ramtms470r1a256.mac

来自「最新版IAR FOR ARM（EWARM）5.11中的代码例子」· MAC 代码 · 共 70 行

// -----------------------------------------------------------------------
// This file contains the flash set up configuration for the TMS470R1A256.
//
//
//
// Revision : 0.01 JM 9/14/05
//
//-------------------------------------------------------------------------


SetupRAM()
{
  __message "Executing memory setup macro A256 RAM \n";

  // Disable reset at illegal address and access violation to
  // avoid resetting the CPU when debugging.
  __writeMemory32(0x00004007, 0xffffffe0, "Memory"); // SYSECR


 /* activate Flash at 0x04000000 256k that is connected to memory select 0 */
  __writeMemory32(0x00000090, 0xfffffe04, "Memory"); // MFBALR0 256K
  __writeMemory32(0x00000040, 0xfffffe00, "Memory"); // MFBAHR0

 /* activate Flash at 0x00000000 0k that is connected to memory select 1 */
  __writeMemory32(0x00000000, 0xfffffe08, "Memory"); // MFBALR1
  __writeMemory32(0x00000000, 0xfffffe0c, "Memory"); // MFBAHR1

 /* activate RAM at 0x00000000 8k that is connected to memory select 2 */
  __writeMemory32( 0x00000000, 0xfffffe10, "Memory" ) ;  // MFBAHR2
  __writeMemory32( 0x00000040, 0xfffffe14, "Memory" ) ;  // MFBALR2 8K

 /* activate RAM at 0x00000000 0k that is connected to memory select 3 */
  __writeMemory32( 0x00000000, 0xfffffe18, "Memory" ) ;  // MFBAHR3
  __writeMemory32( 0x00002030, 0xfffffe1c, "Memory" ) ;  // MFBALR3 0K


  // HET RAM static memory control register, use 7 wait states and
  // 32-bit access
  __writeMemory32(0x00000072, 0xFFFFFD04, "Memory"); // SMCR1

  // Map 1k HET RAM connected to memory select 4 at 0x00800000, size 2k
  __writeMemory32(0x00000080, 0xfffffe20, "Memory"); // MFBAHR4
  __writeMemory32(0x00000020, 0xfffffe24, "Memory"); // MFBALR4

  // Trailing wait states controlled by TWS bits, use write buffer for
  // expansion bus access
  __writeMemory32(0x00000003, 0xFFFFFD2C, "Memory"); // WCR0

  // Map 256k flash connected to memory select 0 at 0x00400000, size 256k
  // and activate new mapping by writing 1 to MFBALR0.

  __writeMemory32(0x00000190, 0xfffffe04, "Memory"); // MFBALR0

   __writeMemory32( 0x0000000b, 0xffffffdc, "Memory" ) ;  // GCR SYSCLK *4 and /4 = SYSCLK  /1
}


execUserPreload()
{
  SetupRAM();

}


execUserReset()
{
  SetupRAM();
}