mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 04:11:49 +00:00
366234f657
We can set LOAD_OFFSET and use the AT attribute on sections and the linker will properly set the physical address of the LOAD program header for us. This allows us to know how the PHYSICAL_START the user configured a kernel with by just looking at the resulting vmlinux ELF. This is pretty much stolen from how x86 does things in their linker scripts. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
250 lines
4.4 KiB
ArmAsm
250 lines
4.4 KiB
ArmAsm
#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>
|
|
|
|
ENTRY(_stext)
|
|
|
|
#ifdef CONFIG_PPC64
|
|
OUTPUT_ARCH(powerpc:common64)
|
|
jiffies = jiffies_64;
|
|
#else
|
|
OUTPUT_ARCH(powerpc:common)
|
|
jiffies = jiffies_64 + 4;
|
|
#endif
|
|
SECTIONS
|
|
{
|
|
/* Sections to be discarded. */
|
|
/DISCARD/ : {
|
|
*(.exitcall.exit)
|
|
EXIT_DATA
|
|
}
|
|
|
|
. = KERNELBASE;
|
|
|
|
/*
|
|
* Text, read only data and other permanent read-only sections
|
|
*/
|
|
|
|
/* Text and gots */
|
|
.text : AT(ADDR(.text) - LOAD_OFFSET) {
|
|
ALIGN_FUNCTION();
|
|
*(.text.head)
|
|
_text = .;
|
|
*(.text .fixup .text.init.refok .exit.text.refok)
|
|
SCHED_TEXT
|
|
LOCK_TEXT
|
|
KPROBES_TEXT
|
|
|
|
#ifdef CONFIG_PPC32
|
|
*(.got1)
|
|
__got2_start = .;
|
|
*(.got2)
|
|
__got2_end = .;
|
|
#endif /* CONFIG_PPC32 */
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
_etext = .;
|
|
PROVIDE32 (etext = .);
|
|
}
|
|
|
|
/* Read-only data */
|
|
RODATA
|
|
|
|
/* Exception & bug tables */
|
|
__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
|
|
__start___ex_table = .;
|
|
*(__ex_table)
|
|
__stop___ex_table = .;
|
|
}
|
|
|
|
NOTES
|
|
|
|
BUG_TABLE
|
|
|
|
/*
|
|
* Init sections discarded at runtime
|
|
*/
|
|
. = ALIGN(PAGE_SIZE);
|
|
__init_begin = .;
|
|
|
|
.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
|
|
_sinittext = .;
|
|
INIT_TEXT
|
|
_einittext = .;
|
|
}
|
|
|
|
/* .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 = .;
|
|
#ifdef CONFIG_PPC_ISERIES
|
|
__dt_strings_start = .;
|
|
*(.dt_strings);
|
|
__dt_strings_end = .;
|
|
#endif
|
|
}
|
|
|
|
. = ALIGN(16);
|
|
.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
|
|
__setup_start = .;
|
|
*(.init.setup)
|
|
__setup_end = .;
|
|
}
|
|
|
|
.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
|
|
__initcall_start = .;
|
|
INITCALLS
|
|
__initcall_end = .;
|
|
}
|
|
|
|
.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
|
|
__con_initcall_start = .;
|
|
*(.con_initcall.init)
|
|
__con_initcall_end = .;
|
|
}
|
|
|
|
SECURITY_INIT
|
|
|
|
. = ALIGN(8);
|
|
__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
|
|
__start___ftr_fixup = .;
|
|
*(__ftr_fixup)
|
|
__stop___ftr_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
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
. = ALIGN(PAGE_SIZE);
|
|
.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
|
|
__initramfs_start = .;
|
|
*(.init.ramfs)
|
|
__initramfs_end = .;
|
|
}
|
|
#endif
|
|
. = ALIGN(PAGE_SIZE);
|
|
.data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
|
|
__per_cpu_start = .;
|
|
*(.data.percpu)
|
|
*(.data.percpu.shared_aligned)
|
|
__per_cpu_end = .;
|
|
}
|
|
|
|
. = ALIGN(8);
|
|
.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
|
|
__machine_desc_start = . ;
|
|
*(.machine.desc)
|
|
__machine_desc_end = . ;
|
|
}
|
|
|
|
/* 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)
|
|
}
|
|
|
|
.got : AT(ADDR(.got) - LOAD_OFFSET) {
|
|
__toc_start = .;
|
|
*(.got)
|
|
*(.toc)
|
|
}
|
|
#endif
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
_edata = .;
|
|
PROVIDE32 (edata = .);
|
|
|
|
/* The initial task and kernel stack */
|
|
#ifdef CONFIG_PPC32
|
|
. = ALIGN(8192);
|
|
#else
|
|
. = ALIGN(16384);
|
|
#endif
|
|
.data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
|
|
*(.data.init_task)
|
|
}
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
.data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
|
|
*(.data.page_aligned)
|
|
}
|
|
|
|
.data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
|
|
*(.data.cacheline_aligned)
|
|
}
|
|
|
|
. = ALIGN(L1_CACHE_BYTES);
|
|
.data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
|
|
*(.data.read_mostly)
|
|
}
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
|
|
__nosave_begin = .;
|
|
*(.data.nosave)
|
|
. = ALIGN(PAGE_SIZE);
|
|
__nosave_end = .;
|
|
}
|
|
|
|
/*
|
|
* And finally the bss
|
|
*/
|
|
|
|
.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
|
|
__bss_start = .;
|
|
*(.sbss) *(.scommon)
|
|
*(.dynbss)
|
|
*(.bss)
|
|
*(COMMON)
|
|
__bss_stop = .;
|
|
}
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
_end = . ;
|
|
PROVIDE32 (end = .);
|
|
}
|