/* * Copyright(C) 2020, Toshiba Electronic Device Solutions Corporation * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* Linker script for Toshiba TMPM4GR */ /* Linker script to configure memory regions. */ #if !defined(MBED_APP_START) #define MBED_APP_START 0x00000000 #endif #if !defined(MBED_APP_SIZE) #define MBED_APP_SIZE 0x200000 #endif #if !defined(MBED_CONF_TARGET_BOOT_STACK_SIZE) #define MBED_CONF_TARGET_BOOT_STACK_SIZE 0x400 #endif STACK_SIZE = MBED_CONF_TARGET_BOOT_STACK_SIZE; MEMORY { FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE /* 8_byte_aligned((175 + 16) vect * 4 bytes) = 8_byte_aligned(0x2FC) = 0x300 */ RAM (rwx) : ORIGIN = (0x20000000 + 0x300), LENGTH = (256K - 0x300) } /* Linker script to place sections and symbol values. Should be used together * with other linker script that defines memory regions FLASH and RAM. * It references following symbols, which must be defined in code: * Reset_Handler : Entry of reset handler * * It defines following symbols, which code can use without definition: * __exidx_start * __exidx_end * __copy_table_start__ * __copy_table_end__ * __zero_table_start__ * __zero_table_end__ * __etext * __data_start__ * __preinit_array_start * __preinit_array_end * __init_array_start * __init_array_end * __fini_array_start * __fini_array_end * __data_end__ * __bss_start__ * __bss_end__ * __end__ * end * __HeapBase * __HeapLimit * __StackLimit * __StackTop * __stack * __Vectors_End * __Vectors_Size */ ENTRY(Reset_Handler) SECTIONS { .text : { KEEP(*(.vectors)) __Vectors_End = .; __Vectors_Size = __Vectors_End - __Vectors; __end__ = .; *(.text*) KEEP(*(.init)) KEEP(*(.fini)) /* .ctors */ *crtbegin.o(.ctors) *crtbegin?.o(.ctors) *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors) *(SORT(.ctors.*)) *(.ctors) /* .dtors */ *crtbegin.o(.dtors) *crtbegin?.o(.dtors) *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors) *(SORT(.dtors.*)) *(.dtors) *(.rodata*) KEEP(*(.eh_frame*)) } > FLASH .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } > FLASH __exidx_start = .; .ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) } > FLASH __exidx_end = .; __etext = .; .data : AT (__etext) { __data_start__ = .; *(vtable) *(.data*) *(.ram_func*) . = ALIGN(4); /* preinit data */ PROVIDE_HIDDEN (__preinit_array_start = .); KEEP(*(.preinit_array)) PROVIDE_HIDDEN (__preinit_array_end = .); . = ALIGN(4); /* init data */ PROVIDE_HIDDEN (__init_array_start = .); KEEP(*(SORT(.init_array.*))) KEEP(*(.init_array)) PROVIDE_HIDDEN (__init_array_end = .); . = ALIGN(4); /* finit data */ PROVIDE_HIDDEN (__fini_array_start = .); KEEP(*(SORT(.fini_array.*))) KEEP(*(.fini_array)) PROVIDE_HIDDEN (__fini_array_end = .); KEEP(*(.jcr*)) . = ALIGN(4); /* All data end */ __data_end__ = .; } > RAM .bss : { . = ALIGN(4); __bss_start__ = .; *(.bss*) *(COMMON) . = ALIGN(4); __bss_end__ = .; } > RAM .heap (COPY): { __HeapBase = .; __end__ = .; end = __end__; KEEP(*(.heap*)) . = ORIGIN(RAM) + LENGTH(RAM) - STACK_SIZE; __HeapLimit = .; } > RAM /* .stack_dummy section doesn't contains any symbols. It is only * used for linker to calculate size of stack sections, and assign * values to stack symbols later */ .stack_dummy (COPY): { KEEP(*(.stack*)) } > RAM /* Set stack top to end of RAM, and stack limit move down by * size of stack_dummy section */ __StackTop = ORIGIN(RAM) + LENGTH(RAM); __StackLimit = __StackTop - STACK_SIZE; PROVIDE(__stack = __StackTop); /* Check if data + heap + stack exceeds RAM limit */ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack") }