arduino-esp32/tools/sdk/ld/esp32_out.ld

/* ESP32 Linker Script Memory Layout

   This file describes the memory layout (memory blocks) as virtual
   memory addresses.

   esp32.common.ld contains output sections to link compiler output
   into these memory blocks.

   ***

   This linker script is passed through the C preprocessor to include
   configuration options.

   Please use preprocessor features sparingly! Restrict
   to simple macros with numeric values, and/or #if/#endif blocks.
*/
/*
 *
 * Automatically generated file; DO NOT EDIT.
 * Espressif IoT Development Framework Configuration
 *
 */
MEMORY
{
  /* All these values assume the flash cache is on, and have the blocks this uses subtracted from the length
  of the various regions. The 'data access port' dram/drom regions map to the same iram/irom regions but
  are connected to the data port of the CPU and eg allow bytewise access. */
  /* IRAM for PRO cpu. Not sure if happy with this, this is MMU area... */
  iram0_0_seg (RX) : org = 0x40080000, len = 0x20000
  /* Even though the segment name is iram, it is actually mapped to flash */
  iram0_2_seg (RX) : org = 0x400D0018, len = 0x330000
  /* Shared data RAM, excluding memory reserved for ROM bss/data/stack.

     Enabling Bluetooth & Trace Memory features in menuconfig will decrease
     the amount of RAM available.
  */
  dram0_0_seg (RW) : org = 0x3FFB0000 + 0x10000,
                                     len = 0x50000 - 0x0 - 0x10000
  /* Flash mapped constant data */
  drom0_0_seg (R) : org = 0x3F400010, len = 0x800000
  /* RTC fast memory (executable). Persists over deep sleep.
   */
  rtc_iram_seg(RWX) : org = 0x400C0000, len = 0x2000
  /* RTC slow memory (data accessible). Persists over deep sleep.

     Start of RTC slow memory is reserved for ULP co-processor code + data, if enabled.
  */
  rtc_slow_seg(RW) : org = 0x50000000 + 0,
                                     len = 0x1000 - 0
}
/* Heap ends at top of dram0_0_seg */
_heap_end = 0x40000000 - 0x0;