freebsd-nq/sys/boot/mips/beri/loader/loader.ldscript
Hans Petter Selasky b589760a6f Add optional support for USB to BERI loader. Fix the linker script so
that the garbage collection feature can be used when linking.

Sponsored by:	DARPA, AFRL
2014-05-30 16:47:54 +00:00

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/*-
* Copyright (c) 2011-2014 Robert N. M. Watson
* All rights reserved.
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
* ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
INCLUDE ../common/common.ldscript
/*
* Location where loader will execute.
*/
__loader_base__ = 0x20000;
__loader_base_vaddr__ = __mips64_xkphys_cached__ + __loader_base__;
/*
* Highest address the loader is allowed to use below the kernel.
*/
__loader_end__ = 0x100000;
__loader_end_vaddr__ = __mips64_xkphys_cached__ + __loader_end__;
OUTPUT_FORMAT("elf64-tradbigmips");
OUTPUT_ARCH(mips)
ENTRY(start)
SECTIONS
{
/*
* We rely on boot2 having (a) configured a stack, and (b) loaded us
* to an appropriate bit of physical/virtual memory such that no
* self-relocating code is required here.
*/
. = __loader_base_vaddr__;
. += SIZEOF_HEADERS;
.text ALIGN(0x8): {
start.o(.text*)
*(EXCLUDE_FILE (start.o) .text*)
*(.rodata*)
__start_set_Xcommand_set = .;
KEEP(*(set_Xcommand_set))
__stop_set_Xcommand_set = .;
}
.data ALIGN(0x8): { *(.data*)}
.bss ALIGN(0x8): { *(.bss*) }
__heap = ALIGN(0x8); /* 64-bit aligned heap pointer */
__data_end = .;
__boot_loader_len__ = . - __loader_base_vaddr__;
__bss_start = ADDR(.bss);
__bss_end = ALIGN(__bss_start + SIZEOF(.bss), 0x8);
__heap_start = .;
__heap_end = __loader_end_vaddr__;
__heap_len = __heap_end - __heap_start;
}