the newer version The latest version can be checked and downloaded from the Renesas Electronics website RO1AN2618EJ0101 Rev 1 01 Page 3 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 TM Function Operation Example The 1st user who supplies the program in the area protected by TM develops an application and creates a library file lib containing the variables and function tables used by the program in the area protected by TM After developing the application the Ist user
40. ranteed if they are accessed Clock Signals After applying a reset only release the reset line after the operating clock signal has become stable When switching the clock signal during program execution wait until the target clock signal has stabilized When the clock signal is generated with an external resonator or from an external oscillator during a reset ensure that the reset line is only released after full stabilization of the clock signal Moreover when switching to a clock signal produced with an external resonator or by an external oscillator while program execution is in progress wait until the target clock signal is stable Differences between Products Before changing from one product to another i e to a product with a different type number confirm that the change will not lead to problems The characteristics of an MPU or MCU in the same group but having a different part number may differ in terms of the internal memory capacity layout pattern and other factors which can affect the ranges of electrical characteristics such as characteristic values operating margins immunity to noise and amount of radiated noise When changing to a product with a different part number implement a system evaluation test for the given product Notice 1 Descriptions of circuits software and other related information in this document are provided only to illustrate the operation of semiconductor products and
41. tten consent of Renesas Electronics 12 Please contact a Renesas Electronics sales office if you have any questions regarding the information contained in this document or Renesas Electronics products or if you have any other inquiries Note 1 Renesas Electronics as used in this document means Renesas Electronics Corporation and also includes its majority owned subsidiaries Note 2 Renesas Electronics product s means any product developed or manufactured by or for Renesas Electronics CENESAS SALES OFFICES Renesas Electronics Corporation http www renesas com Refer to http www renesas com for the latest and detailed information Renesas Electronics America Inc 2801 Scott Boulevard Santa Clara CA 95050 2549 U S A Tel 1 408 588 6000 Fax 1 408 588 6130 Renesas Electronics Canada Limited 9251 Yonge Street Suite 8309 Richmond Hill Ontario Canada L4C 9T3 Tel 1 905 237 2004 Renesas Electronics Europe Limited Dukes Meadow Millboard Road Bourne End Buckinghamshire SL8 5FH U K Tel 44 1628 585 100 Fax 44 1628 585 900 Renesas Electronics Europe GmbH Arcadiastrasse 10 40472 D sseldorf Germany Tel 49 211 6503 0 Fax 49 211 6503 1327 Renesas Electronics China Co Ltd Room 1709 Quantum Plaza No 27 ZhiChunLu Haidian District Beijing 100191 P R China Tel 86 10 8235 1155 Fax 86 10 8235 7679 Renesas Electronics Shanghai Co Ltd Unit 301 Tower A Central Towers 555 Langa
42. uses RFP to write the program to the area protected by TM and enables the TM function The 1st user should provide the 2nd user with the specifications of the program in the area protected by TM sample code section information and the library file lib created as described above The 2nd user application developer uses the provided program specifications section information and library file lib to develop an application After developing the application the 2nd user uses e studio to debug the application and uses RFP to write the program to an area other than that protected by TM The 2nd user then embeds the device to which the program was written in the finished product and supplies it to the end user Figure 4 1 shows the development sequence and figure 4 2 is a block diagram 1st user s development sequence 2nd user s development sequence 4 3 1 Application Development 4 4 1 Application Development 4 3 2 Creating a Library File Containing Variables and Function Tables 4 4 2 Debugging an Application 4 3 3 Enabling the TM Function Writing the Program 4 4 3 Writing the Program to the Flash Memory Area Other Than That 4 3 4 Disabling the TM Protected by TM Function End provision to end user End provision to 2nd user Note To disable the TM function after it has been enabled follow the instructions in 4 3 4 Disabling the TM Function Figure 4 1 Development Sequence R01AN2618
43. utline Main processing routine R_INIT_StopModule Stop peripheral functions still running after reset R_INIT_NonExistentPort Initial settings of nonexistent ports R_INIT_Clock Initial clock settings led_control LED control 6 5 5 Function Specifications The following tables lists the sample code function specifications main Outline Header Declaration Description Arguments Return Value R_INIT_StopModule Outline Header Declaration Description Arguments Return Value Outline Main processing routine None void main void After making initial settings accesses the area protected by TM LED display processing None None Stop peripheral functions still running after reset r_init_stop_module h void R_INIT_StopModule void Makes settings to transition to the module stop state None None The sample code does not perform the transition to the module stop state For detailed information about this function see the application note RX71M Group Initial Settings Example Rev 1 00 RO1AN2618EJ0101 Rev 1 01 Jun 18 2015 Page 28 of 34 RENESAS RX64M RX71M Group Using the Trusted Memory Function R_INIT_NonExistentPort Outline Header Declaration Description Arguments Return Value Notes R_INIT_Clock Outline Header Declaration Description Arguments Return Value Notes led_control Outline Header Declaration Description Arguments Return Value RO1AN2618EJ
44. w gt C Project 2 Inthe Project type list box select Static Library Renesas gt Sample Project 3 Inthe Toolchains list box select Renesas RXC Toolchain 4 Enter a name for the project then click the Next button 5 For ISA type select RXv2 architecture 6 Click the Finish button RO1AN2618EJ0101 Rev 1 01 Page 13 of 34 Jun 18 2015 RENESAS RX64M RX71M Group Using the Trusted Memory Function 4 3 3 Enabling the TM Function RFP is used to enable the TM function Enabling of the TM and program writing to the area protected by TM take place at the same time The 1st user creates mot files from which all code except that related to the TM enable flag register TMEF register TM identification data register TMINF register and area protected by TM has been removed and writes them to the target device The TM function is enabled by setting the TMEF bits in the TMEF register to 000b The TMINF register stores the code used to identify programs in the area protected by TM To make settings to the TMEF register and TMINF register make the modifications shown below to the file vector_table c which is generated automatically by e studio pragma address __TMEFreg x 120048 TMEF register const unsigned long _ TMEFreg Oxffffffff pragma address __ TMINFreg 0x00120060 TMINF register const unsigned long _ TMINFreg Oxffffffff The procedure for writing the mot files to the target device with
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