1 /* ld script to make ARM Linux kernel
2 * taken from the i386 version by Russell King
3 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
6 #include <asm-generic/vmlinux.lds.h>
7 #include <asm/thread_info.h>
8 #include <asm/memory.h>
12 VMLINUX_SYMBOL(__proc_info_begin) = .; \
14 VMLINUX_SYMBOL(__proc_info_end) = .;
16 #ifdef CONFIG_HOTPLUG_CPU
17 #define ARM_CPU_DISCARD(x)
18 #define ARM_CPU_KEEP(x) x
20 #define ARM_CPU_DISCARD(x) x
21 #define ARM_CPU_KEEP(x)
30 jiffies = jiffies_64 + 4;
35 #ifdef CONFIG_XIP_KERNEL
36 . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);
38 . = PAGE_OFFSET + TEXT_OFFSET;
41 .init : { /* Init code and data */
47 ARM_CPU_DISCARD(PROC_INFO)
48 __arch_info_begin = .;
54 #ifdef CONFIG_SMP_ON_UP
71 #ifndef CONFIG_XIP_KERNEL
72 __init_begin = _stext;
79 #ifndef CONFIG_XIP_KERNEL
85 * unwind exit sections must be discarded before the rest of the
86 * unwind sections get included.
89 *(.ARM.exidx.exit.text)
90 *(.ARM.extab.exit.text)
91 ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))
92 ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))
93 #ifndef CONFIG_HOTPLUG
94 *(.ARM.exidx.devexit.text)
95 *(.ARM.extab.devexit.text)
103 .text : { /* Real text segment */
104 _text = .; /* Text and read-only data */
105 __exception_text_start = .;
107 __exception_text_end = .;
122 *(.got) /* Global offset table */
123 ARM_CPU_KEEP(PROC_INFO)
128 #ifdef CONFIG_ARM_UNWIND
130 * Stack unwinding tables
134 __start_unwind_idx = .;
136 __stop_unwind_idx = .;
139 __start_unwind_tab = .;
141 __stop_unwind_tab = .;
145 _etext = .; /* End of text and rodata section */
147 #ifdef CONFIG_XIP_KERNEL
148 __data_loc = ALIGN(4); /* location in binary */
149 . = PAGE_OFFSET + TEXT_OFFSET;
151 . = ALIGN(THREAD_SIZE);
155 .data : AT(__data_loc) {
156 _data = .; /* address in memory */
160 * first, the init task union, aligned
161 * to an 8192 byte boundary.
163 INIT_TASK_DATA(THREAD_SIZE)
165 #ifdef CONFIG_XIP_KERNEL
166 . = ALIGN(PAGE_SIZE);
169 . = ALIGN(PAGE_SIZE);
174 CACHELINE_ALIGNED_DATA(32)
178 * The exception fixup table (might need resorting at runtime)
181 __start___ex_table = .;
185 __stop___ex_table = .;
188 * and the usual data section
195 _edata_loc = __data_loc + SIZEOF(.data);
197 #ifdef CONFIG_HAVE_TCM
199 * We align everything to a page boundary so we can
200 * free it after init has commenced and TCM contents have
201 * been copied to its destination.
204 . = ALIGN(PAGE_SIZE);
210 * Link these to the ITCM RAM
211 * Put VMA to the TCM address and LMA to the common RAM
212 * and we'll upload the contents from RAM to TCM and free
213 * the used RAM after that.
215 .text_itcm ITCM_OFFSET : AT(__itcm_start)
225 * Reset the dot pointer, this is needed to create the
226 * relative __dtcm_start below (to be used as extern in code).
228 . = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm);
234 /* TODO: add remainder of ITCM as well, that can be used for data! */
235 .data_dtcm DTCM_OFFSET : AT(__dtcm_start)
244 /* Reset the dot pointer or the linker gets confused */
245 . = ADDR(.dtcm_start) + SIZEOF(.data_dtcm);
247 /* End marker for freeing TCM copy in linked object */
248 .tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){
249 . = ALIGN(PAGE_SIZE);
258 .comment 0 : { *(.comment) }
260 /* Default discards */
263 #ifndef CONFIG_SMP_ON_UP
271 * These must never be empty
272 * If you have to comment these two assert statements out, your
273 * binutils is too old (for other reasons as well)
275 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
276 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")