#ifdef CONFIG_PPC64#define PROVIDE32(x) PROVIDE(__unused__##x)#else#define PROVIDE32(x) PROVIDE(x)#endif#include <asm/page.h>#include <asm-generic/vmlinux.lds.h>#include <asm/cache.h>#include <asm/thread_info.h>ENTRY(_stext)PHDRS { kernel PT_LOAD FLAGS(7); /* RWX */ notes PT_NOTE FLAGS(0); dummy PT_NOTE FLAGS(0); /* binutils < 2.18 has a bug that makes it misbehave when taking an ELF file with all segments at load address 0 as input. This happens when running "strip" on vmlinux, because of the AT() magic in this linker script. People using GCC >= 4.2 won't run into this problem, because the "build-id" support will put some data into the "notes" segment (at a non-zero load address). To work around this, we force some data into both the "dummy" segment and the kernel segment, so the dummy segment will get a non-zero load address. It's not enough to always create the "notes" segment, since if nothing gets assigned to it, its load address will be zero. */}#ifdef CONFIG_PPC64OUTPUT_ARCH(powerpc:common64)jiffies = jiffies_64;#elseOUTPUT_ARCH(powerpc:common)jiffies = jiffies_64 + 4;#endifSECTIONS{ . = KERNELBASE;/* * Text, read only data and other permanent read-only sections */ _text = .; _stext = .; /* * Head text. * This needs to be in its own output section to avoid ld placing * branch trampoline stubs randomly throughout the fixed sections, * which it will do (even if the branch comes from another section) * in order to optimize stub generation. */ .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {#ifdef CONFIG_PPC64 KEEP(*(.head.text.first_256B));#ifdef CONFIG_PPC_BOOK3E# define END_FIXED 0x100#else KEEP(*(.head.text.real_vectors)); *(.head.text.real_trampolines); KEEP(*(.head.text.virt_vectors)); *(.head.text.virt_trampolines);# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) KEEP(*(.head.data.fwnmi_page));# define END_FIXED 0x8000# else# define END_FIXED 0x7000# endif#endif ASSERT((. == END_FIXED), "vmlinux.lds.S: fixed section overflow error");#else /* !CONFIG_PPC64 */ HEAD_TEXT#endif } :kernel /* * If the build dies here, it's likely code in head_64.S is referencing * labels it can't reach, and the linker inserting stubs without the * assembler's knowledge. To debug, remove the above assert and * rebuild. Look for branch stubs in the fixed section region. * * Linker stub generation could be allowed in "trampoline" * sections if absolutely necessary, but this would require * some rework of the fixed sections. Before resorting to this, * consider references that have sufficient addressing range, * (e.g., hand coded trampolines) so the linker does not have * to add stubs. * * Linker stubs at the top of the main text section are currently not * detected, and will result in a crash at boot due to offsets being * wrong. */#ifdef CONFIG_PPC64 /* * BLOCK(0) overrides the default output section alignment because * this needs to start right after .head.text in order for fixed * section placement to work. */ .text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) {#else .text : AT(ADDR(.text) - LOAD_OFFSET) { ALIGN_FUNCTION();#endif /* careful! __ftr_alt_* sections need to be close to .text */ *(.text .fixup __ftr_alt_* .ref.text) SCHED_TEXT CPUIDLE_TEXT LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT SOFTIRQENTRY_TEXT MEM_KEEP(init.text) MEM_KEEP(exit.text)#ifdef CONFIG_PPC32 *(.got1) __got2_start = .; *(.got2) __got2_end = .;#endif /* CONFIG_PPC32 */ } :kernel . = ALIGN(PAGE_SIZE); _etext = .; PROVIDE32 (etext = .); /* Read-only data */ RODATA EXCEPTION_TABLE(0) NOTES :kernel :notes /* The dummy segment contents for the bug workaround mentioned above near PHDRS. */ .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) { LONG(0) LONG(0) LONG(0) } :kernel :dummy/* * Init sections discarded at runtime */ . = ALIGN(PAGE_SIZE); __init_begin = .; INIT_TEXT_SECTION(PAGE_SIZE) :kernel /* .exit.text is discarded at runtime, not link time, * to deal with references from __bug_table */ .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { EXIT_TEXT } .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { INIT_DATA __vtop_table_begin = .; *(.vtop_fixup); __vtop_table_end = .; __ptov_table_begin = .; *(.ptov_fixup); __ptov_table_end = .; } .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { INIT_SETUP(16) } .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) { INIT_CALLS } .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { CON_INITCALL } SECURITY_INIT . = ALIGN(8); __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { __start___ftr_fixup = .; *(__ftr_fixup) __stop___ftr_fixup = .; } . = ALIGN(8); __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { __start___mmu_ftr_fixup = .; *(__mmu_ftr_fixup) __stop___mmu_ftr_fixup = .; } . = ALIGN(8); __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { __start___lwsync_fixup = .; *(__lwsync_fixup) __stop___lwsync_fixup = .; }#ifdef CONFIG_PPC64 . = ALIGN(8); __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { __start___fw_ftr_fixup = .; *(__fw_ftr_fixup) __stop___fw_ftr_fixup = .; }#endif .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { INIT_RAM_FS } PERCPU_SECTION(L1_CACHE_BYTES) . = ALIGN(8); .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { __machine_desc_start = . ; *(.machine.desc) __machine_desc_end = . ; }#ifdef CONFIG_RELOCATABLE . = ALIGN(8); .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) {#ifdef CONFIG_PPC32 __dynamic_symtab = .;#endif *(.dynsym) } .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) { __dynamic_start = .; *(.dynamic) } .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) { __rela_dyn_start = .; *(.rela*) }#endif /* .exit.data is discarded at runtime, not link time, * to deal with references from .exit.text */ .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { EXIT_DATA } /* freed after init ends here */ . = ALIGN(PAGE_SIZE); __init_end = .;/* * And now the various read/write data */ . = ALIGN(PAGE_SIZE); _sdata = .;#ifdef CONFIG_PPC32 .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA *(.sdata) *(.got.plt) *(.got) }#else .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA *(.data.rel*) *(.toc1) *(.branch_lt) } .opd : AT(ADDR(.opd) - LOAD_OFFSET) { *(.opd) } . = ALIGN(256); .got : AT(ADDR(.got) - LOAD_OFFSET) { __toc_start = .;#ifndef CONFIG_RELOCATABLE __prom_init_toc_start = .; arch/powerpc/kernel/prom_init.o*(.toc .got) __prom_init_toc_end = .;#endif *(.got) *(.toc) }#endif /* The initial task and kernel stack */ INIT_TASK_DATA_SECTION(THREAD_SIZE) .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) { PAGE_ALIGNED_DATA(PAGE_SIZE) } .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) { CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) } .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) { READ_MOSTLY_DATA(L1_CACHE_BYTES) } . = ALIGN(PAGE_SIZE); .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { NOSAVE_DATA } . = ALIGN(PAGE_SIZE); _edata = .; PROVIDE32 (edata = .);/* * And finally the bss */ BSS_SECTION(0, 0, 0) . = ALIGN(PAGE_SIZE); _end = . ; PROVIDE32 (end = .); /* Sections to be discarded. */ DISCARDS}
#ifdef CONFIG_PPC64
#define PROVIDE32(x) PROVIDE(__unused__##x)
#else
#define PROVIDE32(x) PROVIDE(x)
#endif
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
#include <asm/cache.h>
#include <asm/thread_info.h>
ENTRY(_stext)
PHDRS {
kernel PT_LOAD FLAGS(7); /* RWX */
notes PT_NOTE FLAGS(0);
dummy PT_NOTE FLAGS(0);
/* binutils < 2.18 has a bug that makes it misbehave when taking an
ELF file with all segments at load address 0 as input. This
happens when running "strip" on vmlinux, because of the AT() magic
in this linker script. People using GCC >= 4.2 won't run into
this problem, because the "build-id" support will put some data
into the "notes" segment (at a non-zero load address).
To work around this, we force some data into both the "dummy"
segment and the kernel segment, so the dummy segment will get a
non-zero load address. It's not enough to always create the
"notes" segment, since if nothing gets assigned to it, its load
address will be zero. */
}
#ifdef CONFIG_PPC64
OUTPUT_ARCH(powerpc:common64)
jiffies = jiffies_64;
#else
OUTPUT_ARCH(powerpc:common)
jiffies = jiffies_64 + 4;
#endif
SECTIONS
{
. = KERNELBASE;
/*
* Text, read only data and other permanent read-only sections
*/
_text = .;
_stext = .;
/*
* Head text.
* This needs to be in its own output section to avoid ld placing
* branch trampoline stubs randomly throughout the fixed sections,
* which it will do (even if the branch comes from another section)
* in order to optimize stub generation.
*/
.head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
#ifdef CONFIG_PPC64
KEEP(*(.head.text.first_256B));
#ifdef CONFIG_PPC_BOOK3E
# define END_FIXED 0x100
#else
KEEP(*(.head.text.real_vectors));
*(.head.text.real_trampolines);
KEEP(*(.head.text.virt_vectors));
*(.head.text.virt_trampolines);
# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
KEEP(*(.head.data.fwnmi_page));
# define END_FIXED 0x8000
# else
# define END_FIXED 0x7000
# endif
#endif
ASSERT((. == END_FIXED), "vmlinux.lds.S: fixed section overflow error");
#else /* !CONFIG_PPC64 */
HEAD_TEXT
#endif
} :kernel
/*
* If the build dies here, it's likely code in head_64.S is referencing
* labels it can't reach, and the linker inserting stubs without the
* assembler's knowledge. To debug, remove the above assert and
* rebuild. Look for branch stubs in the fixed section region.
*
* Linker stub generation could be allowed in "trampoline"
* sections if absolutely necessary, but this would require
* some rework of the fixed sections. Before resorting to this,
* consider references that have sufficient addressing range,
* (e.g., hand coded trampolines) so the linker does not have
* to add stubs.
*
* Linker stubs at the top of the main text section are currently not
* detected, and will result in a crash at boot due to offsets being
* wrong.
*/
#ifdef CONFIG_PPC64
/*
* BLOCK(0) overrides the default output section alignment because
* this needs to start right after .head.text in order for fixed
* section placement to work.
*/
.text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) {
#else
.text : AT(ADDR(.text) - LOAD_OFFSET) {
ALIGN_FUNCTION();
#endif
/* careful! __ftr_alt_* sections need to be close to .text */
*(.text .fixup __ftr_alt_* .ref.text)
SCHED_TEXT
CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
MEM_KEEP(init.text)
MEM_KEEP(exit.text)
#ifdef CONFIG_PPC32
*(.got1)
__got2_start = .;
*(.got2)
__got2_end = .;
#endif /* CONFIG_PPC32 */
} :kernel
. = ALIGN(PAGE_SIZE);
_etext = .;
PROVIDE32 (etext = .);
/* Read-only data */
RODATA
EXCEPTION_TABLE(0)
NOTES :kernel :notes
/* The dummy segment contents for the bug workaround mentioned above
near PHDRS. */
.dummy : AT(ADDR(.dummy) - LOAD_OFFSET) {
LONG(0)
LONG(0)
LONG(0)
} :kernel :dummy
/*
* Init sections discarded at runtime
*/
. = ALIGN(PAGE_SIZE);
__init_begin = .;
INIT_TEXT_SECTION(PAGE_SIZE) :kernel
/* .exit.text is discarded at runtime, not link time,
* to deal with references from __bug_table
*/
.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
EXIT_TEXT
}
.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
INIT_DATA
__vtop_table_begin = .;
*(.vtop_fixup);
__vtop_table_end = .;
__ptov_table_begin = .;
*(.ptov_fixup);
__ptov_table_end = .;
}
.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
INIT_SETUP(16)
}
.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
INIT_CALLS
}
.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
CON_INITCALL
}
SECURITY_INIT
. = ALIGN(8);
__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
__start___ftr_fixup = .;
*(__ftr_fixup)
__stop___ftr_fixup = .;
}
. = ALIGN(8);
__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
__start___mmu_ftr_fixup = .;
*(__mmu_ftr_fixup)
__stop___mmu_ftr_fixup = .;
}
. = ALIGN(8);
__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
__start___lwsync_fixup = .;
*(__lwsync_fixup)
__stop___lwsync_fixup = .;
}
#ifdef CONFIG_PPC64
. = ALIGN(8);
__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
__start___fw_ftr_fixup = .;
*(__fw_ftr_fixup)
__stop___fw_ftr_fixup = .;
}
#endif
.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
INIT_RAM_FS
}
PERCPU_SECTION(L1_CACHE_BYTES)
. = ALIGN(8);
.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
__machine_desc_start = . ;
*(.machine.desc)
__machine_desc_end = . ;
}
#ifdef CONFIG_RELOCATABLE
. = ALIGN(8);
.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
{
#ifdef CONFIG_PPC32
__dynamic_symtab = .;
#endif
*(.dynsym)
}
.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
.dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
{
__dynamic_start = .;
*(.dynamic)
}
.hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
.interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
.rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
{
__rela_dyn_start = .;
*(.rela*)
}
#endif
/* .exit.data is discarded at runtime, not link time,
* to deal with references from .exit.text
*/
.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
EXIT_DATA
}
/* freed after init ends here */
. = ALIGN(PAGE_SIZE);
__init_end = .;
/*
* And now the various read/write data
*/
. = ALIGN(PAGE_SIZE);
_sdata = .;
#ifdef CONFIG_PPC32
.data : AT(ADDR(.data) - LOAD_OFFSET) {
DATA_DATA
*(.sdata)
*(.got.plt) *(.got)
}
#else
.data : AT(ADDR(.data) - LOAD_OFFSET) {
DATA_DATA
*(.data.rel*)
*(.toc1)
*(.branch_lt)
}
.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
*(.opd)
}
. = ALIGN(256);
.got : AT(ADDR(.got) - LOAD_OFFSET) {
__toc_start = .;
#ifndef CONFIG_RELOCATABLE
__prom_init_toc_start = .;
arch/powerpc/kernel/prom_init.o*(.toc .got)
__prom_init_toc_end = .;
#endif
*(.got)
*(.toc)
}
#endif
/* The initial task and kernel stack */
INIT_TASK_DATA_SECTION(THREAD_SIZE)
.data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
PAGE_ALIGNED_DATA(PAGE_SIZE)
}
.data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
}
.data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
READ_MOSTLY_DATA(L1_CACHE_BYTES)
}
. = ALIGN(PAGE_SIZE);
.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
NOSAVE_DATA
}
. = ALIGN(PAGE_SIZE);
_edata = .;
PROVIDE32 (edata = .);
/*
* And finally the bss
*/
BSS_SECTION(0, 0, 0)
. = ALIGN(PAGE_SIZE);
_end = . ;
PROVIDE32 (end = .);
/* Sections to be discarded. */
DISCARDS
}