Boot segment and General segment with .gld file for CodeGuard

Date : 2021/09/05

Write by : J.L.

---

/*
 * Dual panel memory regions
 */

#ifdef __DUAL_PARTITION
  reset          : ORIGIN = 0x0,           LENGTH = 0x4
  ivt            : ORIGIN = 0x4,           LENGTH = 0x1FC
  /*program (xr)   : ORIGIN = 0x1000,         LENGTH = 0x9B80*/
  program (xr)   : ORIGIN = 0x200,         LENGTH = 0xA980
  FSEC           : ORIGIN = 0xAB80,        LENGTH = 0x2
  FBSLIM         : ORIGIN = 0xAB90,        LENGTH = 0x2
  FSIGN          : ORIGIN = 0xAB94,        LENGTH = 0x2
  FOSCSEL        : ORIGIN = 0xAB98,        LENGTH = 0x2
  FOSC           : ORIGIN = 0xAB9C,        LENGTH = 0x2
  FWDT           : ORIGIN = 0xABA0,        LENGTH = 0x2
  FPOR           : ORIGIN = 0xABA4,        LENGTH = 0x2
  FICD           : ORIGIN = 0xABA8,        LENGTH = 0x2
  FDEVOPT        : ORIGIN = 0xABAC,        LENGTH = 0x2
  FALTREG        : ORIGIN = 0xABB0,        LENGTH = 0x2
  FBTSEQ         : ORIGIN = 0xABFC,        LENGTH = 0x2
#endif

Singal Panel :

#ifndef __DUAL_PARTITION
__Key_BASE = 0x200;
__BS_BASE = 0x280;      /* Added by Joss */
__CODE_BASE = 0x1000;    /*__CODE_BASE = 0x200;*/
__CODE_LENGTH = 0x15580;
__IVT_BASE  = 0x4;
#endif

Dual Panel :

/*
 * Dual panel memory regions
 */

#ifdef __DUAL_PARTITION
__NO_HANDLES = 1;          /* Suppress handles on this device  */
__Key_BASE = 0x200;
__BS_BASE = 0x280;      /* Added by Joss */
__CODE_BASE = 0x1000;    /*__CODE_BASE = 0x200;*/
__CODE_LENGTH = 0xA980;
__IVT_BASE  = 0x4;
#endif

Constant variable section :

 BS_KeySection : AT(__Key_BASE)
 {
        *(.BS_Key);
 } >program

Constant variable in C code:

const unsigned char __attribute__ ((section(".BS_Key"), space(psv) )) BS_Key[] = {"1234zxyw123412341234"};

Functions section:

 BS_Section __BS_BASE :     /* Added by Joss */
 {
        *(BS_Section);
        *(BS1_Section);
        *(BS2_Section);
        *(BS3_Section);
 } >program

Functions declared in C code:

unsigned int __attribute__ (( section("BS_Section") )) BS_Program(unsigned int PSWD ) //  Boot segment Application Code
{ 
	if(PSWD == 0x1234)
		LATAbits.LATA3 = 1;		// PASS
	else
		LATAbits.LATA4 = 1;		// FAIL

	LATAbits.LATA0 =~ LATAbits.LATA0;
    
    
    if( PSWD < sizeof(BS_Key))
        return BS_Key[PSWD];
    else
        return -1;
    
}
unsigned int __attribute__ (( section("BS1_Section") )) BS1_Program(unsigned int PSWD ) //  Boot segment Application Code
{ 
    if( PSWD < sizeof(BS_Key))
        return BS_Key[PSWD];
    else
        return -1;    
}
unsigned int __attribute__ (( section("BS2_Section") )) BS2_Program(unsigned int PSWD ) //  Boot segment Application Code
{ 
    if( PSWD < sizeof(BS_Key))
        return BS_Key[PSWD];
    else
        return -1;    
}