/* * 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> */ #define RO_EXCEPTION_TABLE_ALIGN	16 #include <asm-generic/vmlinux.lds.h>#include <asm/page.h>#include <asm/thread_info.h> #include <asm/core.h>#include <asm/vectors.h> OUTPUT_ARCH(xtensa)ENTRY(_start) #ifdef __XTENSA_EB__jiffies = jiffies_64 + 4;#elsejiffies = jiffies_64;#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)) #if !defined(CONFIG_VECTORS_ADDR) && XCHAL_HAVE_VECBASE#define MERGED_VECTORS 1#else#define MERGED_VECTORS 0#endif /* * Macro to define a section for a vector. When MERGED_VECTORS is 0 * code for every vector is located with other init data. At startup * time head.S copies code for every vector to its final position according * to description recorded in the corresponding RELOCATE_ENTRY. */ #define SECTION_VECTOR4(sym, section, addr, prevsec)			    \  section addr : AT(((LOADADDR(prevsec) + SIZEOF(prevsec)) + 3) & ~ 3)      \  {									    \    . = ALIGN(4);							    \    sym ## _start = ABSOLUTE(.);		 			    \    *(section)								    \    sym ## _end = ABSOLUTE(.);						    \  } #define SECTION_VECTOR2(section, addr)					    \  . = addr;								    \  *(section) /* *  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 #if MERGED_VECTORS    . = ALIGN(PAGE_SIZE);    _vecbase = .;     SECTION_VECTOR2 (.WindowVectors.text, WINDOW_VECTORS_VADDR)#if XCHAL_EXCM_LEVEL >= 2    SECTION_VECTOR2 (.Level2InterruptVector.text, INTLEVEL2_VECTOR_VADDR)#endif#if XCHAL_EXCM_LEVEL >= 3    SECTION_VECTOR2 (.Level3InterruptVector.text, INTLEVEL3_VECTOR_VADDR)#endif#if XCHAL_EXCM_LEVEL >= 4    SECTION_VECTOR2 (.Level4InterruptVector.text, INTLEVEL4_VECTOR_VADDR)#endif#if XCHAL_EXCM_LEVEL >= 5    SECTION_VECTOR2 (.Level5InterruptVector.text, INTLEVEL5_VECTOR_VADDR)#endif#if XCHAL_EXCM_LEVEL >= 6    SECTION_VECTOR2 (.Level6InterruptVector.text, INTLEVEL6_VECTOR_VADDR)#endif    SECTION_VECTOR2 (.DebugInterruptVector.text, DEBUG_VECTOR_VADDR)    SECTION_VECTOR2 (.KernelExceptionVector.text, KERNEL_VECTOR_VADDR)    SECTION_VECTOR2 (.UserExceptionVector.text, USER_VECTOR_VADDR)    SECTION_VECTOR2 (.DoubleExceptionVector.text, DOUBLEEXC_VECTOR_VADDR)     *(.exception.text)#endif     IRQENTRY_TEXT    SOFTIRQENTRY_TEXT    ENTRY_TEXT    TEXT_TEXT    SCHED_TEXT    CPUIDLE_TEXT    LOCK_TEXT    *(.fixup)  }  _etext = .;  PROVIDE (etext = .);   . = ALIGN(16);   RO_DATA(4096)   /* Data section */ #ifdef CONFIG_XIP_KERNEL  INIT_TEXT_SECTION(PAGE_SIZE)#else  _sdata = .;  RW_DATA(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  }#endif   .init.rodata :  {    . = ALIGN(0x4);    __tagtable_begin = .;    *(.taglist)    __tagtable_end = .;     . = ALIGN(16);    __boot_reloc_table_start = ABSOLUTE(.); #if !MERGED_VECTORS    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_text,		   .DoubleExceptionVector.text);    RELOCATE_ENTRY(_DebugInterruptVector_text,		   .DebugInterruptVector.text);    RELOCATE_ENTRY(_exception_text,		   .exception.text);#endif#ifdef CONFIG_XIP_KERNEL    RELOCATE_ENTRY(_xip_data, .data);    RELOCATE_ENTRY(_xip_init_data, .init.data);#endif#if defined(CONFIG_SMP)    RELOCATE_ENTRY(_SecondaryResetVector_text,		   .SecondaryResetVector.text);#endif     __boot_reloc_table_end = ABSOLUTE(.) ;     INIT_SETUP(XCHAL_ICACHE_LINESIZE)    INIT_CALLS    CON_INITCALL    INIT_RAM_FS  }   PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)   /* We need this dummy segment here */   . = ALIGN(4);  .dummy : { LONG(0) } #undef LAST#define LAST	.dummy #if !MERGED_VECTORS  /* The vectors are relocated to the real position at startup time */   SECTION_VECTOR4 (_WindowVectors_text,		  .WindowVectors.text,		  WINDOW_VECTORS_VADDR,		  .dummy)  SECTION_VECTOR4 (_DebugInterruptVector_text,		  .DebugInterruptVector.text,		  DEBUG_VECTOR_VADDR,		  .WindowVectors.text)#undef LAST#define LAST	.DebugInterruptVector.text#if XCHAL_EXCM_LEVEL >= 2  SECTION_VECTOR4 (_Level2InterruptVector_text,		  .Level2InterruptVector.text,		  INTLEVEL2_VECTOR_VADDR,		  LAST)# undef LAST# define LAST	.Level2InterruptVector.text#endif#if XCHAL_EXCM_LEVEL >= 3  SECTION_VECTOR4 (_Level3InterruptVector_text,		  .Level3InterruptVector.text,		  INTLEVEL3_VECTOR_VADDR,		  LAST)# undef LAST# define LAST	.Level3InterruptVector.text#endif#if XCHAL_EXCM_LEVEL >= 4  SECTION_VECTOR4 (_Level4InterruptVector_text,		  .Level4InterruptVector.text,		  INTLEVEL4_VECTOR_VADDR,		  LAST)# undef LAST# define LAST	.Level4InterruptVector.text#endif#if XCHAL_EXCM_LEVEL >= 5  SECTION_VECTOR4 (_Level5InterruptVector_text,		  .Level5InterruptVector.text,		  INTLEVEL5_VECTOR_VADDR,		  LAST)# undef LAST# define LAST	.Level5InterruptVector.text#endif#if XCHAL_EXCM_LEVEL >= 6  SECTION_VECTOR4 (_Level6InterruptVector_text,		  .Level6InterruptVector.text,		  INTLEVEL6_VECTOR_VADDR,		  LAST)# undef LAST# define LAST	.Level6InterruptVector.text#endif  SECTION_VECTOR4 (_KernelExceptionVector_text,		  .KernelExceptionVector.text,		  KERNEL_VECTOR_VADDR,		  LAST)#undef LAST  SECTION_VECTOR4 (_UserExceptionVector_text,		  .UserExceptionVector.text,		  USER_VECTOR_VADDR,		  .KernelExceptionVector.text)  SECTION_VECTOR4 (_DoubleExceptionVector_text,		  .DoubleExceptionVector.text,		  DOUBLEEXC_VECTOR_VADDR,		  .UserExceptionVector.text)#define LAST .DoubleExceptionVector.text #endif#if defined(CONFIG_SMP)   SECTION_VECTOR4 (_SecondaryResetVector_text,		  .SecondaryResetVector.text,		  RESET_VECTOR1_VADDR,		  LAST)#undef LAST#define LAST .SecondaryResetVector.text #endif#if !MERGED_VECTORS  SECTION_VECTOR4 (_exception_text,		  .exception.text,		  ,		  LAST)#undef LAST#define LAST .exception.text #endif  . = (LOADADDR(LAST) + SIZEOF(LAST) + 3) & ~ 3;   .dummy1 : AT(ADDR(.dummy1)) { LONG(0) }  . = ALIGN(PAGE_SIZE); #ifndef CONFIG_XIP_KERNEL  __init_end = .;   BSS_SECTION(0, 8192, 0)#endif   _end = .; #ifdef CONFIG_XIP_KERNEL  . = CONFIG_XIP_DATA_ADDR;   _xip_start = .; #undef LOAD_OFFSET#define LOAD_OFFSET \  (CONFIG_XIP_DATA_ADDR - (LOADADDR(.dummy1) + SIZEOF(.dummy1) + 3) & ~ 3)   _xip_data_start = .;  _sdata = .;  RW_DATA(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)  _edata = .;  _xip_data_end = .;   /* Initialization data: */   STRUCT_ALIGN();   _xip_init_data_start = .;  __init_begin = .;  .init.data :  {    INIT_DATA  }  _xip_init_data_end = .;  __init_end = .;  BSS_SECTION(0, 8192, 0)   _xip_end = .; #undef LOAD_OFFSET#endif   DWARF_DEBUG   .xt.prop 0 : { KEEP(*(.xt.prop .xt.prop.* .gnu.linkonce.prop.*)) }  .xt.insn 0 : { KEEP(*(.xt.insn .xt.insn.* .gnu.linkonce.x*)) }  .xt.lit  0 : { KEEP(*(.xt.lit  .xt.lit.*  .gnu.linkonce.p*)) }   /* Sections to be discarded */  DISCARDS}