e06ca69b2f
via xmodem to the DBGU port when the AT91 comes up in recovery mode. The recovery loader will then load your program via xmodem into SDRAM at 1MB which can do its things. It needs to be tweaked to the specific board one is using, but it fits in < 1kB (all of Atmel's ARM products have at least 8kb of SRAM that I can tell, so this should work for them all). Parts of this code were provided by Kwikbyte with copyright specifically disclaimed. I heavily modified it to act as a recovery loader (before it was a bootstrap loader) and to optimize for size (before I started the size was closer to 8k). Bootstrap loaders for SPI and IIC to follow.
86 lines
2.1 KiB
INI
86 lines
2.1 KiB
INI
/*******************************************************************************
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*
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* Filename: linker.cfg
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*
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* linker config file used for internal RAM or eeprom images at address 0.
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*
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* Revision information:
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*
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* 20AUG2004 kb_admin initial creation
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* 12JAN2005 kb_admin move data to SDRAM
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*
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* BEGIN_KBDD_BLOCK
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* No warranty, expressed or implied, is included with this software. It is
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* provided "AS IS" and no warranty of any kind including statutory or aspects
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* relating to merchantability or fitness for any purpose is provided. All
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* intellectual property rights of others is maintained with the respective
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* owners. This software is not copyrighted and is intended for reference
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* only.
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* END_BLOCK
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*
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* $FreeBSD$
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******************************************************************************/
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OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
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"elf32-littlearm")
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OUTPUT_ARCH(arm)
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ENTRY(start)
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SEARCH_DIR(/usr/local/arm/2.95.3/arm-linux/lib);
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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. = 0;
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.text :
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{
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*(.text)
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*(.text.*)
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*(.stub)
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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*(.gnu.linkonce.t.*)
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*(.glue_7t) *(.glue_7)
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}
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PROVIDE (__etext = .);
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PROVIDE (_etext = .);
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PROVIDE (etext = .);
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.data :
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{
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__data_start = . ;
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*(.data)
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*(.data.*)
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*(.gnu.linkonce.d.*)
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SORT(CONSTRUCTORS)
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}
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_edata = .;
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PROVIDE (edata = .);
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__bss_start = .;
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__bss_start__ = .;
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.sbss :
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{
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PROVIDE (__sbss_start = .);
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PROVIDE (___sbss_start = .);
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*(.dynsbss)
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*(.sbss)
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*(.sbss.*)
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*(.gnu.linkonce.sb.*)
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*(.scommon)
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PROVIDE (__sbss_end = .);
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PROVIDE (___sbss_end = .);
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}
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.bss :
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{
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*(.dynbss)
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*(.bss)
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*(.bss.*)
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*(.gnu.linkonce.b.*)
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*(COMMON)
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/* Align here to ensure that the .bss section occupies space up to
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_end. Align after .bss to ensure correct alignment even if the
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.bss section disappears because there are no input sections. */
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. = ALIGN(32 / 8);
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}
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. = ALIGN(32 / 8);
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_end = .;
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_bss_end__ = . ; __bss_end__ = . ; __end__ = . ;
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PROVIDE (end = .);
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}
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