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C/C++ Source code

//*************************************************************************
// XLINK command file for AT91SAM9261 using an external NOR flash
//
// Usage:  xlink  -f lnkarm  <your_object_file(s)>
//            	-s <program start label>  <C/C++ runtime library>
//
//*************************************************************************

//*************************************************************************
-carm

//
// These settings are used for link the application.
//
-DROMSTART=00000000
-DROMEND=00028000

//
//  Define the internal SRAM.
//
-DIRAM_START=00300000
-DIRAM_SIZE=28000
-DIRAM_END=(IRAM_START+IRAM_SIZE-1)

//
//  Define the external SDRAM.
//
-DSDRAMSTART=20000000
-DSDRAM_SIZE=4000000
-DSDRAMEND=(SDRAMSTART+SDRAM_SIZE-1)


//
//  These defines are used for copying the code from ROM to RAM.
//  We reserve 1/2 of the SRAM for this. (80kByte)
//
-DRAMCODE_START=IRAM_START
-DRAMCODE_SIZE=14000
-DRAMCODE_END=(RAMCODE_START+RAMCODE_SIZE-1)

//
// Read/Write segments are after the reserved "RAMCode segement".
// You can alternatively use the external SDRAM for this.
// This will look like this:
// -DRAMSTART=SDRAMSTART
// -DRAMEND=SDRAMEND
// 
-DRAMSTART=(RAMCODE_END+1)
-DRAMEND=IRAM_END


//*************************************************************************
// Address range for reset and exception
// vectors (INTVEC).
// The vector area is 32 bytes,
// an additional 32 bytes is allocated for the
// constant table used by ldr PC in cstartup.s79.
//*************************************************************************
-Z(CODE)PROGRAM_START=ROMSTART-ROMEND
-Z(CODE)INTVEC=ROMSTART-ROMEND

//*************************************************************************
// Startup code and exception routines (ICODE).
//*************************************************************************
-Z(CODE)ICODE,DIFUNCT=ROMSTART-ROMEND
-Z(CODE)SWITAB=ROMSTART-ROMEND

-Z(CODE)RAMCODE=RAMCODE_START-RAMCODE_END

//*************************************************************************
// Code segments may be placed anywhere.
//*************************************************************************
-Z(CODE)CODE=ROMSTART-ROMEND

//*************************************************************************
// Various constants and initializers.
//*************************************************************************
-Z(CONST)INITTAB,DATA_ID,DATA_C=ROMSTART-ROMEND
-Z(CONST)CHECKSUM=ROMSTART-ROMEND
-Z(CONST)PROGRAM_END

//*************************************************************************
// Data segments.
//*************************************************************************
-Z(DATA)DATA_I,DATA_Z,DATA_N=RAMSTART-RAMEND

//*************************************************************************
// __ramfunc code copied to and executed from RAM.
//*************************************************************************
-Z(DATA)CODE_I=RAMSTART-RAMEND
-Z(CONST)CODE_ID=ROMSTART-ROMEND
-QCODE_I=CODE_ID

//*************************************************************************
// ICCARM produces code for __ramfunc functions in
// CODE_I segments. The -Q XLINK command line
// option redirects XLINK to emit the code in the
// debug information associated with the CODE_I
// segment, where the code will execute.
//*************************************************************************

//*************************************************************************
// Stack and heap segments.
//*************************************************************************
-D_CSTACK_SIZE=(100*4)
-D_IRQ_STACK_SIZE=(8*8*4)  // 8 nesting levels, 8 registers saved, 4 bytes each

// System and IRQ stack should reside in internal RAM if possible
-Z(DATA)CSTACK+_CSTACK_SIZE=RAMSTART-RAMEND
-Z(DATA)IRQ_STACK+_IRQ_STACK_SIZE=RAMSTART-RAMEND

//*************************************************************************
// ELF/DWARF support.
//
// Uncomment the line "-Felf" below to generate ELF/DWARF output.
// Available format specifiers are:
//
//   "-yn": Suppress DWARF debug output
//   "-yp": Multiple ELF program sections
//   "-yas": Format suitable for debuggers from ARM Ltd (also sets -p flag)
//
// "-Felf" and the format specifiers can also be supplied directly as
// command line options, or selected from the Xlink Output tab in the
// IAR Embedded Workbench.
//*************************************************************************

// -Felf

C/C++ Source code

  {
#define MATRIX_MCFG (*(volatile unsigned long *)(0xFFFFEE00))

#pragma segment="RAMCODE"
#pragma segment="PROGRAM_START"
#pragma segment="PROGRAM_END"
	void * pSrc  = __sfb("RAMCODE");
	void * pDest = __sfb("PROGRAM_START"); 
	OS_U32 Size  = (int)((OS_U8 *)__sfb("PROGRAM_START") - (OS_U8 *)__sfb("PROGRAM_END"));
	
	//
	// Copy ROM to internal SRAM
	//
	memcpy(pDest, pSrc, Size);
	//
	//  Remap internal SRAM to 0
	//
	MATRIX_MCFG = 0x03;
  }