osd-contiki/platform/osd-merkur-256/custom-avr6.xm
Ralf Schlatterbeck 406fb7ea44 Add linker script
Also get rid of genbackupisr hack: We can achieve the same thing with
avr-objcopy which doesn't need additional software.
We use the new bootloader setting for irq-save area of 0x800.
2017-08-22 10:13:36 +02:00

269 lines
8.3 KiB
Text

/* Script for -n: mix text and data on same page */
/* Copyright (C) 2014-2015 Free Software Foundation, Inc.
Copying and distribution of this script, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. */
OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
OUTPUT_ARCH(avr:6)
__TEXT_SECTION_OFFSET__ = DEFINED(__TEXT_SECTION_OFFSET__) ? __TEXT_SECTION_OFFSET__ : 0x0;
__TEXT_REGION_LENGTH__ = DEFINED(__TEXT_REGION_LENGTH__) ? __TEXT_REGION_LENGTH__ : 1024K;
__DATA_REGION_LENGTH__ = DEFINED(__DATA_REGION_LENGTH__) ? __DATA_REGION_LENGTH__ : 0xfe00;
__EEPROM_REGION_LENGTH__ = DEFINED(__EEPROM_REGION_LENGTH__) ? __EEPROM_REGION_LENGTH__ : 64K;
__FUSE_REGION_LENGTH__ = DEFINED(__FUSE_REGION_LENGTH__) ? __FUSE_REGION_LENGTH__ : 1K;
__LOCK_REGION_LENGTH__ = DEFINED(__LOCK_REGION_LENGTH__) ? __LOCK_REGION_LENGTH__ : 1K;
__SIGNATURE_REGION_LENGTH__ = DEFINED(__SIGNATURE_REGION_LENGTH__) ? __SIGNATURE_REGION_LENGTH__ : 1K;
__USER_SIGNATURE_REGION_LENGTH__ = DEFINED(__USER_SIGNATURE_REGION_LENGTH__) ? __USER_SIGNATURE_REGION_LENGTH__ : 1K;
MEMORY
{
text (rx) : ORIGIN = 0, LENGTH = __TEXT_REGION_LENGTH__
data (rw!x) : ORIGIN = 0x800200, LENGTH = __DATA_REGION_LENGTH__
eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = __EEPROM_REGION_LENGTH__
fuse (rw!x) : ORIGIN = 0x820000, LENGTH = __FUSE_REGION_LENGTH__
lock (rw!x) : ORIGIN = 0x830000, LENGTH = __LOCK_REGION_LENGTH__
signature (rw!x) : ORIGIN = 0x840000, LENGTH = __SIGNATURE_REGION_LENGTH__
user_signatures (rw!x) : ORIGIN = 0x850000, LENGTH = __USER_SIGNATURE_REGION_LENGTH__
}
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/* PR 13812: Placing the trampolines here gives a better chance
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/* The jump trampolines for the 16-bit limited relocs will reside here. */
*(.trampolines)
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__trampolines_end = . ;
/* avr-libc expects these data to reside in lower 64K. */
*libprintf_flt.a:*(.progmem.data)
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/* For future tablejump instruction arrays for 3 byte pc devices.
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__custom_lowtext_end_skip = . ;
/* From this point on, we don't bother about wether the insns are
below or above the 16 bits boundary. */
*(.init0) /* Start here after reset. */
KEEP (*(.init0))
*(.init1)
KEEP (*(.init1))
*(.init2) /* Clear __zero_reg__, set up stack pointer. */
KEEP (*(.init2))
*(.init3)
KEEP (*(.init3))
*(.init4) /* Initialize data and BSS. */
KEEP (*(.init4))
*(.init5)
KEEP (*(.init5))
*(.init6) /* C++ constructors. */
KEEP (*(.init6))
*(.init7)
KEEP (*(.init7))
*(.init8)
KEEP (*(.init8))
*(.init9) /* Call main(). */
KEEP (*(.init9))
*(.text)
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*(.fini0) /* Infinite loop after program termination. */
KEEP (*(.fini0))
_etext = . ;
} > text
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PROVIDE (__bss_end = .) ;
} > data
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__data_load_end = __data_load_start + SIZEOF(.data);
/* Global data not cleared after reset. */
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{
PROVIDE (__noinit_start = .) ;
*(.noinit*)
PROVIDE (__noinit_end = .) ;
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PROVIDE (__heap_start = .) ;
} > data
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/* See .data above... */
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} > eeprom
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} > fuse
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KEEP(*(.lock*))
} > lock
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KEEP(*(.signature*))
} > signature
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} > user_signatures
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