Tool/software: TI C/C++ Compiler
Hello,
in my current project i need to implement a bootloader. The bootloader is at the beginning of the flash. If an update of the application is not necessary the bootloader starts the application at address 0x41000.
So far the application is called by the bootloader as expected but behaves different than if programmed without bootloader at address 0x00.
Therfore i debugged the application in bootloader configuration(Startaddress 0x41000).
The problem occures if the code run into an undefined instruction, an software interrupt, an prefetch abort or an data abort.
In case i simulated one of these faults, the wrong interruptaddress is called.
The expected address is:
Application's linker file:
/*----------------------------------------------------------------------------*/
/* Memory Map */
MEMORY
{
#if defined(BOOTLOADER_ACTIVE)
VECTORS (X) : origin=0x00041000 length=0x00000030
#else
VECTORS (X) : origin=0x00000000 length=0x00000030
#endif
SOFTWAREINFOS (RW) : origin=0x000040000 length=0x0000800 // Zweiter Sektor, Aktualisiere die Softwareinformationen, wie CRC
SOFTWAREINFOSBOOT (RW) : origin=0x000040800 length=0x0000800 // Aktualisiere die Softwareinformationen für den BOOTLOADER
KERNEL (RX) : origin=0x00041030 length=0x00009600
FLASH0 (RX) : origin=0x00050630 length=0x000B59D0
STACKS (RW) : origin=0x08000000 length=0x00002000
KRAM (RW) : origin=0x08002000 length=0x00000800
BSSRAM (RW) : origin=0x08002800 length=(0x00007000 - 0x00002800)
DATARAM (RW) : origin=0x08007000 length=0x00000100
RAM (RW) : origin=0x0800A000 length=(0x0001F000 - 0x0000A000)
}
/*----------------------------------------------------------------------------*/
/* Section Configuration */
SECTIONS
{
.TI.crctab : {} > SOFTWAREINFOS/* The CRC tables generated by the linker are created in the special section .TI.crctab */
.intvecs : {} palign=8, crc_table(app_crc_table, algorithm=TMS570_CRC64_ISO) > VECTORS
/* FreeRTOS Kernel in protected region of Flash */
.kernelTEXT : {} palign=8, crc_table(app_crc_table, algorithm=TMS570_CRC64_ISO) > KERNEL
.cinit : {} palign=8, crc_table(app_crc_table, algorithm=TMS570_CRC64_ISO) > KERNEL
/* .pinit : {} palign=8, crc_table(app_crc_table, algorithm=TMS570_CRC64_ISO) > KERNEL */
/* Rest of code to user mode flash region */
.text : {} palign=8, crc_table(app_crc_table, algorithm=TMS570_CRC64_ISO) > FLASH0
.const : {.econst = .;} palign=8, crc_table(app_crc_table, algorithm=TMS570_CRC64_ISO), > FLASH0
.softwareinfos_str : {} > SOFTWAREINFOSBOOT
/* FreeRTOS Kernel data in protected region of RAM */
.kernelBSS : {} > KRAM
.kernelHEAP : {} > RAM
.bss : {} > BSSRAM
.data : {} > DATARAM
.sysmem : {} > RAM
}
Application's sys_intvecs.asm file:
;-------------------------------------------------------------------------------
.sect ".intvecs"
.arm
;-------------------------------------------------------------------------------
; import reference for interrupt routines
.ref _c_int00
.ref vPortSWI
.ref _dabort
.ref phantomInterrupt
.ref prefetchEntry
.ref undefEntry
.def resetEntry
;-------------------------------------------------------------------------------
; interrupt vectors
resetEntry
b _c_int00
b undefEntry
b vPortSWI
b prefetchEntry
b _dabort
b phantomInterrupt
ldr pc,[pc,#-0x1b0]
ldr pc,[pc,#-0x1b0]
;-------------------------------------------------------------------------------
Application's map file:
MEMORY CONFIGURATION
name origin length used unused attr fill
---------------------- -------- --------- -------- -------- ---- --------
SOFTWAREINFOS 00040000 00000800 00000080 00000780 RW
SOFTWAREINFOSBOOT 00040800 00000800 00000000 00000800 RW
VECTORS 00041000 00000030 00000020 00000010 X
KERNEL 00041030 00009600 00004440 000051c0 R X
FLASH0 00050630 000b59d0 00034df8 00080bd8 R X
STACKS 08000000 00002000 00000000 00002000 RW
KRAM 08002000 00000800 0000035c 000004a4 RW
BSSRAM 08002800 00004800 0000443c 000003c4 RW
DATARAM 08007000 00000100 00000051 000000af RW
RAM 0800a000 00015000 0000e000 00007000 RW
Any ideas what is going wrong?
Kind regards
Aron
