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 = .;
62 #ifndef CONFIG_XIP_KERNEL
63 __init_begin = _stext;
70 #ifndef CONFIG_XIP_KERNEL
76 * unwind exit sections must be discarded before the rest of the
77 * unwind sections get included.
80 *(.ARM.exidx.exit.text)
81 *(.ARM.extab.exit.text)
82 ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))
83 ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))
84 #ifndef CONFIG_HOTPLUG
85 *(.ARM.exidx.devexit.text)
86 *(.ARM.extab.devexit.text)
94 .text : { /* Real text segment */
95 _text = .; /* Text and read-only data */
96 __exception_text_start = .;
98 __exception_text_end = .;
111 *(.got) /* Global offset table */
112 ARM_CPU_KEEP(PROC_INFO)
117 _etext = .; /* End of text and rodata section */
119 #ifdef CONFIG_ARM_UNWIND
121 * Stack unwinding tables
125 __start_unwind_idx = .;
127 __stop_unwind_idx = .;
130 __start_unwind_tab = .;
132 __stop_unwind_tab = .;
136 #ifdef CONFIG_XIP_KERNEL
137 __data_loc = ALIGN(4); /* location in binary */
138 . = PAGE_OFFSET + TEXT_OFFSET;
140 . = ALIGN(THREAD_SIZE);
144 .data : AT(__data_loc) {
145 _data = .; /* address in memory */
149 * first, the init task union, aligned
150 * to an 8192 byte boundary.
152 INIT_TASK_DATA(THREAD_SIZE)
154 #ifdef CONFIG_XIP_KERNEL
155 . = ALIGN(PAGE_SIZE);
158 . = ALIGN(PAGE_SIZE);
163 CACHELINE_ALIGNED_DATA(32)
166 * The exception fixup table (might need resorting at runtime)
169 __start___ex_table = .;
173 __stop___ex_table = .;
176 * and the usual data section
183 _edata_loc = __data_loc + SIZEOF(.data);
185 #ifdef CONFIG_HAVE_TCM
187 * We align everything to a page boundary so we can
188 * free it after init has commenced and TCM contents have
189 * been copied to its destination.
192 . = ALIGN(PAGE_SIZE);
198 * Link these to the ITCM RAM
199 * Put VMA to the TCM address and LMA to the common RAM
200 * and we'll upload the contents from RAM to TCM and free
201 * the used RAM after that.
203 .text_itcm ITCM_OFFSET : AT(__itcm_start)
213 * Reset the dot pointer, this is needed to create the
214 * relative __dtcm_start below (to be used as extern in code).
216 . = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm);
222 /* TODO: add remainder of ITCM as well, that can be used for data! */
223 .data_dtcm DTCM_OFFSET : AT(__dtcm_start)
232 /* Reset the dot pointer or the linker gets confused */
233 . = ADDR(.dtcm_start) + SIZEOF(.data_dtcm);
235 /* End marker for freeing TCM copy in linked object */
236 .tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){
237 . = ALIGN(PAGE_SIZE);
246 .comment 0 : { *(.comment) }
248 /* Default discards */
253 * These must never be empty
254 * If you have to comment these two assert statements out, your
255 * binutils is too old (for other reasons as well)
257 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
258 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")