MEMORY { /* This file is intended for parts in the STM32H723 family. (RM0468) */ /* - FLASH and RAM are mandatory memory sections. */ /* - The sum of all non-FLASH sections must add to 564k total device RAM. */ /* - The FLASH section size must match your device, see table below. */ /* FLASH */ /* Select the appropriate FLASH size for your device. */ /* - STM32H730xB 128K */ /* - STM32H723xE/725xE 512K */ /* - STM32H723xG/725xG/733xG/735xG 1M */ FLASH1 : ORIGIN = 0x08000000, LENGTH = 1M /* Data TCM */ /* - Two contiguous 64KB RAMs. */ /* - Used for interrupt handlers, stacks and general RAM. */ /* - Zero wait-states. */ /* - The DTCM is taken as the origin of the base ram. (See below.) */ /* This is also where the interrupt table and such will live, */ /* which is required for deterministic performance. */ DTCM : ORIGIN = 0x20000000, LENGTH = 128K /* Instruction TCM */ /* - More memory can be assigned to ITCM. See AXI SRAM notes, below. */ /* - Used for latency-critical interrupt handlers etc. */ /* - Zero wait-states. */ ITCM : ORIGIN = 0x00000000, LENGTH = 64K + 0K /* AXI SRAM */ /* - AXISRAM is in D1 and accessible by all system masters except BDMA. */ /* - Suitable for application data not stored in DTCM. */ /* - Zero wait-states. */ /* - The 192k of extra shared RAM is fully allotted to the AXI SRAM by default. */ /* As a result: 64k (64k + 0k) for ITCM and 320k (128k + 192k) for AXI SRAM. */ /* This can be re-configured via the TCM_AXI_SHARED[1,0] register when more */ /* ITCM is required. */ AXISRAM : ORIGIN = 0x24000000, LENGTH = 128K + 192K /* AHB SRAM */ /* - SRAM1-2 are in D2 and accessible by all system masters except BDMA, LTDC */ /* and SDMMC1. Suitable for use as DMA buffers. */ /* - SRAM4 is in D3 and additionally accessible by the BDMA. Used for BDMA */ /* buffers, for storing application data in lower-power modes. */ /* - Zero wait-states. */ SRAM1 : ORIGIN = 0x30000000, LENGTH = 16K SRAM2 : ORIGIN = 0x30040000, LENGTH = 16K SRAM4 : ORIGIN = 0x38000000, LENGTH = 16K /* Backup SRAM */ /* Used to store data during low-power sleeps. */ BSRAM : ORIGIN = 0x38800000, LENGTH = 4K } /* /* Assign the memory regions defined above for use. */ /* /* Provide the mandatory FLASH and RAM definitions for cortex-m-rt's linker script. */ REGION_ALIAS(FLASH, FLASH1); REGION_ALIAS(RAM, DTCM); /* The location of the stack can be overridden using the `_stack_start` symbol. */ /* - Set the stack location at the end of RAM, using all remaining space. */ _stack_start = ORIGIN(RAM) + LENGTH(RAM); /* The location of the .text section can be overridden using the */ /* `_stext` symbol. By default it will place after .vector_table. */ /* _stext = ORIGIN(FLASH) + 0x40c; */ /* Define sections for placing symbols into the extra memory regions above. */ /* This makes them accessible from code. */ /* - ITCM, DTCM and AXISRAM connect to a 64-bit wide bus -> align to 8 bytes. */ /* - All other memories connect to a 32-bit wide bus -> align to 4 bytes. */ SECTIONS { .itcm (NOLOAD) : ALIGN(8) { *(.itcm .itcm.*); . = ALIGN(8); } > ITCM .axisram (NOLOAD) : ALIGN(8) { *(.axisram .axisram.*); . = ALIGN(8); } > AXISRAM .sram1 (NOLOAD) : ALIGN(4) { *(.sram1 .sram1.*); . = ALIGN(4); } > SRAM1 .sram2 (NOLOAD) : ALIGN(4) { *(.sram2 .sram2.*); . = ALIGN(4); } > SRAM2 .sram4 (NOLOAD) : ALIGN(4) { *(.sram4 .sram4.*); . = ALIGN(4); } > SRAM4 .bsram (NOLOAD) : ALIGN(4) { *(.bsram .bsram.*); . = ALIGN(4); } > BSRAM };