teralytic / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed by teralytic

targets/cmsis/TARGET_NXP/TARGET_LPC176X/TOOLCHAIN_GCC_ARM/LPC1768.ld@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* Linker script for mbed LPC1768 */
bogdanm 0:9b334a45a8ff 2
bogdanm 0:9b334a45a8ff 3 /* Linker script to configure memory regions. */
bogdanm 0:9b334a45a8ff 4 MEMORY
bogdanm 0:9b334a45a8ff 5 {
bogdanm 0:9b334a45a8ff 6 FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 512K
bogdanm 0:9b334a45a8ff 7 RAM (rwx) : ORIGIN = 0x100000C8, LENGTH = (32K - 0xC8)
bogdanm 0:9b334a45a8ff 8
bogdanm 0:9b334a45a8ff 9 USB_RAM(rwx) : ORIGIN = 0x2007C000, LENGTH = 16K
bogdanm 0:9b334a45a8ff 10 ETH_RAM(rwx) : ORIGIN = 0x20080000, LENGTH = 16K
bogdanm 0:9b334a45a8ff 11 }
bogdanm 0:9b334a45a8ff 12
bogdanm 0:9b334a45a8ff 13 /* Linker script to place sections and symbol values. Should be used together
bogdanm 0:9b334a45a8ff 14 * with other linker script that defines memory regions FLASH and RAM.
bogdanm 0:9b334a45a8ff 15 * It references following symbols, which must be defined in code:
bogdanm 0:9b334a45a8ff 16 * Reset_Handler : Entry of reset handler
bogdanm 0:9b334a45a8ff 17 *
bogdanm 0:9b334a45a8ff 18 * It defines following symbols, which code can use without definition:
bogdanm 0:9b334a45a8ff 19 * __exidx_start
bogdanm 0:9b334a45a8ff 20 * __exidx_end
bogdanm 0:9b334a45a8ff 21 * __etext
bogdanm 0:9b334a45a8ff 22 * __data_start__
bogdanm 0:9b334a45a8ff 23 * __preinit_array_start
bogdanm 0:9b334a45a8ff 24 * __preinit_array_end
bogdanm 0:9b334a45a8ff 25 * __init_array_start
bogdanm 0:9b334a45a8ff 26 * __init_array_end
bogdanm 0:9b334a45a8ff 27 * __fini_array_start
bogdanm 0:9b334a45a8ff 28 * __fini_array_end
bogdanm 0:9b334a45a8ff 29 * __data_end__
bogdanm 0:9b334a45a8ff 30 * __bss_start__
bogdanm 0:9b334a45a8ff 31 * __bss_end__
bogdanm 0:9b334a45a8ff 32 * __end__
bogdanm 0:9b334a45a8ff 33 * end
bogdanm 0:9b334a45a8ff 34 * __HeapLimit
bogdanm 0:9b334a45a8ff 35 * __StackLimit
bogdanm 0:9b334a45a8ff 36 * __StackTop
bogdanm 0:9b334a45a8ff 37 * __stack
bogdanm 0:9b334a45a8ff 38 */
bogdanm 0:9b334a45a8ff 39 ENTRY(Reset_Handler)
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41 SECTIONS
bogdanm 0:9b334a45a8ff 42 {
bogdanm 0:9b334a45a8ff 43 .text :
bogdanm 0:9b334a45a8ff 44 {
bogdanm 0:9b334a45a8ff 45 KEEP(*(.isr_vector))
bogdanm 0:9b334a45a8ff 46 *(.text*)
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 KEEP(*(.init))
bogdanm 0:9b334a45a8ff 49 KEEP(*(.fini))
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 /* .ctors */
bogdanm 0:9b334a45a8ff 52 *crtbegin.o(.ctors)
bogdanm 0:9b334a45a8ff 53 *crtbegin?.o(.ctors)
bogdanm 0:9b334a45a8ff 54 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
bogdanm 0:9b334a45a8ff 55 *(SORT(.ctors.*))
bogdanm 0:9b334a45a8ff 56 *(.ctors)
bogdanm 0:9b334a45a8ff 57
bogdanm 0:9b334a45a8ff 58 /* .dtors */
bogdanm 0:9b334a45a8ff 59 *crtbegin.o(.dtors)
bogdanm 0:9b334a45a8ff 60 *crtbegin?.o(.dtors)
bogdanm 0:9b334a45a8ff 61 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
bogdanm 0:9b334a45a8ff 62 *(SORT(.dtors.*))
bogdanm 0:9b334a45a8ff 63 *(.dtors)
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 *(.rodata*)
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 KEEP(*(.eh_frame*))
bogdanm 0:9b334a45a8ff 68 } > FLASH
bogdanm 0:9b334a45a8ff 69
bogdanm 0:9b334a45a8ff 70 .ARM.extab :
bogdanm 0:9b334a45a8ff 71 {
bogdanm 0:9b334a45a8ff 72 *(.ARM.extab* .gnu.linkonce.armextab.*)
bogdanm 0:9b334a45a8ff 73 } > FLASH
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 __exidx_start = .;
bogdanm 0:9b334a45a8ff 76 .ARM.exidx :
bogdanm 0:9b334a45a8ff 77 {
bogdanm 0:9b334a45a8ff 78 *(.ARM.exidx* .gnu.linkonce.armexidx.*)
bogdanm 0:9b334a45a8ff 79 } > FLASH
bogdanm 0:9b334a45a8ff 80 __exidx_end = .;
bogdanm 0:9b334a45a8ff 81
bogdanm 0:9b334a45a8ff 82 __etext = .;
bogdanm 0:9b334a45a8ff 83
bogdanm 0:9b334a45a8ff 84 .data : AT (__etext)
bogdanm 0:9b334a45a8ff 85 {
bogdanm 0:9b334a45a8ff 86 __data_start__ = .;
bogdanm 0:9b334a45a8ff 87 Image$$RW_IRAM1$$Base = .;
bogdanm 0:9b334a45a8ff 88 *(vtable)
bogdanm 0:9b334a45a8ff 89 *(.data*)
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91 . = ALIGN(4);
bogdanm 0:9b334a45a8ff 92 /* preinit data */
bogdanm 0:9b334a45a8ff 93 PROVIDE (__preinit_array_start = .);
bogdanm 0:9b334a45a8ff 94 KEEP(*(.preinit_array))
bogdanm 0:9b334a45a8ff 95 PROVIDE (__preinit_array_end = .);
bogdanm 0:9b334a45a8ff 96
bogdanm 0:9b334a45a8ff 97 . = ALIGN(4);
bogdanm 0:9b334a45a8ff 98 /* init data */
bogdanm 0:9b334a45a8ff 99 PROVIDE (__init_array_start = .);
bogdanm 0:9b334a45a8ff 100 KEEP(*(SORT(.init_array.*)))
bogdanm 0:9b334a45a8ff 101 KEEP(*(.init_array))
bogdanm 0:9b334a45a8ff 102 PROVIDE (__init_array_end = .);
bogdanm 0:9b334a45a8ff 103
bogdanm 0:9b334a45a8ff 104
bogdanm 0:9b334a45a8ff 105 . = ALIGN(4);
bogdanm 0:9b334a45a8ff 106 /* finit data */
bogdanm 0:9b334a45a8ff 107 PROVIDE (__fini_array_start = .);
bogdanm 0:9b334a45a8ff 108 KEEP(*(SORT(.fini_array.*)))
bogdanm 0:9b334a45a8ff 109 KEEP(*(.fini_array))
bogdanm 0:9b334a45a8ff 110 PROVIDE (__fini_array_end = .);
bogdanm 0:9b334a45a8ff 111
bogdanm 0:9b334a45a8ff 112 . = ALIGN(4);
bogdanm 0:9b334a45a8ff 113 /* All data end */
bogdanm 0:9b334a45a8ff 114 __data_end__ = .;
bogdanm 0:9b334a45a8ff 115
bogdanm 0:9b334a45a8ff 116 } > RAM
bogdanm 0:9b334a45a8ff 117
bogdanm 0:9b334a45a8ff 118
bogdanm 0:9b334a45a8ff 119 .bss :
bogdanm 0:9b334a45a8ff 120 {
bogdanm 0:9b334a45a8ff 121 __bss_start__ = .;
bogdanm 0:9b334a45a8ff 122 *(.bss*)
bogdanm 0:9b334a45a8ff 123 *(COMMON)
bogdanm 0:9b334a45a8ff 124 __bss_end__ = .;
bogdanm 0:9b334a45a8ff 125 Image$$RW_IRAM1$$ZI$$Limit = . ;
bogdanm 0:9b334a45a8ff 126 } > RAM
bogdanm 0:9b334a45a8ff 127
bogdanm 0:9b334a45a8ff 128
bogdanm 0:9b334a45a8ff 129 .heap :
bogdanm 0:9b334a45a8ff 130 {
bogdanm 0:9b334a45a8ff 131 __end__ = .;
bogdanm 0:9b334a45a8ff 132 end = __end__;
bogdanm 0:9b334a45a8ff 133 *(.heap*)
bogdanm 0:9b334a45a8ff 134 __HeapLimit = .;
bogdanm 0:9b334a45a8ff 135 } > RAM
bogdanm 0:9b334a45a8ff 136
bogdanm 0:9b334a45a8ff 137 /* .stack_dummy section doesn't contains any symbols. It is only
bogdanm 0:9b334a45a8ff 138 * used for linker to calculate size of stack sections, and assign
bogdanm 0:9b334a45a8ff 139 * values to stack symbols later */
bogdanm 0:9b334a45a8ff 140 .stack_dummy :
bogdanm 0:9b334a45a8ff 141 {
bogdanm 0:9b334a45a8ff 142 *(.stack)
bogdanm 0:9b334a45a8ff 143 } > RAM
bogdanm 0:9b334a45a8ff 144
bogdanm 0:9b334a45a8ff 145 /* Set stack top to end of RAM, and stack limit move down by
bogdanm 0:9b334a45a8ff 146 * size of stack_dummy section */
bogdanm 0:9b334a45a8ff 147 __StackTop = ORIGIN(RAM) + LENGTH(RAM);
bogdanm 0:9b334a45a8ff 148 __StackLimit = __StackTop - SIZEOF(.stack_dummy);
bogdanm 0:9b334a45a8ff 149 PROVIDE(__stack = __StackTop);
bogdanm 0:9b334a45a8ff 150
bogdanm 0:9b334a45a8ff 151 /* Check if data + heap + stack exceeds RAM limit */
bogdanm 0:9b334a45a8ff 152 ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
bogdanm 0:9b334a45a8ff 153
bogdanm 0:9b334a45a8ff 154
bogdanm 0:9b334a45a8ff 155 /* Code can explicitly ask for data to be
bogdanm 0:9b334a45a8ff 156 placed in these higher RAM banks where
bogdanm 0:9b334a45a8ff 157 they will be left uninitialized.
bogdanm 0:9b334a45a8ff 158 */
bogdanm 0:9b334a45a8ff 159 .AHBSRAM0 (NOLOAD):
bogdanm 0:9b334a45a8ff 160 {
bogdanm 0:9b334a45a8ff 161 Image$$RW_IRAM2$$Base = . ;
bogdanm 0:9b334a45a8ff 162 *(AHBSRAM0)
bogdanm 0:9b334a45a8ff 163 Image$$RW_IRAM2$$ZI$$Limit = .;
bogdanm 0:9b334a45a8ff 164 } > USB_RAM
bogdanm 0:9b334a45a8ff 165
bogdanm 0:9b334a45a8ff 166 .AHBSRAM1 (NOLOAD):
bogdanm 0:9b334a45a8ff 167 {
bogdanm 0:9b334a45a8ff 168 Image$$RW_IRAM3$$Base = . ;
bogdanm 0:9b334a45a8ff 169 *(AHBSRAM1)
bogdanm 0:9b334a45a8ff 170 Image$$RW_IRAM3$$ZI$$Limit = .;
bogdanm 0:9b334a45a8ff 171 } > ETH_RAM
bogdanm 0:9b334a45a8ff 172 }