Other Parts Discussed in Thread: C2000WARE, TIDM-02011
Hi,
I have two application in Flash memory , one is flashed from Flash sector 3-8 and other is flashed from Flash sector 9-14. My Boot loader code (which resides in Flash 0)is responsible for selecting application and jumping to main of selected application .
Can you please let me know how to execute the following steps
1. How can i load Flash sector 3-8 when Application one is selected or load Flash sector 9-14 for application two.
2.After loading How can i jump to main of selected application
Below is my linker file
MEMORY
{
BOOT_RSVD : origin = 0x00000002, length = 0x00000126
RAMM0 : origin = 0x00000128, length = 0x000002D8
RAMM1 : origin = 0x00000400, length = 0x000003F8 /* on-chip RAM block M1 */
// RAMM1_RSVD : origin = 0x000007F8, length = 0x00000008 /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */
/* RAMLS4 : origin = 0x0000A000, length = 0x00000800
RAMLS5 : origin = 0x0000A800, length = 0x00000800
RAMLS6 : origin = 0x0000B000, length = 0x00000800
RAMLS7 : origin = 0x0000B800, length = 0x00000800 */
/* Combining all the LS RAMs */
RAMLS4567 : origin = 0x0000A000, length = 0x00002000
RAMGS0 : origin = 0x0000C000, length = 0x000007F8
// RAMGS0_RSVD : origin = 0x0000C7F8, length = 0x00000008 /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */
RESET : origin = 0x003FFFC0, length = 0x00000002
BOOTROM : origin = 0x003F0000, length = 0x00008000
BOOTROM_EXT : origin = 0x003F8000, length = 0x00007FC0
#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 20012000
GROUP { /* GROUP memory ranges for crc/checksum of entire flash */
#endif
#endif
BEGIN : origin = 0x080000, length = 0x000002
/* Flash sectors */
/* BANK 0 */
// FLASHBANK0 : origin = 0x00080000, length = 0x0000FFF0
FLASH_BANK0_SEC0 : origin = 0x080002, length = 0x000FFE /* on-chip Flash */
FLASH_BANK0_SEC1 : origin = 0x081000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC2 : origin = 0x082000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC3 : origin = 0x083000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC4 : origin = 0x084000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC5 : origin = 0x085000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC6 : origin = 0x086000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC7 : origin = 0x087000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC8 : origin = 0x088000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC9 : origin = 0x089000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC10 : origin = 0x08A000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC11 : origin = 0x08B000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC12 : origin = 0x08C000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC13 : origin = 0x08D000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC14 : origin = 0x08E000, length = 0x001000 /* on-chip Flash */
FLASH_BANK0_SEC15 : origin = 0x08F000, length = 0x000FF0 /* on-chip Flash */
FLASH_BANK0_SEC15_DO_NOT_USE : origin = 0x08FFF0, length = 0x000010 /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */
#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 20012000
} crc(_ccs_flash_checksum, algorithm=C28_CHECKSUM_16)
#endif
#endif
}
SECTIONS
{
codestart : > BEGIN, ALIGN(8)
.boot : > FLASH_BANK0_SEC0, ALIGN(8)
.text : >> FLASH_BANK0_SEC3 | FLASH_BANK0_SEC4 | FLASH_BANK0_SEC5| FLASH_BANK0_SEC6 | FLASH_BANK0_SEC7, ALIGN(8)
.cinit : > FLASH_BANK0_SEC15, ALIGN(8)
.switch : > FLASH_BANK0_SEC15, ALIGN(8)
.reset : > RESET, TYPE = DSECT /* not used, */
.stack : > RAMM1
.init_array : > FLASH_BANK0_SEC15, ALIGN(8)
.bss : > RAMLS4567
.bss:output : > RAMLS4567
.bss:cio : > RAMGS0
.const : > FLASH_BANK0_SEC15, ALIGN(8)
.data : > RAMLS4567
.sysmem : > RAMLS4567
ramgs0 : > RAMGS0
/* Allocate IQ math areas: */
IQmath : > RAMLS4567
IQmathTables : > RAMLS4567
.TI.ramfunc : LOAD = FLASH_BANK0_SEC15,
RUN = RAMGS0,
LOAD_START(RamfuncsLoadStart),
LOAD_SIZE(RamfuncsLoadSize),
LOAD_END(RamfuncsLoadEnd),
RUN_START(RamfuncsRunStart),
RUN_SIZE(RamfuncsRunSize),
RUN_END(RamfuncsRunEnd),
ALIGN(8)
/* crc/checksum section configured as COPY section to avoid including in executable */
.TI.memcrc : type = COPY
}
/*
//===========================================================================
// End of file.
//===========================================================================
*/
and my Bootloader code
void _c_int00(void)
{
//Read selected Application slot
if( Application slot 2)
{
//Load Application 2 from Flash sector 3 to 9
//Jump to main of application 2
}
else
{
//Load Application 1 from Flash sector 3 to 9
//Jump to main of application 1
}
}
Thanks ,
Revathi
