I'm struggling to figure out how to allocate the CLAmath library to memory in the linker command file so that it is stored in Flash. I have previously run my code with the CLAmath library stored in RAM. Below is the linker command file. You will see that I try to assign the math tables to FlashA ( CLA1mathTables : > FLASHA, PAGE=0 ) but I'm unclear exactly the CLA is given access to that section or how it is copied over to RAM on start up.
Thank you for any advice,
Matt
// The user must define CLA_C in the project linker settings if using the
// CLA C compiler
// Project Properties -> C2000 Linker -> Advanced Options -> Command File
// Preprocessing -> --define
#ifdef CLA_C
// Define a size for the CLA scratchpad area that will be used
// by the CLA compiler for local symbols and temps
// Also force references to the special symbols that mark the
// scratchpad are.
CLA_SCRATCHPAD_SIZE = 0x100;
--undef_sym=__cla_scratchpad_end
--undef_sym=__cla_scratchpad_start
#endif //CLA_C
MEMORY
{
PAGE 0 :
/* BEGIN is used for the "boot to SARAM" bootloader mode */
BEGIN : origin = 0x080000, length = 0x000002
RAMM0 : origin = 0x000122, length = 0x0002DE
RAMD0 : origin = 0x00B000, length = 0x000800
RAMLS4 : origin = 0x00A000, length = 0x000800
RAMLS5 : origin = 0x00A800, length = 0x000800
RAMGS14 : origin = 0x01A000, length = 0x001000 /* Only Available on , F28377S, F28375S devices. Remove line on other devices. */
RAMGS15 : origin = 0x01B000, length = 0x001000 /* Only Available on , F28377S, F28375S devices. Remove line on other devices. */
RESET : origin = 0x3FFFC0, length = 0x000002
/* Flash sectors */
FLASHA : origin = 0x080002, length = 0x001FFE /* on-chip Flash */
FLASHB : origin = 0x082000, length = 0x002000 /* on-chip Flash */ //MB, Changed all FlashB sections to FlashE because it is 4x larger
FLASHC : origin = 0x084000, length = 0x002000 /* on-chip Flash */
FLASHD : origin = 0x086000, length = 0x002000 /* on-chip Flash */
FLASHE : origin = 0x088000, length = 0x008000 /* on-chip Flash */
FLASHF : origin = 0x090000, length = 0x008000 /* on-chip Flash */
FLASHG : origin = 0x098000, length = 0x008000 /* on-chip Flash */
FLASHH : origin = 0x0A0000, length = 0x008000 /* on-chip Flash */
FLASHI : origin = 0x0A8000, length = 0x008000 /* on-chip Flash */
FLASHJ : origin = 0x0B0000, length = 0x008000 /* on-chip Flash */
FLASHK : origin = 0x0B8000, length = 0x002000 /* on-chip Flash */
FLASHL : origin = 0x0BA000, length = 0x002000 /* on-chip Flash */
FLASHM : origin = 0x0BC000, length = 0x002000 /* on-chip Flash */
FLASHN : origin = 0x0BE000, length = 0x002000 /* on-chip Flash */
PAGE 1 :
BOOT_RSVD : origin = 0x000002, length = 0x000120 /* Part of M0, BOOT rom will use this for stack */
RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
RAMLS0 : origin = 0x008000, length = 0x000800
RAMLS1 : origin = 0x008800, length = 0x000800
RAMLS2 : origin = 0x009000, length = 0x000800
RAMLS3 : origin = 0x009800, length = 0x000800
RAMGS0 : origin = 0x00C000, length = 0x001000
RAMGS1 : origin = 0x00D000, length = 0x001000
RAMGS2 : origin = 0x00E000, length = 0x001000
RAMGS3 : origin = 0x00F000, length = 0x001000
RAMGS4 : origin = 0x010000, length = 0x001000
RAMGS5 : origin = 0x011000, length = 0x009000
//SRAMGS6 : origin = 0x012000, length = 0x001000 //MB commented this, made RAMGS5 twice as long to accomodate a lot of global varial memory (.ebss)
// RAMGS7 : origin = 0x013000, length = 0x001000 //MB 2/21/2017 commented out two more lines and made RAMGS5 =0x004000
// RAMGS8 : origin = 0x014000, length = 0x001000
// RAMGS9 : origin = 0x015000, length = 0x001000
// RAMGS10 : origin = 0x016000, length = 0x001000
// RAMGS11 : origin = 0x017000, length = 0x001000
// RAMGS12 : origin = 0x018000, length = 0x001000 /* Only Available on , F28377S, F28375S devices. Remove line on other devices. */
//RAMGS13 : origin = 0x019000, length = 0x001000 /* Only Available on , F28377S, F28375S devices. Remove line on other devices. */
CLA1_MSGRAMLOW : origin = 0x001480, length = 0x000080
CLA1_MSGRAMHIGH : origin = 0x001500, length = 0x000080
}
SECTIONS
{
/* Allocate program areas: */
.cinit : > FLASHE PAGE = 0, ALIGN(4)
.pinit : > FLASHE, PAGE = 0, ALIGN(4)
.text : > FLASHE PAGE = 0, ALIGN(4)
codestart : > BEGIN PAGE = 0, ALIGN(4)
//MB, Commented out the following sections according to this: e2e.ti.com/.../535034
/* ramfuncs : LOAD = FLASHD,
RUN = RAMLS4,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)*/
/* Allocate uninitalized data sections: */
.stack : > RAMM1 PAGE = 1
.ebss : > RAMGS5 PAGE = 1 //MB, Changed from RAMLS2 to RAMGS5
.esysmem : > RAMGS5 PAGE = 1 //MB, Changed from RAMLS2 to RAMGS5
/* Initalized sections go in Flash */
.econst : > FLASHE PAGE = 0, ALIGN(4)
.switch : > FLASHE PAGE = 0, ALIGN(4)
.reset : > RESET, PAGE = 0, TYPE = DSECT /* not used, */
Filter_RegsFile : > RAMGS0, PAGE = 1
/* Sine Table */
//SINTBL : > FLASHN, PAGE = 0 //Added these two lines, changed to Page=0
CLA1mathTables : > FLASHA, PAGE=0
/* Data Log */
DLOG : > RAMGS3, PAGE = 1
/* CLA specific sections */
Cla1Prog : LOAD = FLASHD,
RUN = RAMLS5,
LOAD_START(_Cla1funcsLoadStart),
LOAD_END(_Cla1funcsLoadEnd),
RUN_START(_Cla1funcsRunStart),
LOAD_SIZE(_Cla1funcsLoadSize),
PAGE = 0, ALIGN(4)
CLADataLS0 : > RAMLS0, PAGE=1
CLADataLS1 : > RAMLS1, PAGE=1
Cla1ToCpuMsgRAM : > CLA1_MSGRAMLOW, PAGE = 1
CpuToCla1MsgRAM : > CLA1_MSGRAMHIGH, PAGE = 1
#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 15009000
.TI.ramfunc : {} LOAD = FLASHD,
RUN = RAMLS4,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)
#endif
#endif
/* The following section definition are for SDFM examples */
// Filter1_RegsFile : > RAMGS1, PAGE = 1, fill=0x1111
// CICRAM : > RAMGS1, PAGE = 1
Filter2_RegsFile : > RAMGS2, PAGE = 1, fill=0x2222
Filter3_RegsFile : > RAMGS3, PAGE = 1, fill=0x3333
Filter4_RegsFile : > RAMGS4, PAGE = 1, fill=0x4444
#ifdef CLA_C
/* CLA C compiler sections */
//
// Must be allocated to memory the CLA has write access to
//
CLAscratch :
{ *.obj(CLAscratch)
. += CLA_SCRATCHPAD_SIZE;
*.obj(CLAscratch_end) } > RAMLS1, PAGE = 1
.scratchpad : > RAMLS1, PAGE = 1
.bss_cla : > RAMLS1, PAGE = 1
.const_cla : LOAD = FLASHE,
RUN = RAMLS1,
RUN_START(_Cla1ConstRunStart),
LOAD_START(_Cla1ConstLoadStart),
LOAD_SIZE(_Cla1ConstLoadSize),
PAGE = 1
#endif //CLA_C
}
/*
//===========================================================================
// End of file.
//===========================================================================
