/* 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 * */ /* If BT is not built at all */ 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 = 0x330000-0x18 /* (0x18 offset above is a convenience for the app binary image generation. Flash cache has 64KB pages. The .bin file which is flashed to the chip has a 0x18 byte file header. Setting this offset makes it simple to meet the flash cache MMU's constraint that (paddr % 64KB == vaddr % 64KB).) */ /* 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. Note: Length of this section *should* be 0x50000, and this extra DRAM is available in heap at runtime. However due to static ROM memory usage at this 176KB mark, the additional static memory temporarily cannot be used. */ dram0_0_seg (RW) : org = 0x3FFB0000 + 0xdb5c, len = 0x2c200 - 0xdb5c /* Flash mapped constant data */ drom0_0_seg (R) : org = 0x3F400018, len = 0x400000-0x18 /* (See iram0_2_seg for meaning of 0x18 offset in the above.) */ /* 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 + 512, len = 0x1000 - 512 } /* Heap ends at top of dram0_0_seg */ _heap_end = 0x40000000 - 0x0;