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Hi All, This is a very desperate call for help!!! I am struggling for several month now to run my software from the flash. I am using the flash for program memory and the internal and external X RAM memory. At first I could run it from the flash but not after power down. Then, after Metrowerks support offered to copy all my initialized data from ROM to RAM I changed the LCF (see below). But then nothing worked - before or after power down. When I run it from the debugger nothing makes sense. I'm getting very close to my deadline and I am pretty desperate. Please have a look at my LCF and tell me what you thing is the problem. MY LCF ============ # Changed by Ari Tidhar - 23/10/2002 #******************************************** # Linker.cmd file for DSP56827EVM # using internal & external data memory ( EX = 0, Boot Mode 0A ) # DSP56F827 does not have a dedicated Boot Flash Section. .bBootFlash section # is part of .pFlash2. #******************************************************************** *********** MEMORY { .pInterruptVector (RX) : ORIGIN = 0x0000, LENGTH = 0x0086 .pFlash (RX) : ORIGIN = 0x0086, LENGTH = 0x7B7A .pIntRAM (RWX) : ORIGIN = 0x7C00, LENGTH = 0x0400 .pIntRAM_Mirror (RWX) : ORIGIN = 0x7C00, LENGTH = 0x0400 .pFlash2 (RX) : ORIGIN = 0x8000, LENGTH = 0x7800 .pBootFlash (RX) : ORIGIN = 0xF800, LENGTH = 0x0800 #Part of pFlash2 .xAvailable (RW) : ORIGIN = 0x0000, LENGTH = 0x0030 .xCWRegisters (RW) : ORIGIN = 0x0030, LENGTH = 0x0010 .xStack (RW) : ORIGIN = 0x0040, LENGTH = 0x0FC0 .xPeripherals (RW) : ORIGIN = 0x1000, LENGTH = 0x0400 .xReserved1 (R) : ORIGIN = 0x1400, LENGTH = 0x0C00 .xFlash (R) : ORIGIN = 0x2000, LENGTH = 0x1000 .xReserved2 (R) : ORIGIN = 0x3000, LENGTH = 0x1000 .xExtRAM (RW) : ORIGIN = 0x4000, LENGTH = 0xB200 .xExtRAM_Mirror (RW) : ORIGIN = 0x4000, LENGTH = 0xBF80 .xCoreRegisters (RW) : ORIGIN = 0xFF80, LENGTH = 0x0080 } #******************************************************************** *********** FORCE_ACTIVE {FconfigInterruptVector} SECTIONS { .ApplicationInterruptVector : { vector.c (.text) } > .pInterruptVector #******************************************************************** *********** .ApplicationCode : { # Place code into Program Flash 1 * (.text) * (rtlib.text) * (fp_engine.text) * (user.text) } > .pFlash #******************************************************************** *********** .ApplicationCode2 : { # Place code into Program Flash 2 # It is necessary to have two Program Flash sections for the 827 # since the memory map is not continuous from the first Program Flash # section to the second. # Locate C functions by referencing the filename # Example: Cfilename.c (.text) # Locate Assembly functions by referencing the section name # Example: * (section_name.text) } > .pFlash2 #******************************************************************** *********** .InitializedConstData : { const.c (.data) appconst.c (.data) } > .xFlash #******************************************************************** *********** .InitializedDataForProgramRAM : AT (ADDR(.pFlash) + 1 + SIZEOF(.pFlash) / 2) { # Define variables for C initialization code of Program RAM data F_Pdata_start_addr_in_ROM = ADDR(.pFlash) + 1 + SIZEOF(.pFlash) / 2; F_Pdata_start_addr_in_RAM = .; _P_DATA_ADDR = .; # SDK initialized data to be placed into Program RAM pramdata.c (.data) F_Pdata_ROMtoRAM_length = . - _P_DATA_ADDR; } > .pIntRAM_Mirror #******************************************************************** *********** .DataForProgramRAM : { # allocates space for .InitializedDataForPRogramRAM section . = (ADDR(.pIntRAM_Mirror) + SIZEOF(.pIntRAM_Mirror) / 2) + 1; # Define variables for C initialization code F_Pbss_start_addr = .; _P_BSS_ADDR = .; # SDK uninitialized data to be placed into Program RAM pramdata.c (.bss) F_Pbss_length = . - _P_BSS_ADDR; } > .pIntRAM #******************************************************************** *********** .ApplicationInitializedData : AT (ADDR(.pFlash) + 1 + SIZEOF (.pFlash) / 2 + SIZEOF(.pIntRAM_Mirror) / 2 + 1 ) { # Define variables for C initialization code F_Xdata_start_addr_in_ROM = ADDR(.pFlash) + 1 + SIZEOF(.pFlash) / 2 + SIZEOF(.pIntRAM_Mirror) / 2 + 1; F_StackAddr = ADDR(.xStack); F_StackEndAddr = ADDR(.xStack) + SIZEOF (.xStack) / 2 - 1; F_Xdata_start_addr_in_RAM = .; _X_DATA_ADDR = .; # Place rest of the data into External RAM * (.data) * (fp_state.data) * (rtlib.data) F_Xdata_ROMtoRAM_length = . - _X_DATA_ADDR; } > .xExtRAM_Mirror #******************************************************************** *********** .ApplicationData : { # allocates space for .ApplicationInitializedData section . = (ADDR(.xExtRAM_Mirror) + SIZEOF(.xExtRAM_Mirror) / 2); F_Xbss_start_addr = .; _X_BSS_ADDR = .; # .bss sections * (rtlib.bss.lo) * (rtlib.bss) * (.bss) F_Xbss_length = . - _X_BSS_ADDR; # Copy DATA } > .xExtRAM #******************************************************************** *********** FArchIO = ADDR(.xPeripherals); FArchCore = ADDR(.xCoreRegisters); } ============================================= Thank you in advance, Ari Tidhar |
Running from flash with DSP56F827
Started by ●February 20, 2003
