345 строки
8.9 KiB
ArmAsm
345 строки
8.9 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 - 2008 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 <asm/vectors.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 0xd0003000
|
|
#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 = .;
|
|
|
|
.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 */
|
|
|
|
_sdata = .;
|
|
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);
|
|
#if XCHAL_EXCM_LEVEL >= 2
|
|
RELOCATE_ENTRY(_Level2InterruptVector_text,
|
|
.Level2InterruptVector.text);
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 3
|
|
RELOCATE_ENTRY(_Level3InterruptVector_text,
|
|
.Level3InterruptVector.text);
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 4
|
|
RELOCATE_ENTRY(_Level4InterruptVector_text,
|
|
.Level4InterruptVector.text);
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 5
|
|
RELOCATE_ENTRY(_Level5InterruptVector_text,
|
|
.Level5InterruptVector.text);
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 6
|
|
RELOCATE_ENTRY(_Level6InterruptVector_text,
|
|
.Level6InterruptVector.text);
|
|
#endif
|
|
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_SECTION(XCHAL_ICACHE_LINESIZE)
|
|
|
|
/* 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,
|
|
WINDOW_VECTORS_VADDR, 4,
|
|
.dummy)
|
|
SECTION_VECTOR (_DebugInterruptVector_literal,
|
|
.DebugInterruptVector.literal,
|
|
DEBUG_VECTOR_VADDR - 4,
|
|
SIZEOF(.WindowVectors.text),
|
|
.WindowVectors.text)
|
|
SECTION_VECTOR (_DebugInterruptVector_text,
|
|
.DebugInterruptVector.text,
|
|
DEBUG_VECTOR_VADDR,
|
|
4,
|
|
.DebugInterruptVector.literal)
|
|
#undef LAST
|
|
#define LAST .DebugInterruptVector.text
|
|
#if XCHAL_EXCM_LEVEL >= 2
|
|
SECTION_VECTOR (_Level2InterruptVector_text,
|
|
.Level2InterruptVector.text,
|
|
INTLEVEL2_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level2InterruptVector.text
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 3
|
|
SECTION_VECTOR (_Level3InterruptVector_text,
|
|
.Level3InterruptVector.text,
|
|
INTLEVEL3_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level3InterruptVector.text
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 4
|
|
SECTION_VECTOR (_Level4InterruptVector_text,
|
|
.Level4InterruptVector.text,
|
|
INTLEVEL4_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level4InterruptVector.text
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 5
|
|
SECTION_VECTOR (_Level5InterruptVector_text,
|
|
.Level5InterruptVector.text,
|
|
INTLEVEL5_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level5InterruptVector.text
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 6
|
|
SECTION_VECTOR (_Level6InterruptVector_text,
|
|
.Level6InterruptVector.text,
|
|
INTLEVEL6_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level6InterruptVector.text
|
|
#endif
|
|
SECTION_VECTOR (_KernelExceptionVector_literal,
|
|
.KernelExceptionVector.literal,
|
|
KERNEL_VECTOR_VADDR - 4,
|
|
SIZEOF(LAST), LAST)
|
|
#undef LAST
|
|
SECTION_VECTOR (_KernelExceptionVector_text,
|
|
.KernelExceptionVector.text,
|
|
KERNEL_VECTOR_VADDR,
|
|
4,
|
|
.KernelExceptionVector.literal)
|
|
SECTION_VECTOR (_UserExceptionVector_literal,
|
|
.UserExceptionVector.literal,
|
|
USER_VECTOR_VADDR - 4,
|
|
SIZEOF(.KernelExceptionVector.text),
|
|
.KernelExceptionVector.text)
|
|
SECTION_VECTOR (_UserExceptionVector_text,
|
|
.UserExceptionVector.text,
|
|
USER_VECTOR_VADDR,
|
|
4,
|
|
.UserExceptionVector.literal)
|
|
SECTION_VECTOR (_DoubleExceptionVector_literal,
|
|
.DoubleExceptionVector.literal,
|
|
DOUBLEEXC_VECTOR_VADDR - 16,
|
|
SIZEOF(.UserExceptionVector.text),
|
|
.UserExceptionVector.text)
|
|
SECTION_VECTOR (_DoubleExceptionVector_text,
|
|
.DoubleExceptionVector.text,
|
|
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) }
|
|
|
|
.ResetVector.text RESET_VECTOR_VADDR :
|
|
{
|
|
*(.ResetVector.text)
|
|
}
|
|
|
|
|
|
/*
|
|
* This is a remapped copy of the Secondary Reset Vector Code.
|
|
* It keeps gdb in sync with the PC after switching
|
|
* to the temporary mapping used while setting up
|
|
* the V2 MMU mappings for Linux.
|
|
*
|
|
* Only debug information about this section is put in the kernel image.
|
|
*/
|
|
.SecondaryResetVector.remapped_text 0x46000000 (INFO):
|
|
{
|
|
*(.SecondaryResetVector.remapped_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) }
|
|
}
|