273 lines
7.0 KiB
ArmAsm
273 lines
7.0 KiB
ArmAsm
|
/*
|
||
|
|
* arch/xtensa/kernel/vmlinux.lds.S
|
||
|
|
*
|
||
|
|
* Xtensa linker script
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
* License. See the file "COPYING" in the main directory of this archive
|
||
|
|
* for more details.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2001 - 2005 Tensilica Inc.
|
||
|
|
*
|
||
|
|
* Chris Zankel <chris@zankel.net>
|
||
|
|
* Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
|
||
|
|
* Joe Taylor <joe@tensilica.com, joetylr@yahoo.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <asm-generic/vmlinux.lds.h>
|
||
|
|
#include <asm/page.h>
|
||
|
|
#include <asm/thread_info.h>
|
||
|
|
|
||
|
|
#include <variant/core.h>
|
||
|
|
#include <platform/hardware.h>
|
||
|
|
OUTPUT_ARCH(xtensa)
|
||
|
|
ENTRY(_start)
|
||
|
|
|
||
|
|
#ifdef __XTENSA_EB__
|
||
|
|
jiffies = jiffies_64 + 4;
|
||
|
|
#else
|
||
|
|
jiffies = jiffies_64;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef KERNELOFFSET
|
||
|
|
#define KERNELOFFSET 0xd0001000
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Note: In the following macros, it would be nice to specify only the
|
||
|
|
vector name and section kind and construct "sym" and "section" using
|
||
|
|
CPP concatenation, but that does not work reliably. Concatenating a
|
||
|
|
string with "." produces an invalid token. CPP will not print a
|
||
|
|
warning because it thinks this is an assembly file, but it leaves
|
||
|
|
them as multiple tokens and there may or may not be whitespace
|
||
|
|
between them. */
|
||
|
|
|
||
|
|
/* Macro for a relocation entry */
|
||
|
|
|
||
|
|
#define RELOCATE_ENTRY(sym, section) \
|
||
|
|
LONG(sym ## _start); \
|
||
|
|
LONG(sym ## _end); \
|
||
|
|
LONG(LOADADDR(section))
|
||
|
|
|
||
|
|
/* Macro to define a section for a vector.
|
||
|
|
*
|
||
|
|
* Use of the MIN function catches the types of errors illustrated in
|
||
|
|
* the following example:
|
||
|
|
*
|
||
|
|
* Assume the section .DoubleExceptionVector.literal is completely
|
||
|
|
* full. Then a programmer adds code to .DoubleExceptionVector.text
|
||
|
|
* that produces another literal. The final literal position will
|
||
|
|
* overlay onto the first word of the adjacent code section
|
||
|
|
* .DoubleExceptionVector.text. (In practice, the literals will
|
||
|
|
* overwrite the code, and the first few instructions will be
|
||
|
|
* garbage.)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define SECTION_VECTOR(sym, section, addr, max_prevsec_size, prevsec) \
|
||
|
|
section addr : AT((MIN(LOADADDR(prevsec) + max_prevsec_size, \
|
||
|
|
LOADADDR(prevsec) + SIZEOF(prevsec)) + 3) & ~ 3) \
|
||
|
|
{ \
|
||
|
|
. = ALIGN(4); \
|
||
|
|
sym ## _start = ABSOLUTE(.); \
|
||
|
|
*(section) \
|
||
|
|
sym ## _end = ABSOLUTE(.); \
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Mapping of input sections to output sections when linking.
|
||
|
|
*/
|
||
|
|
|
||
|
|
SECTIONS
|
||
|
|
{
|
||
|
|
. = KERNELOFFSET;
|
||
|
|
/* .text section */
|
||
|
|
|
||
|
|
_text = .;
|
||
|
|
_stext = .;
|
||
|
|
_ftext = .;
|
||
|
|
|
||
|
|
.text :
|
||
|
|
{
|
||
|
|
/* The HEAD_TEXT section must be the first section! */
|
||
|
|
HEAD_TEXT
|
||
|
|
TEXT_TEXT
|
||
|
|
VMLINUX_SYMBOL(__sched_text_start) = .;
|
||
|
|
*(.sched.literal .sched.text)
|
||
|
|
VMLINUX_SYMBOL(__sched_text_end) = .;
|
||
|
|
VMLINUX_SYMBOL(__lock_text_start) = .;
|
||
|
|
*(.spinlock.literal .spinlock.text)
|
||
|
|
VMLINUX_SYMBOL(__lock_text_end) = .;
|
||
|
|
|
||
|
|
}
|
||
|
|
_etext = .;
|
||
|
|
PROVIDE (etext = .);
|
||
|
|
|
||
|
|
. = ALIGN(16);
|
||
|
|
|
||
|
|
RODATA
|
||
|
|
|
||
|
|
/* Relocation table */
|
||
|
|
|
||
|
|
.fixup : { *(.fixup) }
|
||
|
|
|
||
|
|
EXCEPTION_TABLE(16)
|
||
|
|
/* Data section */
|
||
|
|
|
||
|
|
_fdata = .;
|
||
|
|
RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)
|
||
|
|
_edata = .;
|
||
|
|
|
||
|
|
/* Initialization code and data: */
|
||
|
|
|
||
|
|
. = ALIGN(PAGE_SIZE);
|
||
|
|
__init_begin = .;
|
||
|
|
INIT_TEXT_SECTION(PAGE_SIZE)
|
||
|
|
|
||
|
|
.init.data :
|
||
|
|
{
|
||
|
|
INIT_DATA
|
||
|
|
. = ALIGN(0x4);
|
||
|
|
__tagtable_begin = .;
|
||
|
|
*(.taglist)
|
||
|
|
__tagtable_end = .;
|
||
|
|
|
||
|
|
. = ALIGN(16);
|
||
|
|
__boot_reloc_table_start = ABSOLUTE(.);
|
||
|
|
|
||
|
|
RELOCATE_ENTRY(_WindowVectors_text,
|
||
|
|
.WindowVectors.text);
|
||
|
|
RELOCATE_ENTRY(_KernelExceptionVector_text,
|
||
|
|
.KernelExceptionVector.text);
|
||
|
|
RELOCATE_ENTRY(_UserExceptionVector_text,
|
||
|
|
.UserExceptionVector.text);
|
||
|
|
RELOCATE_ENTRY(_DoubleExceptionVector_literal,
|
||
|
|
.DoubleExceptionVector.literal);
|
||
|
|
RELOCATE_ENTRY(_DoubleExceptionVector_text,
|
||
|
|
.DoubleExceptionVector.text);
|
||
|
|
RELOCATE_ENTRY(_DebugInterruptVector_text,
|
||
|
|
.DebugInterruptVector.text);
|
||
|
|
|
||
|
|
__boot_reloc_table_end = ABSOLUTE(.) ;
|
||
|
|
|
||
|
|
INIT_SETUP(XCHAL_ICACHE_LINESIZE)
|
||
|
|
INIT_CALLS
|
||
|
|
CON_INITCALL
|
||
|
|
SECURITY_INITCALL
|
||
|
|
INIT_RAM_FS
|
||
|
|
}
|
||
|
|
|
||
|
|
PERCPU(PAGE_SIZE)
|
||
|
|
|
||
|
|
/* We need this dummy segment here */
|
||
|
|
|
||
|
|
. = ALIGN(4);
|
||
|
|
.dummy : { LONG(0) }
|
||
|
|
|
||
|
|
/* The vectors are relocated to the real position at startup time */
|
||
|
|
|
||
|
|
SECTION_VECTOR (_WindowVectors_text,
|
||
|
|
.WindowVectors.text,
|
||
|
|
XCHAL_WINDOW_VECTORS_VADDR, 4,
|
||
|
|
.dummy)
|
||
|
|
SECTION_VECTOR (_DebugInterruptVector_literal,
|
||
|
|
.DebugInterruptVector.literal,
|
||
|
|
XCHAL_DEBUG_VECTOR_VADDR - 4,
|
||
|
|
SIZEOF(.WindowVectors.text),
|
||
|
|
.WindowVectors.text)
|
||
|
|
SECTION_VECTOR (_DebugInterruptVector_text,
|
||
|
|
.DebugInterruptVector.text,
|
||
|
|
XCHAL_DEBUG_VECTOR_VADDR,
|
||
|
|
4,
|
||
|
|
.DebugInterruptVector.literal)
|
||
|
|
SECTION_VECTOR (_KernelExceptionVector_literal,
|
||
|
|
.KernelExceptionVector.literal,
|
||
|
|
XCHAL_KERNEL_VECTOR_VADDR - 4,
|
||
|
|
SIZEOF(.DebugInterruptVector.text),
|
||
|
|
.DebugInterruptVector.text)
|
||
|
|
SECTION_VECTOR (_KernelExceptionVector_text,
|
||
|
|
.KernelExceptionVector.text,
|
||
|
|
XCHAL_KERNEL_VECTOR_VADDR,
|
||
|
|
4,
|
||
|
|
.KernelExceptionVector.literal)
|
||
|
|
SECTION_VECTOR (_UserExceptionVector_literal,
|
||
|
|
.UserExceptionVector.literal,
|
||
|
|
XCHAL_USER_VECTOR_VADDR - 4,
|
||
|
|
SIZEOF(.KernelExceptionVector.text),
|
||
|
|
.KernelExceptionVector.text)
|
||
|
|
SECTION_VECTOR (_UserExceptionVector_text,
|
||
|
|
.UserExceptionVector.text,
|
||
|
|
XCHAL_USER_VECTOR_VADDR,
|
||
|
|
4,
|
||
|
|
.UserExceptionVector.literal)
|
||
|
|
SECTION_VECTOR (_DoubleExceptionVector_literal,
|
||
|
|
.DoubleExceptionVector.literal,
|
||
|
|
XCHAL_DOUBLEEXC_VECTOR_VADDR - 16,
|
||
|
|
SIZEOF(.UserExceptionVector.text),
|
||
|
|
.UserExceptionVector.text)
|
||
|
|
SECTION_VECTOR (_DoubleExceptionVector_text,
|
||
|
|
.DoubleExceptionVector.text,
|
||
|
|
XCHAL_DOUBLEEXC_VECTOR_VADDR,
|
||
|
|
32,
|
||
|
|
.DoubleExceptionVector.literal)
|
||
|
|
|
||
|
|
. = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
|
||
|
|
. = ALIGN(PAGE_SIZE);
|
||
|
|
|
||
|
|
__init_end = .;
|
||
|
|
|
||
|
|
BSS_SECTION(0, 8192, 0)
|
||
|
|
|
||
|
|
_end = .;
|
||
|
|
|
||
|
|
/* only used by the boot loader */
|
||
|
|
|
||
|
|
. = ALIGN(0x10);
|
||
|
|
.bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
|
||
|
|
|
||
|
|
. = ALIGN(0x1000);
|
||
|
|
__initrd_start = .;
|
||
|
|
.initrd : { *(.initrd) }
|
||
|
|
__initrd_end = .;
|
||
|
|
|
||
|
|
.ResetVector.text XCHAL_RESET_VECTOR_VADDR :
|
||
|
|
{
|
||
|
|
*(.ResetVector.text)
|
||
|
|
}
|
||
|
|
|
||
|
|
.xt.lit : { *(.xt.lit) }
|
||
|
|
.xt.prop : { *(.xt.prop) }
|
||
|
|
|
||
|
|
.debug 0 : { *(.debug) }
|
||
|
|
.line 0 : { *(.line) }
|
||
|
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
||
|
|
.debug_sfnames 0 : { *(.debug_sfnames) }
|
||
|
|
.debug_aranges 0 : { *(.debug_aranges) }
|
||
|
|
.debug_pubnames 0 : { *(.debug_pubnames) }
|
||
|
|
.debug_info 0 : { *(.debug_info) }
|
||
|
|
.debug_abbrev 0 : { *(.debug_abbrev) }
|
||
|
|
.debug_line 0 : { *(.debug_line) }
|
||
|
|
.debug_frame 0 : { *(.debug_frame) }
|
||
|
|
.debug_str 0 : { *(.debug_str) }
|
||
|
|
.debug_loc 0 : { *(.debug_loc) }
|
||
|
|
.debug_macinfo 0 : { *(.debug_macinfo) }
|
||
|
|
.debug_weaknames 0 : { *(.debug_weaknames) }
|
||
|
|
.debug_funcnames 0 : { *(.debug_funcnames) }
|
||
|
|
.debug_typenames 0 : { *(.debug_typenames) }
|
||
|
|
.debug_varnames 0 : { *(.debug_varnames) }
|
||
|
|
|
||
|
|
.xt.insn 0 :
|
||
|
|
{
|
||
|
|
*(.xt.insn)
|
||
|
|
*(.gnu.linkonce.x*)
|
||
|
|
}
|
||
|
|
|
||
|
|
.xt.lit 0 :
|
||
|
|
{
|
||
|
|
*(.xt.lit)
|
||
|
|
*(.gnu.linkonce.p*)
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Sections to be discarded */
|
||
|
|
DISCARDS
|
||
|
|
/DISCARD/ : { *(.exit.literal) }
|
||
|
|
}
|