view src/cs/system/template/gsm_ds_int8.template @ 275:79cfefc1e2b4

audio mode load: gracefully handle mode files of wrong AEC version Unfortunately our change of enabling L1_NEW_AEC (which is necessary in order to bring our Calypso ARM fw into match with the underlying DSP reality) brings along a change in the audio mode file binary format and file size - all those new tunable AEC parameters do need to be stored somewhere, after all. But we already have existing mode files in the old format, and setting AEC config to garbage when loading old audio modes (which is what would happen without the present change) is not an appealing proposition. The solution implemented in the present change is as follows: the audio mode loading code checks the file size, and if it differs from the active version of T_AUDIO_MODE, the T_AUDIO_AEC_CFG structure is cleared - set to the default (disabled AEC) for the compiled type of AEC. We got lucky in that this varying T_AUDIO_AEC_CFG structure sits at the end of T_AUDIO_MODE!
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 30 Jul 2021 02:55:48 +0000
parents 4e78acac3d88
children
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/*
 * Integrated Protocol Stack Linker command file (all components)
 *
 * Target : ARM
 *
 * Copyright (c) Texas Instruments 2002, Condat 2002
 *
 */

-c /* Autoinitialize variables at runtime */

/*********************************/
/* SPECIFY THE SYSTEM MEMORY MAP */
/*********************************/

MEMORY
{
  /* CS0: Flash 8 Mbytes ****************************************************/
  /* Interrupt Vectors Table */
  I_MEM   (RXI) : org = 0x00000000   len = 0x00000100

  /* Boot Sector */
  B_MEM   (RXI) : org = 0x00000100   len = 0x00001f00

  /* Magic Word for Calypso Boot ROM */
  MWC_MEM (RXI) : org = 0x00002000   len = 0x00000004  fill = 0x0000001

  /* Program Memory */
  P_MEM1  (RXI) : org = 0x00010000   len = 0x00000700
  P_MEM2  (RXI) : org = 0x00010700   len = 0x003ef900
  P_MEM3  (RXI) : org = 0x00400000   len = 0x00300000

  /* FFS Area */
  FFS_MEM (RX)  : org = 0x00700000   len = 0x00100000
  /**************************************************************************/

  /* CS1: External SRAM 1 Mbytes ********************************************/
  /* Data Memory */
  D_MEM1  (RW)  : org = 0x01000000   len = 0x00100000
  /**************************************************************************/

  /* CS2: External SRAM 8 Mbytes ********************************************/
  /* Data Memory */
  D_MEM2  (RW)  : org = 0x01800000   len = 0x00800000
  /**************************************************************************/

  /* CS6: Calypso Internal SRAM 512 kbytes **********************************/
  /* Code & Variables Memory */
  S_MEM   (RXW) : org = 0x00800000   len = 0x00080000
  /**************************************************************************/
}

/***********************************************/
/* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY */
/***********************************************/

/*
 * Since the bootloader directly calls the INT_Initialize() routine located
 * in int.s, this int.s code must always be mapped at the same address
 * (usually in the second flash sector). Its length is about 0x500 bytes.
 * Then comes the code that need to be loaded into the internal RAM.
 */

SECTIONS
{
    .intvecs : {} > I_MEM      /* Interrupt Vectors Table */
    .monitor : > B_MEM         /* Monitor Constants & Code */
    {
        $(CONST_BOOT_LIB)
    }

    .inttext : {} > P_MEM1     /* int.s Code */
    
    .bss_dar : > S_MEM         /* DAR SWE Variables */
    {
        $(BSS_DAR_LIB)
    }

    .bss     : > D_MEM1        /* Global & Static Variables */
    {
        $(BSS_BOOT_LIB)
    }

    /*
     * The rest of the code and constants is mapped in flash.
     */

    .cinit   : {} > P_MEM2     /* Initialization Tables */
    .const   : {} > P_MEM2     /* Constant Data */
    .text    : {} > P_MEM2     /* Code */

    .stackandheap : > S_MEM    /* System Stacks, etc... */
    {
      /* Leave 20 32bit words for register pushes. */
        . =  align(8);
      . += 20 * 4;

      /* Stack for abort and/or undefined modes. */
      exception_stack = .;

      /* Leave 38 32bit words for state saving on exceptions. */
        _xdump_buffer   = .;
      . += 38 * 4;
      . = align(8);

      /* Beginning of stacks and heap area - 2.75 kbytes (int.s) */
      stack_segment = .;
      . += 0xB00;
    }

    .data    : {} > S_MEM      /* Initialized Data */
    .sysmem  : {} > S_MEM      /* Dynamic Memory Allocation Area */

}