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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