| /* ld script to make ARM Linux kernel |
| * taken from the i386 version by Russell King |
| * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> |
| */ |
| |
| #include <asm-generic/vmlinux.lds.h> |
| #include <asm/cache.h> |
| #include <asm/thread_info.h> |
| #include <asm/memory.h> |
| #include <asm/page.h> |
| |
| #define PROC_INFO \ |
| . = ALIGN(4); \ |
| VMLINUX_SYMBOL(__proc_info_begin) = .; \ |
| *(.proc.info.init) \ |
| VMLINUX_SYMBOL(__proc_info_end) = .; |
| |
| #define IDMAP_TEXT \ |
| ALIGN_FUNCTION(); \ |
| VMLINUX_SYMBOL(__idmap_text_start) = .; \ |
| *(.idmap.text) \ |
| VMLINUX_SYMBOL(__idmap_text_end) = .; |
| |
| #ifdef CONFIG_HOTPLUG_CPU |
| #define ARM_CPU_DISCARD(x) |
| #define ARM_CPU_KEEP(x) x |
| #else |
| #define ARM_CPU_DISCARD(x) x |
| #define ARM_CPU_KEEP(x) |
| #endif |
| |
| #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \ |
| defined(CONFIG_GENERIC_BUG) |
| #define ARM_EXIT_KEEP(x) x |
| #define ARM_EXIT_DISCARD(x) |
| #else |
| #define ARM_EXIT_KEEP(x) |
| #define ARM_EXIT_DISCARD(x) x |
| #endif |
| |
| OUTPUT_ARCH(arm) |
| ENTRY(stext) |
| |
| #ifndef __ARMEB__ |
| jiffies = jiffies_64; |
| #else |
| jiffies = jiffies_64 + 4; |
| #endif |
| |
| SECTIONS |
| { |
| /* |
| * XXX: The linker does not define how output sections are |
| * assigned to input sections when there are multiple statements |
| * matching the same input section name. There is no documented |
| * order of matching. |
| * |
| * unwind exit sections must be discarded before the rest of the |
| * unwind sections get included. |
| */ |
| /DISCARD/ : { |
| *(.ARM.exidx.exit.text) |
| *(.ARM.extab.exit.text) |
| ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) |
| ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) |
| ARM_EXIT_DISCARD(EXIT_TEXT) |
| ARM_EXIT_DISCARD(EXIT_DATA) |
| EXIT_CALL |
| #ifndef CONFIG_HOTPLUG |
| *(.ARM.exidx.devexit.text) |
| *(.ARM.extab.devexit.text) |
| #endif |
| #ifndef CONFIG_MMU |
| *(.fixup) |
| *(__ex_table) |
| #endif |
| #ifndef CONFIG_SMP_ON_UP |
| *(.alt.smp.init) |
| #endif |
| *(.discard) |
| *(.discard.*) |
| } |
| |
| #ifdef CONFIG_XIP_KERNEL |
| . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR); |
| #else |
| . = PAGE_OFFSET + TEXT_OFFSET; |
| #endif |
| .head.text : { |
| _text = .; |
| HEAD_TEXT |
| } |
| .text : { /* Real text segment */ |
| _stext = .; /* Text and read-only data */ |
| __exception_text_start = .; |
| *(.exception.text) |
| __exception_text_end = .; |
| IRQENTRY_TEXT |
| TEXT_TEXT |
| SCHED_TEXT |
| LOCK_TEXT |
| KPROBES_TEXT |
| IDMAP_TEXT |
| #ifdef CONFIG_MMU |
| *(.fixup) |
| #endif |
| *(.gnu.warning) |
| *(.glue_7) |
| *(.glue_7t) |
| . = ALIGN(4); |
| *(.got) /* Global offset table */ |
| ARM_CPU_KEEP(PROC_INFO) |
| } |
| |
| RO_DATA(PAGE_SIZE) |
| |
| . = ALIGN(4); |
| __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { |
| __start___ex_table = .; |
| #ifdef CONFIG_MMU |
| *(__ex_table) |
| #endif |
| __stop___ex_table = .; |
| } |
| |
| #ifdef CONFIG_ARM_UNWIND |
| /* |
| * Stack unwinding tables |
| */ |
| . = ALIGN(8); |
| .ARM.unwind_idx : { |
| __start_unwind_idx = .; |
| *(.ARM.exidx*) |
| __stop_unwind_idx = .; |
| } |
| .ARM.unwind_tab : { |
| __start_unwind_tab = .; |
| *(.ARM.extab*) |
| __stop_unwind_tab = .; |
| } |
| #endif |
| |
| NOTES |
| |
| _etext = .; /* End of text and rodata section */ |
| |
| #ifndef CONFIG_XIP_KERNEL |
| . = ALIGN(PAGE_SIZE); |
| __init_begin = .; |
| #endif |
| |
| INIT_TEXT_SECTION(8) |
| .exit.text : { |
| ARM_EXIT_KEEP(EXIT_TEXT) |
| } |
| .init.proc.info : { |
| ARM_CPU_DISCARD(PROC_INFO) |
| } |
| .init.arch.info : { |
| __arch_info_begin = .; |
| *(.arch.info.init) |
| __arch_info_end = .; |
| } |
| .init.tagtable : { |
| __tagtable_begin = .; |
| *(.taglist.init) |
| __tagtable_end = .; |
| } |
| #ifdef CONFIG_SMP_ON_UP |
| .init.smpalt : { |
| __smpalt_begin = .; |
| *(.alt.smp.init) |
| __smpalt_end = .; |
| } |
| #endif |
| .init.pv_table : { |
| __pv_table_begin = .; |
| *(.pv_table) |
| __pv_table_end = .; |
| } |
| .init.data : { |
| #ifndef CONFIG_XIP_KERNEL |
| INIT_DATA |
| #endif |
| INIT_SETUP(16) |
| INIT_CALLS |
| CON_INITCALL |
| SECURITY_INITCALL |
| INIT_RAM_FS |
| } |
| #ifndef CONFIG_XIP_KERNEL |
| .exit.data : { |
| ARM_EXIT_KEEP(EXIT_DATA) |
| } |
| #endif |
| |
| #ifdef CONFIG_SMP |
| PERCPU_SECTION(L1_CACHE_BYTES) |
| #endif |
| |
| #ifdef CONFIG_XIP_KERNEL |
| __data_loc = ALIGN(4); /* location in binary */ |
| . = PAGE_OFFSET + TEXT_OFFSET; |
| #else |
| __init_end = .; |
| . = ALIGN(THREAD_SIZE); |
| __data_loc = .; |
| #endif |
| |
| .data : AT(__data_loc) { |
| _data = .; /* address in memory */ |
| _sdata = .; |
| |
| /* |
| * first, the init task union, aligned |
| * to an 8192 byte boundary. |
| */ |
| INIT_TASK_DATA(THREAD_SIZE) |
| |
| #ifdef CONFIG_XIP_KERNEL |
| . = ALIGN(PAGE_SIZE); |
| __init_begin = .; |
| INIT_DATA |
| ARM_EXIT_KEEP(EXIT_DATA) |
| . = ALIGN(PAGE_SIZE); |
| __init_end = .; |
| #endif |
| |
| NOSAVE_DATA |
| CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) |
| READ_MOSTLY_DATA(L1_CACHE_BYTES) |
| |
| /* |
| * and the usual data section |
| */ |
| DATA_DATA |
| CONSTRUCTORS |
| |
| _edata = .; |
| } |
| _edata_loc = __data_loc + SIZEOF(.data); |
| |
| #ifdef CONFIG_HAVE_TCM |
| /* |
| * We align everything to a page boundary so we can |
| * free it after init has commenced and TCM contents have |
| * been copied to its destination. |
| */ |
| .tcm_start : { |
| . = ALIGN(PAGE_SIZE); |
| __tcm_start = .; |
| __itcm_start = .; |
| } |
| |
| /* |
| * Link these to the ITCM RAM |
| * Put VMA to the TCM address and LMA to the common RAM |
| * and we'll upload the contents from RAM to TCM and free |
| * the used RAM after that. |
| */ |
| .text_itcm ITCM_OFFSET : AT(__itcm_start) |
| { |
| __sitcm_text = .; |
| *(.tcm.text) |
| *(.tcm.rodata) |
| . = ALIGN(4); |
| __eitcm_text = .; |
| } |
| |
| /* |
| * Reset the dot pointer, this is needed to create the |
| * relative __dtcm_start below (to be used as extern in code). |
| */ |
| . = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm); |
| |
| .dtcm_start : { |
| __dtcm_start = .; |
| } |
| |
| /* TODO: add remainder of ITCM as well, that can be used for data! */ |
| .data_dtcm DTCM_OFFSET : AT(__dtcm_start) |
| { |
| . = ALIGN(4); |
| __sdtcm_data = .; |
| *(.tcm.data) |
| . = ALIGN(4); |
| __edtcm_data = .; |
| } |
| |
| /* Reset the dot pointer or the linker gets confused */ |
| . = ADDR(.dtcm_start) + SIZEOF(.data_dtcm); |
| |
| /* End marker for freeing TCM copy in linked object */ |
| .tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){ |
| . = ALIGN(PAGE_SIZE); |
| __tcm_end = .; |
| } |
| #endif |
| |
| BSS_SECTION(0, 0, 0) |
| _end = .; |
| |
| STABS_DEBUG |
| .comment 0 : { *(.comment) } |
| } |
| |
| /* |
| * These must never be empty |
| * If you have to comment these two assert statements out, your |
| * binutils is too old (for other reasons as well) |
| */ |
| ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support") |
| ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined") |