2007-10-11 05:14:21 -04:00
|
|
|
/* ld script to make x86-64 Linux kernel
|
|
|
|
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define LOAD_OFFSET __START_KERNEL_map
|
|
|
|
|
|
|
|
#include <asm-generic/vmlinux.lds.h>
|
|
|
|
#include <asm/page.h>
|
|
|
|
|
|
|
|
#undef i386 /* in case the preprocessor is a 32bit one */
|
|
|
|
|
|
|
|
OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
|
|
|
|
OUTPUT_ARCH(i386:x86-64)
|
|
|
|
ENTRY(phys_startup_64)
|
|
|
|
jiffies_64 = jiffies;
|
|
|
|
_proxy_pda = 1;
|
|
|
|
PHDRS {
|
|
|
|
text PT_LOAD FLAGS(5); /* R_E */
|
|
|
|
data PT_LOAD FLAGS(7); /* RWE */
|
|
|
|
user PT_LOAD FLAGS(7); /* RWE */
|
|
|
|
data.init PT_LOAD FLAGS(7); /* RWE */
|
2008-05-12 09:44:41 -04:00
|
|
|
note PT_NOTE FLAGS(0); /* ___ */
|
2007-10-11 05:14:21 -04:00
|
|
|
}
|
|
|
|
SECTIONS
|
|
|
|
{
|
|
|
|
. = __START_KERNEL;
|
|
|
|
phys_startup_64 = startup_64 - LOAD_OFFSET;
|
|
|
|
_text = .; /* Text and read-only data */
|
|
|
|
.text : AT(ADDR(.text) - LOAD_OFFSET) {
|
|
|
|
/* First the code that has to be first for bootstrapping */
|
|
|
|
*(.text.head)
|
|
|
|
_stext = .;
|
|
|
|
/* Then the rest */
|
|
|
|
TEXT_TEXT
|
|
|
|
SCHED_TEXT
|
|
|
|
LOCK_TEXT
|
|
|
|
KPROBES_TEXT
|
|
|
|
*(.fixup)
|
|
|
|
*(.gnu.warning)
|
2008-02-17 10:17:17 -05:00
|
|
|
_etext = .; /* End of text section */
|
2008-01-30 07:33:14 -05:00
|
|
|
} :text = 0x9090
|
2007-10-11 05:14:21 -04:00
|
|
|
|
2008-05-12 09:44:41 -04:00
|
|
|
NOTES :text :note
|
|
|
|
|
2007-10-11 05:14:21 -04:00
|
|
|
. = ALIGN(16); /* Exception table */
|
2008-01-30 07:33:14 -05:00
|
|
|
__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
|
|
|
|
__start___ex_table = .;
|
|
|
|
*(__ex_table)
|
|
|
|
__stop___ex_table = .;
|
2008-05-12 09:44:41 -04:00
|
|
|
} :text = 0x9090
|
2007-10-11 05:14:21 -04:00
|
|
|
|
|
|
|
RODATA
|
|
|
|
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE); /* Align data segment to page size boundary */
|
2007-10-11 05:14:21 -04:00
|
|
|
/* Data */
|
|
|
|
.data : AT(ADDR(.data) - LOAD_OFFSET) {
|
|
|
|
DATA_DATA
|
|
|
|
CONSTRUCTORS
|
|
|
|
} :data
|
|
|
|
|
|
|
|
_edata = .; /* End of data section */
|
|
|
|
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
|
|
. = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
|
|
|
|
.data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
|
|
|
|
*(.data.cacheline_aligned)
|
|
|
|
}
|
|
|
|
. = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES);
|
|
|
|
.data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
|
|
|
|
*(.data.read_mostly)
|
|
|
|
}
|
|
|
|
|
|
|
|
#define VSYSCALL_ADDR (-10*1024*1024)
|
|
|
|
#define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
|
|
|
|
#define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
|
|
|
|
|
|
|
|
#define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
|
|
|
|
#define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
|
|
|
|
|
|
|
|
#define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR)
|
|
|
|
#define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
|
|
|
|
|
|
|
|
. = VSYSCALL_ADDR;
|
|
|
|
.vsyscall_0 : AT(VSYSCALL_PHYS_ADDR) { *(.vsyscall_0) } :user
|
|
|
|
__vsyscall_0 = VSYSCALL_VIRT_ADDR;
|
|
|
|
|
|
|
|
. = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
|
|
|
|
.vsyscall_fn : AT(VLOAD(.vsyscall_fn)) { *(.vsyscall_fn) }
|
|
|
|
. = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
|
|
|
|
.vsyscall_gtod_data : AT(VLOAD(.vsyscall_gtod_data))
|
|
|
|
{ *(.vsyscall_gtod_data) }
|
|
|
|
vsyscall_gtod_data = VVIRT(.vsyscall_gtod_data);
|
|
|
|
.vsyscall_clock : AT(VLOAD(.vsyscall_clock))
|
|
|
|
{ *(.vsyscall_clock) }
|
|
|
|
vsyscall_clock = VVIRT(.vsyscall_clock);
|
|
|
|
|
|
|
|
|
|
|
|
.vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1))
|
|
|
|
{ *(.vsyscall_1) }
|
|
|
|
.vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2))
|
|
|
|
{ *(.vsyscall_2) }
|
|
|
|
|
|
|
|
.vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) }
|
|
|
|
vgetcpu_mode = VVIRT(.vgetcpu_mode);
|
|
|
|
|
|
|
|
. = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
|
|
|
|
.jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) }
|
|
|
|
jiffies = VVIRT(.jiffies);
|
|
|
|
|
|
|
|
.vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3))
|
|
|
|
{ *(.vsyscall_3) }
|
|
|
|
|
2008-02-17 10:17:17 -05:00
|
|
|
. = VSYSCALL_VIRT_ADDR + PAGE_SIZE;
|
2007-10-11 05:14:21 -04:00
|
|
|
|
|
|
|
#undef VSYSCALL_ADDR
|
|
|
|
#undef VSYSCALL_PHYS_ADDR
|
|
|
|
#undef VSYSCALL_VIRT_ADDR
|
|
|
|
#undef VLOAD_OFFSET
|
|
|
|
#undef VLOAD
|
|
|
|
#undef VVIRT_OFFSET
|
|
|
|
#undef VVIRT
|
|
|
|
|
2008-02-17 10:17:18 -05:00
|
|
|
. = ALIGN(THREAD_SIZE); /* init_task */
|
2007-10-11 05:14:21 -04:00
|
|
|
.data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
|
|
|
|
*(.data.init_task)
|
|
|
|
}:data.init
|
|
|
|
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE);
|
2007-10-11 05:14:21 -04:00
|
|
|
.data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
|
|
|
|
*(.data.page_aligned)
|
|
|
|
}
|
|
|
|
|
|
|
|
/* might get freed after init */
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE);
|
2007-10-11 05:14:21 -04:00
|
|
|
__smp_alt_begin = .;
|
|
|
|
__smp_locks = .;
|
|
|
|
.smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
|
|
|
|
*(.smp_locks)
|
|
|
|
}
|
|
|
|
__smp_locks_end = .;
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE);
|
2007-10-11 05:14:21 -04:00
|
|
|
__smp_alt_end = .;
|
|
|
|
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE); /* Init code and data */
|
2007-10-11 05:14:21 -04:00
|
|
|
__init_begin = .;
|
|
|
|
.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
|
|
|
|
_sinittext = .;
|
2008-01-20 08:15:03 -05:00
|
|
|
INIT_TEXT
|
2007-10-11 05:14:21 -04:00
|
|
|
_einittext = .;
|
|
|
|
}
|
2008-01-20 08:15:03 -05:00
|
|
|
.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
|
|
|
|
__initdata_begin = .;
|
|
|
|
INIT_DATA
|
|
|
|
__initdata_end = .;
|
|
|
|
}
|
|
|
|
|
2007-10-11 05:14:21 -04:00
|
|
|
. = ALIGN(16);
|
|
|
|
__setup_start = .;
|
|
|
|
.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) }
|
|
|
|
__setup_end = .;
|
|
|
|
__initcall_start = .;
|
|
|
|
.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
|
|
|
|
INITCALLS
|
|
|
|
}
|
|
|
|
__initcall_end = .;
|
|
|
|
__con_initcall_start = .;
|
|
|
|
.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
|
|
|
|
*(.con_initcall.init)
|
|
|
|
}
|
|
|
|
__con_initcall_end = .;
|
2008-06-19 18:30:31 -04:00
|
|
|
. = ALIGN(16);
|
x86: use ELF section to list CPU vendor specific code
Replace the hardcoded list of initialization functions for each CPU
vendor by a list in an ELF section, which is read at initialization in
arch/x86/kernel/cpu/cpu.c to fill the cpu_devs[] array. The ELF
section, named .x86cpuvendor.init, is reclaimed after boot, and
contains entries of type "struct cpu_vendor_dev" which associates a
vendor number with a pointer to a "struct cpu_dev" structure.
This first modification allows to remove all the VENDOR_init_cpu()
functions.
This patch also removes the hardcoded calls to early_init_amd() and
early_init_intel(). Instead, we add a "c_early_init" member to the
cpu_dev structure, which is then called if not NULL by the generic CPU
initialization code. Unfortunately, in early_cpu_detect(), this_cpu is
not yet set, so we have to use the cpu_devs[] array directly.
This patch is part of the Linux Tiny project, and is needed for
further patch that will allow to disable compilation of unused CPU
support code.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-15 06:00:23 -05:00
|
|
|
__x86cpuvendor_start = .;
|
|
|
|
.x86cpuvendor.init : AT(ADDR(.x86cpuvendor.init) - LOAD_OFFSET) {
|
|
|
|
*(.x86cpuvendor.init)
|
|
|
|
}
|
|
|
|
__x86cpuvendor_end = .;
|
2007-10-11 05:14:21 -04:00
|
|
|
SECURITY_INIT
|
2008-01-30 07:33:19 -05:00
|
|
|
|
|
|
|
. = ALIGN(8);
|
|
|
|
.parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
|
|
|
|
__parainstructions = .;
|
|
|
|
*(.parainstructions)
|
|
|
|
__parainstructions_end = .;
|
|
|
|
}
|
|
|
|
|
2007-10-11 05:14:21 -04:00
|
|
|
. = ALIGN(8);
|
|
|
|
__alt_instructions = .;
|
|
|
|
.altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
|
|
|
|
*(.altinstructions)
|
|
|
|
}
|
2008-02-17 10:17:17 -05:00
|
|
|
__alt_instructions_end = .;
|
2007-10-11 05:14:21 -04:00
|
|
|
.altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
|
|
|
|
*(.altinstr_replacement)
|
|
|
|
}
|
|
|
|
/* .exit.text is discard at runtime, not link time, to deal with references
|
|
|
|
from .altinstructions and .eh_frame */
|
2008-01-20 08:15:03 -05:00
|
|
|
.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
|
|
|
|
EXIT_TEXT
|
|
|
|
}
|
|
|
|
.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
|
|
|
|
EXIT_DATA
|
|
|
|
}
|
2007-10-11 05:14:21 -04:00
|
|
|
|
|
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE);
|
2007-10-11 05:14:21 -04:00
|
|
|
__initramfs_start = .;
|
|
|
|
.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
|
|
|
|
__initramfs_end = .;
|
|
|
|
#endif
|
|
|
|
|
2008-02-17 10:17:17 -05:00
|
|
|
PERCPU(PAGE_SIZE)
|
2007-10-11 05:14:21 -04:00
|
|
|
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE);
|
2007-10-11 05:14:21 -04:00
|
|
|
__init_end = .;
|
|
|
|
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE);
|
2007-10-11 05:14:21 -04:00
|
|
|
__nosave_begin = .;
|
|
|
|
.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) }
|
2008-02-17 10:17:17 -05:00
|
|
|
. = ALIGN(PAGE_SIZE);
|
2007-10-11 05:14:21 -04:00
|
|
|
__nosave_end = .;
|
|
|
|
|
|
|
|
__bss_start = .; /* BSS */
|
|
|
|
.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
|
|
|
|
*(.bss.page_aligned)
|
|
|
|
*(.bss)
|
|
|
|
}
|
|
|
|
__bss_stop = .;
|
|
|
|
|
|
|
|
_end = . ;
|
|
|
|
|
|
|
|
/* Sections to be discarded */
|
|
|
|
/DISCARD/ : {
|
|
|
|
*(.exitcall.exit)
|
|
|
|
*(.eh_frame)
|
|
|
|
}
|
|
|
|
|
|
|
|
STABS_DEBUG
|
|
|
|
|
|
|
|
DWARF_DEBUG
|
|
|
|
}
|
2008-02-21 07:45:16 -05:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Build-time check on the image size:
|
|
|
|
*/
|
|
|
|
ASSERT((_end - _text <= KERNEL_IMAGE_SIZE),
|
|
|
|
"kernel image bigger than KERNEL_IMAGE_SIZE")
|