circuitpython/ports/litex/boards/fomu/fomu-spi.ld

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/*
GNU linker script for Fomu
*/
ENTRY(_start)
/* Specify the memory areas */
MEMORY
{
FLASH (rx) : ORIGIN = 0x20040000, LENGTH = 0x100000 /* entire flash, 1 MiB */
FLASH_FIRMWARE (rx) : ORIGIN = 0x20040000, LENGTH = 0x100000 /* entire flash, 1 MiB */
RAM (xrw) : ORIGIN = 0x10000000, LENGTH = 0x00020000 /* 128 KiB */
}
/* top end of the stack */
_estack = ORIGIN(RAM) + LENGTH(RAM);
/* define output sections */
SECTIONS
{
/* This is the initialized data section
The program executes knowing that the data is in the RAM
but the loader puts the initial values in the FLASH_FIRMWARE (inidata).
It is one task of the startup to copy the initial values from FLASH to RAM. */
.data : AT ( _sidata )
{
. = ALIGN(4);
_sdata = .; /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
*(.itcm.*) /* Instruction Tightly Coupled Memory */
*(.dtcm_data.*) /* Data Tightly Coupled Memory */
*(.text.cmp_lfn)
*(.text.qstr_find_strn)
*(.text.dcd_edpt_xfer)
*(.text.pop_rule)
*(.text.ff_wtoupper)
*(.text.dir_find)
*(.text.push_rule)
*(.text.csr_writel)
*(.text.csr_readl)
*(.text.timer0_ev_pending_write)
*(.text.autoreload_tick)
*(.text.filesystem_tick)
*(.text.usb_background)
*(.text.dcd_*)
*(.text.tud_control_*)
*(.text.tud_cdc_n_write_flush)
*(.text.tud_task)
*(.text.tu_edpt_dir)
*(.text.tu_fifo_empty)
*(.text.usbd_edpt_busy)
*(.text.usb_irq_handler)
*(.text.supervisor_tick)
*(.text.port_get_raw_ticks)
*(.text.__modsi3)
*(.text.__udivsi3)
*(.text.irq_getmask)
*(.text.irq_setmask)
*(.text.irq_pending)
*(.text._osal_q_lock)
*(.text.osal_queue_receive)
*(.text.mp_obj_get_type)
*(.text.mp_parse)
*(.text.parse_compile_execute)
*(.text.mp_map_lookup)
*(.text.mp_execute_bytecode) /* Note: this function is 7kb */
*(.ramtext) /* .text* sections (code) */
*(.ramtext*) /* .text* sections (code) */
*(.data) /* .data sections */
*(.data*) /* .data* sections */
*(.sdata) /* .data sections */
*(.sdata*) /* .data* sections */
. = ALIGN(4);
_edata = .; /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
} >RAM
/* The program code and other data goes into FLASH_FIRMWARE */
.text :
{
. = ALIGN(4);
KEEP(*(.text.start)) /* isr vector table */
*(.text) /* .text sections (code) */
*(.text*) /* .text* sections (code) */
*(.rodata) /* .rodata sections (constants, strings, etc.) */
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
*(.srodata) /* .rodata sections (constants, strings, etc.) */
*(.srodata*) /* .rodata* sections (constants, strings, etc.) */
. = ALIGN(4);
_etext = .; /* define a global symbol at end of code */
_sidata = _etext; /* This is used by the startup in order to initialize the .data section */
} >FLASH_FIRMWARE
/* Uninitialized data section */
.bss :
{
. = ALIGN(4);
_sbss = .; /* define a global symbol at bss start; used by startup code */
*(.bss)
*(.bss*)
*(.dtcm_bss.*) /* Data Tightly Coupled Memory */
*(.sbss)
*(.sbss*)
*(COMMON)
. = ALIGN(4);
_ebss = .; /* define a global symbol at bss end; used by startup code */
} >RAM
/* this is to define the start of the heap, and make sure we have a minimum size */
.heap :
{
. = ALIGN(4);
_heap_start = .; /* define a global symbol at heap start */
} >RAM
}