diff options
Diffstat (limited to 'src/lambdakey-v1.0/lambda.ld')
| -rw-r--r-- | src/lambdakey-v1.0/lambda.ld | 117 | 
1 files changed, 117 insertions, 0 deletions
| diff --git a/src/lambdakey-v1.0/lambda.ld b/src/lambdakey-v1.0/lambda.ld new file mode 100644 index 00000000..5de65eb5 --- /dev/null +++ b/src/lambdakey-v1.0/lambda.ld @@ -0,0 +1,117 @@ +/* + * Copyright © 2012 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +MEMORY { +	rom (rx) :   ORIGIN = 0x08001000, LENGTH = 25K +	flash (r):   ORIGIN = 0x08007400, LENGTH = 3k +	ram (!w) :   ORIGIN = 0x20000000, LENGTH = 6k - 128 +	stack (!w) : ORIGIN = 0x20000000 + 6k - 128, LENGTH = 128 +} + +INCLUDE registers.ld + +EXTERN (stm_interrupt_vector) + +SECTIONS { +	/* +	 * Rom contents +	 */ + +	.interrupt ORIGIN(ram) : AT (ORIGIN(rom)) { +		__interrupt_start__ = .; +		__interrupt_rom__ = ORIGIN(rom); +		*(.interrupt)	/* Interrupt vectors */ +		__interrupt_end__ = .; +	} > ram + +	.text ORIGIN(rom) + 0x100 : { +		__text_start__ = .; + +		/* Ick. What I want is to specify the +		 * addresses of some global constants so +		 * that I can find them across versions +		 * of the application. I can't figure out +		 * how to make gnu ld do that, so instead +		 * we just load the two files that include +		 * these defines in the right order here and +		 * expect things to 'just work'. Don't change +		 * the contents of those files, ok? +		 */ +		ao_romconfig.o(.romconfig*) +		ao_product.o(.romconfig*) + +		*(.text*)	/* Executable code */ +		*(.ARM.exidx* .gnu.linkonce.armexidx.*) +		*(.rodata*)	/* Constants */ + +	} > rom +	__text_end__ = .; +	 + +	/* Boot data which must live at the start of ram so that +	 * the application and bootloader share the same addresses. +	 * This must be all uninitialized data +	 */ +	.boot (NOLOAD) : { +		__boot_start__ = .; +		*(.boot) +		. = ALIGN(4); +		__boot_end__ = .; +	} >ram + +	/* Functions placed in RAM (required for flashing) +	 * +	 * Align to 8 bytes as that's what the ARM likes text +	 * segment alignments to be, and if we don't, then +	 * we end up with a mismatch between the location in +	 * ROM and the desired location in RAM. I don't +	 * entirely understand this, but at least this appears +	 * to work... +	 */ + +	.textram BLOCK(8): { +		__data_start__ = .; +		__text_ram_start__ = .; +		*(.ramtext) +		__text_ram_end = .; +	} >ram AT>rom + +	/* Data -- relocated to RAM, but written to ROM +	 */ +	.data : { +		*(.data)	/* initialized data */ +		. = ALIGN(4); +		__data_end__ = .; +	} >ram AT>rom + +	.bss : { +		__bss_start__ = .; +		*(.bss) +		*(COMMON) +		. = ALIGN(4); +		__bss_end__ = .; +	} >ram + +	PROVIDE(end = .); + +	PROVIDE(__stack__ = ORIGIN(stack) + LENGTH(stack)); + +	__flash__ = ORIGIN(flash); +} + +ENTRY(start); | 
