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Align ISR vector table to 512bytes

This commit is contained in:
IsaacDynamo 2022-01-08 23:35:37 +01:00 committed by Dimitris Mantzouranis
parent c34385de6b
commit 0fb99f8a4b
1 changed files with 19 additions and 0 deletions
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19
os/common/startup/ARMCMx/compilers/GCC/ld/SN32F260.ld
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@ -82,5 +82,24 @@ REGION_ALIAS("BSS_RAM", ram0);
/* RAM region to be used for the default heap.*/ /* RAM region to be used for the default heap.*/
REGION_ALIAS("HEAP_RAM", ram0); REGION_ALIAS("HEAP_RAM", ram0);
/* Custom vectors section with 512 byte alignment.
The default ChibiOS linker script aligns to 1024 bytes, because that is the worse
case alignment requirement for STM32 chips.
See https://forum.chibios.org/viewtopic.php?t=5554
However the sonix-keyboard-bootloader expects the ISR vector table to be at 0x200.
This is not possible if the alignment is 1024 bytes.
By adding this custom section with 512 byte alignment before the inclusion of
the rules.ld defaults, the linker will use this section for .vectors objects. */
SECTIONS
{
.vectors_512_aligned : ALIGN(512)
{
KEEP(*(.vectors))
} > VECTORS_FLASH AT > VECTORS_FLASH_LMA
}
/* Generic rules inclusion.*/ /* Generic rules inclusion.*/
INCLUDE rules.ld INCLUDE rules.ld