82fb761c0f
PacketBuffer facilitates packet oriented BLE protocols such as BLE MIDI and the Apple Media Service. This also adds PHY, MTU and connection event extension negotiation to speed up data transfer when possible.
144 lines
4.7 KiB
Plaintext
144 lines
4.7 KiB
Plaintext
/*
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GNU linker script for NRF52840 w/ s140 6.0.0 SoftDevice
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*/
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/* Specify the memory areas */
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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x100000 /* entire flash, 1 MiB */
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/* nRF SoftDevice */
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FLASH_MBR (rx) : ORIGIN = ${MBR_START_ADDR}, LENGTH = ${MBR_SIZE}
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FLASH_SD (rx) : ORIGIN = ${SD_FLASH_START_ADDR}, LENGTH = ${SD_FLASH_SIZE}
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FLASH_ISR (rx) : ORIGIN = ${ISR_START_ADDR}, LENGTH = ${ISR_SIZE}
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FLASH_FIRMWARE (rx) : ORIGIN = ${CIRCUITPY_FIRMWARE_START_ADDR}, LENGTH = ${CIRCUITPY_FIRMWARE_SIZE}
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FLASH_BLE_CONFIG (r) : ORIGIN = ${CIRCUITPY_BLE_CONFIG_START_ADDR}, LENGTH = ${CIRCUITPY_BLE_CONFIG_SIZE}
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FLASH_NVM (r) : ORIGIN = ${CIRCUITPY_INTERNAL_NVM_START_ADDR}, LENGTH = ${CIRCUITPY_INTERNAL_NVM_SIZE}
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FLASH_FATFS (r) : ORIGIN = ${CIRCUITPY_INTERNAL_FLASH_FILESYSTEM_START_ADDR}, LENGTH = ${CIRCUITPY_INTERNAL_FLASH_FILESYSTEM_SIZE}
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FLASH_BOOTLOADER (rx) : ORIGIN = ${BOOTLOADER_START_ADDR}, LENGTH = ${BOOTLOADER_SIZE}
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FLASH_BOOTLOADER_SETTINGS (r) : ORIGIN = ${BOOTLOADER_SETTINGS_START_ADDR}, LENGTH = ${BOOTLOADER_SETTINGS_SIZE}
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/* 0x2000000 - RAM:ORIGIN is reserved for Softdevice */
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/* SoftDevice 6.1.0 takes 0x7b78 bytes (30.86 kb) minimum with high ATT MTU. */
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/* To measure the minimum required amount of memory for given configuration, set this number
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high enough to work and then check the mutation of the value done by sd_ble_enable. */
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RAM (xrw) : ORIGIN = 0x20000000 + 32K, LENGTH = 256K - 32K
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}
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/* produce a link error if there is not this amount of RAM for these sections */
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_minimum_stack_size = 40K;
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_minimum_heap_size = 0;
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/* top end of the stack */
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/*_stack_end = ORIGIN(RAM) + LENGTH(RAM);*/
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_estack = ORIGIN(RAM) + LENGTH(RAM);
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/* RAM extents for the garbage collector */
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_ram_end = ORIGIN(RAM) + LENGTH(RAM);
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_heap_end = 0x20020000; /* tunable */
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/* define output sections */
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SECTIONS
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{
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/* The startup code goes first into FLASH */
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.isr_vector :
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{
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. = ALIGN(4);
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KEEP(*(.isr_vector)) /* Startup code */
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. = ALIGN(4);
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} >FLASH_ISR
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/* The program code and other data goes into FLASH */
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.text :
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{
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. = ALIGN(4);
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*(.text) /* .text sections (code) */
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*(.text*) /* .text* sections (code) */
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*(.rodata) /* .rodata sections (constants, strings, etc.) */
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*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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/* *(.glue_7) */ /* glue arm to thumb code */
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/* *(.glue_7t) */ /* glue thumb to arm code */
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. = ALIGN(4);
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_etext = .; /* define a global symbol at end of code */
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} >FLASH_FIRMWARE
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/*
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.ARM.extab :
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{
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*(.ARM.extab* .gnu.linkonce.armextab.*)
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} >FLASH_FIRMWARE
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.ARM :
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{
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__exidx_start = .;
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*(.ARM.exidx*)
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__exidx_end = .;
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} >FLASH_FIRMWARE
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*/
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/* used by the startup to initialize data */
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_sidata = .;
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/* This is the initialized data section
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The program executes knowing that the data is in the RAM
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but the loader puts the initial values in the FLASH (inidata).
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It is one task of the startup to copy the initial values from FLASH to RAM. */
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.data : AT (_sidata)
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{
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. = ALIGN(4);
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_sdata = .; /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
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_ram_start = .; /* create a global symbol at ram start for garbage collector */
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*(.data) /* .data sections */
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*(.data*) /* .data* sections */
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. = ALIGN(4);
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_edata = .; /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
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} >RAM
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/* Uninitialized data section */
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.bss :
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{
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. = ALIGN(4);
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_sbss = .; /* define a global symbol at bss start; used by startup code */
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*(.bss)
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = .; /* define a global symbol at bss end; used by startup code and GC */
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} >RAM
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/* this is to define the start of the heap, and make sure we have a minimum size */
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.heap :
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{
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. = ALIGN(4);
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PROVIDE ( end = . );
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PROVIDE ( _end = . );
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_heap_start = .; /* define a global symbol at heap start */
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. = . + _minimum_heap_size;
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} >RAM
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/* this just checks there is enough RAM for the stack */
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.stack :
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{
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. = ALIGN(4);
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. = . + _minimum_stack_size;
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. = ALIGN(4);
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} >RAM
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/* Remove information from the standard libraries */
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/*
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/DISCARD/ :
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{
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libc.a ( * )
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libm.a ( * )
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libgcc.a ( * )
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}
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*/
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}
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