Hi Everyone,
I'm working on a MPC5604B and I'm trying to customize the default Flash linker file in order to map my Interrupts Table appart from the default code section.
I shortened the default internal_flash section from 0x0007C000 to 0x0007B000 in order to reserve space for my ISR table. So now my .lcf file defines these two areas:
internal_flash: org = 0x00003000, len = 0x0007B000 (default area for flash code)
flash_isr_handler: org = 0x0007E000, len = 0x00001000 (my specific area for ISR table)
Then in the "Sections" part of the linker file, I set-up the relocation of my interrupt vector table into my dedicated area:
GROUP : {
.mydatainflash (CONST) ALIGN(2048) : {
*(.__initialized_flash_isr_handle)
*(.__uninitialized_flash_isr_handle)
}
} > flash_isr_handler*/
However, when my program starts, It gets stucks in the IVOR2 Exception: "Data Storage Interrupt Handler", as if it would be trying to perform a kind of initialization of my table without the relevant permissions / access.
What is the solution to put Constant data in a specific Flash area appart from the rest of the code ?
Other information that might interrest you:
I get no problem when I locate my interrupt vector table in the internal_flash area like this - but it does not suit my needs:
GROUP : {
.text : {}
.text_vle (VLECODE) ALIGN(0x08): {
*(.text)
*(.text_vle)
}
.rodata (CONST) : {
*(.rdata)
*(.rodata)
}
/** This works fine: */
.__initialized_flash_isr_handle ALIGN(2048) : {}
.__uninitialized_flash_isr_handle ALIGN(2048) : {}
.ctors : {}
.dtors : {}
extab : {}
extabindex : {}
} > internal_flash
My Interrupt Vectors Table is defined like that:
#pragma push /* Save the current state */
#pragma section data_type ".__initialized_flash_isr_handle" ".__uninitialized_flash_isr_handle"
const INTSInterruptFn INTSSwInterruptsTable[INTS_U8_NUMBER_OF_ISR] =
{
interrupt_handler, /* Vector - 0 software interrupt 0 */
[...]
interrupt_handler /* Vector - 216 Reserved */
};
#pragma pop
You wan find attached my whole linker file that make the problem occur.
Original Attachment has been moved to: FLASH.lcf.zip
