forked from luck/tmp_suning_uos_patched
cfa9a775b9
_start is setup to physical kernel start address. This caused that when you load vmlinux (with MMU kernel) via XMD program counter (pc) is setup correctly and then you can write con and start kernel. Signed-off-by: Michal Simek <monstr@monstr.eu>
150 lines
3.1 KiB
ArmAsm
150 lines
3.1 KiB
ArmAsm
/*
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* Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2008-2009 PetaLogix
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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OUTPUT_FORMAT("elf32-microblaze", "elf32-microblaze", "elf32-microblaze")
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OUTPUT_ARCH(microblaze)
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ENTRY(_start)
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#include <asm/page.h>
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#include <asm-generic/vmlinux.lds.h>
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#include <asm/thread_info.h>
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jiffies = jiffies_64 + 4;
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SECTIONS {
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. = CONFIG_KERNEL_START;
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_start = CONFIG_KERNEL_BASE_ADDR;
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.text : AT(ADDR(.text) - LOAD_OFFSET) {
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_text = . ;
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_stext = . ;
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*(.text .text.*)
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*(.fixup)
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EXIT_TEXT
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EXIT_CALL
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SCHED_TEXT
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LOCK_TEXT
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KPROBES_TEXT
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. = ALIGN (4) ;
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_etext = . ;
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}
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. = ALIGN (4) ;
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__fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET) {
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_fdt_start = . ; /* place for fdt blob */
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*(__fdt_blob) ; /* Any link-placed DTB */
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. = _fdt_start + 0x4000; /* Pad up to 16kbyte */
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_fdt_end = . ;
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}
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. = ALIGN(16);
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RODATA
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EXCEPTION_TABLE(16)
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/*
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* sdata2 section can go anywhere, but must be word aligned
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* and SDA2_BASE must point to the middle of it
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*/
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.sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {
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_ssrw = .;
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. = ALIGN(4096); /* page aligned when MMU used - origin 0x8 */
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*(.sdata2)
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. = ALIGN(8);
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_essrw = .;
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_ssrw_size = _essrw - _ssrw;
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_KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2);
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}
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_sdata = . ;
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RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
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_edata = . ;
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/* Reserve some low RAM for r0 based memory references */
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. = ALIGN(0x4) ;
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r0_ram = . ;
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. = . + 4096; /* a page should be enough */
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/* Under the microblaze ABI, .sdata and .sbss must be contiguous */
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. = ALIGN(8);
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.sdata : AT(ADDR(.sdata) - LOAD_OFFSET) {
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_ssro = .;
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*(.sdata)
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}
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.sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {
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_ssbss = .;
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*(.sbss)
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_esbss = .;
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_essro = .;
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_ssro_size = _essro - _ssro ;
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_KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
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}
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__init_begin = .;
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INIT_TEXT_SECTION(PAGE_SIZE)
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.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
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INIT_DATA
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}
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. = ALIGN(4);
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.init.ivt : AT(ADDR(.init.ivt) - LOAD_OFFSET) {
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__ivt_start = .;
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*(.init.ivt)
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__ivt_end = .;
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}
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.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
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INIT_SETUP(0)
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}
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.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET ) {
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INIT_CALLS
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}
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.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
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CON_INITCALL
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}
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SECURITY_INIT
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__init_end_before_initramfs = .;
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.init.ramfs ALIGN(4096) : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
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__initramfs_start = .;
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*(.init.ramfs)
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__initramfs_end = .;
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. = ALIGN(4);
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LONG(0);
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/*
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* FIXME this can break initramfs for MMU.
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* Pad init.ramfs up to page boundary,
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* so that __init_end == __bss_start. This will make image.elf
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* consistent with the image.bin
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*/
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/* . = ALIGN(4096); */
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}
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__init_end = .;
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.bss ALIGN (4096) : AT(ADDR(.bss) - LOAD_OFFSET) {
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/* page aligned when MMU used */
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__bss_start = . ;
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*(.bss*)
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*(COMMON)
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. = ALIGN (4) ;
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__bss_stop = . ;
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_ebss = . ;
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}
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. = ALIGN(4096);
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_end = .;
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DISCARDS
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}
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