/**************************************************************************** * boards/xtensa/esp23/esp32-core/scripts/esp32.template * 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. * * NOTE: That this is not the actual linker script but rather a "template" * for the elf32_out.ld script. This template script is passed through * the C preprocessor to include selected configuration options. * ****************************************************************************/ #include 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 + CONFIG_ESP32_BT_RESERVE_DRAM, len = 0x50000 - CONFIG_ESP32_TRACEMEM_RESERVE_DRAM - CONFIG_ESP32_BT_RESERVE_DRAM /* 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 + CONFIG_ESP32_ULP_COPROC_RESERVE_MEM, len = 0x1000 - CONFIG_ESP32_ULP_COPROC_RESERVE_MEM } /* Heap ends at top of dram0_0_seg */ _eheap = 0x40000000 - CONFIG_ESP32_TRACEMEM_RESERVE_DRAM;