e98ff7f6d8
Since commit 2552fc27ff XIP kernels failed
to boot because (_end - PAGE_OFFSET - 1) is much smaller than the size
of the kernel text and data in the XIP case, causing the kernel not to
be entirely mapped.
Even in the non-XIP case, the use of (_end - PAGE_OFFSET - 1) is wrong
because it produces a too large value if TEXT_OFFSET is larger than 1MB.
Finally the original code was performing one loop too many.
Let's break the loop when the section pointer has passed the last byte
of the kernel instead.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
184 lines
3.5 KiB
ArmAsm
184 lines
3.5 KiB
ArmAsm
/* ld script to make ARM Linux kernel
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* taken from the i386 version by Russell King
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* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
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*/
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#include <asm-generic/vmlinux.lds.h>
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#include <asm/thread_info.h>
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#include <asm/memory.h>
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OUTPUT_ARCH(arm)
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ENTRY(stext)
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#ifndef __ARMEB__
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jiffies = jiffies_64;
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#else
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jiffies = jiffies_64 + 4;
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#endif
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SECTIONS
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{
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#ifdef CONFIG_XIP_KERNEL
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. = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);
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#else
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. = PAGE_OFFSET + TEXT_OFFSET;
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#endif
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.init : { /* Init code and data */
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_stext = .;
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_sinittext = .;
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*(.init.text)
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_einittext = .;
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__proc_info_begin = .;
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*(.proc.info.init)
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__proc_info_end = .;
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__arch_info_begin = .;
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*(.arch.info.init)
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__arch_info_end = .;
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__tagtable_begin = .;
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*(.taglist.init)
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__tagtable_end = .;
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. = ALIGN(16);
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__setup_start = .;
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*(.init.setup)
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__setup_end = .;
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__early_begin = .;
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*(.early_param.init)
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__early_end = .;
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__initcall_start = .;
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INITCALLS
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__initcall_end = .;
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__con_initcall_start = .;
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*(.con_initcall.init)
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__con_initcall_end = .;
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__security_initcall_start = .;
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*(.security_initcall.init)
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__security_initcall_end = .;
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#ifdef CONFIG_BLK_DEV_INITRD
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. = ALIGN(32);
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__initramfs_start = .;
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usr/built-in.o(.init.ramfs)
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__initramfs_end = .;
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#endif
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. = ALIGN(64);
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__per_cpu_start = .;
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*(.data.percpu)
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__per_cpu_end = .;
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#ifndef CONFIG_XIP_KERNEL
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__init_begin = _stext;
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*(.init.data)
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. = ALIGN(4096);
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__init_end = .;
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#endif
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}
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/DISCARD/ : { /* Exit code and data */
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*(.exit.text)
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*(.exit.data)
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*(.exitcall.exit)
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#ifndef CONFIG_MMU
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*(.fixup)
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*(__ex_table)
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#endif
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}
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.text : { /* Real text segment */
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_text = .; /* Text and read-only data */
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*(.text)
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SCHED_TEXT
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LOCK_TEXT
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#ifdef CONFIG_MMU
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*(.fixup)
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#endif
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*(.gnu.warning)
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*(.rodata)
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*(.rodata.*)
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*(.glue_7)
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*(.glue_7t)
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*(.got) /* Global offset table */
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}
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RODATA
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_etext = .; /* End of text and rodata section */
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#ifdef CONFIG_XIP_KERNEL
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__data_loc = ALIGN(4); /* location in binary */
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. = PAGE_OFFSET + TEXT_OFFSET;
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#else
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. = ALIGN(THREAD_SIZE);
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__data_loc = .;
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#endif
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.data : AT(__data_loc) {
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__data_start = .; /* address in memory */
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/*
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* first, the init task union, aligned
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* to an 8192 byte boundary.
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*/
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*(.init.task)
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#ifdef CONFIG_XIP_KERNEL
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. = ALIGN(4096);
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__init_begin = .;
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*(.init.data)
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. = ALIGN(4096);
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__init_end = .;
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#endif
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. = ALIGN(4096);
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__nosave_begin = .;
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*(.data.nosave)
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. = ALIGN(4096);
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__nosave_end = .;
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/*
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* then the cacheline aligned data
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*/
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. = ALIGN(32);
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*(.data.cacheline_aligned)
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/*
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* The exception fixup table (might need resorting at runtime)
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*/
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. = ALIGN(32);
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__start___ex_table = .;
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#ifdef CONFIG_MMU
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*(__ex_table)
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#endif
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__stop___ex_table = .;
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/*
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* and the usual data section
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*/
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*(.data)
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CONSTRUCTORS
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_edata = .;
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}
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_edata_loc = __data_loc + SIZEOF(.data);
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.bss : {
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__bss_start = .; /* BSS */
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*(.bss)
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*(COMMON)
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_end = .;
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}
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/* Stabs debugging sections. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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.comment 0 : { *(.comment) }
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}
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/*
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* These must never be empty
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* If you have to comment these two assert statements out, your
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* binutils is too old (for other reasons as well)
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*/
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ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
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ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
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