On 02/02/2021 20:10, Robin Mueller wrote:
+ /* Not an ideal solution but required for lwIP on the STM32H7 BSP.
+ This places the DMA descriptors for lwIP at the start of SRAM3.
+ The MPU still needs to be configured for the DMA descriptor regions to
be
+ bufferable, non-cacheable, non-shareable (first 256 bytes) */
+ .lwip_sec_stm32h7 (NOLOAD) : ALIGN_WITH_INPUT {
+ . = ABSOLUTE(0x30040000);
+ *(.RxDecripSection)
+ . = ABSOLUTE(0x30040060);
+ *(.TxDecripSection)
+ . = ABSOLUTE(0x30040200);
+ *(.RxArraySection)
+ } >SRAM_3 AT> REGION_TEXT_LOAD
+
This is the wrong linker command file. This stuff should be in
spec/build/bsps/arm/stm32h7/linkcmdsmemory.yml
with an output section name like ".stm32h7_sram_3" and corresponding
input section names. Why do you need absolute addresses here?
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