MEMORY
{
  /*
   * STM32F72xx flash sectors 0-5 form the 256 KiB application region.
   * Sectors 6 and 7 are two independently erasable 128 KiB configuration
   * journal slots at 0x0804_0000 and 0x0806_0000. They are deliberately not
   * linker regions, so application sections cannot overlap persistent data.
   */
  FLASH : ORIGIN = 0x08000000, LENGTH = 256K

  /*
   * STM32F722 RAM totals 256 KiB:
   *  - DTCM:  64 KiB at 0x2000_0000
   *  - SRAM1: 176 KiB at 0x2001_0000
   *  - SRAM2: 16 KiB at 0x2003_C000
   *
   * SRAM1 and SRAM2 are contiguous and DMA-accessible. DTCM remains separate
   * for a future explicit placement policy.
   */
  RAM : ORIGIN = 0x20010000, LENGTH = 192K
}

/* Absolute symbols are the single source of truth for the Rust NOR adapter. */
__kaptan_config_slot0_start = 0x08040000;
__kaptan_config_slot1_start = 0x08060000;
__kaptan_config_journal_end = 0x08080000;

ASSERT(ORIGIN(FLASH) + LENGTH(FLASH) == __kaptan_config_slot0_start,
       "application FLASH must end at configuration slot 0")
ASSERT(__kaptan_config_slot1_start - __kaptan_config_slot0_start == 128K,
       "configuration slot 0 must be one F722 128 KiB sector")
ASSERT(__kaptan_config_journal_end - __kaptan_config_slot1_start == 128K,
       "configuration slot 1 must be one F722 128 KiB sector")