//*************************************************************************
// XLINK command file template for EWARM/ICCARM
//
// Usage:  xlink  -f lnkarm  <your_object_file(s)>
//                -s <program start label>  <C/C++ runtime library>
//
// $Revision: 1.2 $
//*************************************************************************

// The flash loader is loaded into the 2M external RAM avaiable on the
-DMEMSTART=0x00000000
-DMEMEND=0x000003FFF

//*************************************************************************
// In this file it is assumed that the system has the following
// memory layout:
//
//   Exception vectors [0x000000--0x00001F]  RAM or ROM
//   ROMSTART--ROMEND  [0x008000--0x0FFFFF]  ROM (or other non-volatile memory)
//   RAMSTART--RAMEND  [0x100000--0x7FFFFF]  RAM (or other read/write memory)
//
// -------------
// Code segments - may be placed anywhere in memory.
// -------------
//
//   INTVEC     -- Exception vector table.
//   SWITAB     -- Software interrupt vector table.
//   ICODE      -- Startup (cstartup) and exception code.
//   DIFUNCT    -- Dynamic initialization vectors used by C++.
//   CODE       -- Compiler generated code.
//   CODE_I     -- Compiler generated code declared __ramfunc (executes in RAM)
//   CODE_ID    -- Initializer for CODE_I (ROM).
//
// -------------
// Data segments - may be placed anywhere in memory.
// -------------
//
//   CSTACK     -- The stack used by C/C++ programs (system and user mode).
//   IRQ_STACK  -- The stack used by IRQ service routines.
//   SVC_STACK  -- The stack used in supervisor mode
//                 (Define other exception stacks as needed for
//                 FIQ, ABT, UND).
//   HEAP       -- The heap used by malloc and free in C and new and
//                 delete in C++.
//   INITTAB    -- Table containing addresses and sizes of segments that
//                 need to be initialized at startup (by cstartup).
//   CHECKSUM   -- The linker places checksum byte(s) in this segment,
//                 when the -J linker command line option is used.
//   DATA_y     -- Data objects.
//
// Where _y can be one of:
//
//   _AN        -- Holds uninitialized located objects, i.e. objects with
//                 an absolute location given by the @ operator or the
//                 #pragma location directive. Since these segments
//                 contain objects which already have a fixed address,
//                 they should not be mentioned in this linker command
//                 file.
//   _C         -- Constants (ROM).
//   _I         -- Initialized data (RAM).
//   _ID        -- The original content of _I (copied to _I by cstartup) (ROM).
//   _N         -- Uninitialized data (RAM).
//   _Z         -- Zero initialized data (RAM).
//
// Note:  Be sure to use end values for the defined address ranges.
//        Otherwise, the linker may allocate space outside the
//        intended memory range.
//*************************************************************************

//************************************************
// Inform the linker about the CPU family used.
//************************************************

-carm

//*************************************************************************
// Segment placement - General information
//
// All numbers in the segment placement command lines below are interpreted
// as hexadecimal unless they are immediately preceded by a '.', which
// denotes decimal notation.
//
// When specifying the segment placement using the -P instead of the -Z
// option, the linker is free to split each segment into its segment parts
// and randomly place these parts within the given ranges in order to
// achieve a more efficient memory usage. One disadvantage, however, is
// that it is not possible to find the start or end address (using
// the assembler operators .sfb./.sfe.) of a segment which has been split
// and reformed.
//
// When generating an output file which is to be used for programming
// external ROM/Flash devices, the -M linker option is very useful
// (see xlink.pdf for details).
//*************************************************************************


//*************************************************************************
// Read-only segments mapped to ROM.
//*************************************************************************

-DROMSTART=MEMSTART
-DROMEND=MEMEND

//************************************************
// 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)INTVEC=MEMSTART:+40

//************************************************
// Startup code and exception routines (ICODE).
//************************************************

-Z(CODE)ICODE,DIFUNCT=ROMSTART-ROMEND
-Z(CODE)SWITAB=ROMSTART-ROMEND

//************************************************
// Code segments may be placed anywhere.
//************************************************

-Z(CODE)CODE=ROMSTART-ROMEND

//************************************************
// Original ROM location for __ramfunc code copied
// to and executed from RAM.
//************************************************

-Z(CONST)CODE_ID=ROMSTART-ROMEND

//************************************************
// Various constants and initializers.
//************************************************

-Z(CONST)INITTAB,DATA_ID,DATA_C=ROMSTART-ROMEND
-Z(CONST)CHECKSUM=ROMSTART-ROMEND

//*************************************************************************
// Read/write segments mapped to RAM.
//*************************************************************************

-DRAMSTART=(MEMSTART+40)
-DRAMEND=MEMEND

//************************************************
// 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

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

-QCODE_I=CODE_ID

//*************************************************************************
// Stack and heap segments.
//*************************************************************************

-D_CSTACK_SIZE=500
-D_SVC_STACK_SIZE=100
-D_IRQ_STACK_SIZE=100
-D_HEAP_SIZE=500

-Z(DATA)CSTACK+_CSTACK_SIZE=RAMSTART-RAMEND
// -Z(DATA)SVC_STACK+_SVC_STACK_SIZE=RAMSTART-RAMEND
-Z(DATA)IRQ_STACK+_IRQ_STACK_SIZE,HEAP+_HEAP_SIZE=RAMSTART-RAMEND
-Z(NEAR)BUF_START=RAMSTART-RAMEND
-Z(NEAR)BUF_END=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

execUserPreload()
{
setup();
// init_PLL();
  // Test and set Remap
__writeMemory32(0xAAAAAAAA,0x00000000,"Memory");
  if(__readMemory32(0x00000000,"Memory") != 0xAAAAAAAA)
  {
    __writeMemory32(0x01,0xFFFFFF00,"Memory");    // MC_RCR: toggle remap bit
  }
// init_SDRAM ();
  __message("Target init macro complete");
}


setup()
{
  __var i,clk;


  __writeMemory32(0x1, 0xFFFFFC00, "Memory");             // PMC_SCER: PCK = 1

  __writeMemory32(0x0000FF01, 0xFFFFFC20, "Memory");      // PMC_MOR: MOSCEN = 1, enable main clock

  while(((clk = __readMemory32(0xFFFFFC24, "Memory")) & 0x00010000) == 0);  // Read PMC_MCFR to determine Fosc

  clk = (clk & 0x0000FFFF) * 32768 / 16;    // * 244 / 5;

  __writeMemory32(0x1, 0xFFFFFC30, "Memory");             // PMC_MCKR: CSS = 1, PRES = 0, MDIV = 0

}