/* Simplified memory map for the bootloader. * Make sure the bootloader can load into main memory without overwriting itself. */ MEMORY { iram_seg (RWX) : org = 0x40050000, len = 0x4000 /* 16KB, SRAM Block_14 */ iram_loader_seg (RWX) : org = 0x40054000, len = 0x4000 /* 16KB, SRAM Block_15 */ dram_seg (RW) : org = 0x3FFE8000, len = 0x2800 /* 10KB, Top of SRAM Block_16, and before ROM data and stack */ } /* Default entry point: */ ENTRY(call_start_cpu0); SECTIONS { .iram_loader.text : { . = ALIGN (16); _loader_text_start = ABSOLUTE(.); *(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*) *(.iram1 .iram1.*) /* catch stray IRAM_ATTR */ *liblog.a:(.literal .text .literal.* .text.*) *libgcc.a:(.literal .text .literal.* .text.*) *libbootloader_support.a:bootloader_common.*(.literal .text .literal.* .text.*) *libbootloader_support.a:bootloader_flash.*(.literal .text .literal.* .text.*) *libbootloader_support.a:bootloader_random.*(.literal .text .literal.* .text.*) *libbootloader_support.a:bootloader_efuse_esp32s2.*(.literal .text .literal.* .text.*) *libbootloader_support.a:bootloader_utility.*(.literal .text .literal.* .text.*) *libbootloader_support.a:bootloader_sha.*(.literal .text .literal.* .text.*) *libbootloader_support.a:esp_image_format.*(.literal .text .literal.* .text.*) *libbootloader_support.a:flash_encrypt.*(.literal .text .literal.* .text.*) *libbootloader_support.a:flash_partitions.*(.literal .text .literal.* .text.*) *libbootloader_support.a:secure_boot.*(.literal .text .literal.* .text.*) *libbootloader_support.a:secure_boot_signatures.*(.literal .text .literal.* .text.*) *libmicro-ecc.a:*.*(.literal .text .literal.* .text.*) *libspi_flash.a:*.*(.literal .text .literal.* .text.*) *libsoc.a:rtc_wdt.*(.literal .text .literal.* .text.*) *libefuse.a:*.*(.literal .text .literal.* .text.*) *(.fini.literal) *(.fini) *(.gnu.version) _loader_text_end = ABSOLUTE(.); } > iram_loader_seg .iram.text : { . = ALIGN (16); *(.entry.text) *(.init.literal) *(.init) } > iram_seg /* Shared RAM */ .dram0.bss (NOLOAD) : { . = ALIGN (8); _bss_start = ABSOLUTE(.); *(.dynsbss) *(.sbss) *(.sbss.*) *(.gnu.linkonce.sb.*) *(.scommon) *(.sbss2) *(.sbss2.*) *(.gnu.linkonce.sb2.*) *(.dynbss) *(.bss) *(.bss.*) *(.gnu.linkonce.b.*) *(COMMON) . = ALIGN (8); _bss_end = ABSOLUTE(.); } >dram_seg .dram0.data : { _data_start = ABSOLUTE(.); *(.data) *(.data.*) *(.gnu.linkonce.d.*) *(.data1) *(.sdata) *(.sdata.*) *(.gnu.linkonce.s.*) *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*) *(.jcr) _data_end = ABSOLUTE(.); } >dram_seg .dram0.rodata : { _rodata_start = ABSOLUTE(.); *(.rodata) *(.rodata.*) *(.gnu.linkonce.r.*) *(.rodata1) __XT_EXCEPTION_TABLE_ = ABSOLUTE(.); *(.xt_except_table) *(.gcc_except_table) *(.gnu.linkonce.e.*) *(.gnu.version_r) *(.eh_frame) . = (. + 3) & ~ 3; /* C++ constructor and destructor tables, properly ordered: */ __init_array_start = ABSOLUTE(.); KEEP (*crtbegin.*(.ctors)) KEEP (*(EXCLUDE_FILE (*crtend.*) .ctors)) KEEP (*(SORT(.ctors.*))) KEEP (*(.ctors)) __init_array_end = ABSOLUTE(.); KEEP (*crtbegin.*(.dtors)) KEEP (*(EXCLUDE_FILE (*crtend.*) .dtors)) KEEP (*(SORT(.dtors.*))) KEEP (*(.dtors)) /* C++ exception handlers table: */ __XT_EXCEPTION_DESCS_ = ABSOLUTE(.); *(.xt_except_desc) *(.gnu.linkonce.h.*) __XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.); *(.xt_except_desc_end) *(.dynamic) *(.gnu.version_d) _rodata_end = ABSOLUTE(.); /* Literals are also RO data. */ _lit4_start = ABSOLUTE(.); *(*.lit4) *(.lit4.*) *(.gnu.linkonce.lit4.*) _lit4_end = ABSOLUTE(.); . = ALIGN(4); _heap_start = ABSOLUTE(.); } >dram_seg .iram.text : { _stext = .; _text_start = ABSOLUTE(.); *(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*) *(.iram .iram.*) /* catch stray IRAM_ATTR */ *(.fini.literal) *(.fini) *(.gnu.version) _text_end = ABSOLUTE(.); _etext = .; } > iram_seg }